Network Working Group E. Bell

Network Working Group E. Bell
Request for Comments: 2674 3Com Corp.
Category: Standards Track A. Smith
Extreme Networks
P. Langille
Newbridge Networks
A. Rijhsinghani
Cabletron Systems
K. McCloghrie
cisco Systems
August 1999

Definitions of Managed Objects for Bridges with Traffic
Classes, Multicast Filtering and Virtual LAN Extensions

Status of this Memo

This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1999). All Rights Reserved.

Abstract

This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in TCP/IP based internets.
In particular, it defines two MIB modules for managing the new
capabilities of MAC bridges defined by the IEEE 802.1D-1998 MAC
Bridges and the IEEE 802.1Q-1998 Virtual LAN (VLAN) standards for
bridging between Local Area Network (LAN) segments. One MIB module
defines objects for managing the 'Traffic Classes' and 'Enhanced
Multicast Filtering' components of IEEE 802.1D-1998. The other MIB
module defines objects for managing IEEE 802.1Q VLANs.

Provisions are made for support of transparent bridging. Provisions
are also made so that these objects apply to bridges connected by
subnetworks other than LAN segments. This memo also includes several
MIB modules in a manner that is compliant to the SMIv2 [V2SMI].

This memo supplements RFC 1493 [BRIDGEMIB] and (to a lesser extent)
RFC 1525 [SBRIDGEMIB].

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RFC 2674 Bridge MIB Extensions August 1999

Table of Contents

1 The SNMP Management Framework ................................... 3
2 Overview ........................................................ 4
2.1 Scope ......................................................... 4
3 Structure of MIBs ............................................... 5
3.1 Structure of Extended Bridge MIB module ....................... 5
3.1.1 Relationship to IEEE 802.1D-1998 Manageable Objects ......... 6
3.1.2 Relationship to IEEE 802.1Q Manageable Objects .............. 8
3.1.3 The dot1dExtBase Group ...................................... 8
3.1.4 The dot1dPriority Group ..................................... 9
3.1.5 The dot1dGarp Group ......................................... 9
3.1.6 The dot1dGmrp Group ......................................... 9
3.1.7 The dot1dTpHCPortTable ...................................... 9
3.1.8 The dot1dTpPortOverflowTable ................................ 9
3.2 Structure of Virtual Bridge MIB module ........................ 9
3.2.1 Relationship to IEEE 802.1Q Manageable Objects .............. 9
3.2.2 The dot1qBase Group .........................................13
3.2.3 The dot1qTp Group ...........................................13
3.2.4 The dot1qStatic Group .......................................13
3.2.5 The dot1qVlan Group .........................................13
3.3 Textual Conventions ...........................................13
3.4 Relationship to Other MIBs ....................................14
3.4.1 Relationship to the 'system' group ..........................14
3.4.2 Relation to Interfaces MIB ..................................14
3.4.2.1 Layering Model ............................................15
3.4.2.2 ifStackTable ..............................................16
3.4.2.3 ifRcvAddressTable .........................................16
3.4.3 Relation to Original Bridge MIB .............................16
3.4.3.1 The dot1dBase Group .......................................16
3.4.3.2 The dot1dStp Group ........................................17
3.4.3.3 The dot1dTp Group .........................................17
3.4.3.4 The dot1dStatic Group .....................................17
3.4.3.5 Additions to the Original Bridge MIB ......................18
4 Definitions for Extended Bridge MIB .............................18
5 Definitions for Virtual Bridge MIB ..............................39
6 Acknowledgments .................................................80
7 Security Considerations .........................................80
8 References ......................................................81
9 Authors' Addresses ..............................................84
10 Intellectual Property ..........................................85
11 Full Copyright Statement .......................................86

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1. The SNMP Management Framework

The SNMP Management Framework presently consists of five major
components:

o An overall architecture, described in an Architecture for
Describing SNMP Management Frameworks [ARCH].

o Mechanisms for describing and naming objects and events for the
purpose of management. The first version of this Structure of
Management Information (SMI) is called SMIv1 and described in STD
16, RFC 1155 [V1SMI], STD 16, RFC 1212 [V1CONCISE] and RFC 1215
[V1TRAPS]. The second version, called SMIv2, is described in STD
58, RFC 2578 [V2SMI], STD 58, RFC 2579 [V2TC] and STD 58, RFC
2580 [V2CONFORM].

o Message protocols for transferring management information. The
first version of the SNMP message protocol is called SNMPv1 and
described in STD 15, RFC 1157 [V1PROTO]. A second version of the
SNMP message protocol, which is not an Internet standards track
protocol, is called SNMPv2c and described in RFC 1901
[V2COMMUNITY] and RFC 1906 [V2TRANS]. The third version of the
message protocol is called SNMPv3 and described in RFC 1906
[V2TRANS], Message Processing and Dispatching [V3MPC] and User-
based Security Model [V3USM].

o Protocol operations for accessing management information. The
first set of protocol operations and associated PDU formats is
described in STD 15, RFC 1157 [V1PROTO]. A second set of
protocol operations and associated PDU formats is described in
RFC 1905 [V2PROTO].

o A set of fundamental applications described in SNMPv3
Applications [V3APPS] and the view-based access control mechanism
described in View-based Access Control Model [V3VACM].

Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. Objects in the MIB are
defined using the mechanisms defined in the SMI.

This memo specifies a MIB module that is compliant to the SMIv2. A
MIB conforming to the SMIv1 can be produced through the appropriate
translations. The resulting translated MIB must be semantically
equivalent, except where objects or events are omitted because no
translation is possible (use of Counter64). Some machine readable
information in SMIv2 will be converted into textual descriptions in

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SMIv1 during the translation process. However, this loss of machine
readable information is not considered to change the semantics of the
MIB.

2. Overview

A common device present in many networks is the Bridge. This device
is used to connect Local Area Network segments below the network
layer. These devices are often known as 'layer 2 switches'.

There are two major modes defined for this bridging: Source-Route and
transparent. Source-Route bridging is described by IEEE 802.5
[802.5]. and is not discussed further in this document.

The transparent method of bridging is defined by IEEE 802.1D-1998
[802.1D] which is an update to the original IEEE 802.1D specification
[802.1D-ORIG]. Managed objects for that original specification of
transparent bridging were defined in RFC 1493 [BRIDGEMIB].

The original IEEE 802.1D is augmented by IEEE 802.1Q-1998 [802.1Q] to
provide support for 'virtual bridged LANs' where a single bridged
physical LAN network may be used to support multiple logical bridged
LANs, each of which offers a service approximately the same as that
defined by IEEE 802.1D. Such virtual LANs (VLANs) are an integral
feature of switched LAN networks. A VLAN can be viewed as a group of
end-stations on multiple LAN segments and can communicate as if they
were on a single LAN. IEEE 802.1Q defines port-based Virtual LANs
where membership is determined by the bridge port on which data
frames are received. This memo defines the objects needed for the
management of port-based VLANs in bridge entities.

This memo defines those objects needed for the management of a
bridging entity operating in the transparent mode, as well as some
objects applicable to all types of bridges. Managed objects for
Source-Route bridging are defined in RFC 1525 [SRBRIDGEMIB].

2.1. Scope

This MIB includes a comprehensive set of managed objects which
attempts to match the set defined in IEEE 802.1D and IEEE 802.1Q.
However, to be consistent with the spirit of the SNMP Framework, a
subjective judgement was made to omit the objects from those
standards most 'costly' to implement in an agent and least
'essential' for fault and configuration management. The omissions
are described in section 3 below.

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Historical note:

The original bridge MIB [BRIDGEMIB] used the following principles for
determining inclusion of an object in the BRIDGE-MIB module:

(1) Start with a small set of essential objects and add only as
further objects are needed.

(2) Require objects be essential for either fault or configuration
management.

(3) Consider evidence of current use and/or utility.

(4) Limit the total of objects.

(5) Exclude objects which are simply derivable from others in
this or other MIBs.

(6) Avoid causing critical sections to be heavily instrumented.
The guideline that was followed is one counter per critical
section per layer.

3. Structure of MIBs

This document defines additional objects, on top of those existing in
the original BRIDGE-MIB module defined in [BRIDGEMIB]: that MIB
module is to be maintained unchanged for backwards compatibility.
Section 3.4.3 of the present document contains some recommendations
regarding usage of objects in the original bridge MIB by devices
implementing the enhancements defined here.

Two MIB modules are defined here:

(1) Managed objects for an extended bridge MIB module P-BRIDGE-MIB
for the traffic class and multicast filtering enhancements
defined by IEEE 802.1D-1998 [802.1D].

(2) Managed objects for a virtual bridge MIB module Q-BRIDGE-MIB
for the Virtual LAN bridging enhancements defined by IEEE
802.1Q-1998 [802.1Q].

3.1. Structure of Extended Bridge MIB module

Objects in this MIB are arranged into groups. Each group is
organized as a set of related objects. The overall structure and
assignment of objects to their groups is shown below.

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3.1.1. Relationship to IEEE 802.1D-1998 Manageable Objects

This section contains a cross-reference to the objects defined in
IEEE 802.1D-1998 [802.1D]. It also details those objects that are
not considered necessary in this MIB module.

Some objects defined by IEEE 802.1D-1998 have been included in the
virtual bridge MIB module rather than this one: entries in
dot1qTpGroupTable, dot1qForwardAllTable and
dot1qForwardUnregisteredTable are required for virtual bridged LANs
with additional indexing (e.g. per-VLAN, per-FDB) and so are not
defined here. Instead, devices which do not implement virtual
bridged LANs but do implement the Extended Forwarding Services
defined by IEEE 802.1D (i.e. dynamic learning of multicast group
addresses and group service requirements in the filtering database)
should implement these tables with a fixed value for dot1qFdbId (the
value 1 is recommended) or dot1qVlanIndex (the value 1 is
recommended). Devices which support Extended Filtering Services
should support dot1qTpGroupTable, dot1qForwardAllTable and
dot1qForwardUnregisteredTable.

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RFC 2674 Bridge MIB Extensions August 1999

Extended Bridge MIB Name IEEE 802.1D-1998 Name

dot1dExtBase Bridge
dot1dDeviceCapabilities
dot1dExtendedFilteringServices
dot1dTrafficClasses
dot1dTrafficClassesEnabled
dot1dGmrpStatus .ApplicantAdministrativeControl
dot1dPriority
dot1dPortPriorityTable
dot1dPortDefaultUserPriority .UserPriority
dot1dPortNumTrafficClasses
dot1dUserPriorityRegenTable .UserPriorityRegenerationTable
dot1dUserPriority
dot1dRegenUserPriority
dot1dTrafficClassTable .TrafficClassTable
dot1dTrafficClassPriority
dot1dTrafficClass
dot1dPortOutboundAccessPriorityTable
.OutboundAccessPriorityTable
dot1dPortOutboundAccessPriority
dot1dGarp
dot1dPortGarpTable
dot1dPortGarpJoinTime .JoinTime
dot1dPortGarpLeaveTime .LeaveTime
dot1dPortGarpLeaveAllTime .LeaveAllTime
dot1dGmrp
dot1dPortGmrpTable
dot1dPortGmrpStatus .ApplicantAdministrativeControl
dot1dPortGmrpFailedRegistrations .FailedRegistrations
dot1dPortGmrpLastPduOrigin .OriginatorOfLastPDU
dot1dTp
dot1dTpHCPortTable
dot1dTpHCPortInFrames .BridgePort.FramesReceived
dot1dTpHCPortOutFrames .ForwardOutBound
dot1dTpHCPortInDiscards .DiscardInbound
dot1dTpPortOverflowTable
dot1dTpPortInOverflowFrames .BridgePort.FramesReceived
dot1dTpPortOutOverflowFrames .ForwardOutBound
dot1dTpPortInOverflowDiscards .DiscardInbound

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The following IEEE 802.1D-1998 management objects have not been
included in the Bridge MIB for the indicated reasons.

IEEE 802.1D-1998 Object Disposition

Bridge.StateValue not considered useful
Bridge.ApplicantAdministrativeControl
not provided per-attribute
(e.g. per-VLAN, per-Group).
Only per-{device,port,application}
control is provided in this MIB.

3.1.2. Relationship to IEEE 802.1Q Manageable Objects

This section contains section number cross-references to manageable
objects defined in IEEE 802.1Q-1998 [802.1Q]. These objects have
been included in this MIB as they provide a natural fit with the IEEE
802.1D objects with which they are co-located.

Extended Bridge MIB Name IEEE 802.1Q-1998 Section and Name

dot1dExtBase Bridge
dot1dDeviceCapabilities
dot1qStaticEntryIndividualPort 5.2 implementation options
dot1qIVLCapable
dot1qSVLCapable
dot1qHybridCapable
dot1qConfigurablePvidTagging 12.10.1.1 read bridge vlan
config
dot1dLocalVlanCapable
dot1dPortCapabilitiesTable
dot1dPortCapabilities
dot1qDot1qTagging 5.2 implementation options
dot1qConfigurableAcceptableFrameTypes
5.2 implementation options
dot1qIngressFiltering 5.2 implementation options

3.1.3. The dot1dExtBase Group

This group contains the objects which are applicable to all bridges
implementing the traffic class and multicast filtering features of
IEEE 802.1D-1998 [802.1D]. It includes per-device configuration of
GARP and GMRP protocols. This group will be implemented by all
devices which implement the extensions defined in 802.1D-1998.

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3.1.4. The dot1dPriority Group

This group contains the objects for configuring and reporting status
of priority-based queuing mechanisms in a bridge. This includes per-
port user_priority treatment, mapping of user_priority in frames into
internal traffic classes and outbound user_priority and
access_priority.

3.1.5. The dot1dGarp Group

This group contains the objects for configuring and reporting on
operation of the Generic Attribute Registration Protocol (GARP).

3.1.6. The dot1dGmrp Group

This group contains the objects for configuring and reporting on
operation of the GARP Multicast Registration Protocol (GMRP).

3.1.7. The dot1dTpHCPortTable

This table extends the dot1dTp group from the original bridge MIB
[BRIDGEMIB] and contains the objects for reporting port bridging
statistics for high capacity network interfaces.

3.1.8. The dot1dTpPortOverflowTable

This table extends the dot1dTp group from the original bridge MIB
[BRIDGEMIB] and contains the objects for reporting the upper bits of
port bridging statistics for high capacity network interfaces for
when 32-bit counters are inadequate.

3.2. Structure of Virtual Bridge MIB module

Objects in this MIB are arranged into groups. Each group is
organized as a set of related objects. The overall structure and
assignment of objects to their groups is shown below. Some
manageable objects defined in the original bridge MIB [BRIDGEMIB]
need to be indexed differently when they are used in a VLAN bridging
environment: these objects are, therefore, effectively duplicated by
new objects with different indexing which are defined in the Virtual
Bridge MIB.

3.2.1. Relationship to IEEE 802.1Q Manageable Objects

This section contains section-number cross-references to manageable
objects defined in clause 12 of IEEE 802.1Q-1998 [802.1Q]. It also
details those objects that are not considered necessary in this MIB
module.

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Note: unlike IEEE 802.1D-1998, IEEE 802.1Q-1998 [802.1Q] did not
define exact syntax for a set of managed objects: the following
cross-references indicate the section numbering of the descriptions
of management operations from clause 12 in the latter document.

Virtual Bridge MIB object IEEE 802.1Q-1998 Reference

dot1qBase
dot1qVlanVersionNumber 12.10.1.1 read bridge vlan config
dot1qMaxVlanId 12.10.1.1 read bridge vlan config
dot1qMaxSupportedVlans 12.10.1.1 read bridge vlan config
dot1qNumVlans
dot1qGvrpStatus 12.9.2.1/2 read/set garp
applicant controls
dot1qTp
dot1qFdbTable
dot1qFdbId
dot1qFdbDynamicCount 12.7.1.1.3 read filtering d/base
dot1qTpFdbTable
dot1qTpFdbAddress
dot1qTpFdbPort
dot1qTpFdbStatus
dot1qTpGroupTable 12.7.7.1 read filtering entry
dot1qTpGroupAddress
dot1qTpGroupEgressPorts
dot1qTpGroupLearnt
dot1qForwardAllTable 12.7.7.1 read filtering entry
dot1qForwardAllPorts
dot1qForwardAllStaticPorts
dot1qForwardAllForbiddenPorts
dot1qForwardUnregisteredTable 12.7.7.1 read filtering entry
dot1qForwardUnregisteredPorts
dot1qForwardUnregisteredStaticPorts
dot1qForwardUnregisteredForbiddenPorts
dot1qStatic
dot1qStaticUnicastTable 12.7.7.1 create/delete/read
filtering entry
12.7.6.1 read permanent database
dot1qStaticUnicastAddress
dot1qStaticUnicastReceivePort
dot1qStaticUnicastAllowedToGoTo
dot1qStaticUnicastStatus
dot1qStaticMulticastTable 12.7.7.1 create/delete/read
filtering entry
12.7.6.1 read permanent database
dot1qStaticMulticastAddress
dot1qStaticMulticastReceivePort
dot1qStaticMulticastStaticEgressPorts

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dot1qStaticMulticastForbiddenEgressPorts
dot1qStaticMulticastStatus
dot1qVlan
dot1qVlanNumDeletes
dot1qVlanCurrentTable 12.10.2.1 read vlan configuration
12.10.3.5 read VID to FID
allocations
12.10.3.6 read FID allocated to
VID
12.10.3.7 read VIDs allocated to
FID
dot1qVlanTimeMark
dot1qVlanIndex
dot1qVlanFdbId
dot1qVlanCurrentEgressPorts
dot1qVlanCurrentUntaggedPorts
dot1qVlanStatus
dot1qVlanCreationTime
dot1qVlanStaticTable 12.7.7.1/2/3 create/delete/read
filtering entry
12.7.6.1 read permanent database
12.10.2.2 create vlan config
12.10.2.3 delete vlan config
dot1qVlanStaticName 12.4.1.3 set bridge name
dot1qVlanStaticEgressPorts
dot1qVlanForbiddenEgressPorts
dot1qVlanStaticUntaggedPorts
dot1qVlanStaticRowStatus
dot1qNextFreeLocalVlanIndex
dot1qPortVlanTable 12.10.1.1 read bridge vlan
configuration
dot1qPvid 12.10.1.2 configure PVID values
dot1qPortAcceptableFrameTypes 12.10.1.3 configure acceptable
frame types parameter
dot1qPortIngressFiltering 12.10.1.4 configure ingress
filtering parameters
dot1qPortGvrpStatus 12.9.2.2 read/set garp applicant
controls
dot1qPortGvrpFailedRegistrations
dot1qPortGvrpLastPduOrigin
dot1qPortVlanStatisticsTable 12.6.1.1 read forwarding port
counters
dot1qTpVlanPortInFrames
dot1qTpVlanPortOutFrames
dot1qTpVlanPortInDiscards
dot1qTpVlanPortInOverflowFrames
dot1qTpVlanPortOutOverflowFrames
dot1qTpVlanPortInOverflowDiscards

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dot1qPortVlanHCStatisticsTable 12.6.1.1 read forwarding port
counters
dot1qTpVlanPortHCInFrames
dot1qTpVlanPortHCOutFrames
dot1qTpVlanPortHCInDiscards
dot1qLearningConstraintsTable 12.10.3.1/3/4 read/set/delete
vlan learning constraints
12.10.3.2 read vlan learning
constraints for VID
dot1qConstraintVlan
dot1qConstraintSet
dot1qConstraintType
dot1qConstraintStatus
dot1qConstraintSetDefault
dot1qConstraintTypeDefault

The following IEEE 802.1Q management objects have not been included
in the Bridge MIB for the indicated reasons.

IEEE 802.1Q-1998 Operation Disposition

reset bridge (12.4.1.4) not considered useful

reset vlan bridge (12.10.1.5) not considered useful

read forwarding port counters (12.6.1.1)
discard on error details not considered useful

read permanent database (12.7.6.1)
permanent database size not considered useful
number of static filtering count rows in
entries dot1qStaticUnicastTable +
dot1qStaticMulticastTable
number of static VLAN count rows in
registration entries dot1qVlanStaticTable

read filtering entry range use GetNext operation.
(12.7.7.4)

read filtering database (12.7.1.1)
filtering database size not considered useful
number of dynamic group address count rows applicable to each
entries (12.7.1.3) FDB in dot1dTpGroupTable

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read garp state (12.9.3.1) not considered useful

notify vlan registration failure not considered useful
(12.10.1.6)

notify learning constraint violation
(12.10.3.10) not considered useful

3.2.2. The dot1qBase Group

This mandatory group contains the objects which are applicable to all
bridges implementing IEEE 802.1Q virtual LANs.

3.2.3. The dot1qTp Group

This group contains objects that control the operation and report the
status of transparent bridging. This includes management of the
dynamic Filtering Databases for both unicast and multicast
forwarding. This group will be implemented by all bridges that
perform destination-address filtering.

3.2.4. The dot1qStatic Group

This group contains objects that control static configuration
information for transparent bridging. This includes management of
the static entries in the Filtering Databases for both unicast and
multicast forwarding.

3.2.5. The dot1qVlan Group

This group contains objects that control configuration and report
status of the Virtual LANs known to a bridge. This includes
management of the statically configured VLANs as well as reporting
VLANs discovered by other means e.g. GVRP. It also controls
configuration and reports status of per-port objects relating to
VLANs and reports traffic statistics. It also provides for
management of the VLAN Learning Constraints.

3.3. Textual Conventions

The datatypes MacAddress, BridgeId, Timeout, EnabledStatus, PortList,
VlanIndex and VlanId are used as textual conventions in this
document. These textual conventions have NO effect on either the
syntax nor the semantics of any managed object. Objects defined
using these conventions are always encoded by means of the rules that
define their primitive type. Hence, no changes to the SMI or the
SNMP are necessary to accommodate these textual conventions which are
adopted merely for the convenience of readers.

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3.4. Relationship to Other MIBs

As described above, some IEEE 802.1D management objects have not been
included in this MIB because they overlap with objects in other MIBs
applicable to a bridge implementing this MIB. In particular, it is
assumed that a bridge implementing this MIB will also implement (at
least) the 'system' group defined in MIB-II [MIB2], the 'interfaces'
group defined in [INTERFACEMIB] and the original bridge MIB
[BRIDGEMIB].

3.4.1. Relationship to the 'system' group

In MIB-II, the 'system' group is defined as being mandatory for all
systems such that each managed entity contains one instance of each
object in the 'system' group. Thus, those objects apply to the
entity as a whole irrespective of whether the entity's sole
functionality is bridging, or whether bridging is only a subset of
the entity's functionality.

3.4.2. Relation to Interfaces MIB

The Interfaces Group MIB [INTERFACEMIB], requires that any MIB which
is an adjunct of the Interfaces Group MIB, clarify specific areas
within the Interfaces Group MIB. These areas were intentionally left
vague in the Interfaces Group MIB to avoid over-constraining the MIB,
thereby precluding management of certain media-types.

The Interfaces Group MIB enumerates several areas which a media-
specific MIB must clarify. Each of these areas is addressed in a
following subsection. The implementor is referred to the Interfaces
Group MIB in order to understand the general intent of these areas.

In the Interfaces Group MIB, the 'interfaces' group is defined as
being mandatory for all systems and contains information on an
entity's interfaces, where each interface is thought of as being
attached to a `subnetwork'. (Note that this term is not to be
confused with `subnet' which refers to an addressing partitioning
scheme used in the Internet suite of protocols.) The term 'segment'
is used in this memo to refer to such a subnetwork, whether it be an
Ethernet segment, a 'ring', a WAN link, or even an X.25 virtual
circuit.

Implicit in this Extended Bridge MIB is the notion of ports on a
bridge. Each of these ports is associated with one interface of the
'interfaces' group (one row in ifTable) and, in most situations, each
port is associated with a different interface. However, there are
situations in which multiple ports are associated with the same

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interface. An example of such a situation would be several ports
each corresponding one-to-one with several X.25 virtual circuits but
all on the same interface.

Each port is uniquely identified by a port number. A port number has
no mandatory relationship to an interface number, but in the simple
case a port number will have the same value as the corresponding
interface's interface number. Port numbers are in the range
(1..dot1dBaseNumPorts).

Some entities perform other functionality as well as bridging through
the sending and receiving of data on their interfaces. In such
situations, only a subset of the data sent/received on an interface
is within the domain of the entity's bridging functionality. This
subset is considered to be delineated according to a set of
protocols, with some protocols being bridged, and other protocols not
being bridged. For example, in an entity which exclusively performed
bridging, all protocols would be considered as being bridged, whereas
in an entity which performed IP routing on IP datagrams and only
bridged other protocols, only the non-IP data would be considered as
being bridged. Thus, this Extended Bridge MIB (and in particular,
its counters) is applicable only to that subset of the data on an
entity's interfaces which is sent/received for a protocol being
bridged. All such data is sent/received via the ports of the bridge.

3.4.2.1. Layering Model

This memo assumes the interpretation of the Interfaces Group to be in
accordance with the Interfaces Group MIB [INTERFACEMIB] which states
that the interfaces table (ifTable) contains information on the
managed resource's interfaces and that each sub-layer below the
internetwork layer of a network interface is considered an interface.

This document recommends that, within an entity, VLANs which are
instantiated as an entry in dot1qVlanCurrentTable by either
management configuration through dot1qVlanStaticTable or by dynamic
means (e.g. through GVRP), are NOT also represented by an entry in
ifTable.

Where an entity contains higher-layer protocol entities e.g. IP-layer
interfaces that transmit and receive traffic to/from a VLAN, these
should be represented in the ifTable as interfaces of type
propVirtual(53). Protocol-specific types such as l3ipxvlan(137)
should not be used here since there is no implication that the bridge
will perform any protocol filtering before delivering up to these
virtual interfaces.

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3.4.2.2. ifStackTable

In addition, the Interfaces Group MIB [INTERFACEMIB] defines a table
'ifStackTable' for describing the relationship between logical
interfaces within an entity. It is anticipated that implementors
will use this table to describe the binding of e.g. IP interfaces to
physical ports, although the presence of VLANs makes the
representation less than perfect for showing connectivity: the
ifStackTable cannot represent the full capability of the IEEE 802.1Q
VLAN bridging standard since that makes a distinction between VLAN
bindings on 'ingress' to and 'egress' from a port: these
relationships may or may not be symmetrical whereas Interface MIB
Evolution assumes a symmetrical binding for transmit and receive.
This makes it necessary to define other manageable objects for
configuring which ports are members of which VLANs.

3.4.2.3. ifRcvAddressTable

This table contains all MAC addresses, unicast, multicast, and
broadcast, for which an interface will receive packets and forward
them up to a higher layer entity for local consumption. Note that
this does not include addresses for data-link layer control protocols
such as Spanning-Tree, GMRP or GVRP. The format of the address,
contained in ifRcvAddressAddress, is the same as for ifPhysAddress.

This table does not include unicast or multicast addresses which are
accepted for possible forwarding out some other port. This table is
explicitly not intended to provide a bridge address filtering
mechanism.

3.4.3. Relation to Original Bridge MIB

This section defines how objects in the original bridge MIB module
[BRIDGEMIB] should be represented for devices which implement the
extensions: some of the old objects are less useful in such devices
but must still be implemented for reasons of backwards compatibility.
Note that formal conformance statements for that MIB module do not
exist since it is defined in SMIv1.

3.4.3.1. The dot1dBase Group

This mandatory group contains the objects which are applicable to all
types of bridges. Interpretation of this group is unchanged.

Bell, et al. Standards Track [Page 16]

RFC 2674 Bridge MIB Extensions August 1999

3.4.3.2. The dot1dStp Group

This group contains the objects that denote the bridge's state with
respect to the Spanning Tree Protocol. Interpretation of this group
is unchanged.

3.4.3.3. The dot1dTp Group

This group contains objects that describe the entity's state with
respect to transparent bridging.

In a device operating with a single Filtering Database,
interpretation of this group is unchanged.

In a device supporting multiple Filtering Databases, this group is
interpreted as follows:

dot1dTpLearnedEntryDiscards
The number of times that *any* of the FDBs became full.

dot1dTpAgingTime
This applies to all Filtering Databases.

dot1dTpFdbTable
Report MAC addresses learned on each port, regardless of which
Filtering Database they have been learnt in. If an address has
been learnt in multiple databases on a single port, report it
only once. If an address has been learnt in multiple
databases on more than one port, report the entry on any one of
the valid ports.

dot1dTpPortTable
This table is port-based and is not affected by multiple
Filtering Databases or multiple VLANs. The counters should
include frames received or transmitted for all VLANs. Note that
equivalent 64-bit port statistics counters, as well as other
objects to represent the upper 32 bits of these counters, are
defined in this document for high capacity network interfaces.
These have confromance statements to indicate for which speeds of
interface they are required.

3.4.3.4. The dot1dStatic Group

This optional group contains objects that describe the configuration
of destination-address filtering.

In a device operating with a single Filtering Database,
interpretation of this group is unchanged.

Bell, et al. Standards Track [Page 17]

RFC 2674 Bridge MIB Extensions August 1999

In a device supporting multiple Filtering Databases, this group is
interpreted as follows:

dot1dStaticTable
Entries read from this table include all static entries from all
of the Filtering Databases. Entries for the same MAC address
and receive port in more than one Filtering Database must appear
only once since these are the indices of this table. This table
should be implemented as read-only in devices that support
multiple Forwarding Databases - instead, write access should be
provided through dot1qStaticUnicastTable and
dot1qStaticMulticastTable, as defined in this document.

3.4.3.5. Additions to the Original Bridge MIB

In addition to the objects in the original bridge MIB [BRIDGEMIB],
this document contains:

(1) support for multiple traffic classes and dynamic multicast
filtering as per IEEE 802.1D-1998 [802.1D].

(2) support for bridged Virtual LANs as per IEEE 802.1Q-1998
[802.1Q].

(3) support for 64-bit versions of original bridge MIB [BRIDGEMIB]
port counters.

4. Definitions for Extended Bridge MIB

P-BRIDGE-MIB DEFINITIONS ::= BEGIN

-- -------------------------------------------------------------
-- MIB for IEEE 802.1p devices
-- -------------------------------------------------------------

IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, Counter32, Counter64
FROM SNMPv2-SMI
TruthValue, TimeInterval, MacAddress, TEXTUAL-CONVENTION
FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF
dot1dTp, dot1dTpPort, dot1dBridge,
dot1dBasePortEntry, dot1dBasePort
FROM BRIDGE-MIB;

Bell, et al. Standards Track [Page 18]

RFC 2674 Bridge MIB Extensions August 1999

pBridgeMIB MODULE-IDENTITY
LAST-UPDATED "9908250000Z"
ORGANIZATION "IETF Bridge MIB Working Group"
CONTACT-INFO
" Les Bell
Postal: 3Com Europe Ltd.
3Com Centre, Boundary Way
Hemel Hempstead, Herts. HP2 7YU
UK
Phone: +44 1442 438025
Email: [email protected]

Andrew Smith
Postal: Extreme Networks
3585 Monroe St.
Santa Clara CA 95051
USA
Phone: +1 408 579 2821
Email: [email protected]

Paul Langille
Postal: Newbridge Networks
5 Corporate Drive
Andover, MA 01810
USA
Phone: +1 978 691 4665
Email: [email protected]

Anil Rijhsinghani
Postal: Cabletron Systems
50 Minuteman Road
Andover, MA 01810
USA
Phone: +1 978 684 1295
Email: [email protected]

Keith McCloghrie
Postal: cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
Phone: +1 408 526 5260
Email: [email protected]"

DESCRIPTION
"The Bridge MIB Extension module for managing Priority
and Multicast Filtering, defined by IEEE 802.1D-1998."

Bell, et al. Standards Track [Page 19]

RFC 2674 Bridge MIB Extensions August 1999

-- revision history

REVISION "9908250000Z"
DESCRIPTION
"Initial version, published as RFC 2674."

::= { dot1dBridge 6 }

pBridgeMIBObjects OBJECT IDENTIFIER ::= { pBridgeMIB 1 }

-- -------------------------------------------------------------
-- Textual Conventions
-- -------------------------------------------------------------

EnabledStatus ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A simple status value for the object."
SYNTAX INTEGER { enabled(1), disabled(2) }

-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- groups in the P-BRIDGE MIB
-- -------------------------------------------------------------

dot1dExtBase OBJECT IDENTIFIER ::= { pBridgeMIBObjects 1 }
dot1dPriority OBJECT IDENTIFIER ::= { pBridgeMIBObjects 2 }
dot1dGarp OBJECT IDENTIFIER ::= { pBridgeMIBObjects 3 }
dot1dGmrp OBJECT IDENTIFIER ::= { pBridgeMIBObjects 4 }

-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- the dot1dExtBase group
-- -------------------------------------------------------------

dot1dDeviceCapabilities OBJECT-TYPE
SYNTAX BITS {
dot1dExtendedFilteringServices(0),
-- can perform filtering of
-- individual multicast addresses
-- controlled by GMRP.
dot1dTrafficClasses(1),
-- can map user priority to
-- multiple traffic classes.

Bell, et al. Standards Track [Page 20]

RFC 2674 Bridge MIB Extensions August 1999

dot1qStaticEntryIndividualPort(2),
-- dot1qStaticUnicastReceivePort &
-- dot1qStaticMulticastReceivePort
-- can represent non-zero entries.
dot1qIVLCapable(3), -- Independent VLAN Learning.
dot1qSVLCapable(4), -- Shared VLAN Learning.
dot1qHybridCapable(5),
-- both IVL & SVL simultaneously.
dot1qConfigurablePvidTagging(6),
-- whether the implementation
-- supports the ability to
-- override the default PVID
-- setting and its egress status
-- (VLAN-Tagged or Untagged) on
-- each port.
dot1dLocalVlanCapable(7)
-- can support multiple local
-- bridges, outside of the scope
-- of 802.1Q defined VLANs.
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates the optional parts of IEEE 802.1D and 802.1Q
that are implemented by this device and are manageable
through this MIB. Capabilities that are allowed on a
per-port basis are indicated in dot1dPortCapabilities."
REFERENCE
"ISO/IEC 15802-3 Section 5.2,
IEEE 802.1Q/D11 Section 5.2, 12.10.1.1.3/b/2"
::= { dot1dExtBase 1 }

dot1dTrafficClassesEnabled OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The value true(1) indicates that Traffic Classes are
enabled on this bridge. When false(2), the bridge
operates with a single priority level for all traffic."
DEFVAL { true }
::= { dot1dExtBase 2 }

dot1dGmrpStatus OBJECT-TYPE
SYNTAX EnabledStatus
MAX-ACCESS read-write
STATUS current
DESCRIPTION

Bell, et al. Standards Track [Page 21]

RFC 2674 Bridge MIB Extensions August 1999

"The administrative status requested by management for
GMRP. The value enabled(1) indicates that GMRP should
be enabled on this device, in all VLANs, on all ports
for which it has not been specifically disabled. When
disabled(2), GMRP is disabled, in all VLANs, on all
ports and all GMRP packets will be forwarded
transparently. This object affects both Applicant and
Registrar state machines. A transition from disabled(2)
to enabled(1) will cause a reset of all GMRP state
machines on all ports."
DEFVAL { enabled }
::= { dot1dExtBase 3 }

-- -------------------------------------------------------------
-- Port Capabilities Table
-- -------------------------------------------------------------

dot1dPortCapabilitiesTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dPortCapabilitiesEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that contains capabilities information about
every port that is associated with this bridge."
::= { dot1dExtBase 4 }

dot1dPortCapabilitiesEntry OBJECT-TYPE
SYNTAX Dot1dPortCapabilitiesEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A set of capabilities information about this port
indexed by dot1dBasePort."
AUGMENTS { dot1dBasePortEntry }
::= { dot1dPortCapabilitiesTable 1 }

Dot1dPortCapabilitiesEntry ::=
SEQUENCE {
dot1dPortCapabilities
BITS
}

dot1dPortCapabilities OBJECT-TYPE
SYNTAX BITS {
dot1qDot1qTagging(0), -- supports 802.1Q VLAN tagging of
-- frames and GVRP.
dot1qConfigurableAcceptableFrameTypes(1),
-- allows modified values of

Bell, et al. Standards Track [Page 22]

RFC 2674 Bridge MIB Extensions August 1999

-- dot1qPortAcceptableFrameTypes.
dot1qIngressFiltering(2)
-- supports the discarding of any
-- frame received on a Port whose
-- VLAN classification does not
-- include that Port in its Member
-- set.
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates the parts of IEEE 802.1D and 802.1Q that are
optional on a per-port basis that are implemented by
this device and are manageable through this MIB."
REFERENCE
"ISO/IEC 15802-3 Section 5.2,
IEEE 802.1Q/D11 Section 5.2"
::= { dot1dPortCapabilitiesEntry 1 }

-- -------------------------------------------------------------
-- the dot1dPriority group
-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- Port Priority Table
-- -------------------------------------------------------------

dot1dPortPriorityTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dPortPriorityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that contains information about every port that
is associated with this transparent bridge."
::= { dot1dPriority 1 }

dot1dPortPriorityEntry OBJECT-TYPE
SYNTAX Dot1dPortPriorityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of Default User Priorities for each port of a
transparent bridge. This is indexed by dot1dBasePort."
AUGMENTS { dot1dBasePortEntry }
::= { dot1dPortPriorityTable 1 }

Dot1dPortPriorityEntry ::=
SEQUENCE {

Bell, et al. Standards Track [Page 23]

RFC 2674 Bridge MIB Extensions August 1999

dot1dPortDefaultUserPriority
INTEGER,
dot1dPortNumTrafficClasses
INTEGER
}

dot1dPortDefaultUserPriority OBJECT-TYPE
SYNTAX INTEGER (0..7)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The default ingress User Priority for this port. This
only has effect on media, such as Ethernet, that do not
support native User Priority."
::= { dot1dPortPriorityEntry 1 }

dot1dPortNumTrafficClasses OBJECT-TYPE
SYNTAX INTEGER (1..8)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The number of egress traffic classes supported on this
port. This object may optionally be read-only."
::= { dot1dPortPriorityEntry 2 }

-- -------------------------------------------------------------
-- User Priority Regeneration Table
-- -------------------------------------------------------------

dot1dUserPriorityRegenTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dUserPriorityRegenEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of Regenerated User Priorities for each received
User Priority on each port of a bridge. The Regenerated
User Priority value may be used to index the Traffic
Class Table for each input port. This only has effect
on media that support native User Priority. The default
values for Regenerated User Priorities are the same as
the User Priorities."
REFERENCE
"ISO/IEC 15802-3 Section 6.4"
::= { dot1dPriority 2 }

Bell, et al. Standards Track [Page 24]

RFC 2674 Bridge MIB Extensions August 1999

dot1dUserPriorityRegenEntry OBJECT-TYPE
SYNTAX Dot1dUserPriorityRegenEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A mapping of incoming User Priority to a Regenerated
User Priority."
INDEX { dot1dBasePort, dot1dUserPriority }
::= { dot1dUserPriorityRegenTable 1 }

Dot1dUserPriorityRegenEntry ::=
SEQUENCE {
dot1dUserPriority
INTEGER,
dot1dRegenUserPriority
INTEGER
}

dot1dUserPriority OBJECT-TYPE
SYNTAX INTEGER (0..7)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The User Priority for a frame received on this port."
::= { dot1dUserPriorityRegenEntry 1 }

dot1dRegenUserPriority OBJECT-TYPE
SYNTAX INTEGER (0..7)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The Regenerated User Priority the incoming User
Priority is mapped to for this port."
::= { dot1dUserPriorityRegenEntry 2 }

-- -------------------------------------------------------------
-- Traffic Class Table
-- -------------------------------------------------------------

dot1dTrafficClassTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dTrafficClassEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table mapping evaluated User Priority to Traffic
Class, for forwarding by the bridge. Traffic class is a
number in the range (0..(dot1dPortNumTrafficClasses-1))."
REFERENCE

Bell, et al. Standards Track [Page 25]

RFC 2674 Bridge MIB Extensions August 1999

"ISO/IEC 15802-3 Table 7-2"
::= { dot1dPriority 3 }

dot1dTrafficClassEntry OBJECT-TYPE
SYNTAX Dot1dTrafficClassEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"User Priority to Traffic Class mapping."
INDEX { dot1dBasePort, dot1dTrafficClassPriority }
::= { dot1dTrafficClassTable 1 }

Dot1dTrafficClassEntry ::=
SEQUENCE {
dot1dTrafficClassPriority
INTEGER,
dot1dTrafficClass
INTEGER
}

dot1dTrafficClassPriority OBJECT-TYPE
SYNTAX INTEGER (0..7)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Priority value determined for the received frame.
This value is equivalent to the priority indicated in
the tagged frame received, or one of the evaluated
priorities, determined according to the media-type.

For untagged frames received from Ethernet media, this
value is equal to the dot1dPortDefaultUserPriority value
for the ingress port.

For untagged frames received from non-Ethernet media,
this value is equal to the dot1dRegenUserPriority value
for the ingress port and media-specific user priority."
::= { dot1dTrafficClassEntry 1 }

dot1dTrafficClass OBJECT-TYPE
SYNTAX INTEGER (0..7)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The Traffic Class the received frame is mapped to."
::= { dot1dTrafficClassEntry 2 }

-- -------------------------------------------------------------

Bell, et al. Standards Track [Page 26]

RFC 2674 Bridge MIB Extensions August 1999

-- Outbound Access Priority Table
-- -------------------------------------------------------------

dot1dPortOutboundAccessPriorityTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dPortOutboundAccessPriorityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table mapping Regenerated User Priority to Outbound
Access Priority. This is a fixed mapping for all port
types, with two options for 802.5 Token Ring."
REFERENCE
"ISO/IEC 15802-3 Table 7-3"
::= { dot1dPriority 4 }

dot1dPortOutboundAccessPriorityEntry OBJECT-TYPE
SYNTAX Dot1dPortOutboundAccessPriorityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Regenerated User Priority to Outbound Access Priority
mapping."
INDEX { dot1dBasePort, dot1dRegenUserPriority }
::= { dot1dPortOutboundAccessPriorityTable 1 }

Dot1dPortOutboundAccessPriorityEntry ::=
SEQUENCE {
dot1dPortOutboundAccessPriority
INTEGER
}

dot1dPortOutboundAccessPriority OBJECT-TYPE
SYNTAX INTEGER (0..7)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Outbound Access Priority the received frame is
mapped to."
::= { dot1dPortOutboundAccessPriorityEntry 1 }

-- -------------------------------------------------------------
-- the dot1dGarp group
-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- The GARP Port Table
-- -------------------------------------------------------------

Bell, et al. Standards Track [Page 27]

RFC 2674 Bridge MIB Extensions August 1999

dot1dPortGarpTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dPortGarpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of GARP control information about every bridge
port. This is indexed by dot1dBasePort."
::= { dot1dGarp 1 }

dot1dPortGarpEntry OBJECT-TYPE
SYNTAX Dot1dPortGarpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"GARP control information for a bridge port."
AUGMENTS { dot1dBasePortEntry }
::= { dot1dPortGarpTable 1 }

Dot1dPortGarpEntry ::=
SEQUENCE {
dot1dPortGarpJoinTime
TimeInterval,
dot1dPortGarpLeaveTime
TimeInterval,
dot1dPortGarpLeaveAllTime
TimeInterval
}

dot1dPortGarpJoinTime OBJECT-TYPE
SYNTAX TimeInterval
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The GARP Join time, in centiseconds."
DEFVAL { 20 }
::= { dot1dPortGarpEntry 1 }

dot1dPortGarpLeaveTime OBJECT-TYPE
SYNTAX TimeInterval
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The GARP Leave time, in centiseconds."
DEFVAL { 60 }
::= { dot1dPortGarpEntry 2 }

Bell, et al. Standards Track [Page 28]

RFC 2674 Bridge MIB Extensions August 1999

dot1dPortGarpLeaveAllTime OBJECT-TYPE
SYNTAX TimeInterval
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The GARP LeaveAll time, in centiseconds."
DEFVAL { 1000 }
::= { dot1dPortGarpEntry 3 }

-- -------------------------------------------------------------
-- The GMRP Port Configuration and Status Table
-- -------------------------------------------------------------

dot1dPortGmrpTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dPortGmrpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of GMRP control and status information about
every bridge port. Augments the dot1dBasePortTable."
::= { dot1dGmrp 1 }

dot1dPortGmrpEntry OBJECT-TYPE
SYNTAX Dot1dPortGmrpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"GMRP control and status information for a bridge port."
AUGMENTS { dot1dBasePortEntry }
::= { dot1dPortGmrpTable 1 }

Dot1dPortGmrpEntry ::=
SEQUENCE {
dot1dPortGmrpStatus
EnabledStatus,
dot1dPortGmrpFailedRegistrations
Counter32,
dot1dPortGmrpLastPduOrigin
MacAddress
}

dot1dPortGmrpStatus OBJECT-TYPE
SYNTAX EnabledStatus
MAX-ACCESS read-write
STATUS current

Bell, et al. Standards Track [Page 29]

RFC 2674 Bridge MIB Extensions August 1999

DESCRIPTION
"The administrative state of GMRP operation on this port. The
value enabled(1) indicates that GMRP is enabled on this port
in all VLANs as long as dot1dGmrpStatus is also enabled(1).
A value of disabled(2) indicates that GMRP is disabled on
this port in all VLANs: any GMRP packets received will
be silently discarded and no GMRP registrations will be
propagated from other ports. Setting this to a value of
enabled(1) will be stored by the agent but will only take
effect on the GMRP protocol operation if dot1dGmrpStatus
also indicates the value enabled(1). This object affects
all GMRP Applicant and Registrar state machines on this
port. A transition from disabled(2) to enabled(1) will
cause a reset of all GMRP state machines on this port."
DEFVAL { enabled }
::= { dot1dPortGmrpEntry 1 }

dot1dPortGmrpFailedRegistrations OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of failed GMRP registrations, for any
reason, in all VLANs, on this port."
::= { dot1dPortGmrpEntry 2 }

dot1dPortGmrpLastPduOrigin OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Source MAC Address of the last GMRP message
received on this port."
::= { dot1dPortGmrpEntry 3 }

-- -------------------------------------------------------------
-- High Capacity Port Table for Transparent Bridges
-- -------------------------------------------------------------

dot1dTpHCPortTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dTpHCPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that contains information about every high
capacity port that is associated with this transparent
bridge."
::= { dot1dTp 5 }

Bell, et al. Standards Track [Page 30]

RFC 2674 Bridge MIB Extensions August 1999

dot1dTpHCPortEntry OBJECT-TYPE
SYNTAX Dot1dTpHCPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Statistics information for each high capacity port of a
transparent bridge."
INDEX { dot1dTpPort }
::= { dot1dTpHCPortTable 1 }

Dot1dTpHCPortEntry ::=
SEQUENCE {
dot1dTpHCPortInFrames
Counter64,
dot1dTpHCPortOutFrames
Counter64,
dot1dTpHCPortInDiscards
Counter64
}

dot1dTpHCPortInFrames OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of frames that have been received by this
port from its segment. Note that a frame received on
the interface corresponding to this port is only counted
by this object if and only if it is for a protocol being
processed by the local bridging function, including
bridge management frames."
REFERENCE
"ISO/IEC 15802-3 Section 14.6.1.1.3"
::= { dot1dTpHCPortEntry 1 }

dot1dTpHCPortOutFrames OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of frames that have been transmitted by this
port to its segment. Note that a frame transmitted on
the interface corresponding to this port is only counted
by this object if and only if it is for a protocol being
processed by the local bridging function, including
bridge management frames."

Bell, et al. Standards Track [Page 31]

RFC 2674 Bridge MIB Extensions August 1999

REFERENCE
"ISO/IEC 15802-3 Section 14.6.1.1.3"
::= { dot1dTpHCPortEntry 2 }

dot1dTpHCPortInDiscards OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Count of valid frames that have been received by this
port from its segment which were discarded (i.e.,
filtered) by the Forwarding Process."
REFERENCE
"ISO/IEC 15802-3 Section 14.6.1.1.3"
::= { dot1dTpHCPortEntry 3 }

-- ----------------------------------------------------
-- Upper part of High Capacity Port Table for Transparent Bridges
-- ----------------------------------------------------

dot1dTpPortOverflowTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dTpPortOverflowEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that contains the most-significant bits of
statistics counters for ports that are associated with this
transparent bridge that are on high capacity interfaces, as
defined in the conformance clauses for this table. This table
is provided as a way to read 64-bit counters for agents which
support only SNMPv1.

Note that the reporting of most-significant and
least-significant counter bits separately runs the risk of
missing an overflow of the lower bits in the interval between
sampling. The manager must be aware of this possibility, even
within the same varbindlist, when interpreting the results of
a request or asynchronous notification."
::= { dot1dTp 6 }

dot1dTpPortOverflowEntry OBJECT-TYPE
SYNTAX Dot1dTpPortOverflowEntry
MAX-ACCESS not-accessible

Bell, et al. Standards Track [Page 32]

RFC 2674 Bridge MIB Extensions August 1999

STATUS current
DESCRIPTION
"The most significant bits of statistics counters for a high
capacity interface of a transparent bridge. Each object is
associated with a corresponding object in dot1dTpPortTable
which indicates the least significant bits of the counter."
INDEX { dot1dTpPort }
::= { dot1dTpPortOverflowTable 1 }

Dot1dTpPortOverflowEntry ::=
SEQUENCE {
dot1dTpPortInOverflowFrames
Counter32,
dot1dTpPortOutOverflowFrames
Counter32,
dot1dTpPortInOverflowDiscards
Counter32
}

dot1dTpPortInOverflowFrames OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated dot1dTpPortInFrames
counter has overflowed."
REFERENCE
"ISO/IEC 15802-3 Section 14.6.1.1.3"
::= { dot1dTpPortOverflowEntry 1 }

dot1dTpPortOutOverflowFrames OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated dot1dTpPortOutFrames
counter has overflowed."
REFERENCE
"ISO/IEC 15802-3 Section 14.6.1.1.3"
::= { dot1dTpPortOverflowEntry 2 }

dot1dTpPortInOverflowDiscards OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current

Bell, et al. Standards Track [Page 33]

RFC 2674 Bridge MIB Extensions August 1999

DESCRIPTION
"The number of times the associated
dot1dTpPortInDiscards counter has overflowed."
REFERENCE
"ISO/IEC 15802-3 Section 14.6.1.1.3"
::= { dot1dTpPortOverflowEntry 3 }

-- -------------------------------------------------------------
-- IEEE 802.1p MIB - Conformance Information
-- -------------------------------------------------------------

pBridgeConformance OBJECT IDENTIFIER ::= { pBridgeMIB 2 }

pBridgeGroups OBJECT IDENTIFIER ::= { pBridgeConformance 1 }

pBridgeCompliances OBJECT IDENTIFIER
::= { pBridgeConformance 2 }

-- -------------------------------------------------------------
-- units of conformance
-- -------------------------------------------------------------

pBridgeExtCapGroup OBJECT-GROUP
OBJECTS {
dot1dDeviceCapabilities,
dot1dPortCapabilities
}
STATUS current
DESCRIPTION
"A collection of objects indicating the optional
capabilites of the device."
::= { pBridgeGroups 1 }

pBridgeDeviceGmrpGroup OBJECT-GROUP
OBJECTS {
dot1dGmrpStatus
}
STATUS current
DESCRIPTION
"A collection of objects providing device-level control
for the Multicast Filtering extended bridge services."
::= { pBridgeGroups 2 }

Bell, et al. Standards Track [Page 34]

RFC 2674 Bridge MIB Extensions August 1999

pBridgeDevicePriorityGroup OBJECT-GROUP
OBJECTS {
dot1dTrafficClassesEnabled
}
STATUS current
DESCRIPTION
"A collection of objects providing device-level control
for the Priority services."
::= { pBridgeGroups 3 }

pBridgeDefaultPriorityGroup OBJECT-GROUP
OBJECTS {
dot1dPortDefaultUserPriority
}
STATUS current
DESCRIPTION
"A collection of objects defining the User Priority
applicable to each port for media which do not support
native User Priority."
::= { pBridgeGroups 4 }

pBridgeRegenPriorityGroup OBJECT-GROUP
OBJECTS {
dot1dRegenUserPriority
}
STATUS current
DESCRIPTION
"A collection of objects defining the User Priorities
applicable to each port for media which support native
User Priority."
::= { pBridgeGroups 5 }

pBridgePriorityGroup OBJECT-GROUP
OBJECTS {
dot1dPortNumTrafficClasses,
dot1dTrafficClass
}
STATUS current
DESCRIPTION
"A collection of objects defining the traffic classes
within a bridge for each evaluated User Priority."
::= { pBridgeGroups 6 }

Bell, et al. Standards Track [Page 35]

RFC 2674 Bridge MIB Extensions August 1999

pBridgeAccessPriorityGroup OBJECT-GROUP
OBJECTS {
dot1dPortOutboundAccessPriority
}
STATUS current
DESCRIPTION
"A collection of objects defining the media dependent
outbound access level for each priority."
::= { pBridgeGroups 7 }

pBridgePortGarpGroup OBJECT-GROUP
OBJECTS {
dot1dPortGarpJoinTime,
dot1dPortGarpLeaveTime,
dot1dPortGarpLeaveAllTime
}
STATUS current
DESCRIPTION
"A collection of objects providing port level control
and status information for GARP operation."
::= { pBridgeGroups 8 }

pBridgePortGmrpGroup OBJECT-GROUP
OBJECTS {
dot1dPortGmrpStatus,
dot1dPortGmrpFailedRegistrations,
dot1dPortGmrpLastPduOrigin
}
STATUS current
DESCRIPTION
"A collection of objects providing port level control
and status information for GMRP operation."
::= { pBridgeGroups 9 }

pBridgeHCPortGroup OBJECT-GROUP
OBJECTS {
dot1dTpHCPortInFrames,
dot1dTpHCPortOutFrames,
dot1dTpHCPortInDiscards
}
STATUS current
DESCRIPTION
"A collection of objects providing 64-bit statistics
counters for high capacity bridge ports."
::= { pBridgeGroups 10 }

Bell, et al. Standards Track [Page 36]

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pBridgePortOverflowGroup OBJECT-GROUP
OBJECTS {
dot1dTpPortInOverflowFrames,
dot1dTpPortOutOverflowFrames,
dot1dTpPortInOverflowDiscards
}
STATUS current
DESCRIPTION
"A collection of objects providing overflow statistics
counters for high capacity bridge ports."
::= { pBridgeGroups 11 }

-- -------------------------------------------------------------
-- compliance statements
-- -------------------------------------------------------------

pBridgeCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for device support of Priority
and Multicast Filtering extended bridging services."

MODULE
MANDATORY-GROUPS { pBridgeExtCapGroup }

GROUP pBridgeDeviceGmrpGroup
DESCRIPTION
"This group is mandatory for devices supporting the GMRP
application, defined by IEEE 802.1D Extended Filtering
Services."

GROUP pBridgeDevicePriorityGroup
DESCRIPTION
"This group is mandatory only for devices supporting
the priority forwarding operations defined by IEEE
802.1D."

GROUP pBridgeDefaultPriorityGroup
DESCRIPTION
"This group is mandatory only for devices supporting
the priority forwarding operations defined by the
extended bridge services with media types, such as
Ethernet, that do not support native User Priority."

Bell, et al. Standards Track [Page 37]

RFC 2674 Bridge MIB Extensions August 1999

GROUP pBridgeRegenPriorityGroup
DESCRIPTION
"This group is mandatory only for devices supporting
the priority forwarding operations defined by IEEE 802.1D
and which have interface media types that support
native User Priority e.g. IEEE 802.5."

GROUP pBridgePriorityGroup
DESCRIPTION
"This group is mandatory only for devices supporting
the priority forwarding operations defined by IEEE 802.1D."

GROUP pBridgeAccessPriorityGroup
DESCRIPTION
"This group is optional and is relevant only for devices
supporting the priority forwarding operations defined by
IEEE 802.1D and which have interface media types that support
native Access Priority e.g. IEEE 802.5."

GROUP pBridgePortGarpGroup
DESCRIPTION
"This group is mandatory for devices supporting any
of the GARP applications: e.g. GMRP, defined by the
extended filtering services of 802.1D; or GVRP,
defined by 802.1Q (refer to the Q-BRIDGE-MIB for
conformance statements for GVRP)."

GROUP pBridgePortGmrpGroup
DESCRIPTION
"This group is mandatory for devices supporting the
GMRP application, as defined by IEEE 802.1D Extended
Filtering Services."

GROUP pBridgeHCPortGroup
DESCRIPTION
"Support for this group in a device is mandatory for those
bridge ports which map to network interfaces that have the
value of the corresponding instance of ifSpeed
greater than 650,000,000 bits/second."

GROUP pBridgePortOverflowGroup
DESCRIPTION
"Support for this group in a device is mandatory for those
bridge ports which map to network interfaces that have the
value of the corresponding instance of ifSpeed
greater than 650,000,000 bits/second."

Bell, et al. Standards Track [Page 38]

RFC 2674 Bridge MIB Extensions August 1999

OBJECT dot1dPortNumTrafficClasses
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT dot1dTrafficClass
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT dot1dRegenUserPriority
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

::= { pBridgeCompliances 1 }

END

5. Definitions for Virtual Bridge MIB

Q-BRIDGE-MIB DEFINITIONS ::= BEGIN

-- -------------------------------------------------------------
-- MIB for IEEE 802.1Q Devices
-- -------------------------------------------------------------

IMPORTS
MODULE-IDENTITY, OBJECT-TYPE,
Counter32, Counter64, Unsigned32, TimeTicks
FROM SNMPv2-SMI
RowStatus, TruthValue, TEXTUAL-CONVENTION, MacAddress
FROM SNMPv2-TC
SnmpAdminString
FROM SNMP-FRAMEWORK-MIB
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF
dot1dBridge, dot1dBasePortEntry, dot1dBasePort
FROM BRIDGE-MIB
EnabledStatus
FROM P-BRIDGE-MIB
TimeFilter
FROM RMON2-MIB;

qBridgeMIB MODULE-IDENTITY
LAST-UPDATED "9908250000Z"
ORGANIZATION "IETF Bridge MIB Working Group"

Bell, et al. Standards Track [Page 39]

RFC 2674 Bridge MIB Extensions August 1999

CONTACT-INFO
" Les Bell
Postal: 3Com Europe Ltd.
3Com Centre, Boundary Way
Hemel Hempstead, Herts. HP2 7YU
UK
Phone: +44 1442 438025
Email: [email protected]

Andrew Smith
Postal: Extreme Networks
3585 Monroe St.
Santa Clara CA 95051
USA
Phone: +1 408 579 2821
Email: [email protected]

Paul Langille
Postal: Newbridge Networks
5 Corporate Drive
Andover, MA 01810
USA
Phone: +1 978 691 4665
Email: [email protected]

Anil Rijhsinghani
Postal: Cabletron Systems
50 Minuteman Road
Andover, MA 01810
USA
Phone: +1 978 684 1295
Email: [email protected]

Keith McCloghrie
Postal: cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
Phone: +1 408 526 5260
Email: [email protected]"
DESCRIPTION
"The VLAN Bridge MIB module for managing Virtual Bridged
Local Area Networks, as defined by IEEE 802.1Q-1998."

Bell, et al. Standards Track [Page 40]

RFC 2674 Bridge MIB Extensions August 1999

-- revision history

REVISION "9908250000Z"
DESCRIPTION
"Initial version, published as RFC 2674."

::= { dot1dBridge 7 }

qBridgeMIBObjects OBJECT IDENTIFIER ::= { qBridgeMIB 1 }

-- -------------------------------------------------------------
-- Textual Conventions
-- -------------------------------------------------------------

PortList ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Each octet within this value specifies a set of eight
ports, with the first octet specifying ports 1 through
8, the second octet specifying ports 9 through 16, etc.
Within each octet, the most significant bit represents
the lowest numbered port, and the least significant bit
represents the highest numbered port. Thus, each port
of the bridge is represented by a single bit within the
value of this object. If that bit has a value of '1'
then that port is included in the set of ports; the port
is not included if its bit has a value of '0'."
SYNTAX OCTET STRING

VlanIndex ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A value used to index per-VLAN tables: values of 0 and
4095 are not permitted; if the value is between 1 and
4094 inclusive, it represents an IEEE 802.1Q VLAN-ID with
global scope within a given bridged domain (see VlanId
textual convention). If the value is greater than 4095
then it represents a VLAN with scope local to the
particular agent, i.e. one without a global VLAN-ID
assigned to it. Such VLANs are outside the scope of
IEEE 802.1Q but it is convenient to be able to manage them
in the same way using this MIB."
SYNTAX Unsigned32

Bell, et al. Standards Track [Page 41]

RFC 2674 Bridge MIB Extensions August 1999

VlanId ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A 12-bit VLAN ID used in the VLAN Tag header."
SYNTAX INTEGER (1..4094)

-- -------------------------------------------------------------
-- groups in the Q-BRIDGE MIB
-- -------------------------------------------------------------

dot1qBase OBJECT IDENTIFIER ::= { qBridgeMIBObjects 1 }
dot1qTp OBJECT IDENTIFIER ::= { qBridgeMIBObjects 2 }
dot1qStatic OBJECT IDENTIFIER ::= { qBridgeMIBObjects 3 }
dot1qVlan OBJECT IDENTIFIER ::= { qBridgeMIBObjects 4 }

-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- dot1qBase group
-- -------------------------------------------------------------

dot1qVlanVersionNumber OBJECT-TYPE
SYNTAX INTEGER {
version1(1)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The version number of IEEE 802.1Q that this device
supports."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.1.1"
::= { dot1qBase 1 }

dot1qMaxVlanId OBJECT-TYPE
SYNTAX VlanId
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum IEEE 802.1Q VLAN ID that this device
supports."
REFERENCE
"IEEE 802.1Q/D11 Section 9.3.2.3"
::= { dot1qBase 2 }

Bell, et al. Standards Track [Page 42]

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dot1qMaxSupportedVlans OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of IEEE 802.1Q VLANs that this
device supports."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.1.1"
::= { dot1qBase 3 }

dot1qNumVlans OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The current number of IEEE 802.1Q VLANs that are
configured in this device."
REFERENCE
"IEEE 802.1Q/D11 Section 12.7.1.1"
::= { dot1qBase 4 }

dot1qGvrpStatus OBJECT-TYPE
SYNTAX EnabledStatus
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The administrative status requested by management for
GVRP. The value enabled(1) indicates that GVRP should
be enabled on this device, on all ports for which it has
not been specifically disabled. When disabled(2), GVRP
is disabled on all ports and all GVRP packets will be
forwarded transparently. This object affects all GVRP
Applicant and Registrar state machines. A transition
from disabled(2) to enabled(1) will cause a reset of all
GVRP state machines on all ports."
DEFVAL { enabled }
::= { dot1qBase 5 }

-- -------------------------------------------------------------
-- the dot1qTp group
-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- the current Filtering Database Table
-- -------------------------------------------------------------

Bell, et al. Standards Track [Page 43]

RFC 2674 Bridge MIB Extensions August 1999

dot1qFdbTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qFdbEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that contains configuration and control
information for each Filtering Database currently
operating on this device. Entries in this table appear
automatically when VLANs are assigned FDB IDs in the
dot1qVlanCurrentTable."
::= { dot1qTp 1 }

dot1qFdbEntry OBJECT-TYPE
SYNTAX Dot1qFdbEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about a specific Filtering Database."
INDEX { dot1qFdbId }
::= { dot1qFdbTable 1 }

Dot1qFdbEntry ::=
SEQUENCE {
dot1qFdbId
Unsigned32,
dot1qFdbDynamicCount
Counter32
}

dot1qFdbId OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The identity of this Filtering Database."
::= { dot1qFdbEntry 1 }

dot1qFdbDynamicCount OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The current number of dynamic entries in this
Filtering Database."
REFERENCE
"IEEE 802.1Q/D11 Section 12.7.1.1.3"
::= { dot1qFdbEntry 2 }

Bell, et al. Standards Track [Page 44]

RFC 2674 Bridge MIB Extensions August 1999

-- -------------------------------------------------------------
-- Multiple Forwarding Databases for 802.1Q Transparent devices
-- This table is an alternative to the dot1dTpFdbTable,
-- previously defined for 802.1D devices which only support a
-- single Forwarding Database.
-- -------------------------------------------------------------

dot1qTpFdbTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qTpFdbEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that contains information about unicast entries
for which the device has forwarding and/or filtering
information. This information is used by the
transparent bridging function in determining how to
propagate a received frame."
REFERENCE
"IEEE 802.1Q/D11 Section 12.7.7"
::= { dot1qTp 2 }

dot1qTpFdbEntry OBJECT-TYPE
SYNTAX Dot1qTpFdbEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about a specific unicast MAC address for
which the device has some forwarding and/or filtering
information."
INDEX { dot1qFdbId, dot1qTpFdbAddress }
::= { dot1qTpFdbTable 1 }

Dot1qTpFdbEntry ::=
SEQUENCE {
dot1qTpFdbAddress
MacAddress,
dot1qTpFdbPort
INTEGER,
dot1qTpFdbStatus
INTEGER
}

dot1qTpFdbAddress OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS not-accessible
STATUS current

Bell, et al. Standards Track [Page 45]

RFC 2674 Bridge MIB Extensions August 1999

DESCRIPTION
"A unicast MAC address for which the device has
forwarding and/or filtering information."
::= { dot1qTpFdbEntry 1 }

dot1qTpFdbPort OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Either the value '0', or the port number of the port on
which a frame having a source address equal to the value
of the corresponding instance of dot1qTpFdbAddress has
been seen. A value of '0' indicates that the port
number has not been learned but that the device does
have some forwarding/filtering information about this
address (e.g. in the dot1qStaticUnicastTable).
Implementors are encouraged to assign the port value to
this object whenever it is learned even for addresses
for which the corresponding value of dot1qTpFdbStatus is
not learned(3)."
::= { dot1qTpFdbEntry 2 }

dot1qTpFdbStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1),
invalid(2),
learned(3),
self(4),
mgmt(5)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The status of this entry. The meanings of the values
are:
other(1) - none of the following. This may include
the case where some other MIB object (not the
corresponding instance of dot1qTpFdbPort, nor an
entry in the dot1qStaticUnicastTable) is being
used to determine if and how frames addressed to
the value of the corresponding instance of
dot1qTpFdbAddress are being forwarded.
invalid(2) - this entry is no longer valid (e.g., it
was learned but has since aged out), but has not
yet been flushed from the table.
learned(3) - the value of the corresponding instance
of dot1qTpFdbPort was learned and is being used.

Bell, et al. Standards Track [Page 46]

RFC 2674 Bridge MIB Extensions August 1999

self(4) - the value of the corresponding instance of
dot1qTpFdbAddress represents one of the device's
addresses. The corresponding instance of
dot1qTpFdbPort indicates which of the device's
ports has this address.
mgmt(5) - the value of the corresponding instance of
dot1qTpFdbAddress is also the value of an
existing instance of dot1qStaticAddress."
::= { dot1qTpFdbEntry 3 }

-- -------------------------------------------------------------
-- Dynamic Group Registration Table
-- -------------------------------------------------------------

dot1qTpGroupTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qTpGroupEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing filtering information for VLANs
configured into the bridge by (local or network)
management, or learnt dynamically, specifying the set of
ports to which frames received on a VLAN for this FDB
and containing a specific Group destination address are
allowed to be forwarded."
::= { dot1qTp 3 }

dot1qTpGroupEntry OBJECT-TYPE
SYNTAX Dot1qTpGroupEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Filtering information configured into the bridge by
management, or learnt dynamically, specifying the set of
ports to which frames received on a VLAN and containing
a specific Group destination address, are allowed to be
forwarded. The subset of these ports learnt dynamically
is also provided."
INDEX { dot1qVlanIndex, dot1qTpGroupAddress }
::= { dot1qTpGroupTable 1 }

Dot1qTpGroupEntry ::=
SEQUENCE {
dot1qTpGroupAddress
MacAddress,
dot1qTpGroupEgressPorts
PortList,
dot1qTpGroupLearnt

Bell, et al. Standards Track [Page 47]

RFC 2674 Bridge MIB Extensions August 1999

PortList
}

dot1qTpGroupAddress OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The destination Group MAC address in a frame to which
this entry's filtering information applies."
::= { dot1qTpGroupEntry 1 }

dot1qTpGroupEgressPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The complete set of ports, in this VLAN, to which
frames destined for this Group MAC address are currently
being explicitly forwarded. This does not include ports
for which this address is only implicitly forwarded, in
the dot1qForwardAllPorts list."
::= { dot1qTpGroupEntry 2 }

dot1qTpGroupLearnt OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The subset of ports in dot1qTpGroupEgressPorts which
were learnt by GMRP or some other dynamic mechanism, in
this Filtering database."
::= { dot1qTpGroupEntry 3 }

-- -------------------------------------------------------------
-- Service Requirements Group
-- -------------------------------------------------------------

dot1qForwardAllTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qForwardAllEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing forwarding information for each
VLAN, specifying the set of ports to which forwarding of
all multicasts applies, configured statically by
management or dynamically by GMRP. An entry appears in
this table for all VLANs that are currently

Bell, et al. Standards Track [Page 48]

RFC 2674 Bridge MIB Extensions August 1999

instantiated."
REFERENCE
"IEEE 802.1Q/D11 Section 12.7.2, 12.7.7"
::= { dot1qTp 4 }

dot1qForwardAllEntry OBJECT-TYPE
SYNTAX Dot1qForwardAllEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Forwarding information for a VLAN, specifying the set
of ports to which all multicasts should be forwarded,
configured statically by management or dynamically by
GMRP."
INDEX { dot1qVlanIndex }
::= { dot1qForwardAllTable 1 }

Dot1qForwardAllEntry ::=
SEQUENCE {
dot1qForwardAllPorts
PortList,
dot1qForwardAllStaticPorts
PortList,
dot1qForwardAllForbiddenPorts
PortList
}

dot1qForwardAllPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The complete set of ports in this VLAN to which all
multicast group-addressed frames are to be forwarded.
This includes ports for which this need has been
determined dynamically by GMRP, or configured statically
by management."
::= { dot1qForwardAllEntry 1 }

dot1qForwardAllStaticPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-write
STATUS current

Bell, et al. Standards Track [Page 49]

RFC 2674 Bridge MIB Extensions August 1999

DESCRIPTION
"The set of ports configured by management in this VLAN
to which all multicast group-addressed frames are to be
forwarded. Ports entered in this list will also appear
in the complete set shown by dot1qForwardAllPorts. This
value will be restored after the device is reset. This
only applies to ports that are members of the VLAN,
defined by dot1qVlanCurrentEgressPorts. A port may not
be added in this set if it is already a member of the
set of ports in dot1qForwardAllForbiddenPorts. The
default value is a string of ones of appropriate length,
to indicate standard non-EFS behaviour, i.e. forward
all multicasts to all ports."
::= { dot1qForwardAllEntry 2 }

dot1qForwardAllForbiddenPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The set of ports configured by management in this VLAN
for which the Service Requirement attribute Forward All
Multicast Groups may not be dynamically registered by
GMRP. This value will be restored after the device is
reset. A port may not be added in this set if it is
already a member of the set of ports in
dot1qForwardAllStaticPorts. The default value is a
string of zeros of appropriate length."
::= { dot1qForwardAllEntry 3 }

dot1qForwardUnregisteredTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qForwardUnregisteredEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing forwarding information for each
VLAN, specifying the set of ports to which forwarding of
multicast group-addressed frames for which there is no
more specific forwarding information applies. This is
configured statically by management and determined
dynamically by GMRP. An entry appears in this table for
all VLANs that are currently instantiated."
REFERENCE
"IEEE 802.1Q/D11 Section 12.7.2, 12.7.7"
::= { dot1qTp 5 }

dot1qForwardUnregisteredEntry OBJECT-TYPE
SYNTAX Dot1qForwardUnregisteredEntry

Bell, et al. Standards Track [Page 50]

RFC 2674 Bridge MIB Extensions August 1999

MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Forwarding information for a VLAN, specifying the set
of ports to which all multicasts for which there is no
more specific forwarding information shall be forwarded.
This is configured statically by management or
dynamically by GMRP."
INDEX { dot1qVlanIndex }
::= { dot1qForwardUnregisteredTable 1 }

Dot1qForwardUnregisteredEntry ::=
SEQUENCE {
dot1qForwardUnregisteredPorts
PortList,
dot1qForwardUnregisteredStaticPorts
PortList,
dot1qForwardUnregisteredForbiddenPorts
PortList
}

dot1qForwardUnregisteredPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The complete set of ports in this VLAN to which
multicast group-addressed frames for which there is no
more specific forwarding information will be forwarded.
This includes ports for which this need has been
determined dynamically by GMRP, or configured statically
by management."
::= { dot1qForwardUnregisteredEntry 1 }

dot1qForwardUnregisteredStaticPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The set of ports configured by management, in this
VLAN, to which multicast group-addressed frames for
which there is no more specific forwarding information
are to be forwarded. Ports entered in this list will
also appear in the complete set shown by
dot1qForwardUnregisteredPorts. This value will be
restored after the device is reset. A port may not be
added in this set if it is already a member of the set
of ports in dot1qForwardUnregisteredForbiddenPorts. The

Bell, et al. Standards Track [Page 51]

RFC 2674 Bridge MIB Extensions August 1999

default value is a string of zeros of appropriate
length, although this has no effect with the default
value of dot1qForwardAllStaticPorts."
::= { dot1qForwardUnregisteredEntry 2 }

dot1qForwardUnregisteredForbiddenPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The set of ports configured by management in this VLAN
for which the Service Requirement attribute Forward
Unregistered Multicast Groups may not be dynamically
registered by GMRP. This value will be restored after
the device is reset. A port may not be added in this
set if it is already a member of the set of ports in
dot1qForwardUnregisteredStaticPorts. The default value
is a string of zeros of appropriate length."
::= { dot1qForwardUnregisteredEntry 3 }

-- -------------------------------------------------------------
-- The Static (Destination-Address Filtering) Database
-- -------------------------------------------------------------

dot1qStaticUnicastTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qStaticUnicastEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing filtering information for Unicast
MAC addresses for each Filtering Database, configured
into the device by (local or network) management
specifying the set of ports to which frames received
from specific ports and containing specific unicast
destination addresses are allowed to be forwarded. A
value of zero in this table as the port number from
which frames with a specific destination address are
received, is used to specify all ports for which there
is no specific entry in this table for that particular
destination address. Entries are valid for unicast
addresses only."
REFERENCE
"IEEE 802.1Q/D11 Section 12.7.7,
ISO/IEC 15802-3 Section 7.9.1"
::= { dot1qStatic 1 }

Bell, et al. Standards Track [Page 52]

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dot1qStaticUnicastEntry OBJECT-TYPE
SYNTAX Dot1qStaticUnicastEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Filtering information configured into the device by
(local or network) management specifying the set of
ports to which frames received from a specific port and
containing a specific unicast destination address are
allowed to be forwarded."
INDEX {
dot1qFdbId,
dot1qStaticUnicastAddress,
dot1qStaticUnicastReceivePort
}
::= { dot1qStaticUnicastTable 1 }

Dot1qStaticUnicastEntry ::=
SEQUENCE {
dot1qStaticUnicastAddress
MacAddress,
dot1qStaticUnicastReceivePort
INTEGER,
dot1qStaticUnicastAllowedToGoTo
PortList,
dot1qStaticUnicastStatus
INTEGER
}

dot1qStaticUnicastAddress OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The destination MAC address in a frame to which this
entry's filtering information applies. This object must
take the value of a unicast address."
::= { dot1qStaticUnicastEntry 1 }

dot1qStaticUnicastReceivePort OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Either the value '0', or the port number of the port
from which a frame must be received in order for this
entry's filtering information to apply. A value of zero
indicates that this entry applies on all ports of the

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RFC 2674 Bridge MIB Extensions August 1999

device for which there is no other applicable entry."
::= { dot1qStaticUnicastEntry 2 }

dot1qStaticUnicastAllowedToGoTo OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The set of ports for which a frame with a specific
unicast address will be flooded in the event that it
has not been learned. It also specifies the set of
ports a specific unicast address may be dynamically
learnt on. The dot1qTpFdbTable will have an equivalent
entry with a dot1qTpFdbPort value of '0' until this
address has been learnt, when it will be updated with
the port the address has been seen on. This only
applies to ports that are members of the VLAN, defined
by dot1qVlanCurrentEgressPorts. The default value of
this object is a string of ones of appropriate length."
REFERENCE
"IEEE 802.1Q/D11 Table 8-5, ISO/IEC 15802-3 Table 7-5"
::= { dot1qStaticUnicastEntry 3 }

dot1qStaticUnicastStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1),
invalid(2),
permanent(3),
deleteOnReset(4),
deleteOnTimeout(5)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object indicates the status of this entry.
other(1) - this entry is currently in use but
the conditions under which it will remain
so differ from the following values.
invalid(2) - writing this value to the object
removes the corresponding entry.
permanent(3) - this entry is currently in use
and will remain so after the next reset of
the bridge.
deleteOnReset(4) - this entry is currently in
use and will remain so until the next
reset of the bridge.

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RFC 2674 Bridge MIB Extensions August 1999

deleteOnTimeout(5) - this entry is currently in
use and will remain so until it is aged out."
DEFVAL { permanent }
::= { dot1qStaticUnicastEntry 4 }

dot1qStaticMulticastTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qStaticMulticastEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing filtering information for Multicast
and Broadcast MAC addresses for each VLAN, configured
into the device by (local or network) management
specifying the set of ports to which frames received
from specific ports and containing specific Multicast
and Broadcast destination addresses are allowed to be
forwarded. A value of zero in this table as the port
number from which frames with a specific destination
address are received, is used to specify all ports for
which there is no specific entry in this table for that
particular destination address. Entries are valid for
Multicast and Broadcast addresses only."
REFERENCE
"IEEE 802.1Q/D11 Section 12.7.7,
ISO/IEC 15802-3 Section 7.9.1"
::= { dot1qStatic 2 }

dot1qStaticMulticastEntry OBJECT-TYPE
SYNTAX Dot1qStaticMulticastEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Filtering information configured into the device by
(local or network) management specifying the set of
ports to which frames received from this specific port
for this VLAN and containing this Multicast or Broadcast
destination address are allowed to be forwarded."
INDEX {
dot1qVlanIndex,
dot1qStaticMulticastAddress,
dot1qStaticMulticastReceivePort
}
::= { dot1qStaticMulticastTable 1 }

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RFC 2674 Bridge MIB Extensions August 1999

Dot1qStaticMulticastEntry ::=
SEQUENCE {
dot1qStaticMulticastAddress
MacAddress,
dot1qStaticMulticastReceivePort
INTEGER,
dot1qStaticMulticastStaticEgressPorts
PortList,
dot1qStaticMulticastForbiddenEgressPorts
PortList,
dot1qStaticMulticastStatus
INTEGER
}

dot1qStaticMulticastAddress OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The destination MAC address in a frame to which this
entry's filtering information applies. This object must
take the value of a Multicast or Broadcast address."
::= { dot1qStaticMulticastEntry 1 }

dot1qStaticMulticastReceivePort OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Either the value '0', or the port number of the port
from which a frame must be received in order for this
entry's filtering information to apply. A value of zero
indicates that this entry applies on all ports of the
device for which there is no other applicable entry."
::= { dot1qStaticMulticastEntry 2 }

dot1qStaticMulticastStaticEgressPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-write
STATUS current

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RFC 2674 Bridge MIB Extensions August 1999

DESCRIPTION
"The set of ports to which frames received from a
specific port and destined for a specific Multicast or
Broadcast MAC address must be forwarded, regardless of
any dynamic information e.g. from GMRP. A port may not
be added in this set if it is already a member of the
set of ports in dot1qStaticMulticastForbiddenEgressPorts.
The default value of this object is a string of ones of
appropriate length."
::= { dot1qStaticMulticastEntry 3 }

dot1qStaticMulticastForbiddenEgressPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The set of ports to which frames received from a
specific port and destined for a specific Multicast or
Broadcast MAC address must not be forwarded, regardless
of any dynamic information e.g. from GMRP. A port may
not be added in this set if it is already a member of the
set of ports in dot1qStaticMulticastStaticEgressPorts.
The default value of this object is a string of zeros of
appropriate length."
::= { dot1qStaticMulticastEntry 4 }

dot1qStaticMulticastStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1),
invalid(2),
permanent(3),
deleteOnReset(4),
deleteOnTimeout(5)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object indicates the status of this entry.
other(1) - this entry is currently in use but
the conditions under which it will remain
so differ from the following values.
invalid(2) - writing this value to the object
removes the corresponding entry.
permanent(3) - this entry is currently in use
and will remain so after the next reset of
the bridge.

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deleteOnReset(4) - this entry is currently in
use and will remain so until the next
reset of the bridge.
deleteOnTimeout(5) - this entry is currently in
use and will remain so until it is aged out."
DEFVAL { permanent }
::= { dot1qStaticMulticastEntry 5 }

-- -------------------------------------------------------------
-- The Current VLAN Database
-- -------------------------------------------------------------

dot1qVlanNumDeletes OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times a VLAN entry has been deleted from
the dot1qVlanCurrentTable (for any reason). If an entry
is deleted, then inserted, and then deleted, this
counter will be incremented by 2."
::= { dot1qVlan 1 }

dot1qVlanCurrentTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qVlanCurrentEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing current configuration information
for each VLAN currently configured into the device by
(local or network) management, or dynamically created
as a result of GVRP requests received."
::= { dot1qVlan 2 }

dot1qVlanCurrentEntry OBJECT-TYPE
SYNTAX Dot1qVlanCurrentEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information for a VLAN configured into the device by
(local or network) management, or dynamically created
as a result of GVRP requests received."
INDEX { dot1qVlanTimeMark, dot1qVlanIndex }
::= { dot1qVlanCurrentTable 1 }

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Dot1qVlanCurrentEntry ::=
SEQUENCE {
dot1qVlanTimeMark
TimeFilter,
dot1qVlanIndex
VlanIndex,
dot1qVlanFdbId
Unsigned32,
dot1qVlanCurrentEgressPorts
PortList,
dot1qVlanCurrentUntaggedPorts
PortList,
dot1qVlanStatus
INTEGER,
dot1qVlanCreationTime
TimeTicks
}

dot1qVlanTimeMark OBJECT-TYPE
SYNTAX TimeFilter
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A TimeFilter for this entry. See the TimeFilter
textual convention to see how this works."
::= { dot1qVlanCurrentEntry 1 }

dot1qVlanIndex OBJECT-TYPE
SYNTAX VlanIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The VLAN-ID or other identifier refering to this VLAN."
::= { dot1qVlanCurrentEntry 2 }

dot1qVlanFdbId OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Filtering Database used by this VLAN. This is one
of the dot1qFdbId values in the dot1qFdbTable. This
value is allocated automatically by the device whenever
the VLAN is created: either dynamically by GVRP, or by

Bell, et al. Standards Track [Page 59]

RFC 2674 Bridge MIB Extensions August 1999

management, in dot1qVlanStaticTable. Allocation of this
value follows the learning constraints defined for this
VLAN in dot1qLearningConstraintsTable."
::= { dot1qVlanCurrentEntry 3 }

dot1qVlanCurrentEgressPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The set of ports which are transmitting traffic for
this VLAN as either tagged or untagged frames."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.2.1"
::= { dot1qVlanCurrentEntry 4 }

dot1qVlanCurrentUntaggedPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The set of ports which are transmitting traffic for
this VLAN as untagged frames."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.2.1"
::= { dot1qVlanCurrentEntry 5 }

dot1qVlanStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1),
permanent(2),
dynamicGvrp(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object indicates the status of this entry.
other(1) - this entry is currently in use but the
conditions under which it will remain so differ
from the following values.
permanent(2) - this entry, corresponding to an entry
in dot1qVlanStaticTable, is currently in use and
will remain so after the next reset of the
device. The port lists for this entry include
ports from the equivalent dot1qVlanStaticTable
entry and ports learnt dynamically.
dynamicGvrp(3) - this entry is currently in use

Bell, et al. Standards Track [Page 60]

RFC 2674 Bridge MIB Extensions August 1999

and will remain so until removed by GVRP. There
is no static entry for this VLAN and it will be
removed when the last port leaves the VLAN."
::= { dot1qVlanCurrentEntry 6 }

dot1qVlanCreationTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when this VLAN was created."
::= { dot1qVlanCurrentEntry 7 }

-- -------------------------------------------------------------
-- The Static VLAN Database
-- -------------------------------------------------------------

dot1qVlanStaticTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qVlanStaticEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing static configuration information for
each VLAN configured into the device by (local or
network) management. All entries are permanent and will
be restored after the device is reset."
::= { dot1qVlan 3 }

dot1qVlanStaticEntry OBJECT-TYPE
SYNTAX Dot1qVlanStaticEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Static information for a VLAN configured into the
device by (local or network) management."
INDEX { dot1qVlanIndex }
::= { dot1qVlanStaticTable 1 }

Dot1qVlanStaticEntry ::=
SEQUENCE {
dot1qVlanStaticName
SnmpAdminString,
dot1qVlanStaticEgressPorts
PortList,
dot1qVlanForbiddenEgressPorts
PortList,

Bell, et al. Standards Track [Page 61]

RFC 2674 Bridge MIB Extensions August 1999

dot1qVlanStaticUntaggedPorts
PortList,
dot1qVlanStaticRowStatus
RowStatus
}

dot1qVlanStaticName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..32))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"An administratively assigned string, which may be used
to identify the VLAN."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.2.1"
::= { dot1qVlanStaticEntry 1 }

dot1qVlanStaticEgressPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The set of ports which are permanently assigned to the
egress list for this VLAN by management. Changes to a
bit in this object affect the per-port per-VLAN
Registrar control for Registration Fixed for the
relevant GVRP state machine on each port. A port may
not be added in this set if it is already a member of
the set of ports in dot1qVlanForbiddenEgressPorts. The
default value of this object is a string of zeros of
appropriate length, indicating not fixed."
REFERENCE
"IEEE 802.1Q/D11 Section 12.7.7.3, 11.2.3.2.3"
::= { dot1qVlanStaticEntry 2 }

dot1qVlanForbiddenEgressPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The set of ports which are prohibited by management
from being included in the egress list for this VLAN.
Changes to this object that cause a port to be included
or excluded affect the per-port per-VLAN Registrar

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RFC 2674 Bridge MIB Extensions August 1999

control for Registration Forbidden for the relevant GVRP
state machine on each port. A port may not be added in
this set if it is already a member of the set of ports
in dot1qVlanStaticEgressPorts. The default value of
this object is a string of zeros of appropriate length,
excluding all ports from the forbidden set."
REFERENCE
"IEEE 802.1Q/D11 Section 12.7.7.3, 11.2.3.2.3"
::= { dot1qVlanStaticEntry 3 }

dot1qVlanStaticUntaggedPorts OBJECT-TYPE
SYNTAX PortList
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The set of ports which should transmit egress packets
for this VLAN as untagged. The default value of this
object for the default VLAN (dot1qVlanIndex = 1) is a string
of appropriate length including all ports. There is no
specified default for other VLANs. If a device agent cannot
support the set of ports being set then it will reject the
set operation with an error. An example might be if a
manager attempts to set more than one VLAN to be untagged
on egress where the device does not support this IEEE 802.1Q
option."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.2.1"
::= { dot1qVlanStaticEntry 4 }

dot1qVlanStaticRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object indicates the status of this entry."
::= { dot1qVlanStaticEntry 5 }

dot1qNextFreeLocalVlanIndex OBJECT-TYPE
SYNTAX INTEGER (0|4096..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The next available value for dot1qVlanIndex of a local
VLAN entry in dot1qVlanStaticTable. This will report
values >=4096 if a new Local VLAN may be created or else
the value 0 if this is not possible.

Bell, et al. Standards Track [Page 63]

RFC 2674 Bridge MIB Extensions August 1999

A row creation operation in this table for an entry with a local
VlanIndex value may fail if the current value of this object
is not used as the index. Even if the value read is used,
there is no guarantee that it will still be the valid index
when the create operation is attempted - another manager may
have already got in during the intervening time interval.
In this case, dot1qNextFreeLocalVlanIndex should be re-read
and the creation re-tried with the new value.

This value will automatically change when the current value is
used to create a new row."
::= { dot1qVlan 4 }

-- -------------------------------------------------------------
-- The VLAN Port Configuration Table
-- -------------------------------------------------------------

dot1qPortVlanTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qPortVlanEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing per port control and status
information for VLAN configuration in the device."
::= { dot1qVlan 5 }

dot1qPortVlanEntry OBJECT-TYPE
SYNTAX Dot1qPortVlanEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information controlling VLAN configuration for a port
on the device. This is indexed by dot1dBasePort."
AUGMENTS { dot1dBasePortEntry }
::= { dot1qPortVlanTable 1 }

Dot1qPortVlanEntry ::=
SEQUENCE {
dot1qPvid
VlanIndex,
dot1qPortAcceptableFrameTypes
INTEGER,
dot1qPortIngressFiltering
TruthValue,
dot1qPortGvrpStatus
EnabledStatus,

Bell, et al. Standards Track [Page 64]

RFC 2674 Bridge MIB Extensions August 1999

dot1qPortGvrpFailedRegistrations
Counter32,
dot1qPortGvrpLastPduOrigin
MacAddress
}

dot1qPvid OBJECT-TYPE
SYNTAX VlanIndex
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The PVID, the VLAN ID assigned to untagged frames or
Priority-Tagged frames received on this port."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.1.1"
DEFVAL { 1 }
::= { dot1qPortVlanEntry 1 }

dot1qPortAcceptableFrameTypes OBJECT-TYPE
SYNTAX INTEGER {
admitAll(1),
admitOnlyVlanTagged(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"When this is admitOnlyVlanTagged(2) the device will
discard untagged frames or Priority-Tagged frames
received on this port. When admitAll(1), untagged
frames or Priority-Tagged frames received on this port
will be accepted and assigned to the PVID for this port.

This control does not affect VLAN independent BPDU
frames, such as GVRP and STP. It does affect VLAN
dependent BPDU frames, such as GMRP."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.1.3"
DEFVAL { admitAll }
::= { dot1qPortVlanEntry 2 }

dot1qPortIngressFiltering OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current

Bell, et al. Standards Track [Page 65]

RFC 2674 Bridge MIB Extensions August 1999

DESCRIPTION
"When this is true(1) the device will discard incoming
frames for VLANs which do not include this Port in its
Member set. When false(2), the port will accept all
incoming frames.

This control does not affect VLAN independent BPDU
frames, such as GVRP and STP. It does affect VLAN
dependent BPDU frames, such as GMRP."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.1.4"
DEFVAL { false }
::= { dot1qPortVlanEntry 3 }

dot1qPortGvrpStatus OBJECT-TYPE
SYNTAX EnabledStatus
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The state of GVRP operation on this port. The value
enabled(1) indicates that GVRP is enabled on this port,
as long as dot1qGvrpStatus is also enabled for this
device. When disabled(2) but dot1qGvrpStatus is still
enabled for the device, GVRP is disabled on this port:
any GVRP packets received will be silently discarded and
no GVRP registrations will be propagated from other
ports. This object affects all GVRP Applicant and
Registrar state machines on this port. A transition
from disabled(2) to enabled(1) will cause a reset of all
GVRP state machines on this port."
DEFVAL { enabled }
::= { dot1qPortVlanEntry 4 }

dot1qPortGvrpFailedRegistrations OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of failed GVRP registrations, for any
reason, on this port."
::= { dot1qPortVlanEntry 5 }

dot1qPortGvrpLastPduOrigin OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS read-only
STATUS current

Bell, et al. Standards Track [Page 66]

RFC 2674 Bridge MIB Extensions August 1999

DESCRIPTION
"The Source MAC Address of the last GVRP message
received on this port."
::= { dot1qPortVlanEntry 6 }

-- -------------------------------------------------------------
-- Per port VLAN Statistics Table
-- -------------------------------------------------------------

dot1qPortVlanStatisticsTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qPortVlanStatisticsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing per-port, per-VLAN statistics for
traffic received. Separate objects are provided for both the
most-significant and least-significant bits of statistics
counters for ports that are associated with this transparent
bridge. The most-significant bit objects are only required on
high capacity interfaces, as defined in the conformance clauses
for these objects. This mechanism is provided as a way to read
64-bit counters for agents which support only SNMPv1.

Note that the reporting of most-significant and least-
significant counter bits separately runs the risk of missing
an overflow of the lower bits in the interval between sampling.
The manager must be aware of this possibility, even within the
same varbindlist, when interpreting the results of a request or
asynchronous notification."
::= { dot1qVlan 6 }

dot1qPortVlanStatisticsEntry OBJECT-TYPE
SYNTAX Dot1qPortVlanStatisticsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Traffic statistics for a VLAN on an interface."
INDEX { dot1dBasePort, dot1qVlanIndex }
::= { dot1qPortVlanStatisticsTable 1 }

Dot1qPortVlanStatisticsEntry ::=
SEQUENCE {

Bell, et al. Standards Track [Page 67]

RFC 2674 Bridge MIB Extensions August 1999

dot1qTpVlanPortInFrames
Counter32,
dot1qTpVlanPortOutFrames
Counter32,
dot1qTpVlanPortInDiscards
Counter32,
dot1qTpVlanPortInOverflowFrames
Counter32,
dot1qTpVlanPortOutOverflowFrames
Counter32,
dot1qTpVlanPortInOverflowDiscards
Counter32
}

dot1qTpVlanPortInFrames OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of valid frames received by this port from
its segment which were classified as belonging to this
VLAN. Note that a frame received on this port is
counted by this object if and only if it is for a
protocol being processed by the local forwarding process
for this VLAN. This object includes received bridge
management frames classified as belonging to this VLAN
(e.g. GMRP, but not GVRP or STP)."
REFERENCE
"IEEE 802.1Q/D11 Section 12.6.1.1.3(a)"
::= { dot1qPortVlanStatisticsEntry 1 }

dot1qTpVlanPortOutFrames OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of valid frames transmitted by this port to
its segment from the local forwarding process for this
VLAN. This includes bridge management frames originated
by this device which are classified as belonging to this
VLAN (e.g. GMRP, but not GVRP or STP)."
REFERENCE
"IEEE 802.1Q/D11 Section 12.6.1.1.3(d)"
::= { dot1qPortVlanStatisticsEntry 2 }

Bell, et al. Standards Track [Page 68]

RFC 2674 Bridge MIB Extensions August 1999

dot1qTpVlanPortInDiscards OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of valid frames received by this port from
its segment which were classified as belonging to this
VLAN which were discarded due to VLAN related reasons.
Specifically, the IEEE 802.1Q counters for Discard
Inbound and Discard on Ingress Filtering."
REFERENCE
"IEEE 802.1Q/D11 Section 12.6.1.1.3"
::= { dot1qPortVlanStatisticsEntry 3 }

dot1qTpVlanPortInOverflowFrames OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated
dot1qTpVlanPortInFrames counter has overflowed."
REFERENCE
"ISO/IEC 15802-3 Section 14.6.1.1.3"
::= { dot1qPortVlanStatisticsEntry 4 }

dot1qTpVlanPortOutOverflowFrames OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated
dot1qTpVlanPortOutFrames counter has overflowed."
REFERENCE
"ISO/IEC 15802-3 Section 14.6.1.1.3"
::= { dot1qPortVlanStatisticsEntry 5 }

dot1qTpVlanPortInOverflowDiscards OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated
dot1qTpVlanPortInDiscards counter has overflowed."
REFERENCE
"ISO/IEC 15802-3 Section 14.6.1.1.3"
::= { dot1qPortVlanStatisticsEntry 6 }

Bell, et al. Standards Track [Page 69]

RFC 2674 Bridge MIB Extensions August 1999

dot1qPortVlanHCStatisticsTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qPortVlanHCStatisticsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing per port, per VLAN statistics for
traffic on high capacity interfaces."
::= { dot1qVlan 7 }

dot1qPortVlanHCStatisticsEntry OBJECT-TYPE
SYNTAX Dot1qPortVlanHCStatisticsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Traffic statistics for a VLAN on a high capacity
interface."
INDEX { dot1dBasePort, dot1qVlanIndex }
::= { dot1qPortVlanHCStatisticsTable 1 }

Dot1qPortVlanHCStatisticsEntry ::=
SEQUENCE {
dot1qTpVlanPortHCInFrames
Counter64,
dot1qTpVlanPortHCOutFrames
Counter64,
dot1qTpVlanPortHCInDiscards
Counter64
}

dot1qTpVlanPortHCInFrames OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of valid frames received by this port from
its segment which were classified as belonging to this
VLAN. Note that a frame received on this port is
counted by this object if and only if it is for a
protocol being processed by the local forwarding process
for this VLAN. This object includes received bridge
management frames classified as belonging to this VLAN
(e.g. GMRP, but not GVRP or STP)."
REFERENCE
"IEEE 802.1Q/D11 Section 12.6.1.1.3(a)"
::= { dot1qPortVlanHCStatisticsEntry 1 }

Bell, et al. Standards Track [Page 70]

RFC 2674 Bridge MIB Extensions August 1999

dot1qTpVlanPortHCOutFrames OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of valid frames transmitted by this port to
its segment from the local forwarding process for this
VLAN. This includes bridge management frames originated
by this device which are classified as belonging to this
VLAN (e.g. GMRP, but not GVRP or STP)."
REFERENCE
"IEEE 802.1Q/D11 Section 12.6.1.1.3(d)"
::= { dot1qPortVlanHCStatisticsEntry 2 }

dot1qTpVlanPortHCInDiscards OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of valid frames received by this port from
its segment which were classified as belonging to this
VLAN which were discarded due to VLAN related reasons.
Specifically, the IEEE 802.1Q counters for Discard
Inbound and Discard on Ingress Filtering."
REFERENCE
"IEEE 802.1Q/D11 Section 12.6.1.1.3"
::= { dot1qPortVlanHCStatisticsEntry 3 }

-- -------------------------------------------------------------
-- The VLAN Learning Constraints Table
-- -------------------------------------------------------------

dot1qLearningConstraintsTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1qLearningConstraintsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing learning constraints for sets of
Shared and Independendent VLANs."
REFERENCE
"IEEE 802.1Q/D11 Section 12.10.3.1"
::= { dot1qVlan 8 }

dot1qLearningConstraintsEntry OBJECT-TYPE
SYNTAX Dot1qLearningConstraintsEntry
MAX-ACCESS not-accessible
STATUS current

Bell, et al. Standards Track [Page 71]

RFC 2674 Bridge MIB Extensions August 1999

DESCRIPTION
"A learning constraint defined for a VLAN."
INDEX { dot1qConstraintVlan, dot1qConstraintSet }
::= { dot1qLearningConstraintsTable 1 }

Dot1qLearningConstraintsEntry ::=
SEQUENCE {
dot1qConstraintVlan
VlanIndex,
dot1qConstraintSet
INTEGER,
dot1qConstraintType
INTEGER,
dot1qConstraintStatus
RowStatus
}

dot1qConstraintVlan OBJECT-TYPE
SYNTAX VlanIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The index of the row in dot1qVlanCurrentTable for the
VLAN constrained by this entry."
::= { dot1qLearningConstraintsEntry 1 }

dot1qConstraintSet OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The identity of the constraint set to which
dot1qConstraintVlan belongs. These values may be chosen
by the management station."
::= { dot1qLearningConstraintsEntry 2 }

dot1qConstraintType OBJECT-TYPE
SYNTAX INTEGER {
independent(1),
shared(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of constraint this entry defines.
independent(1) - the VLAN, dot1qConstraintVlan,
uses an independent filtering database from all

Bell, et al. Standards Track [Page 72]

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other VLANs in the same set, defined by
dot1qConstraintSet.
shared(2) - the VLAN, dot1qConstraintVlan, shares
the same filtering database as all other VLANs
in the same set, defined by dot1qConstraintSet."
::= { dot1qLearningConstraintsEntry 3 }

dot1qConstraintStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this entry."
::= { dot1qLearningConstraintsEntry 4 }

dot1qConstraintSetDefault OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The identity of the constraint set to which a VLAN
belongs, if there is not an explicit entry for that VLAN
in dot1qLearningConstraintsTable."
::= { dot1qVlan 9 }

dot1qConstraintTypeDefault OBJECT-TYPE
SYNTAX INTEGER {
independent(1),
shared(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The type of constraint set to which a VLAN belongs, if
there is not an explicit entry for that VLAN in
dot1qLearningConstraintsTable. The types are as defined
for dot1qConstraintType."
::= { dot1qVlan 10 }

Bell, et al. Standards Track [Page 73]

RFC 2674 Bridge MIB Extensions August 1999

-- -------------------------------------------------------------
-- IEEE 802.1Q MIB - Conformance Information
-- -------------------------------------------------------------

qBridgeConformance OBJECT IDENTIFIER ::= { qBridgeMIB 2 }

qBridgeGroups OBJECT IDENTIFIER ::= { qBridgeConformance 1 }

qBridgeCompliances OBJECT IDENTIFIER
::= { qBridgeConformance 2 }

-- -------------------------------------------------------------
-- units of conformance
-- -------------------------------------------------------------

qBridgeBaseGroup OBJECT-GROUP
OBJECTS {
dot1qVlanVersionNumber,
dot1qMaxVlanId,
dot1qMaxSupportedVlans,
dot1qNumVlans,
dot1qGvrpStatus
}
STATUS current
DESCRIPTION
"A collection of objects providing device level control
and status information for the Virtual LAN bridge
services."
::= { qBridgeGroups 1 }

qBridgeFdbUnicastGroup OBJECT-GROUP
OBJECTS {
dot1qFdbDynamicCount,
dot1qTpFdbPort,
dot1qTpFdbStatus
}
STATUS current
DESCRIPTION
"A collection of objects providing information about all
unicast addresses, learnt dynamically or statically
configured by management, in each Filtering Database."
::= { qBridgeGroups 2 }

qBridgeFdbMulticastGroup OBJECT-GROUP
OBJECTS {
dot1qTpGroupEgressPorts,
dot1qTpGroupLearnt
}

Bell, et al. Standards Track [Page 74]

RFC 2674 Bridge MIB Extensions August 1999

STATUS current
DESCRIPTION
"A collection of objects providing information about all
multicast addresses, learnt dynamically or statically
configured by management, in each Filtering Database."
::= { qBridgeGroups 3 }

qBridgeServiceRequirementsGroup OBJECT-GROUP
OBJECTS {
dot1qForwardAllPorts,
dot1qForwardAllStaticPorts,
dot1qForwardAllForbiddenPorts,
dot1qForwardUnregisteredPorts,
dot1qForwardUnregisteredStaticPorts,
dot1qForwardUnregisteredForbiddenPorts
}
STATUS current
DESCRIPTION
"A collection of objects providing information about
service requirements, learnt dynamically or statically
configured by management, in each Filtering Database."
::= { qBridgeGroups 4 }

qBridgeFdbStaticGroup OBJECT-GROUP
OBJECTS {
dot1qStaticUnicastAllowedToGoTo,
dot1qStaticUnicastStatus,
dot1qStaticMulticastStaticEgressPorts,
dot1qStaticMulticastForbiddenEgressPorts,
dot1qStaticMulticastStatus
}
STATUS current
DESCRIPTION
"A collection of objects providing information about
unicast and multicast addresses statically configured by
management, in each Filtering Database or VLAN."
::= { qBridgeGroups 5 }

qBridgeVlanGroup OBJECT-GROUP
OBJECTS {
dot1qVlanNumDeletes,
dot1qVlanFdbId,
dot1qVlanCurrentEgressPorts,
dot1qVlanCurrentUntaggedPorts,
dot1qVlanStatus,
dot1qVlanCreationTime
}

Bell, et al. Standards Track [Page 75]

RFC 2674 Bridge MIB Extensions August 1999

STATUS current
DESCRIPTION
"A collection of objects providing information about
all VLANs currently configured on this device."
::= { qBridgeGroups 6 }

qBridgeVlanStaticGroup OBJECT-GROUP
OBJECTS {
dot1qVlanStaticName,
dot1qVlanStaticEgressPorts,
dot1qVlanForbiddenEgressPorts,
dot1qVlanStaticUntaggedPorts,
dot1qVlanStaticRowStatus,
dot1qNextFreeLocalVlanIndex
}
STATUS current
DESCRIPTION
"A collection of objects providing information about
VLANs statically configured by management."
::= { qBridgeGroups 7 }

qBridgePortGroup OBJECT-GROUP
OBJECTS {
dot1qPvid,
dot1qPortAcceptableFrameTypes,
dot1qPortIngressFiltering,
dot1qPortGvrpStatus,
dot1qPortGvrpFailedRegistrations,
dot1qPortGvrpLastPduOrigin
}
STATUS current
DESCRIPTION
"A collection of objects providing port level VLAN
control and status information for all ports."
::= { qBridgeGroups 8 }

qBridgeVlanStatisticsGroup OBJECT-GROUP
OBJECTS {
dot1qTpVlanPortInFrames,
dot1qTpVlanPortOutFrames,
dot1qTpVlanPortInDiscards
}
STATUS current
DESCRIPTION
"A collection of objects providing per-port packet
statistics for all VLANs currently configured on this
device."
::= { qBridgeGroups 9 }

Bell, et al. Standards Track [Page 76]

RFC 2674 Bridge MIB Extensions August 1999

qBridgeVlanStatisticsOverflowGroup OBJECT-GROUP
OBJECTS {
dot1qTpVlanPortInOverflowFrames,
dot1qTpVlanPortOutOverflowFrames,
dot1qTpVlanPortInOverflowDiscards
}
STATUS current
DESCRIPTION
"A collection of objects providing overflow counters for
per-port packet statistics for all VLANs currently configured
on this device for high capacity interfaces, defined as those
that have the value of the corresponding instance of
ifSpeed greater than 650,000,000 bits/second."
::= { qBridgeGroups 10 }

qBridgeVlanHCStatisticsGroup OBJECT-GROUP
OBJECTS {
dot1qTpVlanPortHCInFrames,
dot1qTpVlanPortHCOutFrames,
dot1qTpVlanPortHCInDiscards
}
STATUS current
DESCRIPTION
"A collection of objects providing per-port packet
statistics for all VLANs currently configured on this
device for high capacity interfaces, defined as those
that have the value of the corresponding instance of
ifSpeed greater than 650,000,000 bits/second."
::= { qBridgeGroups 11 }

qBridgeLearningConstraintsGroup OBJECT-GROUP
OBJECTS {
dot1qConstraintType,
dot1qConstraintStatus
}
STATUS current
DESCRIPTION
"A collection of objects defining the Filtering Database
constraints all VLANs have with each other."
::= { qBridgeGroups 12 }

qBridgeLearningConstraintDefaultGroup OBJECT-GROUP
OBJECTS {
dot1qConstraintSetDefault,
dot1qConstraintTypeDefault
}

Bell, et al. Standards Track [Page 77]

RFC 2674 Bridge MIB Extensions August 1999

STATUS current
DESCRIPTION
"A collection of objects defining the default Filtering
Database constraints for VLANs which have no specific
constraints defined."
::= { qBridgeGroups 13 }

-- -------------------------------------------------------------
-- compliance statements
-- -------------------------------------------------------------

qBridgeCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for device support of Virtual
LAN Bridge services."

MODULE
MANDATORY-GROUPS {
qBridgeBaseGroup,
qBridgeVlanGroup,
qBridgeVlanStaticGroup,
qBridgePortGroup
}

GROUP qBridgeFdbUnicastGroup
DESCRIPTION
"This group is mandatory for bridges that implement
802.1Q transparent bridging."

GROUP qBridgeFdbMulticastGroup
DESCRIPTION
"This group is mandatory for bridges that implement
802.1Q transparent bridging."

GROUP qBridgeServiceRequirementsGroup
DESCRIPTION
"This group is mandatory for bridges that implement
extended filtering services. All objects must be
read-write if extended-filtering services are
enabled."

GROUP qBridgeFdbStaticGroup
DESCRIPTION
"This group is optional."

Bell, et al. Standards Track [Page 78]

RFC 2674 Bridge MIB Extensions August 1999

GROUP qBridgeVlanStatisticsGroup
DESCRIPTION
"This group is optional as there may be significant
implementation cost associated with its support."

GROUP qBridgeVlanStatisticsOverflowGroup
DESCRIPTION
"This group is optional as there may be significant
implementation cost associated with its support. It is most
relevant for high capacity interfaces where the SNMP agent
supports only SNMPv1."

GROUP qBridgeVlanHCStatisticsGroup
DESCRIPTION
"This group is optional as there may be significant
implementation cost associated with its support. It is most
relevant for high capacity interfaces."

GROUP qBridgeLearningConstraintsGroup
DESCRIPTION
"This group is mandatory for devices implementing
both Independent VLAN Learning (IVL) and Shared
VLAN Learning (SVL) modes of operation of the
filtering database, as defined by IEEE 802.1Q."

GROUP qBridgeLearningConstraintDefaultGroup
DESCRIPTION
"This group is mandatory for devices implementing
both Independent VLAN Learning (IVL) and Shared
VLAN Learning (SVL) modes of operation of the
filtering database, as defined by IEEE 802.1Q."

OBJECT dot1qPortAcceptableFrameTypes
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required as this is an optional
capability in IEEE 802.1Q."

OBJECT dot1qPortIngressFiltering
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required as this is an optional
capability in IEEE 802.1Q."

Bell, et al. Standards Track [Page 79]

RFC 2674 Bridge MIB Extensions August 1999

OBJECT dot1qConstraintSetDefault
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required as this is an optional
capability in IEEE 802.1Q."

OBJECT dot1qConstraintTypeDefault
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required as this is an optional
capability in IEEE 802.1Q."

::= { qBridgeCompliances 1 }

END

6. Acknowledgments

This document expands upon previous work which resulted in the
original bridge MIB [BRIDGEMIB].

Much of the groundwork for this document was performed by the IEEE
802.1 working group during the definition of the IEEE 802.1D updates
[802.1D] and IEEE 802.1Q [802.1Q].

The authors wish to thank the members of the Bridge Working Group and
David Harrington in particular for their many comments and
suggestions which improved this effort.

7. Security Considerations

There are a number of management objects defined in this MIB that
have a MAX-ACCESS clause of read-write and/or read-create. Such
objects may be considered sensitive or vulnerable in some network
environments. The support for SET operations in a non-secure
environment without proper protection can have a negative effect on
network operations.

SNMPv1 by itself is not a secure environment. Even if the network
itself is secure (for example by using IPSec), even then, there is no
control as to who on the secure network is allowed to access and
GET/SET (read/change/create/delete) the objects in this MIB.

It is recommended that the implementers consider the security
features as provided by the SNMPv3 framework. Specifically, the use
of the User-based Security Model [USM] and the View-based Access
Control Model [VACM] is recommended.

Bell, et al. Standards Track [Page 80]

RFC 2674 Bridge MIB Extensions August 1999

It is then a customer/user responsibility to ensure that the SNMP
entity giving access to an instance of this MIB, is properly
configured to give access to the objects only to those principals
(users) that have legitimate rights to indeed GET or SET
(change/create/delete) them.

8. References

[ARCH]
Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for
Describing SNMP Management Frameworks", RFC 2571, April 1999.

[V1PROTO]
Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
Network Management Protocol", STD 15, RFC 1157, May 1990.

[V1SMI]
Rose, M. and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based Internets", STD 16, RFC
1155, May 1990.

[V1CONCISE]
Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16,
RFC 1212, March 1991.

[V1TRAPS]
Rose, M., "A Convention for Defining Traps for use with the
SNMP", RFC 1215, March 1991.

[V2SMI]
McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Structure of Management Information
Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

[V2TC]
McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Textual Conventions for SMIv2", STD 58,
RFC 2579, April 1999.

[V2CONFORM]
McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Conformance Statements for SMIv2", STD
58, RFC 2580, April 1999.

[V2COMMUNITY]
Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
"Introduction to Community-based SNMPv2", RFC 1901, January
1996.

Bell, et al. Standards Track [Page 81]

RFC 2674 Bridge MIB Extensions August 1999

[V2TRANS]
Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Transport
Mappings for Version 2 of the Simple Network Management Protocol
(SNMPv2)", RFC 1906, January 1996.

[V2PROTO]
Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol
Operations for Version 2 of the Simple Network Management
Protocol (SNMPv2)", RFC 1905, January 1996.

[V3INTRO]
Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction
to Version 3 of the Internet-standard Network Management
Framework", RFC 2570, April 1999.

[V3MPC]
Case, J., Harrington D., Presuhn, R. and B. Wijnen, "Message
Processing and Dispatching for the Simple Network Management
Protocol (SNMP)", RFC 2572, April 1999.

[V3USM]
Blumenthal, U. and B. Wijnen, "The User-Based Security Model
(USM) for Version 3 of the Simple Network Management Protocol
(SNMPv3)", RFC 2574, April 1999.

[V3APPS]
Levi, D., Meyer, P. and B. Stewart, "SNMP Applications", RFC
2573, April 1999.

[V3VACM]
Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access
Control Model for the Simple Network Management Protocol
(SNMP)", RFC 2575, April 1999.

[ASN1]
Information processing systems - Open Systems Interconnection -
Specification of Abstract Syntax Notation One (ASN.1),
International Organization for Standardization, International
Standard 8824, December 1987.

[ASN1BER]
Information processing systems - Open Systems Interconnection -
Specification of Basic Encoding Rules for Abstract Notation One
(ASN.1), International Organization for Standardization,
International Standard 8825, December 1987.

[802.1D-ORIG]
ISO/IEC 10038, ANSI/IEEE Std 802.1D-1993 "MAC Bridges".

Bell, et al. Standards Track [Page 82]

RFC 2674 Bridge MIB Extensions August 1999

[802.1D]
"Information technology - Telecommunications and information
exchange between systems - Local and metropolitan area networks
- Common specifications - Part 3: Media Access Control (MAC)
Bridges: Revision. This is a revision of ISO/IEC 10038: 1993,
802.1j-1992 and 802.6k-1992. It incorporates P802.11c, P802.1p
and P802.12e." ISO/IEC 15802-3: 1998.

[802.1Q]
ANSI/IEEE Standard 802.1Q, "IEEE Standards for Local and
Metropolitan Area Networks: Virtual Bridged Local Area
Networks", 1998.

[BRIDGEMIB]
Decker, E., Langille, P., Rijsinghani, A. and K. McCloghrie,
"Definitions of Managed Objects for Bridges", RFC 1493, July
1993.

[INTERFACEMIB]
McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB
using SMIv2", RFC 2233, November 1997.

[SRBRIDGEMIB]
Decker, E., McCloghrie, K., Langille, P. and A. Rijsinghani,
"Definitions of Managed Objects for Source Routing Bridges", RFC
1525, September 1993.

[MIB2]
McCloghrie K. and M. Rose, Editors, "Management Information Base
for Network Management of TCP/IP-based internets", STD 17, RFC
1213, March 1991.

Bell, et al. Standards Track [Page 83]

RFC 2674 Bridge MIB Extensions August 1999

9. Authors' Addresses

Les Bell
3Com Europe Limited
3Com Centre, Boundary Way
Hemel Hempstead
Herts. HP2 7YU
UK

Phone: +44 1442 438025
EMail: [email protected]

Andrew Smith
Extreme Networks
3585 Monroe St.
Santa Clara, CA 95051
USA

Phone: +1 408 579 2821
EMail: [email protected]

Paul Langille
Newbridge Networks
5 Corporate Drive
Andover, MA 01810
USA

Phone: +1 978 691 4665
EMail: [email protected]

Anil Rijhsinghani
Cabletron Systems
50 Minuteman Road
Andover, MA 01810
USA

Phone: +1 978 684 1295
EMail: [email protected]

Keith McCloghrie
cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA

Phone: +1 408 526 5260
EMail: [email protected]

Bell, et al. Standards Track [Page 84]

RFC 2674 Bridge MIB Extensions August 1999

10. Intellectual Property

The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; neither does it represent that it
has made any effort to identify any such rights. Information on the
IETF's procedures with respect to rights in standards-track and
standards-related documentation can be found in BCP-11. Copies of
claims of rights made available for publication and any assurances of
licenses to be made available, or the result of an attempt made to
obtain a general license or permission for the use of such
proprietary rights by implementors or users of this specification can
be obtained from the IETF Secretariat.

The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights which may cover technology that may be required to practice
this standard. Please address the information to the IETF Executive
Director.

Bell, et al. Standards Track [Page 85]

RFC 2674 Bridge MIB Extensions August 1999

11. Full Copyright Statement

Copyright (C) The Internet Society (1999). All Rights Reserved.

This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.

The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.

This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Acknowledgement

Funding for the RFC Editor function is currently provided by the
Internet Society.

Bell, et al. Standards Track [Page 86]