Network Working Group D. McMaster

Network Working Group D. McMaster
Request for Comments: 1515 SynOptics Communications, Inc.
K. McCloghrie
Hughes LAN Systems, Inc.
S. Roberts
Farallon Computing, Inc.
September 1993

Definitions of Managed Objects
for IEEE 802.3 Medium Attachment Units (MAUs)

Status of this Memo

This RFC 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" for the standardization state and status
of this protocol. Distribution of this memo is unlimited.

Abstract

This document defines a portion of the Management Information Base
(MIB) for use with network management protocols in TCP/IP-based
internets. In particular, it defines objects for managing IEEE 802.3
Medium Attachment Units (MAUs).

Table of Contents

1. The Network Management Framework ...................... 2
2. Objects ............................................... 2
3. Overview .............................................. 2
3.1 Terminology .......................................... 3
3.2 Structure of MIB ..................................... 3
3.2.1 The Repeater MAU Basic Group Definitions ........... 3
3.2.2 The Interface MAU Basic Group Definitions .......... 3
3.2.3 The Broadband MAU Basic Group Definitions .......... 3
3.3 Relationship to Other MIBs ........................... 3
3.3.1 Relationship to the 'system' group ................. 3
3.3.2 Relationship to the 'interfaces' group ............. 4
3.3.3 Relationship to the 802.3 Repeater MIB ............. 4
3.4 Management of Internal MAUs .......................... 4
4. Definitions ........................................... 5
4.1 Groups in the Repeater MAU MIB ....................... 5
4.1.1 The Repeater MAU Basic Group Definitions ........... 6
4.1.2 The Interface MAU Basic Group Definitions .......... 12
4.1.3 The Broadband MAU Basic Group Definitions .......... 18
4.2 Traps for use by 802.3 MAUs .......................... 20

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RFC 1515 802.3 MAU MIB September 1993

5. Acknowledgments ....................................... 21
6. References ............................................ 23
7. Security Considerations ............................... 24
8. Authors' Addresses .................................... 25

1. The Network Management Framework

The Internet-standard Network Management Framework consists of three
components. They are:

STD 16, RFC 1155 [1] which defines the SMI, the mechanisms used
for describing and naming objects for the purpose of management.
STD 16, RFC 1212 [7] defines a more concise description mechanism,
which is wholly consistent with the SMI.

STD 17, RFC 1213 [4] which defines MIB-II, the core set of managed
objects for the Internet suite of protocols.

STD 15, RFC 1157 [3] which defines the SNMP, the protocol used for
network access to managed objects.

The Framework permits new objects to be defined for the purpose of
experimentation and evaluation.

2. Object Definitions

Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. Objects in the MIB are
defined using the subset of Abstract Syntax Notation One (ASN.1)
defined in the SMI. In particular, each object object type is named
by an OBJECT IDENTIFIER, an administratively assigned name. The
object type together with an object instance serves to uniquely
identify a specific instantiation of the object. For human
convenience, we often use a textual string, termed the descriptor, to
refer to the object type.

3. Overview

Instances of the object types defined in this document represent
attributes of an IEEE 802.3 MAU. Several types of MAUs are defined
in the IEEE 802.3/ISO 8802-3 CSMA/CD standard [9].

These MAUs may be connected to IEEE 802.3 repeaters or to 802.3
(Ethernet-like) interfaces. For convenience this document refers to
these devices as "repeater MAUs" and "interface MAUs."

The definitions presented here are based on Draft 5 of Section 20 of
IEEE P802.3p, "Layer Management for 10 Mb/s Medium Attachment Units

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RFC 1515 802.3 MAU MIB September 1993

(MAUs), Section 20" [10] dated 11 July 1992.

3.1. Terminology

Refer to Section 3.1.2 of [13] for simple definitions of the terms
"repeater," "port," and "MAU" as used in the context of this
document. For a more complete and precise definition of these terms,
refer to Section 9 of [9].

3.2. Structure of MIB

Objects in this MIB are arranged into MIB groups. Each MIB group is
organized as a set of related objects.

3.2.1. The Repeater MAU Basic Group Definitions

This group contains all repeater MAU-related configuration, status,
and control objects. Implementation of the dot3RpMauBasicGroup is
mandatory for MAUs attached to repeaters.

3.2.2. The Interface MAU Basic Group Definitions

This group contains all interface MAU-related configuration, status,
and control objects. Implementation of the dot3IfMauBasicGroup is
mandatory for MAUs attached to interfaces.

3.2.3. The Broadband MAU Basic Group Definitions

This group contains all broadband-specific MAU-related configuration
objects. Implementation of the dot3BroadMauBasicGroup is mandatory
for 10BROAD36 MAUs, and is not appropriate for other types of MAUs.

3.3. Relationship to Other MIBs

It is assumed that an agent implementing this MIB will also implement
(at least) the 'system' group defined in MIB-II [4]. The following
sections identify other MIBs that such an agent should implement.

3.3.1. 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 even if the entity's sole functionality is management of a
MAU.

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RFC 1515 802.3 MAU MIB September 1993

3.3.2. Relationship to the 'interfaces' group

The sections of this document that define interface MAU-related
objects specify an extension to the 'interfaces' group of MIB-II [4].
An agent implementing these interface-MAU related objects must also
implement the 'interfaces' group of MIB-II. The value of the same as
the value of 'ifIndex' used to instantiate the interface to which the
given MAU is connected.

It is expected that an agent implementing the interface-MAU related
objects in this MIB will also implement the Ethernet-like Interfaces
MIB [11].

(Note that repeater ports are not represented as interfaces in the
sense of MIB-II's 'interfaces' group. See section 3.4.2 of the
repeater MIB [12] for more details.)

3.3.3. Relationship to the 802.3 Repeater MIB

The section of this document that defines repeater MAU-related
objects specifies an extension to the 802.3 Repeater MIB defined in
[13]. An agent implementing these repeater-MAU related objects must
also implement the 802.3 Repeater MIB.

The values of 'rpMauGroupIndex' and 'rpMauPortIndex' used to
instantiate a repeater MAU variable shall be the same as the values
of 'rptrPortGroupIndex' and 'rptrPortIndex' used to instantiate the
port to which the given MAU is connected.

3.4. Management of Internal MAUs

In some situations, a MAU can be "internal" -- i.e., its
functionality is implemented entirely within a device. For example,
a managed repeater may contain an internal repeater- MAU and/or an
internal interface-MAU through which management communications
originating on one of the repeater's external ports pass in order to
reach the management agent associated with the repeater. Such
internal MAUs may or may not be managed. If they are managed,
objects describing their attributes should appear in the appropriate
MIB group -- dot3RpMauBasicGroup for internal repeater-MAUs and
dot3IfMauBasicGroup for internal interface-MAUs.

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RFC 1515 802.3 MAU MIB September 1993

4. Definitions

MAU-MIB DEFINITIONS ::= BEGIN

IMPORTS
Counter FROM RFC1155-SMI
OBJECT-TYPE FROM RFC-1212
TRAP-TYPE FROM RFC-1215;

snmpDot3MauMgt OBJECT IDENTIFIER ::= { mib-2 26 }

-- References
--
-- The following references are used throughout this MIB:
--
-- [RFC 1213]
-- refers to McCloghrie, K., and M. Rose, Editors,
-- Management Information Base for Network Management
-- of TCP/IP-based internets: MIB-II, STD 17, RFC 1213,
-- Hughes LAN Systems, Performance Systems International,
-- March 1991.
--
-- [RFC 1368]
-- refers to McMaster, D., and K. McCloghrie, Editors,
-- Definitions of Managed Objects for IEEE 802.3 Repeater
-- Devices, RFC 1368, SynOptics Communications, Hughes
-- LAN Systems, October 1992.
--
-- [IEEE 802.3 MAU Mgt]
-- refers to IEEE P802.3p, 'Layer Management for 10 Mb/s
-- Medium Access Unit (MAUs), Section 20,' Draft Supplement
-- to ANSI/IEEE 802.3, Draft 5, 11 July 1992.

-- MIB Groups
--
-- The dot3RpMauBasicGroup is mandatory for MAUs attached to
-- repeaters.
-- The dot3IfMauBasicGroup is mandatory for MAUs attached to
-- DTEs (interfaces).
-- The dot3BroadMauBasicGroup is mandatory for broadband MAUs
-- attached to DTEs.

dot3RpMauBasicGroup

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RFC 1515 802.3 MAU MIB September 1993

OBJECT IDENTIFIER ::= { snmpDot3MauMgt 1 }
dot3IfMauBasicGroup
OBJECT IDENTIFIER ::= { snmpDot3MauMgt 2 }
dot3BroadMauBasicGroup
OBJECT IDENTIFIER ::= { snmpDot3MauMgt 3 }

-- object identifiers for MAU types
-- (see rpMauType and ifMauType for usage)
dot3MauType
OBJECT IDENTIFIER ::= { snmpDot3MauMgt 4 }
dot3MauTypeAUI -- no internal MAU, view from AUI
OBJECT IDENTIFIER ::= { dot3MauType 1 }
dot3MauType10Base5 -- thick coax MAU (per 802.3 section 8)
OBJECT IDENTIFIER ::= { dot3MauType 2 }
dot3MauTypeFoirl -- FOIRL MAU (per 802.3 section 9.9)
OBJECT IDENTIFIER ::= { dot3MauType 3 }
dot3MauType10Base2 -- thin coax MAU (per 802.3 section 10)
OBJECT IDENTIFIER ::= { dot3MauType 4 }
dot3MauType10BaseT -- UTP MAU (per 802.3 section 14)
OBJECT IDENTIFIER ::= { dot3MauType 5 }
dot3MauType10BaseFP -- passive fiber MAU (per 802.3 section 16)
OBJECT IDENTIFIER ::= { dot3MauType 6 }
dot3MauType10BaseFB -- sync fiber MAU (per 802.3 section 17)
OBJECT IDENTIFIER ::= { dot3MauType 7 }
dot3MauType10BaseFL -- async fiber MAU (per 802.3 section 18)
OBJECT IDENTIFIER ::= { dot3MauType 8 }
dot3MauType10Broad36 -- broadband DTE MAU (per 802.3 section 11)
-- note that 10BROAD36 MAUs can be attached to interfaces but
-- not to repeaters
OBJECT IDENTIFIER ::= { dot3MauType 9 }

--
-- The Repeater MAU Basic Group
--
-- Implementation of the Repeater MAU Basic Group is mandatory
-- for MAUs attached to repeaters.

--
-- The Basic Repeater MAU Table
--

rpMauTable OBJECT-TYPE
SYNTAX SEQUENCE OF RpMauEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION

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RFC 1515 802.3 MAU MIB September 1993

"Table of descriptive and status information about
the MAU(s) attached to the ports of a repeater."
::= { dot3RpMauBasicGroup 1 }

rpMauEntry OBJECT-TYPE
SYNTAX RpMauEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"An entry in the table, containing information
about a single MAU."
INDEX { rpMauGroupIndex, rpMauPortIndex, rpMauIndex }
::= { rpMauTable 1 }

RpMauEntry ::=
SEQUENCE {
rpMauGroupIndex
INTEGER,
rpMauPortIndex
INTEGER,
rpMauIndex
INTEGER,
rpMauType
OBJECT IDENTIFIER,
rpMauStatus
INTEGER,
rpMauMediaAvailable
INTEGER,
rpMauMediaAvailableStateExits
Counter,
rpMauJabberState
INTEGER,
rpMauJabberingStateEnters
Counter
}

rpMauGroupIndex OBJECT-TYPE
SYNTAX INTEGER (1..1024)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This variable uniquely identifies the repeater
group containing the port to which the MAU
described by this entry is connected."
REFERENCE
"Reference RFC1368, rptrGroupIndex."
::= { rpMauEntry 1 }

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RFC 1515 802.3 MAU MIB September 1993

rpMauPortIndex OBJECT-TYPE
SYNTAX INTEGER (1..1024)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This variable uniquely identifies the repeater
port within group rpMauGroupIndex to which the MAU
described by this entry is connected."
REFERENCE
"Reference RFC 1368, rptrPortIndex."
::= { rpMauEntry 2 }

rpMauIndex OBJECT-TYPE
SYNTAX INTEGER (1..9)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This variable uniquely identifies the MAU
connected to port rpMauPortIndex within group
rpMauGroupIndex that is described by this entry."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2, aMAUID."
::= { rpMauEntry 3 }

rpMauType OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This object identifies the 10 Mb/s baseband MAU
type. An initial set of MAU types are defined
above. The assignment of OBJECT IDENTIFIERs to
new types of MAUs is managed by the IANA. If the
MAU type is unknown, the object identifier

unknownMauType OBJECT IDENTIFIER ::= { 0 0 }

is returned. Note that unknownMauType is a
syntactically valid object identifier, and any
conformant implementation of ASN.1 and the BER
must be able to generate and recognize this
value."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aMAUType."
::= { rpMauEntry 4 }

rpMauStatus OBJECT-TYPE

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SYNTAX INTEGER {
other(1),
unknown(2),
operational(3),
standby(4),
shutdown(5),
reset(6)
}
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The current state of the MAU. This object may be
implemented as a read-only object by those agents
and MAUs that do not implement software control of
the MAU state. Some agents may not support
setting the value of this object to some of the
enumerated values.

The value other(1) is returned if the MAU is in a
state other than one of the states 2 through 6.

The value unknown(2) is returned when the MAU's
true state is unknown; for example, when it is
being initialized.

A MAU in the operational(3) state is fully
functional, operates, and passes signals to its
attached DTE or repeater port in accordance to its
specification.

A MAU in standby(4) state forces DI and CI and the
media transmitter to idle. Standby(4) mode only
applies to link type MAUs. The state of
rpMauMediaAvailable is unaffected.

A MAU in shutdown(5) state assumes the same
condition on DI, CI, and the media transmitter as
though it were powered down. The MAU may return
other(1) value for the mauJabber and
rpMauMediaAvailable objects when it is in this
state. For an AUI, this state will remove power
from the AUI.

Setting this variable to the value reset(6) resets
the MAU in the same manner as a power-off, power-
on cycle of at least one-half second would. The
agent is not required to return the value reset
(6).

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RFC 1515 802.3 MAU MIB September 1993

Setting this variable to the value operational(3),
standby(4), or shutdown(5) causes the MAU to
assume the respective state except that setting a
mixing-type MAU or an AUI to standby(4) will cause
the MAU to enter the shutdown state."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aMAUAdminState, and 20.2.3.3, acMAUAdminControl
and acResetMAUAction."
::= { rpMauEntry 5 }

rpMauMediaAvailable OBJECT-TYPE
SYNTAX INTEGER {
other(1),
unknown(2),
available(3),
notAvailable(4),
remoteFault(5),
invalidSignal(6)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"If the MAU is a link or fiber type (FOIRL,
10BASE-T, 10BASE-F) then this is equivalent to the
link test fail state/low light function. For an
AUI or a coax (including broadband) MAU this
indicates whether or not loopback is detected on
the DI circuit. The value of this attribute
persists between packets for MAU types AUI,
10BASE5, 10BASE2, 10BROAD36, and 10BASE-FP.

The value other(1) is returned if the
mediaAvailable state is not one of 2 through 6.

The value unknown(2) is returned when the MAU's
true state is unknown; for example, when it is
being initialized. At power-up or following a
reset, the value of this attribute will be unknown
for AUI, coax, and 10BASE-FP MAUs. For these MAUs
loopback will be tested on each transmission
during which no collision is detected. If DI is
receiving input when DO returns to IDL after a
transmission and there has been no collision
during the transmission then loopback will be
detected. The value of this attribute will only
change during non-collided transmissions for AUI,
coax, and 10BASE-FP MAUs.

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RFC 1515 802.3 MAU MIB September 1993

The value available(3) indicates that the link,
light, or loopback is normal. The value
notAvailable(4) indicates link loss, low light, or
no loopback.

The value remoteFault(5) indicates that a fault
has been detected at the remote end of the link.
The value invalidSignal(6) indicates that an
invalid signal has been received from the other
end of the link. Both remoteFault(5) and
invalidSignal(6) apply only to MAUs of type
10BASE-FB."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aMediaAvailable."
::= { rpMauEntry 6 }

rpMauMediaAvailableStateExits OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A count of the number of times that
rpMauMediaAvailable for this MAU instance leaves
the state available(3)."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
lostMediaCount."
::= { rpMauEntry 7 }

rpMauJabberState OBJECT-TYPE
SYNTAX INTEGER {
other(1),
unknown(2),
noJabber(3),
jabbering(4)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The value other(1) is returned if the jabber
state is not 2, 3, or 4. The agent must always
return other(1) for MAU type dot3MauTypeAUI.

The value unknown(2) is returned when the MAU's
true state is unknown; for example, when it is
being initialized.

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RFC 1515 802.3 MAU MIB September 1993

If the MAU is not jabbering the agent returns
noJabber(3). This is the 'normal' state.

If the MAU is in jabber state the agent returns
the jabbering(4) value."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aJabber.jabberFlag."
::= { rpMauEntry 8 }

rpMauJabberingStateEnters OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A count of the number of times that
rpMauJabberState for this MAU instance enters the
state jabbering(4). For a MAU of type
dot3MauTypeAUI, this counter will always indicate
zero."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aJabber.jabberCounter."
::= { rpMauEntry 9 }

--
-- The Interface MAU Basic Group
--
-- Implementation of the Interface MAU Basic Group is mandatory
-- for MAUs attached to DTEs (interfaces).

--
-- The Basic Interface MAU Table
--

ifMauTable OBJECT-TYPE
SYNTAX SEQUENCE OF IfMauEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table of descriptive and status information about
the MAU(s) attached to an interface."
::= { dot3IfMauBasicGroup 1 }

ifMauEntry OBJECT-TYPE
SYNTAX IfMauEntry
ACCESS not-accessible

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STATUS mandatory
DESCRIPTION
"An entry in the table, containing information
about a single MAU."
INDEX { ifMauIfIndex, ifMauIndex }
::= { ifMauTable 1 }

IfMauEntry ::=
SEQUENCE {
ifMauIfIndex
INTEGER,
ifMauIndex
INTEGER,
ifMauType
OBJECT IDENTIFIER,
ifMauStatus
INTEGER,
ifMauMediaAvailable
INTEGER,
ifMauMediaAvailableStateExits
Counter,
ifMauJabberState
INTEGER,
ifMauJabberingStateEnters
Counter
}

ifMauIfIndex OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This variable uniquely identifies the interface
to which the MAU described by this entry is
connected."
REFERENCE
"Reference RFC 1213, ifIndex."
::= { ifMauEntry 1 }

ifMauIndex OBJECT-TYPE
SYNTAX INTEGER (1..9)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This variable uniquely identifies the MAU
connected to interface ifMauIfIndex that is
described by this entry."
REFERENCE

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RFC 1515 802.3 MAU MIB September 1993

"Reference IEEE 802.3 MAU Mgt, 20.2.3.2, aMAUID."
::= { ifMauEntry 2 }

ifMauType OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This object identifies the 10 Mb/s baseband or
broadband MAU type. An initial set of MAU types
are defined above. The assignment of OBJECT
IDENTIFIERs to new types of MAUs is managed by the
IANA. If the MAU type is unknown, the object
identifier

unknownMauType OBJECT IDENTIFIER ::= { 0 0 }

is returned. Note that unknownMauType is a
syntactically valid object identifier, and any
conformant implementation of ASN.1 and the BER
must be able to generate and recognize this
value."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aMAUType."
::= { ifMauEntry 3 }

ifMauStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1),
unknown(2),
operational(3),
standby(4),
shutdown(5),
reset(6)
}
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The current state of the MAU. This object may be
implemented as a read-only object by those agents
and MAUs that do not implement software control of
the MAU state. Some agents may not support
setting the value of this object to some of the
enumerated values.

The value other(1) is returned if the MAU is in a
state other than one of the states 2 through 6.

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RFC 1515 802.3 MAU MIB September 1993

The value unknown(2) is returned when the MAU's
true state is unknown; for example, when it is
being initialized.

A MAU in the operational(3) state is fully
functional, operates, and passes signals to its
attached DTE or repeater port in accordance to its
specification.

A MAU in standby(4) state forces DI and CI and the
media transmitter to idle. Standby(4) mode only
applies to link type MAUs. The state of
ifMauMediaAvailable is unaffected.

A MAU in shutdown(5) state assumes the same
condition on DI, CI, and the media transmitter as
though it were powered down. The MAU may return
other(1) value for the mauJabber and
ifMauMediaAvailable objects when it is in this
state. For an AUI, this state will remove power
from the AUI.

Setting this variable to the value reset(6) resets
the MAU in the same manner as a power-off, power-
on cycle of at least one-half second would. The
agent is not required to return the value reset
(6).

Setting this variable to the value operational(3),
standby(4), or shutdown(5) causes the MAU to
assume the respective state except that setting a
mixing-type MAU or an AUI to standby(4) will cause
the MAU to enter the shutdown state."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aMAUAdminState, and 20.2.3.3, acMAUAdminControl
and acResetMAUAction."
::= { ifMauEntry 4 }

ifMauMediaAvailable OBJECT-TYPE
SYNTAX INTEGER {
other(1),
unknown(2),
available(3),
notAvailable(4),
remoteFault(5),
invalidSignal(6)
}

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ACCESS read-only
STATUS mandatory
DESCRIPTION
"If the MAU is a link or fiber type (FOIRL,
10BASE-T, 10BASE-F) then this is equivalent to the
link test fail state/low light function. For an
AUI or a coax (including broadband) MAU this
indicates whether or not loopback is detected on
the DI circuit. The value of this attribute
persists between packets for MAU types AUI,
10BASE5, 10BASE2, 10BROAD36, and 10BASE-FP.

The value other(1) is returned if the
mediaAvailable state is not one of 2 through 6.

The value unknown(2) is returned when the MAU's
true state is unknown; for example, when it is
being initialized. At power-up or following a
reset, the value of this attribute will be unknown
for AUI, coax, and 10BASE-FP MAUs. For these MAUs
loopback will be tested on each transmission
during which no collision is detected. If DI is
receiving input when DO returns to IDL after a
transmission and there has been no collision
during the transmission then loopback will be
detected. The value of this attribute will only
change during non-collided transmissions for AUI,
coax, and 10BASE-FP MAUs.

The value available(3) indicates that the link,
light, or loopback is normal. The value
notAvailable(4) indicates link loss, low light, or
no loopback.

The value remoteFault(5) indicates that a fault
has been detected at the remote end of the link.
The value invalidSignal(6) indicates that an
invalid signal has been received from the other
end of the link. Both remoteFault(5) and
invalidSignal(6) apply only to MAUs of type
10BASE-FB."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aMediaAvailable."
::= { ifMauEntry 5 }

ifMauMediaAvailableStateExits OBJECT-TYPE
SYNTAX Counter

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RFC 1515 802.3 MAU MIB September 1993

ACCESS read-only
STATUS mandatory
DESCRIPTION
"A count of the number of times that
ifMauMediaAvailable for this MAU instance leaves
the state available(3)."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
lostMediaCount."
::= { ifMauEntry 6 }

ifMauJabberState OBJECT-TYPE
SYNTAX INTEGER {
other(1),
unknown(2),
noJabber(3),
jabbering(4)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The value other(1) is returned if the jabber
state is not 2, 3, or 4. The agent must always
return other(1) for MAU type dot3MauTypeAUI.

The value unknown(2) is returned when the MAU's
true state is unknown; for example, when it is
being initialized.

If the MAU is not jabbering the agent returns
noJabber(3). This is the 'normal' state.

If the MAU is in jabber state the agent returns
the jabbering(4) value."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aJabber.jabberFlag."
::= { ifMauEntry 7 }

ifMauJabberingStateEnters OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A count of the number of times that
ifMauJabberState for this MAU instance enters the
state jabbering(4). For a MAU of type
dot3MauTypeAUI, this counter will always indicate

McMaster, McCloghrie & Roberts [Page 17]

RFC 1515 802.3 MAU MIB September 1993

zero."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aJabber.jabberCounter."
::= { ifMauEntry 8 }

--
-- The Broadband MAU Basic Group
--
-- Implementation of the Broadband MAU Basic Group is mandatory
-- for broadband MAUs attached to DTEs.

--
-- The Basic Broadband MAU Table
--

broadMauBasicTable OBJECT-TYPE
SYNTAX SEQUENCE OF BroadMauBasicEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table of descriptive and status information about
the broadband MAUs connected to interfaces."
::= { dot3BroadMauBasicGroup 1 }

broadMauBasicEntry OBJECT-TYPE
SYNTAX BroadMauBasicEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"An entry in the table, containing information
about a single broadband MAU."
INDEX { broadMauIfIndex, broadMauIndex }
::= { broadMauBasicTable 1 }

BroadMauBasicEntry ::=
SEQUENCE {
broadMauIfIndex
INTEGER,
broadMauIndex
INTEGER,
broadMauXmtRcvSplitType
INTEGER,
broadMauXmtCarrierFreq
INTEGER,
broadMauTranslationFreq
INTEGER

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RFC 1515 802.3 MAU MIB September 1993

}

broadMauIfIndex OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This variable uniquely identifies the interface
to which the MAU described by this entry is
connected."
REFERENCE
"Reference RFC 1213, ifIndex."
::= { broadMauBasicEntry 1 }

broadMauIndex OBJECT-TYPE
SYNTAX INTEGER (1..9)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This variable uniquely identifies the MAU
connected to interface broadMauIfIndex that is
described by this entry."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2, aMAUID."
::= { broadMauBasicEntry 2 }

broadMauXmtRcvSplitType OBJECT-TYPE
SYNTAX INTEGER {
other(1),
single(2),
dual(3)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This object indicates the type of frequency
multiplexing/cabling system used to separate the
transmit and receive paths for the 10BROAD36 MAU.

The value other(1) is returned if the split type
is not either single or dual.

The value single(2) indicates a single cable
system. The value dual(3) indicates a dual cable
system, offset normally zero."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aBbMAUXmitRcvSplitType."

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RFC 1515 802.3 MAU MIB September 1993

::= { broadMauBasicEntry 3 }

broadMauXmtCarrierFreq OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This variable indicates the transmit carrier
frequency of the 10BROAD36 MAU in MHz/4; that is,
in units of 250 kHz."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aBroadbandFrequencies.xmitCarrierFrequency."
::= { broadMauBasicEntry 4 }

broadMauTranslationFreq OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This variable indicates the translation offset
frequency of the 10BROAD36 MAU in MHz/4; that is,
in units of 250 kHz."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
aBroadbandFrequencies.translationFrequency."
::= { broadMauBasicEntry 5 }

-- Traps for use by 802.3 MAUs

-- Traps are defined using the conventions in RFC 1215 [8].

rpMauJabberTrap TRAP-TYPE
ENTERPRISE snmpDot3MauMgt
VARIABLES { rpMauJabberState }
DESCRIPTION
"This trap is sent whenever a managed repeater MAU
enters the jabber state.

The agent must throttle the generation of
consecutive rpMauJabberTraps so that there is at
least a five-second gap between them."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.4,
nJabberNotification."
::= 1

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RFC 1515 802.3 MAU MIB September 1993

ifMauJabberTrap TRAP-TYPE
ENTERPRISE snmpDot3MauMgt
VARIABLES { ifMauJabberState }
DESCRIPTION
"This trap is sent whenever a managed interface
MAU enters the jabber state.

The agent must throttle the generation of
consecutive ifMauJabberTraps so that there is at
least a five-second gap between them."
REFERENCE
"Reference IEEE 802.3 MAU Mgt, 20.2.3.4,
nJabberNotification."
::= 2

END

5. Acknowledgments

This document is the work of the IETF Hub MIB Working Group. It is
based on a proposal written by Geoff Thompson and modified by the
IEEE 802.3 Repeater Management Task Force. Paul Woodruff provided
valuable corrections and suggestions for improvement.

Members of the IETF Hub MIB Working Group included:

Karl Auerbach [email protected]
Jim Barnes [email protected]
Steve Bostock [email protected]
David Bridgham [email protected]
Jack Brown [email protected]
Howard Brown [email protected]
Lida Canin [email protected]
Jeffrey Case [email protected]
Carson Cheung [email protected]
James Codespote [email protected]
John Cook [email protected]
Dave Cullerot [email protected]
James Davin [email protected]
Gary Ellis [email protected]
David Engel [email protected]
Mike Erlinger [email protected]
Jeff Erwin
Bill Fardy [email protected]
Jeff Fried [email protected]
Bob Friesenhahn [email protected]
Shawn Gallagher [email protected]

McMaster, McCloghrie & Roberts [Page 21]

RFC 1515 802.3 MAU MIB September 1993

Mike Grieves [email protected]
Walter Guilarte [email protected]
Phillip Hasse [email protected]
Mark Hoerth [email protected]
Greg Hollingsworth [email protected]
Ron Jacoby [email protected]
Mike Janson [email protected]
Ken Jones [email protected]
Satish Joshi [email protected]
Frank Kastenholz [email protected]
Manu Kaycee [email protected]
Mark Kepke [email protected]
Mark Kerestes [email protected]
Kenneth Key [email protected]
Yoav Kluger [email protected]
Cheryl Krupczak [email protected]
Ron Lau [email protected]
Chao-Yu Liang [email protected]
Dave Lindemulder [email protected]
Richie McBride [email protected]
Keith McCloghrie [email protected]
Evan McGinnis [email protected]
Donna McMaster [email protected]
David Minnich [email protected]
Lynn Monsanto [email protected]
Miriam Nihart [email protected]
Niels Ole Brunsgaard [email protected]
Edison Paw [email protected]
David Perkins [email protected]
Jason Perreault [email protected]
John Pickens [email protected]
Jim Reinstedler [email protected]
Anil Rijsinghani [email protected]
Sam Roberts [email protected]
Dan Romascanu [email protected]
Marshall Rose [email protected]
Rick Royston [email protected]
Michael Sabo [email protected]
Jonathan Saperia [email protected]
Mark Schaefer [email protected]
Anil Singhal [email protected]
Timon Sloane [email protected]
Bob Stewart [email protected]
Emil Sturniolo [email protected]
Bruce Taber [email protected]
Iris Tal [email protected]
Mark Therieau [email protected]
Geoff Thompson [email protected]

McMaster, McCloghrie & Roberts [Page 22]

RFC 1515 802.3 MAU MIB September 1993

Dean Throop [email protected]
Steven Waldbusser [email protected]
Timothy Walden [email protected]
Philip Wang [email protected]
Drew Wansley [email protected]
David Ward [email protected]
Steve Wong [email protected]
Paul Woodruff [email protected]
Brian Wyld [email protected]
June-Kang Yang [email protected]
Henry Yip [email protected]
John Ziegler [email protected]
Joseph Zur [email protected]

6. References

[1] Rose, M., and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based internets", STD 16, RFC
1155, Performance Systems International, Hughes LAN Systems, May
1990.

[2] McCloghrie, K., and M. Rose, "Management Information Base for
Network Management of TCP/IP-based internets", RFC 1156, Hughes
LAN Systems, Performance Systems International, May 1990.

[3] Case, J., Fedor M., Schoffstall, M., and J. Davin, "Simple
Network Management Protocol", STD 15, RFC 1157, SNMP Research,
Performance Systems International, Performance Systems
International, MIT Laboratory for Computer Science, May 1990.

[4] McCloghrie, K., and M. Rose, Editors, "Management Information
Base for Network Management of TCP/IP-based internets: MIB-II",
STD 17, RFC 1213, Hughes LAN Systems, Performance Systems
International, March 1991.

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

[6] 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.

[7] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",
STD 16, RFC 1212, Performance Systems International, Hughes LAN
Systems, March 1991.

McMaster, McCloghrie & Roberts [Page 23]

RFC 1515 802.3 MAU MIB September 1993

[8] Rose, M., Editor, "A Convention for Defining Traps for use with
the SNMP", RFC 1215, Performance Systems International, March
1991.

[9] IEEE 802.3/ISO 8802-3 Information processing systems - Local
area networks - Part 3: Carrier sense multiple access with
collision detection (CSMA/CD) access method and physical layer
specifications, 2nd edition, September 21, 1990.

[10] IEEE P802.3p, "Layer Management for 10 Mb/s Medium Access Unit
(MAUs), Section 20", Draft Supplement to ANSI/IEEE 802.3, Draft
5, July 11, 1992.

[11] Kastenholz, F., "Definitions of Managed Objects for the
Ethernet-like Interface Types", RFC 1398, FTP Software, Inc.,
January 1993.

[12] McMaster, D., and K. McCloghrie, Editors, "Definitions of
Managed Objects for IEEE 802.3 Repeater Devices", RFC 1368,
SynOptics Communications, Hughes LAN Systems, October 1992.

7. Security Considerations

Security issues are not discussed in this memo.

McMaster, McCloghrie & Roberts [Page 24]

RFC 1515 802.3 MAU MIB September 1993

8. Authors' Addresses

Donna McMaster
SynOptics Communications, Inc.
4401 Great America Parkway
P.O. Box 58185
Santa Clara, CA 95052-8185

Phone: (408) 764-1206
EMail: [email protected]

Keith McCloghrie
Hughes LAN Systems, Inc.
1225 Charleston Road
Mountain View, CA 94043

Phone: (415) 966-7934
EMail: [email protected]

Sam Roberts
Farallon Computing, Inc.
2470 Mariner Square Loop
Alameda, CA 94501-1010

Phone: (510) 814-5215
EMail: [email protected]

McMaster, McCloghrie & Roberts [Page 25]