Network Working Group C. DeSanti

Network Working Group C. DeSanti
Request for Comments: 4438 V. Gaonkar
Category: Standards Track H.K. Vivek
K. McCloghrie
Cisco Systems
S. Gai
Retired
April 2006

Fibre Channel Name Server MIB

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 (2006).

Abstract

This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes managed objects for information related
to the Name Server function of a Fibre Channel network. The Fibre
Channel Name Server provides a means for Fibre Channel ports to
register and discover Fibre Channel names and attributes.

DeSanti, et al. Standards Track [Page 1]

RFC 4438 Fibre Channel Name Server MIB April 2006

Table of Contents

1. Introduction ....................................................3
2. The Internet-Standard Management Framework ......................3
3. Short Overview of Fibre Channel .................................3
4. Relationship to Other MIBs ......................................5
5. MIB Overview ....................................................5
5.1. Fibre Channel Management Instance ..........................5
5.2. Name Server Information Subset .............................5
5.3. Fabric Index ...............................................6
5.4. The MIB Groups .............................................6
5.4.1. The t11NsDBGroup Group ..............................6
5.4.2. Three Statistics Groups .............................7
5.4.3. The t11NsNotifyGroup Group ..........................7
5.4.4. The t11NsNotifyControlGroup Group ...................7
5.5. The Actual Values of Objects ...............................7
6. The T11-FC-NAME-SERVER-MIB Module ...............................8
7. Acknowledgements ...............................................31
8. Normative References ...........................................32
9. Informative References .........................................33
10. IANA Considerations ...........................................33
11. Security Considerations .......................................33

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RFC 4438 Fibre Channel Name Server MIB April 2006

1. Introduction

This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes managed objects for information related
to the Fibre Channel network's Name Server function, which provides a
means for Fibre Channel ports to register and discover Fibre Channel
attributes. Such attributes include names, addresses, types,
features, etc., at various protocol layers.

2. The Internet-Standard Management Framework

For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7 of
RFC 3410 [RFC3410].

Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. MIB objects are generally
accessed through the Simple Network Management Protocol (SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a MIB
module that is compliant to the SMIv2, which is described in STD 58,
RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
[RFC2580].

3. Short Overview of Fibre Channel

The Fibre Channel (FC) is logically a bidirectional point-to-point
serial data channel, structured for high performance. Fibre Channel
provides a general transport vehicle for higher-level protocols such
as Small Computer System Interface (SCSI) command sets, the High-
Performance Parallel Interface (HIPPI) data framing, IP (Internet
Protocol), IEEE 802.2, and others.

Physically, Fibre Channel is an interconnection of multiple
communication points, called N_Ports, interconnected either by a
switching network, called a Fabric, or by a point-to-point link. A
Fibre Channel "node" consists of one or more N_Ports. A Fabric may
consist of multiple Interconnect Elements, some of which are
switches. An N_Port connects to the Fabric via a port on a switch
called an F_Port. When multiple FC nodes are connected to a single
port on a switch via an "Arbitrated Loop" topology, the switch port
is called an FL_Port, and the nodes' ports are called NL_Ports. The
term Nx_Port is used to refer to either an N_Port or an NL_Port. The
term Fx_Port is used to refer to either an F_Port or an FL_Port. A
switch port, which is interconnected to another switch port via an

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RFC 4438 Fibre Channel Name Server MIB April 2006

Inter-Switch Link (ISL), is called an E_Port. A B_Port connects a
bridge device with an E_Port on a switch; a B_Port provides a subset
of E_Port functionality.

Many Fibre Channel components, including the Fabric, each node, and
most ports, have globally-unique names. These globally-unique names
are typically formatted as World Wide Names (WWNs). More information
on WWNs can be found in [FC-FS]. WWNs are expected to be persistent
across agent and unit resets.

Fibre Channel frames contain 24-bit address identifiers, which
identify the frame's source and destination ports. Each FC port has
both an address identifier and a WWN. When a fabric is in use, the
FC address identifiers are dynamic and are assigned by a switch.
Each octet of a 24-bit address represents a level in an address
hierarchy, with a Domain_ID being the highest level of the hierarchy.

The Fibre Channel Name Server provides a way for N_Ports and NL_Ports
to register and discover Fibre Channel attributes. Such attributes
include names, addresses, types, features, etc., at various protocol
layers, including upper layer protocols specific to Fibre Channel
(which are sometimes called "FC-4s"). Communication with the Name
Server is via Fibre Channel's CT (Common Transport for Generic
Services) using "Information Units" (called CT_IUs) as either
requests, responses, or unsolicited.

Registrations may be performed by a third party. However, the Name
Server may refuse such third-party registration for unspecified
reasons. Once registered, the attributes are made available to
requestors.

Requestors could learn about new registrations via periodic polling
of the Name Server, but such polling would generate a considerable
overhead. To avoid this overhead, the Registered State Change
Notification (RSCN) mechanism defined in FC-FS [FC-FS] allows an
Nx_Port to register to receive an RSCN whenever an event occurs that
may affect the state of other Nx_Port(s), including changes in the
information registered with the Name Server.

The Fibre Channel Name Server is defined in the FC-GS specification,
The latest specification is [FC-GS-4]; the previous version was
[FC-GS-3].

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RFC 4438 Fibre Channel Name Server MIB April 2006

4. Relationship to Other MIBs

The first standardized MIB for Fibre Channel [RFC2837] was focused on
Fibre Channel switches. It was obsoleted by the more generic Fibre
Channel Management MIB [FC-MGMT], which defines basic information for
Fibre Channel hosts and switches, including extensions to the
standard IF-MIB [IF-MIB] for Fibre Channel interfaces.

This MIB extends beyond [FC-MGMT] to cover the functionality, in
Fibre Channel switches, of providing Fibre Channel's Name Server
function.

This MIB also imports some common textual conventions from
T11-TC-MIB, defined in [FC-FAM-MIB].

5. MIB Overview

This MIB module provides the means for monitoring the operation of,
and configuring some parameters of, one or more instances of Fibre
Channel Name Server functionality. (Note that there are no
definitions in this MIB module of "managed actions" that can be
invoked via SNMP.)

5.1. Fibre Channel Management Instance

A Fibre Channel management instance is defined in [FC-MGMT] as a
separable managed instance of Fibre Channel functionality. Fibre
Channel functionality may be grouped into Fibre Channel management
instances in whatever way is most convenient for the
implementation(s). For example, one such grouping accommodates a
single SNMP agent having multiple AgentX [RFC2741] sub-agents, with
each sub-agent implementing a different Fibre Channel management
instance.

The object, fcmInstanceIndex, is IMPORTed from the FC-MGMT-MIB
[FC-MGMT] as the index value to uniquely identify each Fibre Channel
management instance within the same SNMP context ([RFC3411], section
3.3.1).

5.2. Name Server Information Subset

In addition to allowing for multiple Fibre Channel management
instances, this MIB is based on the notion that the information
registered with the Name Server is available as one or more subsets.
The MIB allows the different subsets to be accessed either:

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RFC 4438 Fibre Channel Name Server MIB April 2006

- via different SNMP agents/contexts,
- via different Fibre Channel management instances within the
same SNMP agent/context, and/or
- via the same Fibre Channel management instance within the
same SNMP agent/context.

The union of these subsets (across all agents/contexts in the
network) represents the total set of information registered with the
Name Server. Note that the intersection of the subsets is often
non-empty, and the use of the term "subset" does not preclude any
subset from containing the complete set of Name Server information.
Each of these subsets is identified using an index value called a
Name Server Information Subset Index.

Thus, all objects in this MIB are in tables that are INDEXed by at
least fcmInstanceIndex and t11NsInfoSubsetIndex, where the latter
contains a Name Server Information Subset Index value.

5.3. Fabric Index

The [FC-SW-3] standard for an interconnecting Fabric consisting of
multiple Fabric Switch elements describes the operation of a single
Fabric in a physical infrastructure. The current [FC-SW-4] standard
also supports the operation of multiple Virtual Fabrics operating
within one (or more) physical infrastructures. In such a scenario,
each Fabric has, of course, its own management instrumentation. In
order to accommodate this scenario, this MIB module defines all
Fabric-related information in tables that are INDEXed by an arbitrary
integer, named a "Fabric Index". In a Fabric that is conformant to
[FC-SW-3], the value of this Fabric Index will always be 1.

5.4. The MIB Groups

This section describes the six MIB groups contained in the MIB.

5.4.1. The t11NsDBGroup Group

This group contains information about the operation of the Name
Server function acting upon a Name Server Information Subset,
including an indication of whether such operation is performed local
to a particular Fibre Channel switch, or independently of a Fibre
Channel switch. It also contains the information currently
registered in a particular Name Server Information Subset.

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RFC 4438 Fibre Channel Name Server MIB April 2006

5.4.2. Three Statistics Groups

There are three groups of Name Server statistics objects:

t11NsRequestStatsGroup -- stats about requests
t11NsRscnStatsGroup -- stats about (Name Server) RSCNs
t11NsRejectStatsGroup -- stats about rejects

Each of these groups is conditionally mandatory; specifically, each
group contains objects for particular statistics such that
implementation of the group is mandatory only for an implementation
that counts/captures the group's particular statistics.

The intent here is not to force implementations to capture these
statistics, but rather to have all implementations that do capture
them, provide access to them via the same MIB objects.

5.4.3. The t11NsNotifyGroup Group

This group contains a set of notifications that provide for
monitoring the rejections of Name Server Registration Requests.

5.4.4. The t11NsNotifyControlGroup Group

This group contains objects for controlling the generation of, and
for information to be included in, the notifications defined in the
t11NsNotifyGroup group.

5.5. The Actual Values of Objects

The objects defined in the t11NsRegTable represent the values
registered with the Name Server. The SNMP agent MUST report the
actual values, even if they are incorrectly formatted. This is the
reason why, for example, the two objects that represent IP addresses,
t11NsNodeIpAddress and t11NsPortIpAddress, have the SYNTAX of OCTET
STRING, so that they are able to represent invalid values (which
could not be represented using InetAddressType and InetAddress).

Similarly, each set of (t11NsRejectReasonCode, t11NsRejReasonCodeExp,
t11NsRejReasonVendorCode) objects must hold the values of the actual
reject, explanation, and vendor-specific codes that were present in
the generated Reject message (the "Reject CT_IU"), irrespective of
whether or not such code values were appropriate.

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RFC 4438 Fibre Channel Name Server MIB April 2006

6. The T11-FC-NAME-SERVER-MIB Module

T11-FC-NAME-SERVER-MIB DEFINITIONS ::= BEGIN

-- The MIB for management of the Fibre Channel functionality which
-- implements the Name Server function.

IMPORTS
MODULE-IDENTITY,OBJECT-TYPE,
NOTIFICATION-TYPE, Unsigned32,
Counter32, Integer32, mib-2 FROM SNMPv2-SMI -- [RFC2578]
MODULE-COMPLIANCE, OBJECT-GROUP,
NOTIFICATION-GROUP FROM SNMPv2-CONF -- [RFC2580]
SnmpAdminString FROM SNMP-FRAMEWORK-MIB -- [RFC3411]
TruthValue, TEXTUAL-CONVENTION,
TimeStamp FROM SNMPv2-TC -- [RFC2579]
fcmInstanceIndex, FcPortType,
FcAddressIdOrZero, FcClasses,
FcNameIdOrZero FROM FC-MGMT-MIB -- [FC-MGMT]
T11FabricIndex FROM T11-TC-MIB -- [FC-FAM-MIB]
t11FamLocalSwitchWwn
FROM T11-FC-FABRIC-ADDR-MGR-MIB; -- [FC-FAM-MIB]

t11FcNameServerMIB MODULE-IDENTITY
LAST-UPDATED "200603020000Z"
ORGANIZATION "T11"
CONTACT-INFO
" Claudio DeSanti
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134 USA
Phone: +1 408 853-9172
EMail: [email protected]

Keith McCloghrie
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA USA 95134
Phone: +1 408-526-5260
EMail: [email protected]"
DESCRIPTION
"The MIB module for the management of the functionality,
which realizes the FC-GS-4 requirements for Name
Server (NS).

Copyright (C) The Internet Society (2006). This version of
this MIB module is part of RFC 4438; see the RFC itself for
full legal notices."

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RFC 4438 Fibre Channel Name Server MIB April 2006

REVISION "200603020000Z"
DESCRIPTION
"Initial version of this MIB module, published as RFC 4438."
::= { mib-2 135 }

t11NsNotifications OBJECT IDENTIFIER ::= { t11FcNameServerMIB 0 }
t11NsMIBObjects OBJECT IDENTIFIER ::= { t11FcNameServerMIB 1 }
t11NsMIBConformance OBJECT IDENTIFIER ::= { t11FcNameServerMIB 2 }
t11NsStatus OBJECT IDENTIFIER ::= { t11NsMIBObjects 1 }
t11NsStatistics OBJECT IDENTIFIER ::= { t11NsMIBObjects 2 }

-- Textual Conventions

T11NsGs4RejectReasonCode ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The FC-GS-4 reject reason code for a request.

none(1)
- no error.
invalidCmdCode(2)
- request contained an invalid command code.
invalidVerLevel(3)
- request contained an invalid version number.
logicalError(4)
- there was a logical error.
invalidIUSize(5)
- the CT_IU (Information Unit) size was invalid.
logicalBusy(6)
- the module is busy.
protocolError(7)
- there was a protocol error.
unableToPerformCmdReq(8)
- the command specified in the req could not be
executed. The details of exactly what failed
will be in the corresponding reason code
explanation.
cmdNotSupported(9)
- the command is not supported.
serverNotAvailable(10)
- the identified server was not available.
couldNotEstabSession(11)
- a server session could not be established.
vendorError(12)
- a vendor-specific error."
REFERENCE
"ANSI INCITS 387-2004, Fibre Channel - Generic
Services-4 (FC-GS-4), section 4.4.3."

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RFC 4438 Fibre Channel Name Server MIB April 2006

SYNTAX INTEGER {
none(1),
invalidCmdCode(2),
invalidVerLevel(3),
logicalError(4),
invalidIUSize(5),
logicalBusy(6),
protocolError(7),
unableToPerformCmdReq(8),
cmdNotSupported(9),
serverNotAvailable(10),
couldNotEstabSession(11),
vendorError(12)
}

T11NsRejReasonCodeExpl ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The reject reason code explanation:

noAdditionalExplanation(1)
- no additional explanation.
portIdentifierNotRegistered(2)
- Port Identifier not registered.
portNameNotRegistered(3)
- Port Name not registered.
nodeNameNotRegistered(4)
- Node Name not registered.
classOfServiceNotRegistered(5)
- Class of Service not registered.
nodeIpAddressNotRegistered(6)
- 'IP Address (Node)' value not registered.
ipaNotRegistered(7)
- Initial Process Associator (IPA) not registered.
fc4TypeNotRegistered(8)
- FC-4 TYPEs not registered.
symbolicPortNameNotRegistered(9)
- Symbolic Port Name not registered.
symbolicNodeNameNotRegistered(10)
- Symbolic Node Name not registered.
portTypeNotRegistered(11)
- 'Port Type' not registered.
portIpAddressNotRegistered(12)
- 'IP Address (Port)' value not registered.
fabricPortNameNotRegistered(13)
- Fabric Port Name not registered.
hardAddressNotRegistered(14)
- 'Hard Address' not registered.

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RFC 4438 Fibre Channel Name Server MIB April 2006

fc4DescriptorNotRegistered(15)
- FC-4 Descriptor not registered.
fc4FeaturesNotRegistered(16)
- FC-4 Features not registered.
accessDenied(17)
- Access denied.
unacceptablePortIdentifier(18)
- Unacceptable Port Identifier.
databaseEmpty(19)
- Database is empty.
noObjectRegInSpecifiedScope(20)
- no object has been registered in the specified
scope.
domainIdNotPresent(21)
- Domain ID not present.
portIdNotPresent(22)
- Port number not present.
noDeviceAttached(23)
- No device attached.
authorizationException(24)
- Authorization Exception.
authenticationException(25)
- Authentication Exception.
databaseFull(26)
- Database full."
REFERENCE
"ANSI INCITS 387-2004, Fibre Channel - Generic
Services-4 (FC-GS-4), sections 4.4.4 and 5.2.4"
SYNTAX INTEGER {
noAdditionalExplanation(1),
portIdentifierNotRegistered(2),
portNameNotRegistered(3),
nodeNameNotRegistered(4),
classOfServiceNotRegistered(5),
nodeIpAddressNotRegistered(6),
ipaNotRegistered(7),
fc4TypeNotRegistered(8),
symbolicPortNameNotRegistered(9),
symbolicNodeNameNotRegistered(10),
portTypeNotRegistered(11),
portIpAddressNotRegistered(12),
fabricPortNameNotRegistered(13),
hardAddressNotRegistered(14),
fc4DescriptorNotRegistered(15),
fc4FeaturesNotRegistered(16),
accessDenied(17),
unacceptablePortIdentifier(18),
databaseEmpty(19),

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RFC 4438 Fibre Channel Name Server MIB April 2006

noObjectRegInSpecifiedScope(20),
domainIdNotPresent(21),
portIdNotPresent(22),
noDeviceAttached(23),
authorizationException(24),
authenticationException(25),
databaseFull(26)
}

--
-- Information about a Name Server Information Subset
--

t11NsInfoSubsetTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11NsInfoSubsetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains one entry for each Name Server
Information Subset within each Fibre Channel
management instance."
::= { t11NsStatus 1 }

t11NsInfoSubsetEntry OBJECT-TYPE
SYNTAX T11NsInfoSubsetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This entry contains information about operations
on a particular Name Server Information Subset
within the Fibre Channel management instance
identified by fcmInstanceIndex."
INDEX { fcmInstanceIndex, t11NsInfoSubsetIndex }
::= { t11NsInfoSubsetTable 1 }

T11NsInfoSubsetEntry ::= SEQUENCE {
t11NsInfoSubsetIndex Unsigned32,
t11NsInfoSubsetSwitchIndex Unsigned32,
t11NsInfoSubsetTableLastChange TimeStamp,
t11NsInfoSubsetNumRows Integer32,
t11NsInfoSubsetTotalRejects Counter32,
t11NsInfoSubsetRejReqNotfyEnable TruthValue
}

t11NsInfoSubsetIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
MAX-ACCESS not-accessible
STATUS current

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RFC 4438 Fibre Channel Name Server MIB April 2006

DESCRIPTION
"An arbitrary integer value that uniquely identifies
this Name Server Information Subset amongst all others
within the same Fibre Channel management instance.

It is mandatory to keep this value constant between
restarts of the agent and to make every possible
effort to keep it constant across such restarts."
::= { t11NsInfoSubsetEntry 1 }

t11NsInfoSubsetSwitchIndex OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object is zero when operations
upon this Name Server Information Subset do not occur
at a local Fibre Channel switch; otherwise, it is
non-zero and identifies the local switch.

The switch identified by a non-zero value of this
object is the same switch as is identified by the
same value of fcmSwitchIndex."
REFERENCE
"fcmSwitchIndex is defined in the FC-MGMT-MIB module"
::= { t11NsInfoSubsetEntry 2 }

t11NsInfoSubsetTableLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime at the time of the last update
to any entry in the t11NsRegTable with the same values
of fcmInstanceIndex and t11NsInfoSubsetIndex. This
includes creation of an entry, deletion of an entry, or
modification of an existing entry. If no such update
has taken place since the last re-initialization of the
local network management subsystem, then this object
contains a zero value."
::= { t11NsInfoSubsetEntry 3 }

t11NsInfoSubsetNumRows OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Nx_Ports currently registered in this

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RFC 4438 Fibre Channel Name Server MIB April 2006

Name Server Information Subset, i.e., the number of
rows in the t11NsRegTable with the same values of
fcmInstanceIndex and t11NsInfoSubsetIndex."
::= { t11NsInfoSubsetEntry 4 }

t11NsInfoSubsetTotalRejects OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of (CT_IU) Requests for Name Server
functions that were rejected for inclusion in this
Name Server Information Subset, across all Fabrics
for which it contains information.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11NsInfoSubsetEntry 5 }

t11NsInfoSubsetRejReqNotfyEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object indicates whether 't11NsRejectRegNotify'
notifications are generated by rejections of requests
to register information in this Name Server Information
Subset.

If value of this object is 'true', then the
notification is generated when a request is rejected.
If it is 'false', the notification is not generated.

The persistence of values of this object across an
agent reboot is implementation-dependent."
DEFVAL { false }
::= { t11NsInfoSubsetEntry 6 }

--
-- Registered Port Information
--

t11NsRegTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11NsRegEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains entries for all Nx_Ports registered

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RFC 4438 Fibre Channel Name Server MIB April 2006

in the identified Name Server Information Subsets across
all Fabrics for which such subsets contain information."
::= { t11NsStatus 2 }

t11NsRegEntry OBJECT-TYPE
SYNTAX T11NsRegEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry containing information about an Nx_Port
represented by t11NsRegPortIdentifier that is registered
with a Name Server Information Subset (identified by
t11NsInfoSubsetIndex) within the Fibre Channel management
instance (identified by fcmInstanceIndex) on the Fabric
(identified by t11NsRegFabricIndex)."
INDEX { fcmInstanceIndex, t11NsInfoSubsetIndex,
t11NsRegFabricIndex, t11NsRegPortIdentifier }
::= { t11NsRegTable 1 }

T11NsRegEntry ::= SEQUENCE {
t11NsRegFabricIndex T11FabricIndex,
t11NsRegPortIdentifier FcAddressIdOrZero,
t11NsRegPortName FcNameIdOrZero,
t11NsRegNodeName FcNameIdOrZero,
t11NsRegClassOfSvc FcClasses,
t11NsRegNodeIpAddress OCTET STRING,
t11NsRegProcAssoc OCTET STRING,
t11NsRegFc4Type OCTET STRING,
t11NsRegPortType FcPortType,
t11NsRegPortIpAddress OCTET STRING,
t11NsRegFabricPortName FcNameIdOrZero,
t11NsRegHardAddress FcAddressIdOrZero,
t11NsRegSymbolicPortName SnmpAdminString,
t11NsRegSymbolicNodeName SnmpAdminString,
t11NsRegFc4Features OCTET STRING
}

t11NsRegFabricIndex OBJECT-TYPE
SYNTAX T11FabricIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique index value that uniquely identifies a
particular Fabric.

In a Fabric conformant to SW-3, only a single Fabric can
operate within a single physical infrastructure, and thus,
the value of this Fabric Index will always be 1.

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RFC 4438 Fibre Channel Name Server MIB April 2006

However, it is possible that future standards will define
how multiple Fabrics, each with its own management
instrumentation, could operate within one (or more) physical
infrastructures. To allow for this future possibility, this
index value is used to uniquely identify a particular
Fabric within a physical infrastructure."
::= { t11NsRegEntry 1 }

t11NsRegPortIdentifier OBJECT-TYPE
SYNTAX FcAddressIdOrZero
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Fibre Channel Address Identifier of this Nx_Port.
If no Port Identifier has been registered, then the
value of this object is the zero-length string."
::= { t11NsRegEntry 2 }

t11NsRegPortName OBJECT-TYPE
SYNTAX FcNameIdOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Port_Name (WWN) of this Nx_Port.
If this object has not been registered, then its value
is the zero-length string."
DEFVAL {''H}
::= { t11NsRegEntry 3 }

t11NsRegNodeName OBJECT-TYPE
SYNTAX FcNameIdOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Node_Name (WWN) of this Nx_Port.
If this object has not been registered, then its value
is the zero-length string."
DEFVAL {''H}
::= { t11NsRegEntry 4 }

t11NsRegClassOfSvc OBJECT-TYPE
SYNTAX FcClasses
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The class of service indicator. This object is an
array of bits that contain a bit map of the classes of
service supported by the associated port. If a bit in

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RFC 4438 Fibre Channel Name Server MIB April 2006

this object is 1, it indicates that the class of
service is supported by the associated port. When a
bit is set to 0, it indicates that no class of service
is supported by this Nx_Port.

If this object has not been not registered for a port,
then the instance for that port is not instantiated."
::= { t11NsRegEntry 5 }

t11NsRegNodeIpAddress OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0 | 16))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The IP address of the node of this Nx_Port, in
network-byte order, either as a 32-bit IPv4 address or
a 128-bit IPv6 address. For the former, the leftmost 96 bits
(12 bytes) should contain x'00 00 00 00 00 00 00 00 00 00 FF
FF', and the IPv4 address should be present in the rightmost
32 bits.

Note that the value of this object is the IP address value
that is received in the FC-GS-4 message Register IP address
(Node) RIP_NN. It is not validated against any IP address
format.

If no 'IP address (Node)' has been registered, then the
value of this object is the zero-length string."
REFERENCE
"ANSI INCITS 387-2004, Fibre Channel - Generic
Services-4 (FC-GS-4)"
DEFVAL { ''H }
::= { t11NsRegEntry 6 }

t11NsRegProcAssoc OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0 | 8))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Fibre Channel Initial Process Associator (IPA).

If no 'Initial Process Associator' has been registered,
then the value of this object is the zero-length string."
REFERENCE
"ANSI INCITS 387-2004, Fibre Channel - Generic
Services-4 (FC-GS-4)"
DEFVAL { ''H }
::= { t11NsRegEntry 7 }

DeSanti, et al. Standards Track [Page 17]

RFC 4438 Fibre Channel Name Server MIB April 2006

t11NsRegFc4Type OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0 | 32))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The FC-4 protocol types supported by this Nx_Port.
This is an array of 256 bits. Each bit in the array
corresponds to a Type value as defined by Fibre Channel
standards and contained in the Type field of the frame
header. The order of the bits in the 256-bit (32-byte)
value is the same as defined in FC-GS-4, section 5.2.3.8,
and represented in network-byte order.

If no 'FC-4 TYPEs' has been registered, then the
value of this object is the zero-length string."
REFERENCE
"ANSI INCITS 387-2004, Fibre Channel - Generic
Services-4 (FC-GS-4), section 5.2.3.8."
DEFVAL { ''H }
::= { t11NsRegEntry 8 }

t11NsRegPortType OBJECT-TYPE
SYNTAX FcPortType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The port type of this port.

If no 'Port Type' has been registered, then the value
of this object is unidentified and is represented by
the value 'unknown'."
DEFVAL { 1 } -- 'unknown', see [FC-MGMT]
::= { t11NsRegEntry 9 }

t11NsRegPortIpAddress OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0 | 16))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value that Fibre Channel calls an 'IP Address (Port)'
that represents the IP address of the associated port.
The value is either in 32-bit IPv4 format or 128-bit IPv6
format, in network-byte order. When this object contains an
IPv4 address, the leftmost 96 bits (12 bytes) should contain
x'00 00 00 00 00 00 00 00 00 00 FF FF'. The IPv4 address
should be present in the rightmost 32 bits.

Note that the value of this object is the IP address value

DeSanti, et al. Standards Track [Page 18]

RFC 4438 Fibre Channel Name Server MIB April 2006

that is received in the FC-GS-4 message Register IP address
(Port) RIPP_ID. It is not validated against any IP address
format.

If no 'IP address (Port)' has been registered, then the
value of this object is the zero-length string."
REFERENCE
"ANSI INCITS 387-2004, Fibre Channel - Generic
Services-4, (FC-GS-4)"
DEFVAL {''H}
::= { t11NsRegEntry 10 }

t11NsRegFabricPortName OBJECT-TYPE
SYNTAX FcNameIdOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Fabric Port Name (WWN) of the Fx_Port to which
this Nx_Port is attached.

If no 'Fabric Port Name' has been registered, then the
value of this object is the zero-length string."
DEFVAL {''H}
::= { t11NsRegEntry 11 }

t11NsRegHardAddress OBJECT-TYPE
SYNTAX FcAddressIdOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The format of this object is identical to the format
of Hard Address defined in the Discover Address (ADISC)
Extended Link Service (FC-FS).

Hard Address is the 24-bit NL_Port identifier that
consists of:
- the 8-bit Domain_ID in the most significant byte
- the 8-bit Area_ID in the next most significant
byte
- the 8-bit AL-PA (Arbitrated Loop Physical Address)
which an NL_Port attempts acquire during FC-AL
initialization in the least significant byte.

If the port is not an NL_Port, or if it is an NL_Port
but does not have a hard address, then all bits are
reported as zeros.

If no 'Hard Address' has been registered, then the

DeSanti, et al. Standards Track [Page 19]

RFC 4438 Fibre Channel Name Server MIB April 2006

value of this object is the zero-length string."
DEFVAL {''H}
::= { t11NsRegEntry 12 }

t11NsRegSymbolicPortName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The user-defined name of this port.

If no 'Symbolic Port Name' has been registered, then
the value of this object is the zero-length string."
DEFVAL {''H}
::= { t11NsRegEntry 13 }

t11NsRegSymbolicNodeName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The user-defined name of the node of this port.

If no 'Symbolic Node Name' has been registered, then
the value of this object is the zero-length string."
DEFVAL {''H}
::= { t11NsRegEntry 14 }

t11NsRegFc4Features OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0 | 128))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The FC-4 Features associated with FC-4 Types on this
port encoded as a 128-byte value in network-byte order,
or the zero-length string if no 'FC-4 Features' have been
registered.

Section 5.2.3.15 of FC-GS-4 is the authoritative
definition of the format of the 128-byte value,
i.e., if different, FC-GS-4 takes precedence over the
following description:

The 128-byte value is an array of 4-bit values, one for
each FC-4 Type value, positioned as follows: the 5 most
significant bits of a Type value identify where it appears
within the 128-byte value, specifically, within which word:

DeSanti, et al. Standards Track [Page 20]

RFC 4438 Fibre Channel Name Server MIB April 2006

- Word 0 (of the 128-byte value) contains information
related to Types '00' through '07';
- Word 1 contains information related to Types
'08' through 0F';
- and so forth, up to Word 31, which contains
information related to Types 'F8' through 'FF'.

The least significant of the eight 4-bit values in each
Word represents an FC-4 Type with 000 as its 3 least
significant bits, and most significant 4-bit value in
each Word represents an FC-4 Type with 111 as its 3 least
significant bits."
REFERENCE
"ANSI INCITS 387-2004, Fibre Channel - Generic
Services-4 (FC-GS-4), section 5.2.3.15."
DEFVAL {''H}
::= { t11NsRegEntry 15 }

--
-- Registered FC-4 Descriptors
--

t11NsRegFc4DescriptorTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11NsRegFc4DescriptorEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains entries for all FC-4 Descriptors
registered in the identified Name Server Information
Subsets across all Fabrics for which such subsets
contain information."
::= { t11NsStatus 3 }

t11NsRegFc4DescriptorEntry OBJECT-TYPE
SYNTAX T11NsRegFc4DescriptorEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the t11NsRegFc4DescriptorTable,
containing information about an FC-4 Descriptor
that is associated with a particular FC-4 Type
value. The particular FC-4 Descriptor was
registered by an Nx_Port (identified by
t11NsRegPortIdentifier) in a Name Server Information
Subset (identified by t11NsInfoSubsetIndex) within
the Fibre Channel management instance (identified by
fcmInstanceIndex) on the Fabric (identified by

DeSanti, et al. Standards Track [Page 21]

RFC 4438 Fibre Channel Name Server MIB April 2006

t11NsRegFabricIndex).

If no FC-4 Descriptors have been registered
for a particular port, then there will be no
entries in this table for that port."
INDEX { fcmInstanceIndex, t11NsInfoSubsetIndex,
t11NsRegFabricIndex, t11NsRegPortIdentifier,
t11NsRegFc4TypeValue }
::= { t11NsRegFc4DescriptorTable 1 }

T11NsRegFc4DescriptorEntry ::= SEQUENCE {
t11NsRegFc4TypeValue Unsigned32,
t11NsRegFc4Descriptor OCTET STRING
}

t11NsRegFc4TypeValue OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An integer value that identifies an FC-4 Type value
(representing a particular protocol type, as specified
in FC-FS) for which an FC-4 Descriptor has been
registered.

An instance of this object contains a 'Type value'
that corresponds to a '1' bit in the value of the
t11NsRegFc4Type registered for the same port;
this correspondence is as specified in FC-GS-4."
REFERENCE
"ANSI INCITS 387-2004, Fibre Channel - Generic
Services-4 (FC-GS-4), section 5.2.3.8, and
ANSI INCITS 373-2003, Fibre Channel - Framing and
Signaling (FC-FS), section 9.6, Table 29."
::= { t11NsRegFc4DescriptorEntry 1 }

t11NsRegFc4Descriptor OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The FC-4 Descriptor value that has been registered
for the particular port on the particular Fabric, and
for the FC-4 Type represented by the corresponding
value of t11NsRegFc4TypeIndex.

The format of an FC-4 Descriptor is dependent on the
corresponding FC-4 Type value, but is represented in

DeSanti, et al. Standards Track [Page 22]

RFC 4438 Fibre Channel Name Server MIB April 2006

network-byte order."
REFERENCE
"ANSI INCITS 387-2004, Fibre Channel - Generic
Services-4 (FC-GS-4), section 5.2.5.42"
::= { t11NsRegFc4DescriptorEntry 2 }

--
-- Name Server per-Fabric Statistics
--

t11NsStatsTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11NsStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains per-Fabric state and statistics
for operations upon the identified Name Server
Information Subsets."
::= { t11NsStatistics 1 }

t11NsStatsEntry OBJECT-TYPE
SYNTAX T11NsStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table contains state and statistics
for operations upon a Name Server Information Subset
(identified by t11NsInfoSubsetIndex) within the Fibre
Channel management instance (identified by
fcmInstanceIndex) on the Fabric (identified by
t11NsRegFabricIndex)."
INDEX { fcmInstanceIndex, t11NsInfoSubsetIndex,
t11NsRegFabricIndex }
::= { t11NsStatsTable 1 }

T11NsStatsEntry ::= SEQUENCE {
t11NsInGetReqs Counter32,
t11NsOutGetReqs Counter32,
t11NsInRegReqs Counter32,
t11NsInDeRegReqs Counter32,
t11NsInRscns Counter32,
t11NsOutRscns Counter32,
t11NsRejects Counter32,
t11NsDatabaseFull TruthValue
}

t11NsInGetReqs OBJECT-TYPE

DeSanti, et al. Standards Track [Page 23]

RFC 4438 Fibre Channel Name Server MIB April 2006

SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of (CT_IU) Get Requests
received requesting information from this Name
Server Information Subset on this Fabric.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11NsStatsEntry 1 }

t11NsOutGetReqs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of (CT_IU) Get Requests sent in
order to obtain information needed in this Name Server
Information Subset on this Fabric.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11NsStatsEntry 2 }

t11NsInRegReqs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of (CT_IU) Registration Requests
received to register information in the Name Server
Information Subset on this Fabric.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11NsStatsEntry 3 }

t11NsInDeRegReqs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of (CT_IU) De-registration Requests
received to de-register information from this Name Server
Information Subset on this Fabric.

This counter has no discontinuities other than those

DeSanti, et al. Standards Track [Page 24]

RFC 4438 Fibre Channel Name Server MIB April 2006

that all Counter32s have when sysUpTime=0."
::= { t11NsStatsEntry 4 }

t11NsInRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of received RSCNs, indicating
Name Server-related changes relating to this Name
Server Information Subset on this Fabric.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11NsStatsEntry 5 }

t11NsOutRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of transmitted RSCNs, indicating
Name Server-related changes relating to this Name
Server Information Subset on this Fabric.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11NsStatsEntry 6 }

t11NsRejects OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of CT_IU Requests for Name
Server functions on this Name Server Information
Subset on this Fabric that were rejected.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11NsStatsEntry 7 }

t11NsDatabaseFull OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An indication of whether the database containing this

DeSanti, et al. Standards Track [Page 25]

RFC 4438 Fibre Channel Name Server MIB April 2006

Name Server Information Subset is full. This object is
set to 'true' only if the Name Server is unable to allocate
space for a new entry for the corresponding Fabric, and it is
set to 'false' whenever an existing entry is deleted for the
corresponding Fabric."
::= { t11NsStatsEntry 8 }

--
-- Reject information objects
--

t11NsRejectTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11NsRejectEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains information about the most recent
Name Server Registration Request failures for various
ports on various Fabrics.

If no information is available about the most recent
rejection of a Registration Request on a particular port
on a particular Fabric, then there will no entry in this
table for that port and Fabric.

When a t11NsRejectRegNotify notification is sent for
such a Registration Request failure, the values of the
objects in the relevant entry of this table are updated
immediately prior to generating the notification."
::= { t11NsStatus 4 }

t11NsRejectEntry OBJECT-TYPE
SYNTAX T11NsRejectEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry containing information about the most recent
rejection of a request to register information in the Name
Server Information Subset (identified by
t11NsInfoSubsetIndex) within the Fibre Channel management
instance (identified by fcmInstanceIndex) for a particular
port (identified by t11NsRegPortIdentifier) on a particular
Fabric (identified by t11NsRegFabricIndex)."
INDEX { fcmInstanceIndex, t11NsInfoSubsetIndex,
t11NsRegFabricIndex, t11NsRegPortIdentifier }
::= { t11NsRejectTable 1 }

T11NsRejectEntry ::= SEQUENCE {

DeSanti, et al. Standards Track [Page 26]

RFC 4438 Fibre Channel Name Server MIB April 2006

t11NsRejectCtCommandString OCTET STRING,
t11NsRejectReasonCode T11NsGs4RejectReasonCode,
t11NsRejReasonCodeExp T11NsRejReasonCodeExpl,
t11NsRejReasonVendorCode OCTET STRING
}

t11NsRejectCtCommandString OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The binary content of the Registration Request,
formatted as an octet string (in network byte
order) containing the CT_IU, as described in
Table 2 of [FC-GS-4] (including the preamble),
which was most recently rejected for the particular
Name Server Information Subset on the particular port
on the particular Fabric.

This object contains the zero-length string
if and when the CT-IU's content is unavailable.

When the length of this object is 255 octets, it
contains the first 255 octets of the CT-IU (in
network-byte order)."
::= { t11NsRejectEntry 1 }

t11NsRejectReasonCode OBJECT-TYPE
SYNTAX T11NsGs4RejectReasonCode
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A registration reject reason code. This object
contains the reason code of the most recent Name
Server Registration Request failure for the
particular port on the particular Fabric."
::= { t11NsRejectEntry 2 }

t11NsRejReasonCodeExp OBJECT-TYPE
SYNTAX T11NsRejReasonCodeExpl
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A registration reject reason code explanation. This
object contains the reason code explanation of the most
recent Name Server Registration Request failure for the
particular port on the particular Fabric."
::= { t11NsRejectEntry 3 }

DeSanti, et al. Standards Track [Page 27]

RFC 4438 Fibre Channel Name Server MIB April 2006

t11NsRejReasonVendorCode OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(1))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A registration reject vendor-specific code. This
object contains the vendor-specific code of the most
recent Name Server Registration Request failure for the
particular port on the particular Fabric."
::= { t11NsRejectEntry 4 }

--
-- Notifications
--

t11NsRejectRegNotify NOTIFICATION-TYPE
OBJECTS { t11FamLocalSwitchWwn,
t11NsRegPortName, t11NsRejectCtCommandString,
t11NsRejectReasonCode, t11NsRejReasonCodeExp,
t11NsRejReasonVendorCode }
STATUS current
DESCRIPTION
"This notification is generated whenever a request to
register information in a Name Server Information
Subset (for which the corresponding instance of
t11NsInfoSubsetRejReqNotfyEnable is 'true') is
rejected on a particular Fabric for a particular Nx_Port.

The value of t11FamLocalSwitchWwn indicates the
WWN of the switch that received the request.
(If the WWN is unavailable, the value is set to
the zero-length string.)

The value of t11NsRejectCtCommandString indicates
the rejected request, and the values of
t11NsRejectReasonCode, t11NsRejReasonCodeExp, and
t11NsRejReasonVendorCode indicate the reason for
the rejection.

The value of t11NsRegPortName represents the Port Name
if it is able to be extracted out of the Registration
Request, or otherwise the value as currently registered
on the port."
::= { t11NsNotifications 1 }

--
-- Conformance

DeSanti, et al. Standards Track [Page 28]

RFC 4438 Fibre Channel Name Server MIB April 2006

--

t11NsMIBCompliances OBJECT IDENTIFIER ::= {t11NsMIBConformance 1}
t11NsMIBGroups OBJECT IDENTIFIER ::= {t11NsMIBConformance 2}

t11NsMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for entities that
implement the Fibre Channel Name Server."
MODULE MANDATORY-GROUPS {t11NsDBGroup,
t11NsNotifyControlGroup,
t11NsNotifyGroup}

OBJECT t11NsInfoSubsetRejReqNotfyEnable
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

GROUP t11NsRequestStatsGroup
DESCRIPTION
"This group is mandatory only for an implementation
that captures statistics related to Name Server
requests."

GROUP t11NsRscnStatsGroup
DESCRIPTION
"This group is mandatory only for an implementation
that captures statistics related to Name
Server-related RSCNs."

GROUP t11NsRejectStatsGroup
DESCRIPTION
"This group is mandatory only for an implementation
that captures statistics related to Name Server
rejects."

::= { t11NsMIBCompliances 1 }

-- Units of conformance

t11NsDBGroup OBJECT-GROUP
OBJECTS { t11NsInfoSubsetSwitchIndex,
t11NsInfoSubsetTableLastChange,
t11NsInfoSubsetNumRows,
t11NsRegPortName,
t11NsRegNodeName,
t11NsRegClassOfSvc,

DeSanti, et al. Standards Track [Page 29]

RFC 4438 Fibre Channel Name Server MIB April 2006

t11NsRegNodeIpAddress,
t11NsRegProcAssoc,
t11NsRegFc4Type,
t11NsRegPortType,
t11NsRegPortIpAddress,
t11NsRegFabricPortName,
t11NsRegHardAddress,
t11NsRegSymbolicPortName,
t11NsRegSymbolicNodeName,
t11NsRegFc4Features,
t11NsRegFc4Descriptor }
STATUS current
DESCRIPTION
"A collection of objects for monitoring the information
registered in a Name Server Information Subset."
::= { t11NsMIBGroups 1 }

t11NsRequestStatsGroup OBJECT-GROUP
OBJECTS { t11NsInGetReqs,
t11NsOutGetReqs,
t11NsInRegReqs,
t11NsInDeRegReqs,
t11NsDatabaseFull}
STATUS current
DESCRIPTION
"A collection of objects for displaying Name
Server statistics and state for Name Server requests."
::= { t11NsMIBGroups 2 }

t11NsRscnStatsGroup OBJECT-GROUP
OBJECTS { t11NsInRscns,
t11NsOutRscns }
STATUS current
DESCRIPTION
"A collection of objects for displaying Name
Server statistics for Name Server-related RSCNs."
::= { t11NsMIBGroups 3 }

t11NsRejectStatsGroup OBJECT-GROUP
OBJECTS { t11NsInfoSubsetTotalRejects,
t11NsRejects }
STATUS current
DESCRIPTION
"A collection of objects for displaying Name
Server statistics for rejects."
::= { t11NsMIBGroups 4 }

t11NsNotifyControlGroup OBJECT-GROUP

DeSanti, et al. Standards Track [Page 30]

RFC 4438 Fibre Channel Name Server MIB April 2006

OBJECTS { t11NsRejectCtCommandString,
t11NsRejectReasonCode,
t11NsRejReasonCodeExp,
t11NsRejReasonVendorCode,
t11NsInfoSubsetRejReqNotfyEnable }
STATUS current
DESCRIPTION
"A collection of notification control and
notification information objects for monitoring
rejections of Name Server registrations."
::= { t11NsMIBGroups 5 }

t11NsNotifyGroup NOTIFICATION-GROUP
NOTIFICATIONS {t11NsRejectRegNotify }
STATUS current
DESCRIPTION
"A collection of notifications for monitoring
rejections of Name Server registrations."
::= { t11NsMIBGroups 6 }

END

7. Acknowledgements

This document began life as a work item of the INCITS Task Group
T11.5. We wish to acknowledge the many contributions and comments
from the INCITS Technical Committee T11, including the following:

T11 Chair: Robert Snively, Brocade
T11 Vice Chair: Claudio DeSanti, Cisco Systems
T11.5 Chair: Roger Cummings, Symantec
T11.5 members, especially:
Ken Hirata, Emulex
Scott Kipp, McData
Michael O'Donnell, McData
Elizabeth G. Rodriguez, Dot Hill
Steven L. Wilson, Brocade
Bob Nixon, Emulex

Thanks also to Orly Nicklass of RAD Data Communications, Bert Wijnen
of Lucent, and those members of the IMSS WG who provided review
comments.

DeSanti, et al. Standards Track [Page 31]

RFC 4438 Fibre Channel Name Server MIB April 2006

8. Normative References

[RFC2578] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Structure of Management Information Version 2 (SMIv2)",
STD 58, RFC 2578, April 1999.

[RFC2579] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Textual Conventions for SMIv2", STD 58, RFC 2579, April
1999.

[RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Conformance Statements for SMIv2", STD 58, RFC 2580,
April 1999.

[RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An
Architecture for Describing Simple Network Management
Protocol (SNMP) Management Frameworks", STD 62, RFC
3411, December 2002.

[FC-FS] "Fibre Channel - Framing and Signaling (FC-FS)" ANSI
INCITS 373-2003, April 2003.

[FC-GS-3] "Fibre Channel - Generic Services - 3 (FC-GS-3)", ANSI
INCITS 348-2000, November 2000.

[FC-GS-4] "Fibre Channel - Generic Services - 4 (FC-GS-4)", ANSI
INCITS 387-2004, February 2004.

[FC-SW-3] "Fibre Channel - Switch Fabric - 3 (FC-SW-3)", ANSI
INCITS 384-2004, June 2004.

[FC-SW-4] "Fibre Channel - Switch Fabric - 4 (FC-SW-4)", ANSI
INCITS 418-2006, 2006.

[FC-MGMT] McCloghrie, K., "Fibre Channel Management MIB", RFC
4044, May 2005.

[FC-FAM-MIB] DeSanti, C., Gaonkar, V., McCloghrie, K., and S. Gai,
"Fibre Channel Fabric Address Manager MIB", RFC 4439,
April 2006.

DeSanti, et al. Standards Track [Page 32]

RFC 4438 Fibre Channel Name Server MIB April 2006

9. Informative References

[RFC2741] Daniele, M., Wijnen, B., Ellison, M., and D. Francisco,
"Agent Extensibility (AgentX) Protocol Version 1", RFC
2741, January 2000.

[RFC2837] Teow, K., "Definitions of Managed Objects for the Fabric
Element in Fibre Channel Standard", RFC 2837, May 2000.

[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction and Applicability Statements for
Internet-Standard Management Framework", RFC 3410,
December 2002.

[IF-MIB] McCloghrie, K. and F. Kastenholz, "The Interfaces Group
MIB", RFC 2863, June 2000.

10. IANA Considerations

IANA has assigned a MIB OID to the T11-FC-NAME-SERVER-MIB module
under the appropriate subtree.

11. Security Considerations

There is one management object defined in this MIB module with 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.
This object and its sensitivity/vulnerability is:

t11NsInfoSubsetRejReqNotfyEnable -- the ability to enable/disable
notifications.

Such objects may be considered sensitive or vulnerable in some
network environments. For example, the ability to change network
topology or network speed may afford an attacker the ability to
obtain better performance at the expense of other network users. The
support for SET operations in a non-secure environment without proper
protection can have a negative effect on network operations.

Some of the readable objects in this MIB module (i.e., objects with a
MAX-ACCESS other than not-accessible) may be considered sensitive or
vulnerable in some network environments. It is thus important to
control even GET and/or NOTIFY access to these objects and possibly
to even encrypt the values of these objects when sending them over
the network via SNMP. These are the tables and objects and their
sensitivity/vulnerability:

DeSanti, et al. Standards Track [Page 33]

RFC 4438 Fibre Channel Name Server MIB April 2006

t11NsRegTable -- contains information about registered Nx_Ports.

t11NsStatsTable -- contains statistics and state information about
the Name Server.

SNMP versions prior to SNMPv3 did not include adequate security.
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 module.

It is RECOMMENDED that implementors consider the security features as
provided by the SNMPv3 framework (see [RFC3410], section 8),
including full support for the SNMPv3 cryptographic mechanisms (for
authentication and privacy).

Further, deployment of SNMP versions prior to SNMPv3 is NOT
RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to
enable cryptographic security. It is then a customer/operator
responsibility to ensure that the SNMP entity giving access to an
instance of this MIB module 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.

DeSanti, et al. Standards Track [Page 34]

RFC 4438 Fibre Channel Name Server MIB April 2006

Authors' Addresses

Claudio DeSanti
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134 USA

Phone: +1 408 853-9172
EMail: [email protected]

Vinay Gaonkar
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134 USA

Phone: +1 408 527-8576
EMail: [email protected]

H.K. Vivek
Cisco Systems, Inc.
71 Millers Rd
Bangalore, India

Phone: +91 80 2289933x5117
EMail: [email protected]

Keith McCloghrie
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA USA 95134

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

Silvano Gai
Retired

DeSanti, et al. Standards Track [Page 35]

RFC 4438 Fibre Channel Name Server MIB April 2006

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DeSanti, et al. Standards Track [Page 36]