Network Working Group C. DeSanti

Network Working Group C. DeSanti
Request for Comments: 4439 V. Gaonkar
Category: Standards Track K. McCloghrie
Cisco Systems
S. Gai
Retired
March 2006

Fibre Channel Fabric Address Manager 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 a Fibre Channel network's Fabric Address Manager.

DeSanti, et al. Standards Track [Page 1]

RFC 4439 Fibre Channel Fabric Address Manager MIB March 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 ......................................4
5. MIB Overview ....................................................5
5.1. Fibre Channel Management Instance ..........................5
5.2. Switch Index ...............................................5
5.3. Fabric Index ...............................................5
5.4. The t11FamGroup Group ......................................6
5.5. The t11FamDatabaseGroup Group ..............................6
5.6. The t11FamAreaGroup Group ..................................6
5.7. The t11FamCacheGroup Group .................................6
5.8. The t11FamCommandGroup Group ...............................6
5.9. The t11FamNotificationGroup Group ..........................6
5.10. Use of RCF and BF .........................................6
6. Definitions .....................................................8
6.1. The T11-TC-MIB Module ......................................8
6.2. The T11-FC-FABRIC-ADDR-MGR-MIB Module ......................9
7. Acknowledgements ...............................................35
8. Normative References ...........................................36
9. Informative References .........................................36
10. IANA Considerations ...........................................37
11. Security Considerations .......................................37

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 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 a Fibre Channel network's Fabric Address Manager. Fabric Address
Manager refers to the functionality of acquiring DomainID(s) as
specified in [FC-SW-3], and managing Fibre Channel Identifiers as
specified in [FC-FS].

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 4439 Fibre Channel Fabric Address Manager MIB March 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 dynamically 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.

Each switch in a Fabric is assigned one (or more) unique Domain_IDs
using a two-step process. First, one switch, called Principal
Switch, is selected from the switches of a Fabric. Then, the
Principal Switch assigns Domain_IDs to the other switches of the
Fabric. Address assignment within a domain is performed by the
switch to which that Domain_ID is granted.

4. Relationship to Other MIBs

The first standardized MIB for Fibre Channel [RFC2837] was focused on
Fibre Channel switches. It is being replaced 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. [FC-MGMT] includes the specification of how the generic
objects defined in [IF-MIB] apply to Fibre Channel interfaces.

Note that an interface's ifIndex value must be unique within an SNMP
context, irrespective of how many Fibre Channel management instances
(see below) and how many Fibre Channel switches are instrumented
within that SNMP context.

This document defines the T11-FC-FABRIC-ADDR-MGR-MIB module, which
extends beyond [FC-MGMT] to cover the functionality, in Fibre Channel
switches, which is used to manage Fabric configuration, domains, and
addresses within a domain.

This document also contains a MIB module, T11-TC-MIB, to define
textual conventions that might also be useful in other MIBs defined
by T11.

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

5. MIB Overview

This section explains the use of a Fibre Channel management instance,
a Switch Index, and a Fabric Index. It also describes the six MIB
groups contained in the MIB.

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 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 a Fibre Channel
management instance.

5.2. Switch Index

The FC-MGMT-MIB [FC-MGMT] defines the fcmSwitchTable as a table of
information about Fibre Channel switches that are managed by Fibre
Channel management instances. Each Fibre Channel management instance
can manage one or more Fibre Channel switches. The Switch Index,
fcmSwitchIndex, is IMPORTed from the FC-MGMT-MIB as the index value
to uniquely identify a Fibre Channel switch amongst those (one or
more) managed by the same Fibre Channel management instance.

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.

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

It is quite possible, and may even become likely, that (a port of) a
Fibre Channel switch will be connected to multiple such Fabrics.
Thus, in order to simplify a query concerning all the Fabrics to
which a single switch is connected, fcmSwitchIndex will be listed
before t11FamFabricIndex when they both appear in the same INDEX
clause.

5.4. The t11FamGroup Group

This group contains basic information about the Fabric Address
Manager functionality within a switch, including its configuration
parameters that are per-interface (i.e., specified for a particular
Fibre Channel interface identified by an ifIndex value).

5.5. The t11FamDatabaseGroup Group

This group contains information about which switches are assigned to
which domains.

5.6. The t11FamAreaGroup Group

This group contains information about which Port-IDs have been
assigned within the areas of the local domain.

5.7. The t11FamCacheGroup Group

This conditional mandatory group contains information about all the
FC address identifier assignments that have been recently released.
This cache is kept to support the concept of Preferred Domain_ID via
a best-effort attempt for (short-term) re-assignment of the same FC
address identifiers.

5.8. The t11FamCommandGroup Group

This optional group contains objects used for initiating an operation
on a Fabric.

5.9. The t11FamNotificationGroup Group

This group contains notifications of significant events concerning
the Fabric Address management functionality within a switch.

5.10. Use of RCF and BF

Included in [FC-SW-3] is the specification of Reconfigure Fabric
(RCF) and Build Fabric (BF), both of which are command codes of the
Switch Fabric Internal Link Service (SW_ILS). [FC-SW-3] includes the
warning:

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NOTE 13 - Since the RCF causes a complete reconfiguration of the
Fabric, and may cause addresses allocated to a Switch to change,
this SW_ILS should be used with caution. The BF SW_ILS allows the
Fabric to attempt reconfiguration without loss of or change of
address and therefore should be attempted before an RCF. Examples
of situations in which RCF may be appropriate include resolution
of overlapped Domains, or the failure of a Fabric Reconfiguration
initiated by a BF.

Further, [FC-MI] specifies:

A Fabric is prohibited from autonomously generating an RCF, but an
outside administrative function may request a switch to generate
an RCF. Such an administrative function is outside the scope of
this technical report.

The T11-FC-FABRIC-ADDR-MGR-MIB defined in this document is consistent
with both of the above quotes since it defines two objects,
t11FamAutoReconfigure and t11FamRestart, which are defined with a
MAX-ACCESS of read-write, and setting them to the appropriate value
is a means by which "an outside administrative function may request a
switch to generate an RCF" [FC-MI].

Note, however, the MIB specifies in its compliance section that the
minimum required level of support for these two objects is read-only.

Further, for both t11FamAutoReconfigure and t11FamRestart, the MIB
serves only as a request to generate; it does not represent the
action of the RCF or BF. That is, a successful SNMP SetRequest on
these objects will cause an RCF (or BF) to be sent, but SNMP does
not/cannot ensure the successful operation of the SW_ILS operation.

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

6. Definitions

6.1. The T11-TC-MIB Module

T11-TC-MIB DEFINITIONS ::= BEGIN

IMPORTS
MODULE-IDENTITY, Unsigned32, mib-2
FROM SNMPv2-SMI -- [RFC2578]
TEXTUAL-CONVENTION FROM SNMPv2-TC; -- [RFC2579]

t11TcMIB 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
"This module defines textual conventions used in T11 MIBs.

Copyright (C) The Internet Society (2006). This version
of this MIB module is part of RFC 4439; see the RFC
itself for full legal notices."
REVISION "200603020000Z"
DESCRIPTION
"Initial version of this MIB module, published as RFC 4439."
::= { mib-2 136 }

T11FabricIndex ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"A Fabric Index that is used as a unique
index value to identify a particular Fabric within
one (or more) physical infrastructures.

In an environment that is conformant to FC-SW-3, where

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

there is always exactly one Fabric in a single physical
infrastructure, the value of this Fabric Index will
always be 1.

However, the current standard, FC-SW-4, defines
how multiple Fabrics, each with its own management
instrumentation, could operate within one (or more)
physical infrastructures. When such multiple Fabrics
are in use, this index value is used to uniquely
identify a particular Fabric within a physical
infrastructure.

Note that the value of this textual convention has a
range of (0..4095) so as to be consistent with FC-SW-4,
which says that a 'VF_ID Bitmap' is 512 bytes long, with
the high-order bit representing VF_ID zero, and the
low-order bit representing 4095."
REFERENCE "Fibre Channel - Switch Fabric - 4 (FC-SW-4),
ANSI INCITS 418-2006, section 6.1.27.2.4."
SYNTAX Unsigned32 (0..4095)

END

6.2. The T11-FC-FABRIC-ADDR-MGR-MIB Module

T11-FC-FABRIC-ADDR-MGR-MIB DEFINITIONS ::= BEGIN

-- the Fibre Channel Fabric Address Manager MIB
--
-- for management of the functionality, in Fibre Channel switches,
-- which is used to manage fabric configuration, domains, and
-- addresses within a domain.
--

IMPORTS
MODULE-IDENTITY, OBJECT-TYPE,
NOTIFICATION-TYPE, Unsigned32,
Counter32, Gauge32, mib-2 FROM SNMPv2-SMI -- [RFC2578]
MODULE-COMPLIANCE, OBJECT-GROUP,
NOTIFICATION-GROUP FROM SNMPv2-CONF -- [RFC2580]
TEXTUAL-CONVENTION, TruthValue,
RowStatus FROM SNMPv2-TC -- [RFC2579]
ifIndex FROM IF-MIB -- [IF-MIB]
fcmInstanceIndex, fcmSwitchIndex,
FcDomainIdOrZero, FcNameIdOrZero FROM FC-MGMT-MIB -- [FC-MGMT]
T11FabricIndex FROM T11-TC-MIB;

t11FcFabricAddrMgrMIB MODULE-IDENTITY

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

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 Fabric Address management
functionality defined by the Fibre Channel standards. For
the purposes of this MIB, Fabric Address Manager refers to
the functionality of acquiring DomainID(s) as specified in
FC-SW-3, and managing Fibre Channel Identifiers as specified
in FC-FS. An instance of 'Fabric Address Manager' software
functionality executes in the Principal Switch, and in each
other switch.

After an agent reboot, the values of read-write objects
defined in this MIB module are implementation-dependent.

Copyright (C) The Internet Society (2006). This version of
this MIB module is part of RFC 4439; see the RFC itself for
full legal notices."
REVISION "200603020000Z"
DESCRIPTION
"Initial version of this MIB module, published as RFC 4439."
::= { mib-2 137 }

t11FamNotifications OBJECT IDENTIFIER ::= { t11FcFabricAddrMgrMIB 0 }
t11FamMIBObjects OBJECT IDENTIFIER ::= { t11FcFabricAddrMgrMIB 1 }
t11FamMIBConformance OBJECT IDENTIFIER ::= { t11FcFabricAddrMgrMIB 2 }
t11FamConfiguration OBJECT IDENTIFIER ::= { t11FamMIBObjects 1 }
t11FamInfo OBJECT IDENTIFIER ::= { t11FamMIBObjects 2 }
t11FamNotifyControl OBJECT IDENTIFIER ::= { t11FamMIBObjects 3 }

-- Textual Conventions

T11FamDomainPriority ::= TEXTUAL-CONVENTION

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DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"Priority of a switch.

The Principal Switch selection is influenced by the
priority of the switches.

Some values of importance are:

1 : The highest priority in Principal Switch
selection, which is used by the administrator
to establish which switch becomes the Principal
Switch.
255 : Indicates that the switch is not capable of
acting as a Principal Switch."
REFERENCE "Fibre Channel - Switch Fabric - 3 (FC-SW-3),
ANSI INCITS 384-2004, section 6.1.5."
SYNTAX Unsigned32 (1..255)

T11FamDomainInterfaceRole ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The 'designated' state/role of the Inter-Switch Link (ISL)
to which an interface connects, or (if not connected)
the state of the interface:

nonPrincipal (1) - non-Principal ISL
principalUpstream (2) - Upstream Principal ISL
principalDownsteam (3) - Downstream Principal ISL
isolated (4) - interface is isolated
down (5) - interface is down
unknown (6) - state/role is unknown
"
REFERENCE "Fibre Channel - Switch Fabric - 3 (FC-SW-3),
ANSI INCITS 384-2004, Sections 3.1, 5.7,
and Figure 9."
SYNTAX INTEGER {
nonPrincipal (1),
principalUpstream (2),
principalDownsteam (3),
isolated (4),
down (5),
unknown (6)
}

T11FamState ::= TEXTUAL-CONVENTION
STATUS current

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DESCRIPTION
"The state of the Fabric Address Manager, as described in
Table 86 and Figure 15 of FC-SW-3.

- 'other' represents a switch that is in a state not
represented by any of the below enumerations.

- 'starting' represents a switch engaged in the process
represented by the first row in Table 86.

- 'unconfigured' represents a switch that requires
operator input before it can begin the process
represented by the first row in Table 86.

- 'principalSwitchSelection' represents a switch engaged
in the process represented by the second row in
Table 86, but not in states F0 or F1 of Figure 15.

- 'domainIdDistribution' represents a switch engaged in
the process represented by the third row in Table 86.

- 'buildFabricPhase' represents a switch that is in
state F0 of Figure 15.

- 'reconfigureFabricPhase' represents a switch that is
in state F1 of Figure 15.

- 'stable' represents a switch that has successfully
completed the process represented by the third row in
Table 86 and has at least one E_Port.

- 'stableWithNoEports' represents a switch that has
successfully completed the process represented by the
third row in Table 86 but has no E_Ports.

- 'noDomains' represents a switch that has completed
the process represented by the third row in Table 86
but failed to obtain a Domain_ID.

- 'disabled' represents any situation in which the
corresponding instance of t11FamEnable has the value
'false'.

- 'unknown' represents a switch that is confused about
what state it is in."
REFERENCE "Fibre Channel - Switch Fabric - 3 (FC-SW-3),
ANSI INCITS 384-2004, Table 86 and Figure 15."
SYNTAX INTEGER {

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

other(1),
starting(2),
unconfigured(3),
principalSwitchSelection(4),
domainIdDistribution(5),
buildFabricPhase(6),
reconfigureFabricPhase(7),
stable(8),
stableWithNoEports(9),
noDomains(10),
disabled(11),
unknown(12)
}

--
-- t11FamTable
--

t11FamTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11FamEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains Fabric Address Manager related
parameters that are able to be configured and monitored
in a Fibre Channel switch. For each of the switches
(identified by fcmSwitchIndex) managed by a Fibre Channel
management instance (identified by fcmInstanceIndex),
there is any entry for each Fabric known to that switch.
Entries are implicitly created/removed if and when
additional Fabrics are created/deleted."
::= { t11FamConfiguration 1 }

t11FamEntry OBJECT-TYPE
SYNTAX T11FamEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry provides information on the local Fabric Address
Manager functionality for a Fabric known to a
particular switch."
INDEX { fcmInstanceIndex, fcmSwitchIndex, t11FamFabricIndex }
::= { t11FamTable 1 }

T11FamEntry ::= SEQUENCE {
t11FamFabricIndex T11FabricIndex,
t11FamConfigDomainId FcDomainIdOrZero,

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t11FamConfigDomainIdType INTEGER,
t11FamAutoReconfigure TruthValue,
t11FamContiguousAllocation TruthValue,
t11FamPriority T11FamDomainPriority,
t11FamPrincipalSwitchWwn FcNameIdOrZero,
t11FamLocalSwitchWwn FcNameIdOrZero,
t11FamAssignedAreaIdList OCTET STRING,
t11FamGrantedFcIds Counter32,
t11FamRecoveredFcIds Counter32,
t11FamFreeFcIds Gauge32,
t11FamAssignedFcIds Gauge32,
t11FamAvailableFcIds Gauge32,
t11FamRunningPriority T11FamDomainPriority,
t11FamPrincSwRunningPriority T11FamDomainPriority,
t11FamState T11FamState,
t11FamLocalPrincipalSwitchSlctns Counter32,
t11FamPrincipalSwitchSelections Counter32,
t11FamBuildFabrics Counter32,
t11FamFabricReconfigures Counter32,
t11FamDomainId FcDomainIdOrZero,
t11FamSticky TruthValue,
t11FamRestart INTEGER,
t11FamRcFabricNotifyEnable TruthValue,
t11FamEnable TruthValue,
t11FamFabricName FcNameIdOrZero
}

t11FamFabricIndex OBJECT-TYPE
SYNTAX T11FabricIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique index value that uniquely identifies a
particular Fabric known to a particular switch.

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

However, the current standard, FC-SW-4, defines
how multiple Fabrics, each with its own management
instrumentation, could operate within one (or more)
physical infrastructures. When such multiple Fabrics
are in use, this index value is used to uniquely
identify a particular Fabric within a physical
infrastructure."
::= { t11FamEntry 1 }

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

t11FamConfigDomainId OBJECT-TYPE
SYNTAX FcDomainIdOrZero
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The configured Domain_ID of the particular switch on this
Fabric, or zero if no Domain_ID has been configured.
The meaning of this object depends on
t11FamConfigDomainIdType object.

If t11FamConfigDomainIdType is 'preferred', then the
configured Domain_ID is called the 'preferred Domain_ID'.
Valid values are between 0 and 239. In a situation where
this Domain_ID cannot be assigned, any other Domain_ID
will be acceptable. A value of zero means any Domain_ID.

If t11FamConfigDomainIdType is 'insistent', then the
configured Domain_ID is called the 'insistent Domain_ID' and
valid values are between 1 and 239. In a situation where
this Domain_ID cannot be assigned, no other Domain_ID is
acceptable.

In both of the above cases, the switch sends an RDI (Request
Domain_ID) to request this Domain_ID to the Principal
Switch. If no Domain_ID is able to be granted in the case
of 'preferred', or if an 'insistent' Domain_ID is configured
but not able to be granted, then it is an error condition.
When this error occurs, the switch will continue as if it
receives a SW_RJT with a reason/explanation of 'Unable to
perform command request'/'Domain_ID not available'. That
is, its E_Ports on that Fabric will be isolated and the
administrator informed via a 't11FamDomainIdNotAssigned'
notification.

If t11FamConfigDomainIdType is 'static', then the configured
Domain_ID is called the 'static Domain_ID' and valid values
are between 1 and 239. In this situation, there is no
Principal Switch in the Fabric and the Domain_ID is simply
assigned by configuration, together with the Fabric_Name.
A switch configured with a static Domain_ID, on receiving
an EFP, BF, RCF, DIA, or RDI SW_ILS, shall reply with an
SW_RJT having Reason Code Explanation 'E_Port is Isolated'
and shall isolate the receiving E_Port.

For the persistence of values across reboots, see the
MODULE-IDENTITY's DESCRIPTION clause."
REFERENCE "Fibre Channel - Switch Fabric - 4 (FC-SW-4),
ANSI INCITS 418-2006, section 7."

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

DEFVAL { 0 }
::= { t11FamEntry 2 }

t11FamConfigDomainIdType OBJECT-TYPE
SYNTAX INTEGER {
preferred(1),
insistent(2),
static(3)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Type of configured Domain_ID contained in
t11FamConfigDomainId.

For the persistence of values across reboots, see the
MODULE-IDENTITY's DESCRIPTION clause."
DEFVAL { preferred }
::= { t11FamEntry 3 }

t11FamAutoReconfigure OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object determines how a particular switch
responds to certain error conditions.

The condition that might cause these errors is
the merging of two disjoint Fabrics that have
overlapping Domain_ID lists.

If value of this object is 'true', the switch will
send an RCF (ReConfigureFabric) to rebuild the
Fabric.

If 'false', the switch will isolate the E_Ports on
which the errors happened.

For the persistence of values across reboots, see the
MODULE-IDENTITY's DESCRIPTION clause."
REFERENCE "Fibre Channel - Switch Fabric - 3 (FC-SW-3),
December 2003, sections 6.1.12 & 7.3.
Fibre Channel - Methodologies for Interconnects
(FC-MI), INCITS TR-30-2002, table 14, note g."
DEFVAL { false }
::= { t11FamEntry 4 }

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

t11FamContiguousAllocation OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Determines how a particular switch behaves when elected as
the Principal Switch.

If true, the switch will only accept RDIs with a contiguous
allocation; specifically, it will reject RDIs with
non-contiguous Domain_IDs, and if an RDI for a contiguous
Domain_ID is not able to be fulfilled, it will try to
replace all the Domain_IDs in the list with contiguous
Domain_IDs, and if that fails, the RDI will be rejected.

If false, then the switch acts normally in granting
the Domain_IDs even if they are not contiguous.

For the persistence of values across reboots, see the
MODULE-IDENTITY's DESCRIPTION clause."
::= { t11FamEntry 5 }

t11FamPriority OBJECT-TYPE
SYNTAX T11FamDomainPriority
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The initial or configured priority of a particular switch
to be used in Principal Switch selection process.

For the persistence of values across reboots, see the
MODULE-IDENTITY's DESCRIPTION clause."
::= { t11FamEntry 6 }

t11FamPrincipalSwitchWwn OBJECT-TYPE
SYNTAX FcNameIdOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The WWN of the Principal Switch on this Fabric,
or zero-length string if the identity of the principal
switch is unknown."
DEFVAL { ''H }
::= { t11FamEntry 7 }

t11FamLocalSwitchWwn OBJECT-TYPE
SYNTAX FcNameIdOrZero
MAX-ACCESS read-only

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

STATUS current
DESCRIPTION
"The WWN of the particular switch on this Fabric."
::= { t11FamEntry 8 }

t11FamAssignedAreaIdList OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..256))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The list of (zero or more) Area_IDs that have been
assigned by a particular switch in this Fabric, formatted
as an array of octets in ascending order.

Each octet represents one Area_ID. So, the list containing
Area_IDs 23, 45, 235, and 56 would be formatted as the
4-octet string x'172d38eb'.

A particular area's Area_ID is used as the index into the
t11FamAreaTable to get the statistics on that area."
::= { t11FamEntry 9 }

t11FamGrantedFcIds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of Fibre Channel Address Identifiers
granted (for local use, i.e., with a particular switch's
Domain_ID) by the Fabric Address Manager on that switch.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11FamEntry 10 }

t11FamRecoveredFcIds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of Fibre Channel Address Identifiers that
have been recovered by the Fabric Address Manager on a
particular switch since the switch has been initialized.
A recovered Fibre Channel Address Identifier is one that is
explicitly returned after previously being used.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

::= { t11FamEntry 11 }

t11FamFreeFcIds OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Fibre Channel Address Identifiers that are
currently unassigned on this Fabric and could be available
for assignment either immediately or at some later time.

The sum of the instances of FreeFcIds and AssignedFcIds
corresponding to a particular Fabric is the total number of
Fibre Channel Address Identifiers that the local Fabric
Address Management is capable of assigning on that Fabric."
::= { t11FamEntry 12 }

t11FamAssignedFcIds OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Fibre Channel Address Identifiers that are
currently assigned on this Fabric.

The sum of the instances of FreeFcIds and AssignedFcIds
corresponding to a particular Fabric is the total number of
Fibre Channel Address Identifiers that the local Fabric
Address Management is capable of assigning on that Fabric."
::= { t11FamEntry 13 }

t11FamAvailableFcIds OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Fibre Channel Address Identifiers that are
unassigned and currently available for immediate assignment
on the Fabric, e.g., with the 'Clean Address' bit set to 1."
REFERENCE
"Fibre Channel - Framing and Signaling (FC-FS),
ANSI INCITS 373-2003, section 15.6.2.4.2."
::= { t11FamEntry 14 }

t11FamRunningPriority OBJECT-TYPE
SYNTAX T11FamDomainPriority
MAX-ACCESS read-only
STATUS current

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DESCRIPTION
"The running priority of a particular switch on this Fabric.
This value is initialized to the value of t11FamPriority,
and subsequently altered as specified by the procedures
defined in FC-SW-3."
::= { t11FamEntry 15 }

t11FamPrincSwRunningPriority OBJECT-TYPE
SYNTAX T11FamDomainPriority
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The running priority of the Principal Switch on this
Fabric."
::= { t11FamEntry 16 }

t11FamState OBJECT-TYPE
SYNTAX T11FamState
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The state of the Fabric Address Manager on a particular
switch on this Fabric."
::= { t11FamEntry 17 }

t11FamLocalPrincipalSwitchSlctns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times a particular switch became the
Principal Switch on this Fabric.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11FamEntry 18 }

t11FamPrincipalSwitchSelections OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Principal Switch selections on this Fabric.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11FamEntry 19 }

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

t11FamBuildFabrics OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of non-disruptive fabric reconfigurations (BFs)
that have occurred on this Fabric.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11FamEntry 20 }

t11FamFabricReconfigures OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of disruptive fabric reconfigurations (RCFs)
that have occurred on this Fabric.

This counter has no discontinuities other than those
that all Counter32s have when sysUpTime=0."
::= { t11FamEntry 21 }

t11FamDomainId OBJECT-TYPE
SYNTAX FcDomainIdOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Domain_ID of a particular switch on this Fabric or
zero if no Domain_ID has been assigned."
::= { t11FamEntry 22 }

t11FamSticky OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An indication of whether a particular switch is supporting
the concept of Preferred Domain_IDs via a best-effort
attempt to re-assign the same Fibre Channel Address
Identifier value to a port on the next occasion when a port
requests an assignment on this Fabric.

If the value of this object is 'true', then the switch is
maintaining rows in the t11FamFcIdCacheTable for this
Fabric."
::= { t11FamEntry 23 }

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

t11FamRestart OBJECT-TYPE
SYNTAX INTEGER {
nonDisruptive(1),
disruptive(2),
noOp(3)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object tells the Fabric Address Manager to
request a Fabric reconfiguration.

If this object is set to 'disruptive', then an RCF
(ReConfigure Fabric) is generated in the Fabric
in order for the Fabric to recover from the errors.

If this object is set to 'nonDisruptive', then a
BF (Build Fabric) is generated in the Fabric.

No action is taken if this object is set to 'noOp'.
The value of the object when read is always 'noOp'.

For the persistence of values across reboots, see the
MODULE-IDENTITY's DESCRIPTION clause."
REFERENCE "Fibre Channel - Switch Fabric - 3 (FC-SW-3),
ANSI INCITS 384-2004, section 7.3."
::= { t11FamEntry 24 }

t11FamRcFabricNotifyEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"An indication of whether or not a particular switch
should issue a t11FamFabricChangeNotify notification on
sending or receiving ReConfigureFabric (RCF) on a Fabric.

If the value of the object is 'true', then the
notification is generated. If the value is 'false',
notification is not generated.

If an implementation requires all Fabrics to have the
same value, then setting one instance of this object
to a new object will result in all corresponding
instances being set to that same new value.

For the persistence of values across reboots, see the
MODULE-IDENTITY's DESCRIPTION clause."

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DEFVAL { false }
::= { t11FamEntry 25 }

t11FamEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Enables the Fabric Address Manager on this switch
on this Fabric.

If enabled on a Fabric, the switch will participate in
Principal Switch selection, and Domain_IDs are assigned
dynamically. If disabled, the switch will not participate
in Principal Switch selection, and Domain_IDs are
assigned statically. Thus, the corresponding value of
t11FamConfigDomainIdType needs to be 'static'.

For the persistence of values across reboots, see the
MODULE-IDENTITY's DESCRIPTION clause."
REFERENCE "Fibre Channel - Switch Fabric - 4 (FC-SW-4),
ANSI INCITS 418-2006, sections 7.1 and 7.3."
DEFVAL { true }
::= { t11FamEntry 26 }

t11FamFabricName OBJECT-TYPE
SYNTAX FcNameIdOrZero
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The WWN that is configured on this switch to be used as
the name of this Fabric when the value of t11FamEnable is
'false'.

If the value of t11FamEnable is 'true', this value is not
used.

Fibre Channel requires that:
a) all switches in an operational Fabric be
configured with the same Fabric name; and
b) each Fabric have a unique Fabric name.
If either of these is violated, either by switches within a
single Fabric being configured with different Fabric names,
or by multiple Fabrics that share management applications
or interact in other ways having the same Fabric name,
then the behavior of the switches and associated management
functions is not specified by Fibre Channel or Internet
standards.

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

For the persistence of values across reboots, see the
MODULE-IDENTITY's DESCRIPTION clause."
REFERENCE "Fibre Channel - Switch Fabric - 4 (FC-SW-4),
ANSI INCITS 418-2006, section 7.1."
::= { t11FamEntry 27 }

--
-- t11FamIfTable - Interface configuration
--

t11FamIfTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11FamIfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains those Fabric Address Manager parameters
and status values that are per-interface (identified
by an ifIndex value), per-Fabric (identified by a
t11FamFabricIndex value), and per-switch (identified by
values of fcmInstanceIndex and fcmSwitchIndex).

An entry in this table is automatically created when
an E_Port becomes non-isolated on a particular Fabric.

An entry is deleted automatically from this table if:
a) the corresponding interface is no longer an E_Port (e.g.,
a G_Port that is dynamically determined to be an F_Port),
and all configuration parameter(s) have default values; or
b) the interface identified by ifIndex no longer exists
(e.g., because a line-card is physically removed); or
c) the row in the t11FamTable corresponding the fabric
identified by t11FamFabricID no longer exists.

Creating an entry in this table via t11FamIfRowStatus
provides the means to specify non-default parameter value(s)
for an interface at a time when the relevant row in this
table does not exist, i.e., because the interface is either
down or it is not an E_Port."
::= { t11FamConfiguration 2 }

t11FamIfEntry OBJECT-TYPE
SYNTAX T11FamIfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry containing information on the interface
configuration on the Fabric identified by

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

t11FamFabricIndex."
INDEX { fcmInstanceIndex, fcmSwitchIndex,
t11FamFabricIndex, ifIndex}
::= { t11FamIfTable 1 }

T11FamIfEntry ::= SEQUENCE {
t11FamIfRcfReject TruthValue,
t11FamIfRole T11FamDomainInterfaceRole,
t11FamIfRowStatus RowStatus
}

t11FamIfRcfReject OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object determines if the incoming ReConfigure
Fabric (RCF) messages on this interface on this
Fabric is accepted or not. If this object is 'true', then
the incoming RCF is rejected. If 'false', incoming RCF is
accepted.

Note that this object does not apply to the outgoing
RCFs generated by this interface.

Implementations that support write-access to this object
can do so under whatever conditions they choose."
DEFVAL {false}
::= { t11FamIfEntry 1 }

t11FamIfRole OBJECT-TYPE
SYNTAX T11FamDomainInterfaceRole
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The role of this interface."
::= { t11FamIfEntry 2 }

t11FamIfRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row."
::= { t11FamIfEntry 3 }

--

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-- t11FamAreaTable
--

t11FamAreaTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11FamAreaEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains area assignments per-Fabric by a
switch's Fabric Address Manager. Each octet in
t11FamAssignedAreaList is able to be used to index into
this table to find information on each area."
REFERENCE "Fibre Channel - Switch Fabric - 3 (FC-SW-3),
ANSI INCITS 384-2004, section 4.8."
::= { t11FamInfo 1 }

t11FamAreaEntry OBJECT-TYPE
SYNTAX T11FamAreaEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry gives information on the Area_ID and all
Port_IDs that have been assigned within an area for
the Fabric identified by t11FamFabricIndex, by the
Fabric Address Manager in the switch identified by
fcmInstanceIndex and fcmSwitchIndex."
INDEX { fcmInstanceIndex, fcmSwitchIndex,
t11FamFabricIndex, t11FamAreaAreaId}
::= { t11FamAreaTable 1 }

T11FamAreaEntry ::= SEQUENCE {
t11FamAreaAreaId Unsigned32,
t11FamAreaAssignedPortIdList OCTET STRING
}

t11FamAreaAreaId OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Area_ID of this area."
::= { t11FamAreaEntry 1 }

t11FamAreaAssignedPortIdList OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..256))
MAX-ACCESS read-only
STATUS current
DESCRIPTION

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

"The list of Port_IDs which have been assigned in
this area and Fabric, formatted as an array of
octets in ascending order. There could be zero or more
Port_IDs assigned on this area and Fabric.

Each octet represents one Port_ID. So, the list containing
the Port_IDs 23, 45, 235, and 56 would be formatted as the
4-octet string x'172d38eb'."
::= { t11FamAreaEntry 2 }

--
-- t11FamDatabaseTable
--

t11FamDatabaseTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11FamDatabaseEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains all information known by
a switch about all the domains that have been
assigned in each Fabric."
REFERENCE "Fibre Channel - Switch Fabric - 3 (FC-SW-3),
ANSI INCITS 384-2004, section 4.8."
::= { t11FamInfo 2 }

t11FamDatabaseEntry OBJECT-TYPE
SYNTAX T11FamDatabaseEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the t11FamDatabaseTable
containing information about one Domain_ID in the
Fabric identified by t11FamFabricIndex, and known by
the switch identified by t11FamFabricIndex and
t11FamDatabaseDomainId."
INDEX { fcmInstanceIndex, fcmSwitchIndex,
t11FamFabricIndex , t11FamDatabaseDomainId}
::= { t11FamDatabaseTable 1 }

T11FamDatabaseEntry ::= SEQUENCE {
t11FamDatabaseDomainId FcDomainIdOrZero,
t11FamDatabaseSwitchWwn FcNameIdOrZero
}

t11FamDatabaseDomainId OBJECT-TYPE
SYNTAX FcDomainIdOrZero (1..239)

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MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Domain_ID for which this row contains information.
The value must be non-zero."
::= { t11FamDatabaseEntry 1 }

t11FamDatabaseSwitchWwn OBJECT-TYPE
SYNTAX FcNameIdOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The node name (WWN) of the switch to which the
corresponding value of t11FamDatabaseDomainId is currently
assigned for the particular Fabric."
::= { t11FamDatabaseEntry 2 }

--
-- Fibre Channel Address Identifier cache information
--
-- The cached information allows the Fabric Address Manager to
-- implement the concept of a Preferred Domain_ID, whereby after a port
-- releases a Fibre Channel Address Identifier value, a switch makes an
-- attempt to re-assign the same Fibre Channel Address Identifier value
-- on the next occasion when that port requests an assignment.
--

t11FamMaxFcIdCacheSize OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of Fibre Channel Address Identifiers
that are able to be cached in the t11FamFcIdCacheTable.
If the number is unknown, the value of this object is
zero."
::= { t11FamInfo 3 }

--
-- t11FamFcIdCacheTable
--

t11FamFcIdCacheTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11FamFcIdCacheEntry
MAX-ACCESS not-accessible
STATUS current

DeSanti, et al. Standards Track [Page 28]

RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

DESCRIPTION
"This table contains all the Fibre Channel Address
Identifiers that have recently been released by the
Fabric Address Manager in a switch. So, it lists
all the Fibre Channel Address Identifiers that have valid
WWN-to-Fibre Channel Address Identifier mappings and are
currently not assigned to any ports. These Fibre Channel
Address Identifiers were assigned to ports but have since
been released. These cached Fibre Channel Address
Identifiers contain only Area_ID and Port_ID information.
This cache is kept to provide best-effort re-assignment of
same Fibre Channel Address Identifiers; i.e., when an
Nx_Port asks for a Fibre Channel Address Identifier, soon
after releasing one, the same value is re-assigned, if
possible."
::= { t11FamInfo 4 }

t11FamFcIdCacheEntry OBJECT-TYPE
SYNTAX T11FamFcIdCacheEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the t11FamFcIdCacheTable
containing information about one Fibre Channel Address
Identifier that was released from a WWN, corresponding to a
range of one or more ports connected to the switch
(identified by t11FamFabricIndex and t11FamFcIdCacheWwn) in
the Fabric (identified by t11FamFabricIndex). An entry is
created when a Fibre Channel Address Identifier is released
by the last port in the range. The oldest entry is deleted
if the number of rows in this table reaches
t11FamMaxFcIdCacheSize, and its space is required for a new
entry. An entry is also deleted when its Fibre Channel
Address Identifier is assigned to a port."
INDEX { fcmInstanceIndex, fcmSwitchIndex,
t11FamFabricIndex, t11FamFcIdCacheWwn}
::= { t11FamFcIdCacheTable 1 }

T11FamFcIdCacheEntry ::= SEQUENCE {
t11FamFcIdCacheWwn FcNameIdOrZero,
t11FamFcIdCacheAreaIdPortId OCTET STRING,
t11FamFcIdCachePortIds Unsigned32
}

t11FamFcIdCacheWwn OBJECT-TYPE
SYNTAX FcNameIdOrZero
MAX-ACCESS not-accessible
STATUS current

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

DESCRIPTION
"The N_Port_Name (WWN) of the port associated with this
entry."
::= { t11FamFcIdCacheEntry 1 }

t11FamFcIdCacheAreaIdPortId OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (2))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The combination of this object and t11FamFcIdCachePortIds
represent one range of Fibre Channel Address Identifiers,
which were assigned and later released. This object
contains the Area_ID and Port_ID of the first Fibre
Channel Address Identifier in the range.

Note that this object is only 2 bytes."
::= { t11FamFcIdCacheEntry 2 }

t11FamFcIdCachePortIds OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The combination of t11FamFcIdCacheAreaIdPortId and this
object represent one range of Fibre Channel Address
Identifiers, which were assigned and later released. This
object contains the number of (consecutive) Fibre Channel
Address Identifiers in the range."
::= { t11FamFcIdCacheEntry 3 }

-- Objects for use in notifications

t11FamNotifyFabricIndex OBJECT-TYPE
SYNTAX T11FabricIndex
MAX-ACCESS accessible-for-notify
STATUS current
DESCRIPTION
"A unique index value that identifies a particular
Fabric for which a particular notification is generated.

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

However, the current standard, FC-SW-4, defines
how multiple Fabrics, each with its own management

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

instrumentation, could operate within one (or more)
physical infrastructures. In order to accommodate this
scenario, this index value is used to uniquely identify a
particular Fabric within a physical infrastructure."
::= { t11FamNotifyControl 1 }

-- Notifications

t11FamDomainIdNotAssignedNotify NOTIFICATION-TYPE
OBJECTS { t11FamLocalSwitchWwn, t11FamNotifyFabricIndex }
STATUS current
DESCRIPTION
"This notification indicates that a Domain_ID has not
been configured or assigned for a particular Fabric,
identified by t11FamNotifyFabricIndex, on a particular
switch identified by t11FamLocalSwitchWwn. This could
happen under the following conditions, and results in the
switch isolating E_Ports on the Fabric:

- if the switch's request for a configured static
Domain_ID is rejected or no other Domain_ID is
assigned, then the E_Ports are isolated."
::= { t11FamNotifications 1 }

t11FamNewPrincipalSwitchNotify NOTIFICATION-TYPE
OBJECTS { t11FamLocalSwitchWwn, t11FamNotifyFabricIndex }
STATUS current
DESCRIPTION
"This notification indicates that a particular switch,
identified by t11FamLocalSwitchWwn, has become the new
Principal Switch on the Fabric identified by
t11FamNotifyFabricIndex.

This notification is sent soon after its election as
the new Principal Switch, i.e., upon expiration of a
Principal Switch selection timer that is equal to
twice the Fabric Stability Timeout value (F_S_TOV)."
::= { t11FamNotifications 2 }

t11FamFabricChangeNotify NOTIFICATION-TYPE
OBJECTS { t11FamLocalSwitchWwn, t11FamNotifyFabricIndex }
STATUS current
DESCRIPTION
"This notification is sent whenever a particular switch,
identified by t11FamLocalSwitchWwn, sends or
receives a Build Fabric (BF) or a ReConfigure Fabric
(RCF) message on the Fabric identified by

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

t11FamNotifyFabricIndex.

This notification is not sent if a
't11FamNewPrincipalSwitchNotify' notification is sent
for the same event."
::= { t11FamNotifications 3 }

--
-- Conformance
--

t11FamMIBCompliances OBJECT IDENTIFIER ::= { t11FamMIBConformance 1 }
t11FamMIBGroups OBJECT IDENTIFIER ::= { t11FamMIBConformance 2 }

t11FamMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for Fibre Channel switches
that implement Fabric Address Manager functionality."
MODULE
MANDATORY-GROUPS { t11FamGroup,
t11FamDatabaseGroup,
t11FamAreaGroup,
t11FamNotificationGroup
}

OBJECT t11FamConfigDomainId
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT t11FamConfigDomainIdType
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT t11FamAutoReconfigure
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT t11FamContiguousAllocation
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT t11FamPriority

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

OBJECT t11FamIfRcfReject
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT t11FamIfRowStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT t11FamRcFabricNotifyEnable
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

GROUP t11FamCacheGroup
DESCRIPTION
"This group is mandatory only for switches that
support the concept of Preferred Domain_ID via a best-
effort attempt for (short-term) re-assignment of the
same FC address identifiers."

GROUP t11FamCommandGroup
DESCRIPTION
"This group is optional."

::= { t11FamMIBCompliances 1 }

-- Units of Conformance

t11FamGroup OBJECT-GROUP
OBJECTS { t11FamConfigDomainId,
t11FamConfigDomainIdType,
t11FamAutoReconfigure,
t11FamContiguousAllocation,
t11FamPriority,
t11FamPrincipalSwitchWwn,
t11FamLocalSwitchWwn,
t11FamAssignedAreaIdList,
t11FamGrantedFcIds,
t11FamRecoveredFcIds,
t11FamFreeFcIds,
t11FamAssignedFcIds,

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

t11FamAvailableFcIds,
t11FamRunningPriority,
t11FamPrincSwRunningPriority,
t11FamState,
t11FamLocalPrincipalSwitchSlctns,
t11FamPrincipalSwitchSelections,
t11FamBuildFabrics,
t11FamFabricReconfigures,
t11FamDomainId,
t11FamSticky,
t11FamRestart,
t11FamRcFabricNotifyEnable,
t11FamEnable,
t11FamFabricName,
t11FamIfRcfReject,
t11FamIfRole,
t11FamIfRowStatus,
t11FamNotifyFabricIndex
}
STATUS current
DESCRIPTION
"A collection of general objects for displaying and
configuring Fabric Address management."
::= { t11FamMIBGroups 1 }

t11FamCommandGroup OBJECT-GROUP
OBJECTS { t11FamRestart }
STATUS current
DESCRIPTION
"A collection of objects used for initiating an
operation on the Fabric."
::= { t11FamMIBGroups 2 }

t11FamDatabaseGroup OBJECT-GROUP
OBJECTS { t11FamDatabaseSwitchWwn }
STATUS current
DESCRIPTION
"A collection of objects containing information about
Domain-IDs assignments."
::= { t11FamMIBGroups 3 }

t11FamAreaGroup OBJECT-GROUP
OBJECTS { t11FamAreaAssignedPortIdList }
STATUS current
DESCRIPTION
"A collection of objects containing information about
currently assigned addresses within a domain."
::= { t11FamMIBGroups 4 }

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

t11FamCacheGroup OBJECT-GROUP
OBJECTS { t11FamMaxFcIdCacheSize,
t11FamFcIdCacheAreaIdPortId,
t11FamFcIdCachePortIds
}
STATUS current
DESCRIPTION
"A collection of objects containing information about
recently-released Fibre Channel Address Identifiers."
::= { t11FamMIBGroups 5 }

t11FamNotificationGroup NOTIFICATION-GROUP
NOTIFICATIONS { t11FamDomainIdNotAssignedNotify,
t11FamNewPrincipalSwitchNotify,
t11FamFabricChangeNotify }
STATUS current
DESCRIPTION
"A collection of notifications for status monitoring
and notification."
::= { t11FamMIBGroups 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

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

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 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.

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

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

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

9. Informative References

[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.

[FC-MI] "Fibre Channel - Methodologies for Interconnects (FC-MI)",
INCITS TR-30-2002, November 2002.

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

10. IANA Considerations

IANA has made two MIB OID assignments, one for the T11-TC-MIB module
and one for the T11-FC-FABRIC-ADDR-MGR-MIB module, under the
appropriate subtree(s).

11. Security Considerations

There are a number of management objects 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. These are the tables and objects and their
sensitivity/vulnerability:

t11FamConfigDomainId, t11FamConfigDomainIdType and
t11FamContiguousAllocation -- ability to change the address
allocation policy.

t11FamRestart and t11FamAutoReconfigure -- ability to cause a
fabric reconfiguration, e.g., on certain error conditions.

t11FamPriority -- ability to affect which switch becomes the
Principal Switch.

t11FamRcFabricNotifyEnable -- ability to enable/disable a
notification.

t11FamIfRcfReject -- ability to change the switch's behavior on
receipt of an RCF.

t11FamIfRowStatus -- ability to change an interface
configuration parameter.

Some of the readable objects in this MIB module (i.e., objects with a
MAX-ACCESS other than not-accessible) may also 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:

t11FamTable and t11FamIfTable -- contain the configuration,
status, and statistics of the Fabric Address Manager.

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t11FamAreaTable, t11FamDatabaseTable and t11FamFcIdCacheTable
-- contain information on currently assigned or recently-
released addresses.

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.

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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]

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

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RFC 4439 Fibre Channel Fabric Address Manager MIB March 2006

Full Copyright Statement

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contained in BCP 78, and except as set forth therein, the authors
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