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RFC 4625

Fibre Channel Routing Information MIB

Pages: 22
Proposed Standard

Top   ToC   RFC4625 - Page 1
Network Working Group                                         C. DeSanti
Request for Comments: 4625                                 K. McCloghrie
Category: Standards Track                                  Cisco Systems
                                                                 S. Kode
                                                              Consultant
                                                                  S. Gai
                                                                 Retired
                                                          September 2006


                 Fibre Channel Routing Information 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 routing within a Fibre Channel fabric, which is independent of the usage of a particular routing protocol.
Top   ToC   RFC4625 - Page 2

Table of Contents

1. Introduction ....................................................3 2. The Internet-Standard Management Framework ......................3 3. Short Overview of Fibre Channel .................................3 3.1. Introduction ...............................................3 3.2. Routing Protocols ..........................................4 3.3. Virtual Fabrics ............................................4 4. Relationship to Other MIBs ......................................5 5. MIB Overview ....................................................5 5.1. Fibre Channel Management Instance ..........................5 5.2. Switch Index ...............................................6 5.3. Fabric Index ...............................................6 5.4. The t11FcRouteGroup Group ..................................6 5.5. The t11FcRouteTable's INDEX ................................6 6. The T11-FC-ROUTE-MIB Module .....................................7 7. Acknowledgements ...............................................17 8. IANA Considerations ............................................17 9. Security Considerations ........................................17 10. Normative References ..........................................19 11. Informative References ........................................20
Top   ToC   RFC4625 - Page 3

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 Routing Table for routing within a Fabric. Managed objects specific to particular routing protocols, such as the Fabric Shortest Path First (FSPF) protocol [FC-SW-4], are not specified in this MIB module. The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119].

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

3.1. Introduction

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
Top   ToC   RFC4625 - Page 4
   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
   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 that 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,
   a Domain_ID being the highest level of the hierarchy.

3.2. Routing Protocols

The routing of frames within the Fabric is normally based on the standard routing protocol, called the Fabric Shortest Path First (FSPF) protocol. The operation of FSPF (or of any other routing protocol) allows a switch to generate and maintain its own routing table of how to forward frames it receives; i.e., a table in which to look up the destination address of a received frame in order to determine the best link by which to forward that frame towards its destination.

3.3. Virtual Fabrics

The latest standard for an interconnecting Fabric containing multiple Fabric Switch elements is [FC-SW-4] (which replaces the previous revision, [FC-SW-3]). [FC-SW-4] carries forward the existing specification for the operation of a single Fabric in a physical infrastructure, augmenting it with the definition of Virtual Fabrics and with the specification of how multiple Virtual Fabrics can operate within one (or more) physical infrastructures. The use of Virtual Fabrics provides for each frame to be tagged in its header to indicate which one of several Virtual Fabrics that frame is being transmitted on. All frames entering a particular "Core Switch" [FC-SW-4] (i.e., a physical switch) on the same Virtual Fabric are processed by the same "Virtual Switch" within that Core switch.
Top   ToC   RFC4625 - Page 5

4. Relationship to Other MIBs

The first standardized MIB for Fibre Channel [RFC2837] was focussed 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 [RFC2863] for Fibre Channel interfaces. This MIB extends beyond [FC-MGMT] to cover the routing of traffic within a Fabric of a Fibre Channel network. The standard routing protocol for Fibre Channel is FSPF [FC-SW-4]. Another MIB [RFC4626] specifies management information specific to FSPF. This MIB contains routing information that is independent of FSPF (i.e., it would still apply even if a routing protocol other than FSPF were in use in the network). This MIB imports some common Textual Conventions from T11-TC-MIB, defined in [RFC4439].

5. MIB Overview

This MIB module provides the means for monitoring the operation of, and configuring some parameters of, one or more instances of the FSPF protocol. (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 with multiple AgentX [RFC2741] sub-agents, 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 that uniquely identifies each Fibre Channel management instance within the same SNMP context ([RFC3411], Section 3.3.1).
Top   ToC   RFC4625 - Page 6

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 that uniquely identifies a Fibre Channel switch among those (one or more) managed by the same Fibre Channel management instance.

5.3. Fabric Index

Whether operating on a physical Fabric (i.e., without Virtual Fabrics) or within a Virtual Fabric, the operation of FSPF within a Fabric is identical. Therefore, this MIB defines all Fabric-related information in tables that are INDEX-ed by an arbitrary integer, named a "Fabric Index", the syntax of which is IMPORTed from the T11-TC-MIB. When a device is connected to a single physical Fabric, without use of any virtual Fabrics, the value of this Fabric Index will always be 1. In an environment of multiple virtual and/or physical Fabrics, this index provides a means to distinguish one Fabric from another. It is quite possible, and may even be likely, that a Fibre Channel switch will have ports connected to multiple virtual and/or physical Fabrics. Thus, in order to simplify a management protocol query concerning all the Fabrics to which a single switch is connected, fcmSwitchIndex will be listed before t11FcRouteFabricIndex when they both appear in the same INDEX clause.

5.4. The t11FcRouteGroup Group

This MIB contains one object group, the t11FcRouteGroup, which contains objects to allow the displaying and the configuring of routes in the Fibre Channel Routing tables for the locally managed switches.

5.5. The t11FcRouteTable's INDEX

It is normally valuable for a MIB table that contains routes to be ordered such that a management application is able to query the table based on some attribute, without having to read every row in the MIB table. This requires that the rows in the table be ordered according to such attributes, and thus that those attributes be represented by objects included in the table's INDEX clause. Examples of this can be seen in the ipCidrRouteTable [RFC2096] and, more recently, the inetCidrRouteTable in [RFC4292].
Top   ToC   RFC4625 - Page 7
   While this useful feature results in an unusually large number (ten)
   of objects in the t11FcRouteTable's INDEX clause, all ten are either
   integers or strings of 3 (or zero) octet length, so the resulting
   OIDs are not unusually large.  (Specifically, the aggregate number of
   sub-identifiers to be appended to an OBJECT-TYPE's OID, when naming
   an instance of an object in the t11FcRouteTable, is at most 22 sub-
   identifiers; i.e., less than the *minimum* number to be appended for
   the inetCidrRouteTable table.)

6. The T11-FC-ROUTE-MIB Module

T11-FC-ROUTE-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, Unsigned32, mib-2 FROM SNMPv2-SMI -- [RFC2578] MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF -- [RFC2580] RowStatus, TimeStamp, StorageType FROM SNMPv2-TC -- [RFC2579] InterfaceIndex, InterfaceIndexOrZero FROM IF-MIB -- [RFC2863] fcmInstanceIndex, fcmSwitchIndex, FcAddressIdOrZero, FcDomainIdOrZero FROM FC-MGMT-MIB -- [FC-MGMT] T11FabricIndex FROM T11-TC-MIB; -- [RFC4439] t11FcRouteMIB MODULE-IDENTITY LAST-UPDATED "200608140000Z" ORGANIZATION "T11" CONTACT-INFO " Claudio DeSanti Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134 USA EMail: cds@cisco.com Keith McCloghrie Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA USA 95134 Email: kzm@cisco.com" DESCRIPTION "The MIB module for configuring and displaying Fibre Channel Route Information. Copyright (C) The Internet Society (2006). This version of this MIB module is part of RFC 4625; see the RFC itself for full legal notices." REVISION "200608140000Z"
Top   ToC   RFC4625 - Page 8
    DESCRIPTION
           "Initial version of this MIB module, published as RFC4625."

    ::= {mib-2 144 }

t11FcRouteNotifications OBJECT IDENTIFIER ::= { t11FcRouteMIB 0 }
t11FcRouteObjects       OBJECT IDENTIFIER ::= { t11FcRouteMIB 1 }
t11FcRouteConformance   OBJECT IDENTIFIER ::= { t11FcRouteMIB 2 }

--
-- Per-Fabric routing information
--
t11FcRouteFabricTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF T11FcRouteFabricEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "The table containing Fibre Channel Routing information
           that is specific to a Fabric."
    ::= { t11FcRouteObjects 1 }

t11FcRouteFabricEntry OBJECT-TYPE
    SYNTAX      T11FcRouteFabricEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "Each entry contains routing information specific to a
           particular Fabric on a particular switch (identified by
           values of fcmInstanceIndex and fcmSwitchIndex)."
    INDEX      { fcmInstanceIndex, fcmSwitchIndex,
                 t11FcRouteFabricIndex }
    ::= { t11FcRouteFabricTable 1 }

T11FcRouteFabricEntry ::=
    SEQUENCE {
        t11FcRouteFabricIndex      T11FabricIndex,
        t11FcRouteFabricLastChange TimeStamp
    }

t11FcRouteFabricIndex 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 FC-SW-3, only a single Fabric
Top   ToC   RFC4625 - Page 9
           can operate within a physical infrastructure, and thus
           the value of this Fabric Index will always be 1.

           In a Fabric conformant to FC-SW-4, multiple Virtual Fabrics
           can operate within one (or more) physical infrastructures.
           In such a case, index value is used to uniquely identify a
           particular Fabric within a physical infrastructure."
    ::= { t11FcRouteFabricEntry 1 }

t11FcRouteFabricLastChange OBJECT-TYPE
    SYNTAX      TimeStamp
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
           "The value of sysUpTime at the most recent time when any
           corresponding row in the t11FcRouteTable was created,
           modified, or deleted.  A corresponding row in the
           t11FcRouteTable is for the same management instance,
           the same switch, and same Fabric as the row in this table.

           If no change has occurred since the last restart of the
           management system, then the value of this object is 0."
    ::= { t11FcRouteFabricEntry 2 }

--
-- Fibre Channel Routing table
--
t11FcRouteTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF T11FcRouteEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "The Fibre Channel Routing tables for the
           locally managed switches.  This table lists all the
           routes that are configured in and/or computed by any
           local switch for any Fabric.

           Such routes are used by a switch to forward frames (of user
           data) on a Fabric.  The conceptual process is based on
           extracting the Destination Fibre Channel Address Identifier
           (D_ID) out of a received frame (of user data) and comparing
           it to each entry of this table that is applicable to the
           given switch and Fabric.  Such comparison consists of first
           performing a logical-AND of the extracted D_ID with a mask
           (the value of t11FcRouteDestMask) and second comparing the
           result of that 'AND' operation to the value of
           t11FcRouteDestAddrId.  A similar comparison is made of the
           Source Fibre Channel Address Identifier (S_ID) of a frame
Top   ToC   RFC4625 - Page 10
           against the t11FcRouteSrcAddrId and t11FcRouteSrcMask values
           of an entry.  If an entry's value of t11FcRouteInInterface
           is non-zero, then a further comparison determines if the
           frame was received on the appropriate interface.  If all of
           these comparisons for a particular entry are successful,
           then that entry represents a potential route for forwarding
           the received frame.

           For entries configured by a user, t11FcRouteProto has
           the value 'netmgmt'; only entries of this type can be
           deleted by the user."
    ::= { t11FcRouteObjects 2 }

t11FcRouteEntry OBJECT-TYPE
    SYNTAX      T11FcRouteEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "Each entry contains a route to a particular destination,
           possibly from a particular subset of source addresses,
           on a particular Fabric via a particular output interface
           and learned in a particular manner."
    INDEX       { fcmInstanceIndex, fcmSwitchIndex,
                  t11FcRouteFabricIndex,
                  t11FcRouteDestAddrId, t11FcRouteDestMask,
                  t11FcRouteSrcAddrId, t11FcRouteSrcMask,
                  t11FcRouteInInterface, t11FcRouteProto,
                  t11FcRouteOutInterface }
    ::= { t11FcRouteTable 1 }
T11FcRouteEntry ::=
    SEQUENCE {
        t11FcRouteDestAddrId   FcAddressIdOrZero,
        t11FcRouteDestMask     FcAddressIdOrZero,
        t11FcRouteSrcAddrId    FcAddressIdOrZero,
        t11FcRouteSrcMask      FcAddressIdOrZero,
        t11FcRouteInInterface  InterfaceIndexOrZero,
        t11FcRouteProto        INTEGER,
        t11FcRouteOutInterface InterfaceIndex,
        t11FcRouteDomainId     FcDomainIdOrZero,
        t11FcRouteMetric       Unsigned32,
        t11FcRouteType         INTEGER,
        t11FcRouteIfDown       INTEGER,
        t11FcRouteStorageType  StorageType,
        t11FcRouteRowStatus    RowStatus
    }

t11FcRouteDestAddrId OBJECT-TYPE
    SYNTAX      FcAddressIdOrZero (SIZE (3))
Top   ToC   RFC4625 - Page 11
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "The destination Fibre Channel Address Identifier of
           this route.  A zero-length string for this field is
           not allowed."
    ::= { t11FcRouteEntry 1 }

t11FcRouteDestMask OBJECT-TYPE
    SYNTAX      FcAddressIdOrZero
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "The mask to be logical-ANDed with a destination
           Fibre Channel Address Identifier before it is compared
           to the value in the t11FcRouteDestAddrId field.
           Allowed values are 255.255.255, 255.255.0, or 255.0.0.
           FSPF's definition generates routes to a Domain_ID,
           so the mask for all FSPF-generated routes is 255.0.0.
           The zero-length value has the same meaning as 0.0.0."
    ::= { t11FcRouteEntry 2 }

t11FcRouteSrcAddrId OBJECT-TYPE
    SYNTAX      FcAddressIdOrZero
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "The source Fibre Channel Address Identifier of this
           route.  Note that if this object and the corresponding
           instance of t11FcRouteSrcMask both have a value of 0.0.0,
           then this route matches all source addresses.  The
           zero-length value has the same meaning as 0.0.0."
    ::= { t11FcRouteEntry 3 }

t11FcRouteSrcMask OBJECT-TYPE
    SYNTAX      FcAddressIdOrZero
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "The mask to be logical-ANDed with a source
           Fibre Channel Address Identifier before it is compared
           to the value in the t11FcRouteSrcAddrId field.  Allowed
           values are 255.255.255, 255.255.0, 255.0.0, or 0.0.0.
           The zero-length value has the same meaning as 0.0.0."
    ::= { t11FcRouteEntry 4 }

t11FcRouteInInterface OBJECT-TYPE
    SYNTAX      InterfaceIndexOrZero
Top   ToC   RFC4625 - Page 12
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "If the value of this object is non-zero, it is the
           value of ifIndex that identifies the local
           Fibre Channel interface through which a frame
           must have been received in order to match with
           this entry.  If the value of this object is zero,
           the matching does not require that the frame be
           received on any specific interface."
    ::= { t11FcRouteEntry 5 }

t11FcRouteProto OBJECT-TYPE
    SYNTAX   INTEGER {
                 other(1),
                 local(2),
                 netmgmt(3),
                 fspf(4)
              }
    MAX-ACCESS not-accessible
    STATUS   current
    DESCRIPTION
           "The mechanism via which this route was learned:
                other(1)  - not specified
                local(2)  - local interface
                netmgmt(3)- static route
                fspf(4)   - Fibre Shortest Path First
           "
    ::= { t11FcRouteEntry 6 }

t11FcRouteOutInterface OBJECT-TYPE
    SYNTAX      InterfaceIndex
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
           "The value of ifIndex that identifies the local
           Fibre Channel interface through which the next hop
           of this route is to be reached."
    ::= { t11FcRouteEntry 7 }

t11FcRouteDomainId OBJECT-TYPE
    SYNTAX      FcDomainIdOrZero
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
           "The domain_ID of next hop switch.

           This object can have a value of zero if the value
Top   ToC   RFC4625 - Page 13
           of t11FcRouteProto is 'local'."
    ::= { t11FcRouteEntry 8 }

t11FcRouteMetric OBJECT-TYPE
    SYNTAX      Unsigned32 (0..65536)
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
           "The routing metric for this route.

           The use of this object is dependent on t11FcRouteProto."
    ::= { t11FcRouteEntry 9 }

t11FcRouteType OBJECT-TYPE
    SYNTAX      INTEGER {
                    local(1),
                    remote(2)
                }
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
           "The type of route.

           local(1)  - a route for which the next Fibre Channel
                       port is the final destination;
           remote(2) - a route for which the next Fibre Channel
                      port is not the final destination."
    DEFVAL {local}
    ::= { t11FcRouteEntry 10 }

t11FcRouteIfDown OBJECT-TYPE
    SYNTAX      INTEGER {
                    remove(1),
                    retain(2)
                }
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
           "The value of this object indicates what happens to
           this route when the output interface (given by the
           corresponding value of t11FcRouteOutInterface) is
           operationally 'down'.  If this object's value is 'retain',
           the route is to be retained in this table.  If this
           object's value is 'remove', the route is to be removed
           from this table."
    DEFVAL  { retain }
    ::= { t11FcRouteEntry 11 }
Top   ToC   RFC4625 - Page 14
t11FcRouteStorageType OBJECT-TYPE
    SYNTAX      StorageType
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
           "The storage type for this conceptual row.
           Conceptual rows having the value 'permanent' need not
           allow write-access to any columnar objects in the row."
       DEFVAL { nonVolatile }
    ::= { t11FcRouteEntry 12 }

t11FcRouteRowStatus OBJECT-TYPE
    SYNTAX      RowStatus
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
           "The status of this conceptual row.
           The only rows that can be deleted by setting this object to
           'destroy' are those for which t11FcRouteProto has the value
           'netmgmt'."
    ::= { t11FcRouteEntry 13 }

--
-- Conformance
--
t11FcRouteCompliances OBJECT IDENTIFIER
                         ::= { t11FcRouteConformance 1 }
t11FcRouteGroups      OBJECT IDENTIFIER
                         ::= { t11FcRouteConformance 2 }


t11FcRouteCompliance  MODULE-COMPLIANCE
    STATUS    current
    DESCRIPTION
           "The compliance statement for entities that
           implement the T11-FC-ROUTE-MIB.
--
-- Note: The next four OBJECT clauses are for auxiliary objects, and the
-- SMIv2 does not permit inclusion of objects that are not accessible
-- in an OBJECT clause (see Sections 3.1 & 5.4.3 in STD 58, RFC 2580).
-- Thus, these four clauses cannot be included below in the normal
-- location for OBJECT clauses.
--
--      OBJECT     t11FcRouteSrcAddrId
--      SYNTAX     FcAddressIdOrZero (SIZE (0))
--      DESCRIPTION
--             'Support is not required for routes that
--             match only a subset of possible source
Top   ToC   RFC4625 - Page 15
--             addresses.'
--
--      OBJECT     t11FcRouteSrcMask
--      SYNTAX     FcAddressIdOrZero (SIZE (0))
--      DESCRIPTION
--             'Support is not required for routes that
--             match only a subset of possible source
--             addresses.'
--
--      OBJECT     t11FcRouteDestMask
--      DESCRIPTION
--             'Support is mandatory only for FSPF-generated
--             routes.  Since FSPF's definition generates
--             routes to a Domain_ID, the mask for all
--             FSPF-generated routes is 255.0.0.  Thus,
--             support is only required for 255.0.0.'
--
--      OBJECT     t11FcRouteInInterface
--      SYNTAX     InterfaceIndexOrZero (0)
--      DESCRIPTION
--             'Support for routes specific to particular
--             source interfaces is not required.'
          "

    MODULE  -- this module
        MANDATORY-GROUPS { t11FcRouteGroup }

        OBJECT     t11FcRouteIfDown
        MIN-ACCESS read-only
        DESCRIPTION
               "Write access is not required."

        OBJECT     t11FcRouteDomainId
        MIN-ACCESS read-only
        DESCRIPTION
               "Write access is not required."

        OBJECT     t11FcRouteMetric
        MIN-ACCESS read-only
        DESCRIPTION
               "Write access is not required."

        OBJECT     t11FcRouteType
        MIN-ACCESS read-only
        DESCRIPTION
               "Write access is not required."

        OBJECT     t11FcRouteStorageType
Top   ToC   RFC4625 - Page 16
        MIN-ACCESS read-only
        DESCRIPTION
               "Write access is not required."

        OBJECT     t11FcRouteRowStatus
        SYNTAX     INTEGER { active(1) }
        MIN-ACCESS read-only
        DESCRIPTION
               "Write access is not required."

    ::= { t11FcRouteCompliances 1 }
t11FcRouteGroup  OBJECT-GROUP
    OBJECTS  { t11FcRouteFabricLastChange,
               t11FcRouteDomainId,
               t11FcRouteMetric,
               t11FcRouteType,
               t11FcRouteIfDown,
               t11FcRouteStorageType,
               t11FcRouteRowStatus
             }
    STATUS   current
    DESCRIPTION
           "A collection of objects for displaying and configuring
           routes."
    ::= { t11FcRouteGroups 1 }

END
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7. Acknowledgements

This document was originally developed and approved by the INCITS Task Group T11.5 (http://www.t11.org) as the SM-RTM project. We wish to acknowledge the 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 Elizabeth G. Rodriguez, Dot Hill The document was subsequently approved by the IETF's IMSS Working Group, chaired by David Black (EMC Corporation). We also wish to acknowledge Bert Wijnen (Lucent Technologies), the IETF Area Director, for his review of the document.

8. IANA Considerations

The IANA has assigned a MIB OID for the T11-FC-ROUTE-MIB module under the appropriate subtree.

9. Security Considerations

There are several 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 objects and their sensitivity/vulnerability are: t11FcRouteDomainId, t11FcRouteMetric, t11FcRouteType, t11FcRouteIfDown, t11FcRouteRowStatus -- configure new routes and/or modify existing routes. 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.
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   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.  The objects and their
   sensitivity/vulnerability are: the write-able objects listed above
   plus one other:

        t11FcRouteLastChangeTime
           -- the time of the last routing table change.

   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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10. Normative References

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2578] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M., and S. Waldbusser, "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999. [RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M., and S. Waldbusser, "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999. [RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M., and S. Waldbusser, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999. [RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB", RFC 2863, June 2000. [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. [RFC4439] DeSanti, C., Gaonkar, V., McCloghrie, K., and S. Gai, "Fibre Channel Fabric Address Manager MIB", RFC 4439, March 2006. [RFC4626] DeSanti, C., Gaonkar, V., McCloghrie, K., and S. Gai, "MIB for Fibre Channel's Fabric Shortest Path First (FSPF) Protocol", RFC 4626, September 2006. [FC-FS] "Fibre Channel - Framing and Signaling (FC-FS)", ANSI INCITS 373-2003, April 2003. [FC-SW-3] "Fibre Channel - Switch Fabric - 3 (FC-SW-3)", ANSI INCITS 384-2004, 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.
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11. Informative References

[RFC2096] Baker, F., "IP Forwarding Table MIB", RFC 2096, January 1997. [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. [RFC4292] Haberman, B., "IP Forwarding Table MIB", RFC 4292, April 2006.
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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: cds@cisco.com Srini Kode Consultant Phone: 408-348-5343 EMail: srinikode@yahoo.com Keith McCloghrie Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA USA 95134 Phone: +1 408-526-5260 EMail: kzm@cisco.com Silvano Gai Retired
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