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Versions: (draft-ietf-imss-fc-virtual-fabrics-mib) 00 01 02 RFC 4747

     INTERNET DRAFT                                         Scott Kipp
                                                          G D Ramkumar
                                                    McDATA Corporation

                                                      Keith McCloghrie
                                                         Cisco Systems
                                                        April 27, 2006


                       The Virtual Fabrics MIB
                   draft-ietf-imss-fc-vf-mib-02.txt

 Status of this Memo

   By submitting this Internet-Draft, each author represents
   that any applicable patent or other IPR claims of which he or
   she is aware have been or will be disclosed, and any of which
   he or she becomes aware will be disclosed, in accordance with
   Section 6 of BCP 79.

   Internet-Drafts are working documents of the Internet
   Engineering

   Task Force (IETF), its areas, and its working groups. Note
   that other groups may also distribute working documents as
   Internet-Drafts. Internet-Drafts are draft documents valid
   for a maximum of six months and may be updated, replaced, or
   made obsolete by other documents at any time. It is
   inappropriate to use Internet- Drafts as reference material
   or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt

   The list of Internet-Draft Shadow Directories can be accessed
   at http://www.ietf.org/shadow.html.

 Abstract

   This memo defines a portion of the Management Information
   Base (MIB) for use with network management protocols in the
   Internet community.  In particular, it describes managed
   objects for information related to the Fibre Channel
   network's Virtual Fabrics function.








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 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 Representing Core and Virtual Switches..........................5
 6. The T11-FC-IRTUAL-FABRIC-MIB Module..............................7
 7. Security Considerations.........................................17
 8. IANA Considerations.............................................18
 9. Acknowledgements................................................18
 10. Normative References...........................................19
 11. Informative References.........................................19
 12. Author's Addresses.............................................21
 13. Intellectual Property..........................................22
































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 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 Virtual Fabric function.

 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

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

   Virtual Fabrics allow a single physical Fabric to be divided
   into multiple logical Fabrics.  Each Virtual Fabric may be
   managed independently like traditional Fabrics.  Virtual
   Fabrics are designed to achieve a better utilization of a
   physical infrastructure and to isolate events in one Virtual
   Fabric from affecting other Fabrics.  When one Core Switch
   provides switching functions for multiple Virtual Fabrics,
   that Core Switch is modeled as containing multiple Virtual
   Switches, one for each Virtual Fabric.

   Each Virtual Fabric is identified by a 12-bit Virtual Fabric
   ID (VF_ID). When frames from multiple Virtual Fabrics are
   transmitted over a physical link, the VF_ID carried in a
   frame's Virtual Fabric Tagging Header (VFT_Header) identifies
   which Virtual Fabric the frame belongs to.  The use of
   VFT_Headers is enabled through an initial negotiation
   exchange between the two connected ports.

 4.      Relationship to Other MIBs

   This MIB extends beyond [RFC4044] to cover the functionality,
   in Fibre Channel switches, of providing Fibre Channel's
   Virtual

   Fabrics function.



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 5.      MIB Overview

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

   The following MIB module has IMPORTS from [RFC2578],
   [RFC2579], [RFC2580], [RFC2863], [RFC4044] and [FC-FAM-MIB].
   In REFERENCE clauses, it refers to [FC-SW-4].

 5.1     Fibre Channel management instance

   A Fibre Channel management instance is defined in [RFC4044]
   as a separable managed instance of Fibre Channel
   functionality. Fibre Channel functionality may be grouped
   into Fibre Channel management instances in whatever way is
   most convenient for the implementation(s). For example, one
   such grouping accommodates a single SNMP agent having
   multiple AgentX [RFC2741] sub-agents, with each sub-agent
   implementing a different Fibre Channel management instance.

   The object, fcmInstanceIndex, is IMPORTed from the FC-MGMT-
   MIB [RFC4044] as the index value to uniquely identify each
   Fibre Channel management instance within the same SNMP
   context ([RFC3411] section 3.3.1). The
   t11vfVirtualSwitchTable augments the fcmSwitchTable, and the
   primary index variable of the fcmSwitchTable is
   fcmInstanceIndex.

 5.2     Representing Core and Virtual Switches

   In the presence of Virtual Switches, fcmSwitchTable in
   RFC4044 contains a row for each Virtual Switch.
   fcmSwitchTable, t11vfCoreSwitchTable and
   t11vfVirtualSwitchTable are complementary. The
   t11vfCoreSwitchTable and t11vfVirtualSwitchTable contain
   information that helps the management client determine which
   Switches are Virtual Switches and how each relates to a Core
   Switch. A Virtual Switch must reside in a single Core Switch
   and a Core Switch is defined as a set of entities with the
   same Core Switch_Name.

   RFC 4044 was defined before Virtual Switches were standard
   and represented only physical Switches, so the RFC 4044
   tables were not defined as read-create.  With the advent of
   Virtual Switches, Virtual Switches can now be created by

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   administrators and read-create tables are required. The
   StorageType of RFC 4044 tables were not defined and
   StorageTypes used in this MIB should also apply to the
   RFC4044 tables that this MIB augments.













































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6.       The T11-FC-IRTUAL-FABRIC-MIB Module

   T11-FC-VIRTUAL-FABRIC-MIB DEFINITIONS ::= BEGIN

   IMPORTS
       MODULE-IDENTITY, OBJECT-TYPE,
       Unsigned32, mib-2
                               FROM SNMPv2-SMI         -- [RFC2578]
       MODULE-COMPLIANCE, OBJECT-GROUP
                               FROM SNMPv2-CONF        -- [RFC2580]
       RowStatus, StorageType  FROM SNMPv2-TC          -- [RFC2579]
       InterfaceIndex          FROM IF-MIB             -- [RFC2863]
       fcmInstanceIndex, FcNameIdOrZero,
       fcmPortEntry, fcmSwitchEntry
                               FROM FC-MGMT-MIB        -- [RFC4044]
       T11FabricIndex          FROM T11-TC-MIB;        -- [FC-FAM-MIB]

   t11FcVirtualFabricMIB  MODULE-IDENTITY
       LAST-UPDATED    "200604270000Z"
       ORGANIZATION    "IETF IMSS (Internet and Management Support
                        for Storage)Working Group"
       CONTACT-INFO
               "
                      Scott Kipp
                        McDATA Corporation
                   Tel: +1 720 558-3452
                E-mail: scott.kipp@mcdata.com
                Postal: 4 McDATA Parkway
                        Broomfield, CO USA 80021

                     G D Ramkumar
                        McDATA Corporation
                   Tel: +1 408 567-5614
                E-mail: gramkumar@stanfordalumni.org
                Postal: 4555 Great American Parkway
                        Santa Clara, CA USA 95054

                        Keith McCloghrie
                        Cisco Systems, Inc.
                   Tel: +1 408 526-5260
                E-mail: kzm@cisco.com
                Postal: 170 West Tasman Drive
                        San Jose, CA USA 95134
               "

       DESCRIPTION
             "This module defines management information specific to
             Fibre Channel Virtual Fabrics.  A Virtual Fabric is a
             Fabric composed of partitions of switches, links and
             N_Ports with a single Fabric management domain, Fabric
             Services and independence from other Virtual Fabrics.

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            Copyright (C) The Internet Society (2006).  This version of
            this MIB module is part of RFC yyyy; see the RFC itself for
            full legal notices."
   -- RFC Ed.: replace yyyy with actual RFC number & remove this note
       REVISION        "200604270000Z"
       DESCRIPTION
               "Initial version of this MIB module, published as RFCyyyy."
   -- RFC-Editor, replace yyyy with actual RFC number & remove this note
       ::= { mib-2 nnn }  -- to be assigned by IANA
   -- RFC Editor: replace nnn with IANA-assigned number & remove this note

   t11vfObjects       OBJECT IDENTIFIER ::= { t11FcVirtualFabricMIB 1 }
   t11vfConformance   OBJECT IDENTIFIER ::= { t11FcVirtualFabricMIB 2 }


   --********************************
   --  MIB object definitions
   --

   t11vfCoreSwitchTable  OBJECT-TYPE
       SYNTAX      SEQUENCE OF T11vfCoreSwitchEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A table of core switches supported by the current
            management entity."
       ::= { t11vfObjects 1 }

   t11vfCoreSwitchEntry OBJECT-TYPE
       SYNTAX      T11vfCoreSwitchEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Each entry represents one core switch."
       INDEX   { fcmInstanceIndex, t11vfCoreSwitchSwitchName }
       ::= { t11vfCoreSwitchTable 1}

   T11vfCoreSwitchEntry ::=
       SEQUENCE {
          t11vfCoreSwitchSwitchName   FcNameIdOrZero,
          t11vfCoreSwitchMaxSupported Unsigned32,
         t11vfCoreSwitchStorageType  StorageType
       }

   t11vfCoreSwitchSwitchName OBJECT-TYPE
       SYNTAX      FcNameIdOrZero (SIZE(8 | 16))
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The Core Switch_Name (WWN) of this Core Switch. "

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       ::= { t11vfCoreSwitchEntry 1 }

   t11vfCoreSwitchMaxSupported OBJECT-TYPE
       SYNTAX      Unsigned32 (1..4095)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           " In switches that do not support Virtual Fabrics,
             this object has the value of 1. If Virtual Fabrics
             are supported, this object is the maximum number of
             Virtual Fabrics supported by the Core Switch.  For
             the purpose of this count, the Control VF_ID is
            ignored."
       ::= { t11vfCoreSwitchEntry 2 }

   t11vfCoreSwitchStorageType OBJECT-TYPE
       SYNTAX      StorageType
       MAX-ACCESS  read-write
       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 }
       ::= { t11vfCoreSwitchEntry 3 }

   -- Virtual Switch table

   t11vfVirtualSwitchTable  OBJECT-TYPE
       SYNTAX      SEQUENCE OF T11vfVirtualSwitchEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A table of Virtual Switches. When one Core Switch
           provides switching functions for multiple Virtual Fabrics,
           that Core Switch is modeled as containing multiple
           Virtual Switches, one for each Virtual Fabric. This table
           contains one row for every Virtual Switch on every Core
           Switch.  This table augments the basic switch information in
           the fcmSwitchTable Table in the FC-MGMT-MIB."
       REFERENCE
           "fcmSwitchTable is defined in the FC-MGMT-MIB [RFC4044]."
       ::= { t11vfObjects 2 }

   t11vfVirtualSwitchEntry OBJECT-TYPE
       SYNTAX      T11vfVirtualSwitchEntry
       MAX-ACCESS  not-accessible
       STATUS      current

       DESCRIPTION
           "An entry of the Virtual Switch table.  Each row is for a

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            Virtual Switch.

          This table augments the fcmSwitchTable, i.e., every entry
          in this table has a one-to-one correspondence with an
          entry in the fcmSwitchTable.  At the time when the
          fcmSwitchTable was defined, it applied to physical
          switches. With the definition and usage of virtual
          switches, fcmSwitchTable now applies to virtual switches
          which (unlike physical fabrics) are create-able via SNMP.
          So, this entry contains a RowStatus object (to allow the
          creation of a virtual switch), as well as a StorageType
          object.  Obviously, if a row is created/deleted in this
          table, the corresponding row in the fcmSwitchTable will
          be created/deleted."
       REFERENCE
            "fcmSwitchEntry is defined in the FC-MGMT-MIB module
             [RFC4044]."
       AUGMENTS   { fcmSwitchEntry }
       ::= { t11vfVirtualSwitchTable 1}

   T11vfVirtualSwitchEntry ::=
       SEQUENCE {
           t11vfVirtualSwitchVfId               T11FabricIndex,
           t11vfVirtualSwitchCoreSwitchName     FcNameIdOrZero,
           t11vfVirtualSwitchRowStatus          RowStatus,
           t11vfVirtualSwitchStorageType       StorageType
       }

   t11vfVirtualSwitchVfId OBJECT-TYPE
       SYNTAX      T11FabricIndex
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "The VF_ID of the Virtual Fabric for which this virtual
           switch performs its switching function. The Control
          VF_ID is implicitly enabled and is not set.
          Communication with the Control VF_ID is required. "
       REFERENCE
            "FC-SW-4, REV 7.5, section 12.2"
       ::= { t11vfVirtualSwitchEntry 1 }

   t11vfVirtualSwitchCoreSwitchName OBJECT-TYPE
       SYNTAX      FcNameIdOrZero (SIZE(8 | 16))
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The Core Switch_Name (WWN) of the Core Switch that
          contains this Virtual Switch."
       REFERENCE
            "FC-SW-4, REV 7.5, section 12.2."
       ::= { t11vfVirtualSwitchEntry 2 }

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   t11vfVirtualSwitchRowStatus OBJECT-TYPE
           SYNTAX      RowStatus
           MAX-ACCESS  read-create
           STATUS      current
           DESCRIPTION
                   "The status of this row."
           ::= { t11vfVirtualSwitchEntry 3 }

   t11vfVirtualSwitchStorageType 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 }
       ::= { t11vfVirtualSwitchEntry 4 }

   -- Port table

   t11vfPortTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF T11vfPortEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A table of Port attributes related to Virtual Fabrics."
       ::= { t11vfObjects 3 }

   t11vfPortEntry OBJECT-TYPE
       SYNTAX      T11vfPortEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Each entry represents a physical Port on a switch.
            Switches that support Virtual Fabrics would add
            these four additional columns to the fcmPortEntry
             row."
       REFERENCE
            "fcmPortEntry is defined in the FC-MGMT-MIB module. "
       AUGMENTS   { fcmPortEntry }
       ::= { t11vfPortTable 1}

   T11vfPortEntry ::=
       SEQUENCE {
           t11vfPortVfId                T11FabricIndex,
           t11vfPortTaggingAdminStatus   INTEGER,
           t11vfPortTaggingOperStatus    INTEGER,
           t11vfPortStorageType        StorageType
       }

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   t11vfPortVfId OBJECT-TYPE
       SYNTAX      T11FabricIndex
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           "The Port VF_ID assigned to this Port. The Port VF_ID is the
           default Virtual Fabric that is assigned to untagged frames
           arriving at this Port. The Control VF_ID is implicitly
          enabled and is not set.  Communication with the Control
          VF_ID is required. "
       REFERENCE
            "FC-SW-4, REV 7.5, section 12.1"
       DEFVAL    {1}
       ::= { t11vfPortEntry 1 }

   t11vfPortTaggingAdminStatus OBJECT-TYPE
       SYNTAX INTEGER {
           off(1),
           on(2),
           auto(3)
       }
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           "This object is used to configure the administrative status
          of Virtual Fabric tagging on this Port.

           SET operation   Description
           --------------  -------------------------------------------
           off(1)          To disable Virtual Fabric tagging on this
                           Port.

           on(2)           To enable Virtual Fabric tagging on this
                           Port if the attached Port doesn't
                           prohibit it.

           auto(3)         To enable Virtual Fabric tagging if the
                           peer requests it. "
       REFERENCE
            " FC-SW-4, REV 7.5, section 12.4"
       ::= { t11vfPortEntry 2 }

    t11vfPortTaggingOperStatus OBJECT-TYPE
       SYNTAX INTEGER {
           off(1),
           on(2)
               }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION

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           "This object is used to report the operational status of
           Virtual Fabric tagging on this Port.

           SET operation   Description
           --------------  -------------------------------------------
           off(1)          Virtual Fabric tagging is disabled on this
                           Port.

           on(2)           Virtual Fabric tagging is enabled on this
                           Port. "

       REFERENCE
            " FC-SW-4, REV 7.5, section 12.4"
       ::= { t11vfPortEntry 3 }

   t11vfPortStorageType OBJECT-TYPE
       SYNTAX      StorageType
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
              "The storage type for this conceptual row, and for the
             corresponding row in the augmented fcmPortTable.

               Conceptual rows having the value 'permanent' need not
               allow write-access to any columnar objects in the row."
          DEFVAL { nonVolatile }
       ::= { t11vfPortEntry 4 }



   -- Locally Enabled Table

   t11vfLocallyEnabledTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF T11vfLocallyEnabledEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A table for assigning and reporting operational status of
            Locally-enabled Virtual Fabric IDs to Ports. The set of
           Virtual Fabrics operational on the Port is the bit-wise
           'AND' of the set of Locally-enabled VF_IDs of this Port
           and the Locally-enabled VF_IDs of the attached Port."
       ::= { t11vfObjects 4 }

   t11vfLocallyEnabledEntry OBJECT-TYPE
       SYNTAX      T11vfLocallyEnabledEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "An entry for each Locally-enabled VF_ID on
            each Port."

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       REFERENCE
            " FC-SW-4, REV 7.5, section 12.4"
       INDEX { t11vfLocallyEnabledPortIfIndex, t11vfLocallyEnabledVfId }

       ::= { t11vfLocallyEnabledTable 1}

   T11vfLocallyEnabledEntry ::=
       SEQUENCE {
           t11vfLocallyEnabledPortIfIndex    InterfaceIndex,
           t11vfLocallyEnabledVfId           T11FabricIndex,
           t11vfLocallyEnabledOperStatus     INTEGER,
           t11vfLocallyEnabledRowStatus      RowStatus,
           t11vfLocallyEnabledStorageType    StorageType
       }

   t11vfLocallyEnabledPortIfIndex OBJECT-TYPE
       SYNTAX      InterfaceIndex
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The value of the ifIndex which identifies the Port."
       ::= { t11vfLocallyEnabledEntry 1 }

   t11vfLocallyEnabledVfId OBJECT-TYPE
       SYNTAX      T11FabricIndex
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A Locally-Enabled VF_ID on this Port."
       ::= { t11vfLocallyEnabledEntry 2 }

   t11vfLocallyEnabledOperStatus OBJECT-TYPE
       SYNTAX INTEGER {
           off(1),
           on(2)
               }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "This object is used to report the operational status of
          Virtual Fabric tagging on this Port.

           SET operation   Description
           --------------  -------------------------------------------
           off(1)          Virtual Fabric tagging is disabled on this
                           Port.

           on(2)           Virtual Fabric tagging is enabled on this
                           Port. "



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       REFERENCE
            " FC-SW-4, REV 7.3, section 12.4"
       ::= { t11vfLocallyEnabledEntry 3 }

   t11vfLocallyEnabledRowStatus OBJECT-TYPE
           SYNTAX      RowStatus
           MAX-ACCESS  read-create
           STATUS      current
           DESCRIPTION
                   "The status of this conceptual row.

                When a row in this table is in 'active(1)' state,
                no object in that row can be modified except
                t11vfLocallyEnabledRowStatus and
                t11vfLocallyEnabledStorageType."
           ::= { t11vfLocallyEnabledEntry 4 }

   t11vfLocallyEnabledStorageType 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 }
           ::= { t11vfLocallyEnabledEntry 5 }


   --********************************
   -- Conformance Section
   --

   t11vfMIBCompliances OBJECT IDENTIFIER ::= { t11vfConformance 1 }
   t11vfMIBGroups      OBJECT IDENTIFIER ::= { t11vfConformance 2 }

   t11vfMIBCompliance MODULE-COMPLIANCE
       STATUS  current
       DESCRIPTION
               "Describes the requirements for compliance to the
                Fibre Channel Virtual Fabric MIB."
       MODULE  -- this module
           MANDATORY-GROUPS { t11vfGeneralGroup }

           OBJECT t11vfCoreSwitchMaxSupported
           MIN-ACCESS read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT t11vfCoreSwitchStorageType
           MIN-ACCESS read-only

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           DESCRIPTION
               "Write access is not required."

           OBJECT t11vfVirtualSwitchVfId
           MIN-ACCESS read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT t11vfVirtualSwitchRowStatus
           SYNTAX RowStatus { active(1) }
           MIN-ACCESS read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT t11vfVirtualSwitchStorageType
           MIN-ACCESS read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT t11vfPortVfId
           MIN-ACCESS read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT t11vfPortTaggingAdminStatus
           MIN-ACCESS read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT t11vfPortStorageType
           MIN-ACCESS read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT t11vfLocallyEnabledRowStatus
           SYNTAX       RowStatus { active(1) }
           MIN-ACCESS read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT t11vfLocallyEnabledStorageType
           MIN-ACCESS read-only
           DESCRIPTION
               "Write access is not required."

       ::= { t11vfMIBCompliances 1 }

   -- Units of conformance

       t11vfGeneralGroup  OBJECT-GROUP
           OBJECTS { t11vfCoreSwitchMaxSupported,
                     t11vfVirtualSwitchVfId,

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                     t11vfVirtualSwitchCoreSwitchName,
                     t11vfVirtualSwitchRowStatus,
                     t11vfPortVfId,
                     t11vfPortTaggingAdminStatus,
                     t11vfLocallyEnabledOperStatus,
                     t11vfPortTaggingOperStatus,
                     t11vfLocallyEnabledRowStatus,
                  t11vfCoreSwitchStorageType,
                      t11vfVirtualSwitchStorageType,
                     t11vfPortStorageType,
                     t11vfLocallyEnabledStorageType

           }
           STATUS current
           DESCRIPTION
               "A collection of objects for monitoring and
               configuring Virtual Fabrics in a Fibre Channel switch."
           ::= { t11vfMIBGroups 1 }

   END


 7.      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:

   t11vfCoreSwitchMaxSupported, t11vfVirtualSwitchVfId,

   t11vfCoreSwitchStorageType, t11vfVirtualSwitchStorageType
   and t11vfVirtualSwitchRowStatus

        - the ability to change the configuration of Virtual
        Fabrics on a particular switch.

   t11vfPortTaggingAdminStatus, t11vfLocallyEnabledRowStatus,
   t11vfPortVfId, t11vfPortStorageType and
   t11vfLocallyEnabledStorageType

        - the ability to change the configuration of Virtual
   Fabrics
        on a port of a particular switch.



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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.  These are the tables and objects and
   their sensitivity/vulnerability:

   t11vfVirtualSwitchCoreSwitchName, t11vfPortTaggingOperStatus,
   t11vfLocallyEnabledOperStatus,

        - the ability to discover configuration of Virtual
        Fabrics on
        a virtual switch or a port.

   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 implementers 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.

 8.      IANA Considerations

   IANA is requested to make the OID assignment for the MIB
   module under the appropriate subtree.

 9.      Acknowledgements

   This document was developed by the INCITS Task Group T11.5.
   We wish to acknowledge the contributions and comments from
   the INCITS Technical Committee T11 and the IMSS WG, including
   the following:


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         T11 Chair: Robert Snively, Brocade
         T11 Vice Chair: Claudio Desanti, Cisco Systems
         T11.5 Chair: Roger Cummings, Symantec
         IMSS WG Chair: David Black
         Bert Wijnen

 10.     Normative References

       [RFC4044]
            McCloghrie, K., "Fibre Channel Management MIB", RFC 4044,
            May 2005

       [RFC2578]
            McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
            Rose, M. and S. Waldbusser, "Structure of Management
            Information Version 2 (SMIv2)", 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", RFC 2580, April 1999.

        [RFC2863]
            McCloghrie and K., Kastenholz, F., "The Interface Group
            MIB", RFC 2863, June 2000.

        [FC-FAM-MIB]
            Desanti, C., Gaonkar, V., McCloghrie, K., Gai, S., "Fibre
            Channel Fabric Address Manager MIB", RFC 4389, March 2006.

        [FC-FS]
            "Fibre Channel Framing and Signaling (FC-FS)", ANSI INCITS
            373-2003, http://www.t11.org/t11/stat.nsf/upnum/1331-d,
            April 2003.

        [FC-SW-4]
            "Fibre Channel Switch Fabric 4 (FC-SW-4)", ANSI INCITS 418-
            2006, http://www.t11.org/t11/stat.nsf/upnum/1674-d, 2006.

 11.     Informative References

        [RFC3410]
            Case, J., Mundy, R., Partain, D. and B. Stewart,

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            "Introduction and Applicability Statements for Internet-
            Standard Management Framework", RFC 3410, December 2002.

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

        [RFC3411]
            Harrington, D., Presuhn, R., and B. Wijnen, "An
            Architecture for Describing Simple Network Management
            Protocol (SNMP) Management Frameworks", STD 58, RFC 3411,
            December 2002.




































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 12.     Author's Addresses

   Scott Kipp,
   McDATA Corporation
   4 McDATA Parkway
   Broomfield, CO 80021
   Phone: (720) 558-3452
   Email: scott.kipp@mcdata.com

   G D Ramkumar
   McDATA Corporation
   4555 Great American Parkway
   Santa Clara, CA 95054
   Phone: (408) 567-5614
   Email: gramkumar@stanfordalumni.org

   Keith McCloghrie
   Cisco Systems
   170 West Tasman Drive
   San Jose, CA USA 95134
   Phone : +1 408-526-5260
   Email : kzm@cisco.com



























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 13.     Intellectual Property

   The IETF takes no position regarding the validity or scope of
   any Intellectual Property Rights or other rights that might
   be claimed to pertain to the implementation or use of the
   technology described in this document or the extent to which
   any license under such rights might or might not be
   available; nor does it represent that it has made any
   independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can
   be found in BCP 78 and BCP 79.

   Copies of IPR disclosures made to the IETF Secretariat and
   any assurances of licenses to be made available, or the
   result of an attempt made to obtain a general license or
   permission for the use of such proprietary rights by
   implementers or users of this specification can be obtained
   from the IETF on-line IPR repository at
   http://www.ietf.org/ipr.

   The IETF invites any interested party to bring to its
   attention any copyrights, patents or patent applications, or
   other proprietary rights that may cover technology that may
   be required to implement this standard.  Please address the
   information to the IETF at ietf-ipr@ietf.org.

 Full Copyright Statement

   Copyright (C) The Internet Society 2006.

   This document is subject to the rights, licenses and
   restrictions contained in BCP 78, and except as set forth
   therein, the authors retain all their rights.
















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   Disclaimer of Validity

   This document and the information contained herein are
   provided on an "AS IS" basis and THE CONTRIBUTOR, THE
   ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY),
   THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE
   DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
   NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES
   OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

   Internet-Drafts are working documents of the Internet
   Engineering Task Force (IETF), its areas, and its working
   groups. Note that other groups may also distribute working
   documents as Internet-Drafts.

   Internet-Drafts are draft documents valid for a maximum of
   six months and may be updated, replaced, or obsoleted by
   other documents at any time. It is inappropriate to use
   Internet-Drafts as reference material or to cite them other
   than as "work in progress."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/1id-abstracts.html

   The list of Internet-Draft Shadow Directories can be accessed
   at
   http://www.ietf.org/shadow.html

 Acknowledgement

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

 Expiration Notice

   This Internet-Draft expires in September 2006.












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