Internet DRAFT - draft-desanti-fc-name-server

draft-desanti-fc-name-server




Internet Draft                                              C. DeSanti
                                                            V. Gaonkar
                                                            H.K. Vivek
                                                         K. McCloghrie
                                                                S. Gai
                                                         Cisco Systems
                                                          17 July 2004
                     Fibre-Channel Name Server MIB
                  draft-desanti-fc-name-server-02.txt

Status of this Memo

   By submitting this Internet-Draft, I certify that any applicable
   patent or other IPR claims of which I am aware have been disclosed,
   and any of which I become aware will be disclosed, in accordance with
   RFC 3668.

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Copyright Notice

   Copyright (C) The Internet Society (2004).  All Rights Reserved.

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 Name Server function.  At present,
   this memo is a work item of T11.5 (http://www.t11.org).  The plan is
   that it will later become a work item of IETF's IMSS working group.





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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 Name Server Index ..........................................    5
   5.3 Fabric Index ...............................................    6
   5.4 The MIB Groups .............................................    6
   5.4.1 The t11NsDBGroup group ...................................    6
   5.4.2 The t11NsStatsGroup group ................................    6
   5.4.3 The t11NsNotifyControlGroup group ........................    6
   5.4.4 The t11NsNotifyGroup group ...............................    6
   5.5 The Actual Values of Objects ...............................    6
   6 The T11-FC-NAME-SERVER-MIB Module ............................    7
   7 Intellectual Property ........................................   29
   8 Acknowledgements .............................................   30
   9 Normative References .........................................   30
   10 Informative References ......................................   31
   11 Security Considerations .....................................   31
   12 Authors' Addresses ..........................................   33
   13 Full Copyright Statement ....................................   34


























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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 Name Server 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 F_Port or an FL_Port.  A
   switch port, which is interconnected to another switch port via an





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

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

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

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

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

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


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 for Fibre Channel interfaces.

   This MIB extends beyond [FC-MGMT] to cover the functionality, in





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   Fibre Channel switches, of providing Fibre Channel's Name Server
   function.

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


5.  MIB Overview

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

5.1.  Fibre Channel management instance

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

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

5.2.  Name Server Index

   As well as allowing for multiple Fibre Channel management instances,
   this MIB also allows for multiple instances of the Name Server
   functionality within each Fibre Channel management instance.
   Further, some of the Name Server instances managed by the same Fibre
   Channel management instance, can operate local to a particular Fibre
   Channel switch and some can operate independent of any particular
   switch.

   Therefore, all objects in this MIB are in tables which are INDEX-ed
   by at least fcmInstanceIndex and t11NsIndex, where the latter is an
   index value which uniquely identifies a Name Server instance within a
   Fibre Channel management instance.





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5.3.  Fabric Index

   The current standard for an interconnecting Fabric consisting of
   multiple Fabric Switch elements is [FC-SW-3], which describes the
   operation of a single Fabric in a physical infrastructure.  It is
   possible that future standards will define how multiple Fabrics could
   operate within one (or more) physical infrastructures.  In such a
   scenario, each Fabric would, of course, have its own management
   instrumentation.  Therefore, to *allow* for this future possibility,
   this MIB defines all Fabric-related information in tables which are
   INDEX-ed by an arbitrary integer, named a "Fabric Index".  In a
   Fabric which is conformant to [FC-SW-3], the value of this Fabric
   Index will always be 1.

5.4.  The MIB Groups

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

5.4.1.  The t11NsDBGroup group

   This group contains information about the operation of the Name
   Server function, including an indication of whether each Name Server
   instance operates local to a particular Fibre Channel switch, or
   independently of any Fibre Channel switch.  It also contains the
   information currently registered with the Name Server.

5.4.2.  The t11NsStatsGroup group

   This group contains Name Server statistics.

5.4.3.  The t11NsNotifyControlGroup group

   This group contains those notification control and notification
   information objects which are required for monitoring Name Server
   registrations/de-registrations.

5.4.4.  The t11NsNotifyGroup group

   This group contains notifications which provide for the monitoring of
   Name Server registrations/de-registrations.

5.5.  The Actual Values of Objects

   The objects defined in the t11NsRegTable represent the values
   registered with the Name Server.  The SNMP agent MUST report the





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   actual values, even if they are incorrectly formatted.  This is the
   reason why, for example, the two objects which represent IP-
   addresses, t11NsNodeIpAddress and t11NsPortIpAddress, have the SYNTAX
   of OCTET STRING, so that they are able to represent invalid values
   (which could not be represented using InetAddressType and
   InetAddress).

   Similarly, each pair of t11NsRejectReasonCode and
   t11NsRejReasonCodeExp objects holds the values of the actual reject
   code and explanation which was present in the generated Reject
   message (the "Reject CT_IU"), irrespective of whether such a reject
   code and explanation were appropriate or not.


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


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

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

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


t11NameServerMIB  MODULE-IDENTITY
    LAST-UPDATED "200407170000Z"
    ORGANIZATION "T11"
    CONTACT-INFO
            "     Claudio DeSanti
                  Cisco Systems, Inc.
                  170 West Tasman Drive
                  San Jose, CA 95134 USA
                  Phone: +1 408 853-9172
                  EMail: cds@cisco.com





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                  Keith McCloghrie
                  Cisco Systems, Inc.
                  170 West Tasman Drive
                  San Jose, CA USA 95134
                  Phone: +1 408-526-5260
                  EMail: kzm@cisco.com"
    DESCRIPTION
           "The MIB module for the management of the functionality,
           which realizes the FC-GS-4 requirements for Name
           Server(NS)."
    REVISION    "200407170000Z"
    DESCRIPTION
           "Initial version of this MIB module."
    ::= { tbd }


t11NsMIBObjects       OBJECT IDENTIFIER ::= { t11NameServerMIB 1 }
t11NsMIBConformance   OBJECT IDENTIFIER ::= { t11NameServerMIB 2 }
t11NsStatus           OBJECT IDENTIFIER ::= { t11NsMIBObjects 1 }
t11NsStatistics       OBJECT IDENTIFIER ::= { t11NsMIBObjects 2 }
t11NsNotifications    OBJECT IDENTIFIER ::= { t11NsMIBObjects 0 }

-- Textual Conventions

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

         none(1)  - no error.
         invalidCmdCode(2) - request contained an invalid
                             command code.
         invalidVerLevel(3) - request containeds an invalid
                              version number.
         logicalError(4) - there was a logical error.
         invalidIUSize(5) - the CT_IU (Information Unit) size
                            was invalid.
         logicalBusy(6) - the module is busy.
         protocolError(7) - there was a protocol error.
         unableToPerformCmdReq(8) - the command specified
                                    in the req could not be
                                    executed. The details
                                    of exactly what failed
                                    will be in the
                                    corresponding reason





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                                    code explanation.
         cmdNotSupported(9) - the command is not
                              supported.
         serverNotAvailable(10) - the identified server was
                                  not available.
         couldNotEstabSession(11) - a server session (i.e.,
                                    using SSE) could not be
                                    established.
         vendorError(12)          - vendor-specific error."
    REFERENCE
          "ANSI INCITS 387-2004, Fibre Channel - Generic
           Services-4 (FC-GS-4), section 4.4.3."
    SYNTAX  INTEGER {
              none(1),
              invalidCmdCode(2),
              invalidVerLevel(3),
              logicalError(4),
              invalidIUSize(5),
              logicalBusy(6),
              protocolError(7),
              unableToPerformCmdReq(8),
              cmdNotSupported(9),
              serverNotAvailable(10),
              couldNotEstabSession(11),
              vendorError(12)
            }

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

         noAdditionalExplanation(1) - no additional
                                      explanation.
         portIdentifierNotRegistered(2) - Port Identifier not
                                          registered.
         portNameNotRegistered(3) - Port Name not registered.
         nodeNameNotRegistered(4) - Node Name not registered.
         classOfServiceNotRegistered(5) - Class of Service
                                          not registered.
         nodeIpAddressNotRegistered(6) - 'IP Address (Node)'
                                         value not registered.
         ipaNotRegistered(7) - Initial Process Associator (IPA)
                               not registered.
         fc4TypeNotRegistered(8) - FC-4 TYPEs not registered.





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





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              hardAddressNotRegistered(14),
              fc4DescriptorNotRegistered(15),
              fc4FeaturesNotRegistered(16),
              accessDenied(17),
              unacceptablePortIdentifier(18),
              databaseEmpty(19),
              noObjectRegInSpecifiedScope(20),
              domainIdNotPresent(21),
              portIdNotPresent(22),
              noDeviceAttached(23),
              authorizationException(24),
              authenticationException(25),
              databaseFull(26)
           }

--
-- Information about a Name Server instance
--

t11NsTable OBJECT-TYPE
    SYNTAX        SEQUENCE OF T11NsEntry
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "This table contains one entry for each instance of
           Name Server functionality within each Fibre Channel
           managed instance."
    ::= { t11NsStatus 1 }

t11NsEntry OBJECT-TYPE
    SYNTAX T11NsEntry
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "An entry in the t11NsTable.  This contains information
           about one Name Server instance within the Fibre Channel
           management instance identified by fcmInstanceIndex."
    INDEX { fcmInstanceIndex, t11NsIndex }
    ::= { t11NsTable 1 }

T11NsEntry ::= SEQUENCE {
    t11NsIndex                 Unsigned32,
    t11NsSwitchIndex           Unsigned32,
    t11NsTableLastChange       TimeStamp,
    t11NsNumRows               Integer32,





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    t11NsTotalRejects          Counter32,
    t11NsRejReqNotifyEnable    TruthValue
}

t11NsIndex OBJECT-TYPE
    SYNTAX        Unsigned32 (1..4294967295)
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "An arbitrary integer value which uniquely identifies
           this Name Server instance amongst all others within the
           same Fibre Channel management instance.

           It is mandatory to keep this value constant between
           restarts of the agent, and to make every possible
           effort to keep it constant across restarts."
    ::= { t11NsEntry 1 }

t11NsSwitchIndex OBJECT-TYPE
    SYNTAX        Unsigned32 (0..4294967295)
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The value of this object is zero when this Name
           Server instance does not operate local to a Fibre
           Channel switch; otherwise, it is non-zero and
           identifies the local switch.

           The switch identified by a non-zero value of this
           object is the same switch as is identified by the
           same value of fcmSwitchIndex."
    REFERENCE
           "fcmSwitchIndex is defined in the FC-MGMT-MIB module"
    ::= { t11NsEntry 2 }

t11NsTableLastChange OBJECT-TYPE
    SYNTAX        TimeStamp
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The value of sysUpTime at the time of the last update
           to any entry in the t11NsRegTable with the same values
           of fcmInstanceIndex and t11NsIndex.  This includes
           creation of an entry, deletion of an entry, or
           modification of an existing entry.  If no such update





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           has taken place since the last re-initialization of the
           local network management subsystem, then this object
           contains a zero value."
    ::= { t11NsEntry 3 }

t11NsNumRows OBJECT-TYPE
    SYNTAX        Integer32 (0..2147483647)
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The number of Nx_Ports currently registered with
           this Name Server instance, i.e., the number of rows
           in the t11NsRegTable with the same values of
           fcmInstanceIndex and t11NsIndex."
    ::= { t11NsEntry 4 }

t11NsTotalRejects OBJECT-TYPE
    SYNTAX        Counter32
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The total number of (CT_IU) Requests for Name Server
           functions which were rejected by this Name Server
           instance, across all Fabrics it serves."
    ::= { t11NsEntry 5 }

t11NsRejReqNotifyEnable OBJECT-TYPE
    SYNTAX        TruthValue
    MAX-ACCESS    read-write
    STATUS        current
    DESCRIPTION
           "This object indicates whether this Name Server
           instance generates 't11NsRejectRegNotify'
           notifications.

           If value of this object is 'true', then the
           notification is generated when a request is rejected.
           If it is 'false', the notification is not generated."
    DEFVAL { false }
    ::= { t11NsEntry 6 }

--
-- Registered Port Information
--






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t11NsRegTable OBJECT-TYPE
    SYNTAX        SEQUENCE OF T11NsRegEntry
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "This table contains entries for all Nx_Ports registered
           with all Name Server instances on all Fabrics on which
           they operate."
    ::= { t11NsStatus 2 }

t11NsRegEntry OBJECT-TYPE
    SYNTAX T11NsRegEntry
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "An entry in the t11NsRegTable, containing information
           about an Nx_Port represented by t11NsRegPortIdentifier
           which is registered with a Name Server instance
           (identified by t11NsIndex) within the Fibre Channel
           management instance (identified by fcmInstanceIndex)
           on the Fabric (identified by t11NsRegFabricIndex)."
    INDEX { fcmInstanceIndex, t11NsIndex,
            t11NsRegFabricIndex, t11NsRegPortIdentifier }
    ::= { t11NsRegTable 1 }

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

t11NsRegFabricIndex OBJECT-TYPE
    SYNTAX               FabricIndex





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    MAX-ACCESS           not-accessible
    STATUS               current
    DESCRIPTION
           "A unique index value which uniquely identifies a
           particular Fabric.

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

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

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

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

t11NsRegNodeName OBJECT-TYPE
    SYNTAX        FcNameIdOrZero
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The Node_Name (WWN) of this Nx_Port.





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           If this object has not been registered, then its value
           is the zero-length string."
    DEFVAL {''H}
    ::= { t11NsRegEntry 4 }

t11NsRegClassOfSvc OBJECT-TYPE
    SYNTAX        FcClasses
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The class of service indicator. This object is a
           array of bits that contain a bit map of the classes of
           service supported by the associated port. If a bit in
           this object is 1, it indicates that the class of
           service is supported by the associated port. When a
           bit is set to 0, it indicates that no class of service
           is supported by this Nx_Port.

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

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

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

           If no 'IP address (Node)' has been registered, then the
           value of this object is the zero-length string."
    REFERENCE
          "ANSI INCITS 387-2004, Fibre Channel - Generic
           Services-3 (FC-GS-4)"
    DEFVAL  { ''H }
    ::= { t11NsRegEntry 6 }





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

           If no 'Initial Process Associator' has been registered,
           then the value of this object is the zero-length string."
    REFERENCE
          "ANSI INCITS 387-2004, Fibre Channel - Generic
           Services-3 (FC-GS-4)"
    DEFVAL  { ''H }
    ::= { t11NsRegEntry 7 }

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

           If no 'FC-4 TYPEs' has been registered, then the value
           of this object is the zero-length string."
    REFERENCE
           "ANSI INCITS 387-2004, Fibre Channel - Generic
           Services-3 (FC-GS-4)"
    DEFVAL  { ''H }
    ::= { t11NsRegEntry 8 }

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

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





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    ::= { t11NsRegEntry 9 }

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

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

           If no 'IP address (Port)' has been registered, then the
           value of this object is the zero-length string."
    REFERENCE
           "ANSI INCITS 387-2004, Fibre Channel - Generic
           Services-3, (FC-GS-4)"
    DEFVAL {''H}
    ::= { t11NsRegEntry 10 }

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

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

t11NsRegHardAddress OBJECT-TYPE
    SYNTAX        FcAddressIdOrZero
    MAX-ACCESS    read-only
    STATUS        current





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    DESCRIPTION
           "The format of this object is identical to the format
           of Hard Address defined in the Discover Address (ADISC)
           Extended Link Service (FC-FS).
           Hard Address is the 24-bit NL_Port identifier which
           consists of
             - the 8-bit Domain_ID in the most significant byte
             - the 8-bit Area Id in the next most significant
               byte
             - the 8-bit AL-PA(Arbitrated Loop Physical Address)
               which an NL_Port attempts acquire during FC-AL
               initialization in the least significant byte.

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

           If no 'Hard Address' has been registered, then the
           value of this object is the zero-length string."
    DEFVAL {''H}
    ::= { t11NsRegEntry 12 }

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

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

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

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





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t11NsRegFc4Features OBJECT-TYPE
    SYNTAX        OCTET STRING (SIZE (0 | 32))
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The FC-4 Features associated with this port and the
           FC-4 Type. Refer to FC-GS-4 specification for the
           format of this object.
           This object is an array of 4-bit values, one for each
           TYPE code value.
           The 5 most significant bits of the TYPE field will be
           used to identify the word for the FC-4 Features object.
                 - Word 0 contains information related to TYPE
                   code '00' through '07';
                 - Word 1 contains information related to TYPE
                   code '08' through 0F';
                 - and so forth to Word 31 that contains
                   information related to TYPE code 'F8'
                   through 'FF'.
           The 3 least significant bits of the TYPE field will be
           used to identify the position within the word for the
           4-bit FC-4 Features value.

           If no 'FC-4 Features' has been registered, then
           the value of this object is the zero length string."
    REFERENCE
           "ANSI INCITS 387-2004, Fibre Channel - Generic
           Services-3 (FC-GS-4)"
    DEFVAL {''H}
    ::= { t11NsRegEntry 15 }


--
-- Registered FC-4 Descriptors
--

t11NsRegFc4DescriptorTable OBJECT-TYPE
    SYNTAX        SEQUENCE OF T11NsRegFc4DescriptorEntry
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "This table contains entries for all FC-4 Descriptors
           registered with Name Server instances on
           all Fabrics on which they operate."
    ::= { t11NsStatus 3 }





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t11NsRegFc4DescriptorEntry OBJECT-TYPE
    SYNTAX        T11NsRegFc4DescriptorEntry
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "An entry in the t11NsRegFc4DescriptorTable,
           containing information about a FC-4 Descriptor
           which is associated with a particular FC-4 Type
           value.  The particular FC-4 Descriptor was
           registered by an Nx_Port (identified by
           t11NsRegPortIdentifier) with a Name Server instance
           (identified by t11NsIndex) within the Fibre Channel
           management instance (identified by fcmInstanceIndex)
           on the Fabric (identified by t11NsRegFabricIndex).

           If no FC-4 Descriptors have been registered
           for a particular port, then there will be no
           entries in this table for that port."
    INDEX { fcmInstanceIndex, t11NsIndex,
            t11NsRegFabricIndex, t11NsRegPortIdentifier,
            t11NsRegFc4TypeValue }
    ::= { t11NsRegFc4DescriptorTable 1 }

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

t11NsRegFc4TypeValue OBJECT-TYPE
    SYNTAX          Unsigned32
    MAX-ACCESS      not-accessible
    STATUS          current
    DESCRIPTION
           "An integer value which identifies an FC-4 Type value
           for which an FC-4 Descriptor has been registered.

           An instance of this object contains the 'Type value'
           to which one of the 256 bits in a t11NsRegFc4Type value
           corresponds."
    ::= { t11NsRegFc4DescriptorEntry 1 }

t11NsRegFc4Descriptor OBJECT-TYPE
    SYNTAX        OCTET STRING (SIZE (0..255))
    MAX-ACCESS    read-only
    STATUS        current





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    DESCRIPTION
           "The FC-4 Descriptor value which has been registered
           for the particular port on the particular fabric, and
           for the FC-4 Type represented by the corresponding
           value of t11NsRegFc4TypeIndex.

           The format of an FC-4 Descriptor is dependent on the
           corresponding FC-4 Type value."
    REFERENCE
           "ANSI INCITS 387-2004, Fibre Channel - Generic
           Services-3 (FC-GS-4), section 5.2.5.42"
    ::= { t11NsRegFc4DescriptorEntry 2 }


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

t11NsStatsTable OBJECT-TYPE
    SYNTAX        SEQUENCE OF T11NsStatsEntry
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "This table contains per-Fabric state and statistics
           maintained by Name Server instances."
    ::= { t11NsStatistics 1 }

t11NsStatsEntry OBJECT-TYPE
    SYNTAX        T11NsStatsEntry
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "An entry in this table, containing state and stats
           for a Name Server instance (identified by t11NsIndex)
           within the Fibre Channel management instance
           (identified by fcmInstanceIndex) on the Fabric
           (identified by t11NsRegFabricIndex)."
    INDEX { fcmInstanceIndex, t11NsIndex, t11NsRegFabricIndex }
    ::= { t11NsStatsTable 1 }

T11NsStatsEntry ::=  SEQUENCE {
    t11NsInGetReqs                Counter32,
    t11NsOutGetReqs               Counter32,
    t11NsInRegReqs                Counter32,
    t11NsInDeRegReqs              Counter32,





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    t11NsInRscns                  Counter32,
    t11NsOutRscns                 Counter32,
    t11NsRejects                  Counter32,
    t11NsDatabaseFull             TruthValue
 }

t11NsInGetReqs OBJECT-TYPE
    SYNTAX        Counter32
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The total number of (CT_IU) Get Requests
           received by the Name Server instance on this
           Fabric."
    ::= { t11NsStatsEntry 1 }

t11NsOutGetReqs OBJECT-TYPE
    SYNTAX        Counter32
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The total number of (CT_IU) Get Requests sent by
           the Name Server instance on this Fabric."
    ::= { t11NsStatsEntry 2 }

t11NsInRegReqs OBJECT-TYPE
    SYNTAX        Counter32
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The total number of (CT_IU) Registration Requests
           received by the Name Server instance on this Fabric."
    ::= { t11NsStatsEntry 3 }

t11NsInDeRegReqs OBJECT-TYPE
    SYNTAX        Counter32
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The total number of (CT_IU) De-registration Requests
           received by the Name Server instance on this Fabric."
    ::= { t11NsStatsEntry 4 }

t11NsInRscns OBJECT-TYPE
    SYNTAX        Counter32





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    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The total number of RSCNs, indicating Name
           Server-related changes, received by the Name Server
           instance on this Fabric."
    ::= { t11NsStatsEntry 5 }

t11NsOutRscns OBJECT-TYPE
    SYNTAX        Counter32
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The total number of RSCNs, indicating Name
           Server-related changes, sent by the Name Server
           instance on this Fabric."
    ::= { t11NsStatsEntry 6 }

t11NsRejects OBJECT-TYPE
    SYNTAX        Counter32
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "The total number of CT_IU Requests for Name
           Server functions which were rejected by the Name
           Server instance on this Fabric."
    ::= { t11NsStatsEntry 7 }

t11NsDatabaseFull OBJECT-TYPE
    SYNTAX        TruthValue
    MAX-ACCESS    read-only
    STATUS        current
    DESCRIPTION
           "An indication of whether the Name Server instance's
           database is full.  This object is set to 'true' only
           if the Name Server is unable to allocate space for a
           new entry for the corresponding Fabric, and set to
           'false' whenever an existing entry is deleted for the
           corresponding Fabric."
    ::= { t11NsStatsEntry 8 }

--
-- Reject information objects
--






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

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

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

t11NsRejectEntry OBJECT-TYPE
    SYNTAX T11NsRejectEntry
    MAX-ACCESS    not-accessible
    STATUS        current
    DESCRIPTION
           "An entry in the t11NsRejectTable containing information
           about the most recent Registration request rejected by
           a Name Server instance (identified by t11NsIndex)
           within the Fibre Channel management instance (identified
           by fcmInstanceIndex) for a particular port (identified by
           t11NsRegPortIdentifier) on a particular fabric (identified by
           t11NsRegFabricIndex)."
    INDEX { fcmInstanceIndex, t11NsIndex,
            t11NsRegFabricIndex, t11NsRegPortIdentifier }
    ::= { t11NsRejectTable 1 }

T11NsRejectEntry ::= SEQUENCE {
    t11NsRejectCtCommandString   OCTET STRING,
    t11NsRejectReasonCode        T11NsGs4RejectReasonCode,
    t11NsRejReasonCodeExp        T11NsRejReasonCodeExpl
}

t11NsRejectCtCommandString OBJECT-TYPE
    SYNTAX        OCTET STRING (SIZE (0..255))
    MAX-ACCESS    read-only





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    STATUS        current
    DESCRIPTION
           "The binary content of the Registration Request,
           formatted as an octet string (in network byte
           order) containing the CT_IU, as described in
           Table 2 of [FC-GS-4] (including the preamble),
           which was most recently rejected by the
           Name Server instance for the particular port
           on the particular fabric.

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

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

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

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


--
-- Notifications
--

t11NsRejectRegNotify NOTIFICATION-TYPE





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    OBJECTS   { t11NsRegPortName, t11NsRejectCtCommandString,
                t11NsRejectReasonCode, t11NsRejReasonCodeExp }
    STATUS    current
    DESCRIPTION
           "This notification is generated by a Name Server
           instance (if its t11NsRejReqNotifyEnable is 'true')
           whenever it rejects a registration request on a
           particular fabric for a particular Nx_Port.
           The value of t11NsRejectCtCommandString indicates
           the rejected request, and the values of
           t11NsRejectReasonCode and t11NsRejReasonCodeExp
           indicate the reason for the rejection.

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

--
-- Conformance
--

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

t11NsMIBCompliance MODULE-COMPLIANCE
    STATUS    current
    DESCRIPTION
           "The compliance statement for entities which
           implement the Fibre Channel Name Server."
    MODULE MANDATORY-GROUPS {t11NsDBGroup,
                             t11NsStatsGroup,
                             t11NsNotifyControlGroup,
                             t11NsNotifyGroup}

      OBJECT t11NsRejReqNotifyEnable
      MIN-ACCESS read-only
      DESCRIPTION
             "Write access is not required."

    ::= { t11NsMIBCompliances 1 }

-- Units of conformance






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t11NsDBGroup        OBJECT-GROUP
    OBJECTS { t11NsSwitchIndex,
              t11NsTableLastChange,
              t11NsNumRows,
              t11NsRegPortName,
              t11NsRegNodeName,
              t11NsRegClassOfSvc,
              t11NsRegNodeIpAddress,
              t11NsRegProcAssoc,
              t11NsRegFc4Type,
              t11NsRegPortType,
              t11NsRegPortIpAddress,
              t11NsRegFabricPortName,
              t11NsRegHardAddress,
              t11NsRegSymbolicPortName,
              t11NsRegSymbolicNodeName,
              t11NsRegFc4Features,
              t11NsRegFc4Descriptor }
    STATUS current
    DESCRIPTION
           "A collection of objects for monitoring the information
           registered with the Name Server."
    ::= { t11NsMIBGroups 1 }

t11NsStatsGroup         OBJECT-GROUP
    OBJECTS { t11NsTotalRejects,
              t11NsInGetReqs,
              t11NsOutGetReqs,
              t11NsInRegReqs,
              t11NsInDeRegReqs,
              t11NsInRscns,
              t11NsOutRscns,
              t11NsRejects,
              t11NsDatabaseFull}
    STATUS current
    DESCRIPTION
           "A collection of objects for displaying Name
           Server statistics and state."
    ::= { t11NsMIBGroups 2 }

t11NsNotifyControlGroup        OBJECT-GROUP
    OBJECTS { t11NsRejectCtCommandString,
              t11NsRejectReasonCode,
              t11NsRejReasonCodeExp,
              t11NsRejReqNotifyEnable }





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    STATUS current
    DESCRIPTION
           "A collection of notification control and
           notification information objects for monitoring
           Name Server registrations/de-registrations."
    ::= { t11NsMIBGroups 3 }

t11NsNotifyGroup        NOTIFICATION-GROUP
    NOTIFICATIONS {t11NsRejectRegNotify }
    STATUS current
    DESCRIPTION
           "A collection of notifications for monitoring
           Name Server registrations/de-registrations."
    ::= { t11NsMIBGroups 4 }

END



7.  Intellectual Property

   The IETF takes no position regarding the validity or scope of any
   intellectual property 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; neither does it represent that it
   has made any effort to identify any such rights.  Information on the
   IETF's procedures with respect to rights in standards-track and
   standards-related documentation can be found in BCP-11.  Copies of
   claims of rights made available for publication 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 implementors or users of this specification can
   be obtained from the IETF Secretariat.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights which may cover technology that may be required to practice
   this standard.  Please address the information to the IETF Executive
   Director.










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8.  Acknowledgements

   This document is currently 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, VERITAS
      T11.5 members, especially:
          Ken Hirata, Emulex
          Scott Kipp, McData
          Michael O'Donnell, McData
          Elizabeth G. Rodriguez, Dot Hill
          Steven L. Wilson, Brocade

9.  Normative References

[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.

[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.

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

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






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[FC-GS-4]
     "Fibre Channel - Generic Services - 4 (FC-GS-4)", ANSI INCITS
     387-2004, T11/Project 1505-D/Rev 7.91 Febrauary 2004.

[FC-SW-3]
     "Fibre Channel - Switch Fabric - 3 (FC-SW-3)", ANSI NCITS xxx-xxxx,
     T11/Project 1508-D/Rev 6.6, December 2003.

[FC-MGMT]
     K. McCloghrie, "Fibre Channel Management MIB", Internet-Draft
     (draft-ietf-ips-fcmgmt-mib-nn.txt), work-in-progress.

[FC-FAM-MIB]
     DeSanti, C., Gaonkar, V., McCloghrie, K., and S. Gai, "Fibre-
     Channel Fabric Address Manager MIB", Internet-Draft (draft-desanti-
     fc-fabric-addr-mgr-nn.txt), work-in-progress.


10.  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.


11.  Security Considerations

   There is one management object defined in this MIB module with a MAX-
   ACCESS clause of read-write and/or read-create.  Such objects may be
   considered sensitive or vulnerable in some network environments.  The
   support for SET operations in a non-secure environment without proper
   protection can have a negative effect on network operations.  This
   object and its sensitivity/vulnerability is:

   t11NsRejReqNotifyEnable -- the ability to enable/disable
   notifications.

Such objects may be considered sensitive or vulnerable in some network
environments.  For example, the ability to change network topology or
network speed may afford an attacker the ability to obtain better





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performance at the expense of other network users.  The support for SET
operations in a non-secure environment without proper protection can
have a negative effect on network operations.

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

     t11NsRegTable -- contains information about registered Nx_Ports.

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

SNMP versions prior to SNMPv3 did not include adequate security.  Even
if the network itself is secure (for example by using IPSec), even then,
there is no control as to who on the secure network is allowed to access
and GET/SET (read/change/create/delete) the objects in this MIB module.

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

Further, deployment of SNMP versions prior to SNMPv3 is NOT RECOMMENDED.
Instead, it is RECOMMENDED to deploy SNMPv3 and to enable cryptographic
security.  It is then a customer/operator responsibility to ensure that
the SNMP entity giving access to an instance of this MIB module is
properly configured to give access to the objects only to those
principals (users) that have legitimate rights to indeed GET or SET
(change/create/delete) them.
















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12.  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

     Vinay Gaonkar
     Cisco Systems, Inc.
     170 West Tasman Drive
     San Jose, CA 95134 USA
     Phone: +1 408 527-8576
     EMail: vgaonkar@cisco.com

     H.K. Vivek
     Cisco Systems, Inc.
     71 Millers Rd
     Bangalore, India
     Phone: +91 80 2289933x5117
     EMail: hvivek@cisco.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
     Cisco Systems, Inc.
     170 West Tasman Drive
     San Jose, CA USA 95134
     Phone: +1 408-526-7269
     Email: sgai@cisco.com














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13.  Full Copyright Statement

Copyright (C) The Internet Society (2004).  All Rights Reserved.

This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it or
assist in its implementation may be prepared, copied, published and
distributed, in whole or in part, without restriction of any kind,
provided that the above copyright notice and this paragraph are included
on all such copies and derivative works.  However, this document itself
may not be modified in any way, such as by removing the copyright notice
or references to the Internet Society or other Internet organizations,
except as needed for the purpose of developing Internet standards in
which case the procedures for copyrights defined in the Internet
Standards process must be followed, or as required to translate it into
languages other than English.

The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.

This document and the information contained herein is provided on an "AS
IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK
FORCE DISCLAIMS 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.
























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