rfc1743.txt

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Network Working Group                                      K. McCloghrie
Request for Comments: 1743                                     E. Decker
Obsoletes: 1231                                      cisco Systems, Inc.
Category: Standards Track                                  December 1994


                       IEEE 802.5 MIB using SMIv2

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Table of Contents

   1. Introduction .............................................    1
   2. The SNMPv2 Network Management Framework ..................    2
   2.1 Object Definitions ......................................    2
   3. Overview .................................................    2
   3.1 MAC Addresses ...........................................    3
   3.2 Relationship to RFC 1213 ................................    3
   3.3 Relationship to RFC 1573 ................................    3
   3.3.1 Layering Model ........................................    3
   3.3.2 Virtual Circuits ......................................    3
   3.3.3 ifTestTable ...........................................    3
   3.3.4 ifRcvAddressTable .....................................    4
   3.3.5 ifPhysAddress .........................................    4
   3.3.6 ifType ................................................    4
   4. Definitions ..............................................    4
   5. Acknowledgements .........................................   23
   6. References ...............................................   23
   Appendix A. Changes from RFC 1231 ...........................   24
   Security Considerations .....................................   24
   Authors' Addresses ..........................................   25

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 used for managing
   subnetworks which use the IEEE 802.5 Token Ring technology described
   in 802.5 Token Ring Access Method and Physical Layer Specifications,
   IEEE Standard 802.5-1989 [7].  This memo is a replacement for RFC
   1231.




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RFC 1743               IEEE 802.5 MIB using SMIv2          December 1994


2.  The SNMPv2 Network Management Framework

   The SNMPv2 Network Management Framework consists of four major
   components.  They are:

      o    RFC 1442 [1] which defines the SMI, the mechanisms used for
           describing and naming objects for the purpose of management.

      o    STD 17, RFC 1213 [2] defines MIB-II, the core set of managed
           objects for the Internet suite of protocols.

      o    RFC 1445 [3] which defines the administrative and other
           architectural aspects of the framework.

      o    RFC 1448 [4] which defines the protocol used for network
           access to managed objects.

   The Framework permits new objects to be defined for the purpose of
   experimentation and evaluation.

2.1.  Object Definitions

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the subset of Abstract Syntax Notation One (ASN.1)
   defined in the SMI.  In particular, each object type is named by an
   OBJECT IDENTIFIER, an administratively assigned name.  The object
   type together with an object instance serves to uniquely identify a
   specific instantiation of the object.  For human convenience, we
   often use a textual string, termed the descriptor, to refer to the
   object type.

3.  Overview

   This memo defines three tables: the 802.5 Interface Table, which
   contains state and parameter information which is specific to 802.5
   interfaces, the 802.5 Statistics Table, which contains 802.5
   interface statistics, and the 802.5 Timer Table, which contains the
   values of 802.5-defined timers. A managed system will have one entry
   in the 802.5 Interface Table and one entry in the 802.5 Statistics
   Table for each of its 802.5 interfaces.  The 802.5 Timer Table is
   obsolete, but its definition has been retained in this memo for
   backward compatibility.

   This memo also defines OBJECT IDENTIFIERs, some to identify interface
   tests for use with the ifTestTable [6], and some to identify Token
   Ring interface Chip Sets.




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3.1.  MAC Addresses

   All representations of MAC addresses in this MIB Module use the
   MacAddress textual convention [5] for which the address is in the
   "canonical" order defined by IEEE 802.1a, i.e., as if it were
   transmitted least significant bit first, even though 802.5 requires
   MAC addresses to be transmitted most significant bit first.

   16-bit addresses, if needed, are represented by setting their upper 4
   octets to all zeros, i.e., AAFF would be represented as 00000000AAFF.

3.2.  Relationship to RFC 1213

   When this MIB module is used in conjunction with the "old" (i.e.,
   pre-RFC 1573) interfaces group, the relationship between an 802.5
   interface and an interface in the context of the RFC 1213 is one-
   to-one.  That is, the value of an ifIndex object instance for an
   802.5 interface can be directly used to identify corresponding
   instances of the objects defined in this memo.

3.3.  Relationship to RFC 1573

   RFC 1573, the Interface MIB Evolution, requires that any MIB module
   which is an adjunct of the Interface MIB, clarify specific areas
   within the Interface MIB.  These areas were intentionally left vague
   in RFC 1573 to avoid over constraining the MIB module, thereby
   precluding management of certain media-types.

   Section 3.3 of RFC 1573 enumerates several areas which a media-
   specific MIB module must clarify.  Each of these areas is addressed
   in a following subsection.  The implementor is referred to RFC 1573
   in order to understand the general intent of these areas.

3.3.1.  Layering Model

   For the typical usage of this IEEE 802.5 MIB module, there will be no
   sub-layers "above" or "below" the 802.5 interface.  However, this MIB
   module does not preclude such layering.

3.3.2.  Virtual Circuits

   802.5 does not support virtual circuits.

3.3.3.  ifTestTable

   This MIB module defines two tests for 802.5 interfaces: Insertion and
   Loopback.  Implementation of these tests is not required.




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3.3.4.  ifRcvAddressTable

   The ifRcvAddressTable is defined to contains all MAC addresses,
   unicast, multicast (group) and broadcast, for which an interface will
   receive packets.  For 802.5 interfaces, its use includes functional
   addresses. The format of the address, contained in
   ifRcvAddressAddress, is the same as for ifPhysAddress.

   For functional addresses on a particular 802.5 interface, only one
   ifRcvAddressTable entry is required.  That entry is the one for the
   address which has the functional address bit ANDed with the bit mask
   of all functional addresses for which the interface will accept
   frames.

3.3.5.  ifPhysAddress

   For an 802.5 interface, ifPhysAddress contains the interface's IEEE
   MAC address, stored as an octet string of length 6, in IEEE 802.1a
   "canonical" order, i.e., the Group Bit is positioned as the low-order
   bit (0x01) of the first octet.

3.3.6.  ifType

   The objects defined in this memo apply to each interface for which
   the ifType has the value:

                  iso88025-tokenRing(9)

4.  Definitions

TOKENRING-MIB DEFINITIONS ::= BEGIN

IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY,
    Counter32, Integer32                 FROM SNMPv2-SMI
    transmission                         FROM RFC1213-MIB
    MacAddress,TimeStamp                 FROM SNMPv2-TC
    MODULE-COMPLIANCE, OBJECT-GROUP      FROM SNMPv2-CONF;

dot5 MODULE-IDENTITY
    LAST-UPDATED "9410231150Z"
    ORGANIZATION "IETF Interfaces MIB Working Group"
    CONTACT-INFO
            "        Keith McCloghrie

             Postal: cisco Systems, Inc.
                     170 West Tasman Drive,
                     San Jose, CA 95134-1706



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RFC 1743               IEEE 802.5 MIB using SMIv2          December 1994


                     US

              Phone: [phone]
              EMail: [e-mail]"
    DESCRIPTION
        "The MIB module for IEEE Token Ring entities."
    ::= { transmission 9 }


--              The 802.5 Interface Table

-- This table contains state and parameter information which
-- is specific to 802.5 interfaces.  It is mandatory that
-- systems having 802.5 interfaces implement this table in
-- addition to the ifTable (see RFCs 1213 and 1573).

dot5Table       OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot5Entry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
            "This table contains Token Ring interface
            parameters and state variables, one entry
            per 802.5 interface."
    ::= { dot5 1 }

dot5Entry       OBJECT-TYPE
    SYNTAX      Dot5Entry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
            "A list of Token Ring status and parameter
             values for an 802.5 interface."
    INDEX       { dot5IfIndex }
    ::= { dot5Table 1 }

Dot5Entry ::= SEQUENCE {
     dot5IfIndex              Integer32,
     dot5Commands             INTEGER,
     dot5RingStatus           INTEGER,
     dot5RingState            INTEGER,
     dot5RingOpenStatus       INTEGER,
     dot5RingSpeed            INTEGER,
     dot5UpStream             MacAddress,
     dot5ActMonParticipate    INTEGER,
     dot5Functional           MacAddress,
     dot5LastBeaconSent       TimeStamp
}



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dot5IfIndex     OBJECT-TYPE
    SYNTAX      Integer32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The value of this object identifies the
             802.5 interface for which this entry
             contains management information.  The
             value of this object for a particular
             interface has the same value as the
             ifIndex object, defined in MIB-II for
             the same interface."
    ::= { dot5Entry 1 }

dot5Commands    OBJECT-TYPE
    SYNTAX      INTEGER {
                    noop(1),
                    open(2),
                    reset(3),
                    close(4)
                }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
            "When this object is set to the value of
             open(2), the station should go into the
             open state.  The progress and success of
             the open is given by the values of the
             objects dot5RingState and
             dot5RingOpenStatus.
                 When this object is set to the value
             of reset(3), then the station should do
             a reset.  On a reset, all MIB counters
             should retain their values, if possible.
             Other side affects are dependent on the
             hardware chip set.
                 When this object is set to the value
             of close(4), the station should go into
             the stopped state by removing itself
             from the ring.
                 Setting this object to a value of
             noop(1) has no effect.
                 When read, this object always has a
             value of noop(1).
                 The open(2) and close(4) values
             correspond to the up(1) and down(2) values
             of MIB-II's ifAdminStatus and ifOperStatus,
             i.e., the setting of ifAdminStatus and



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             dot5Commands affects the values of both
             dot5Commands and ifOperStatus."
    ::= { dot5Entry 2 }

dot5RingStatus  OBJECT-TYPE
    SYNTAX      INTEGER (0..262143)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The current interface status which can
            be used to diagnose fluctuating problems
            that can occur on token rings, after a
            station has successfully been added to
            the ring.
               Before an open is completed, this
            object has the value for the 'no status'
            condition.  The dot5RingState and
            dot5RingOpenStatus objects provide for
            debugging problems when the station
            can not even enter the ring.
                The object's value is a sum of
            values, one for each currently applicable
            condition.  The following values are
            defined for various conditions:

                    0 = No Problems detected
                   32 = Ring Recovery
                   64 = Single Station
                  256 = Remove Received
                  512 = reserved
                 1024 = Auto-Removal Error
                 2048 = Lobe Wire Fault
                 4096 = Transmit Beacon
                 8192 = Soft Error
                16384 = Hard Error
                32768 = Signal Loss
               131072 = no status, open not completed."
    ::= { dot5Entry 3 }

dot5RingState   OBJECT-TYPE
    SYNTAX      INTEGER {
                    opened(1),
                    closed(2),
                    opening(3),
                    closing(4),
                    openFailure(5),
                    ringFailure(6)
                }



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    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The current interface state with respect
            to entering or leaving the ring."
    ::= { dot5Entry 4 }

dot5RingOpenStatus  OBJECT-TYPE
    SYNTAX      INTEGER {
                    noOpen(1),     -- no open attempted
                    badParam(2),
                    lobeFailed(3),
                    signalLoss(4),
                    insertionTimeout(5),
                    ringFailed(6),
                    beaconing(7),
                    duplicateMAC(8),
                    requestFailed(9),
                    removeReceived(10),
                    open(11)      -- last open successful
                }
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "This object indicates the success, or the
            reason for failure, of the station's most
            recent attempt to enter the ring."
    ::= { dot5Entry 5 }

dot5RingSpeed   OBJECT-TYPE
    SYNTAX      INTEGER {
                    unknown(1),
                    oneMegabit(2),
                    fourMegabit(3),
                    sixteenMegabit(4)
                }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
            "The ring-speed at the next insertion into
            the ring.  Note that this may or may not be
            different to the current ring-speed which is
            given by MIB-II's ifSpeed.  For interfaces
            which do not support changing ring-speed,
            dot5RingSpeed can only be set to its current
            value.  When dot5RingSpeed has the value
            unknown(1), the ring's actual ring-speed is
            to be used."



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    ::= { dot5Entry 6 }

dot5UpStream    OBJECT-TYPE
    SYNTAX      MacAddress
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The MAC-address of the up stream neighbor
             station in the ring."
    ::= { dot5Entry 7 }

dot5ActMonParticipate OBJECT-TYPE
    SYNTAX      INTEGER {
                    true(1),