RFC1515

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Network Working Group D. McMaster Request for Comments: 1515 SynOptics Communications, Inc.

                                                       K. McCloghrie
                                            Hughes LAN Systems, Inc.
                                                          S. Roberts
                                            Farallon Computing, Inc.
                                                      September 1993
                 Definitions of Managed Objects
         for IEEE 802.3 Medium Attachment Units (MAUs)

Status of this Memo

This RFC 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" for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Abstract

This document defines a portion of the Management Information Base (MIB) for use with network management protocols in TCP/IP-based internets. In particular, it defines objects for managing IEEE 802.3 Medium Attachment Units (MAUs).

The Network Management Framework

The Internet-standard Network Management Framework consists of three components. They are:

  STD 16, RFC 1155 [1] which defines the SMI, the mechanisms used
  for describing and naming objects for the purpose of management.
  STD 16, RFC 1212 [7] defines a more concise description mechanism,
  which is wholly consistent with the SMI.
  STD 17, RFC 1213 [4] which defines MIB-II, the core set of managed
  objects for the Internet suite of protocols.
  STD 15, RFC 1157 [3] which defines the SNMP, the protocol used for
  network access to managed objects.

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

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 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.

Overview

Instances of the object types defined in this document represent attributes of an IEEE 802.3 MAU. Several types of MAUs are defined in the IEEE 802.3/ISO 8802-3 CSMA/CD standard [9].

These MAUs may be connected to IEEE 802.3 repeaters or to 802.3 (Ethernet-like) interfaces. For convenience this document refers to these devices as "repeater MAUs" and "interface MAUs."

The definitions presented here are based on Draft 5 of Section 20 of IEEE P802.3p, "Layer Management for 10 Mb/s Medium Attachment Units

(MAUs), Section 20" [10] dated 11 July 1992.

Terminology

Refer to Section 3.1.2 of [13] for simple definitions of the terms "repeater," "port," and "MAU" as used in the context of this document. For a more complete and precise definition of these terms, refer to Section 9 of [9].

Structure of MIB

Objects in this MIB are arranged into MIB groups. Each MIB group is organized as a set of related objects.

The Repeater MAU Basic Group Definitions

This group contains all repeater MAU-related configuration, status, and control objects. Implementation of the dot3RpMauBasicGroup is mandatory for MAUs attached to repeaters.

The Interface MAU Basic Group Definitions

This group contains all interface MAU-related configuration, status, and control objects. Implementation of the dot3IfMauBasicGroup is mandatory for MAUs attached to interfaces.

The Broadband MAU Basic Group Definitions

This group contains all broadband-specific MAU-related configuration objects. Implementation of the dot3BroadMauBasicGroup is mandatory for 10BROAD36 MAUs, and is not appropriate for other types of MAUs.

Relationship to Other MIBs

It is assumed that an agent implementing this MIB will also implement (at least) the 'system' group defined in MIB-II [4]. The following sections identify other MIBs that such an agent should implement.

Relationship to the 'system' group

In MIB-II, the 'system' group is defined as being mandatory for all systems such that each managed entity contains one instance of each object in the 'system' group. Thus, those objects apply to the entity even if the entity's sole functionality is management of a MAU.

Relationship to the 'interfaces' group

The sections of this document that define interface MAU-related objects specify an extension to the 'interfaces' group of MIB-II [4]. An agent implementing these interface-MAU related objects must also implement the 'interfaces' group of MIB-II. The value of the same as the value of 'ifIndex' used to instantiate the interface to which the given MAU is connected.

It is expected that an agent implementing the interface-MAU related objects in this MIB will also implement the Ethernet-like Interfaces MIB [11].

(Note that repeater ports are not represented as interfaces in the sense of MIB-II's 'interfaces' group. See section 3.4.2 of the repeater MIB [12] for more details.)

Relationship to the 802.3 Repeater MIB

The section of this document that defines repeater MAU-related objects specifies an extension to the 802.3 Repeater MIB defined in [13]. An agent implementing these repeater-MAU related objects must also implement the 802.3 Repeater MIB.

The values of 'rpMauGroupIndex' and 'rpMauPortIndex' used to instantiate a repeater MAU variable shall be the same as the values of 'rptrPortGroupIndex' and 'rptrPortIndex' used to instantiate the port to which the given MAU is connected.

Management of Internal MAUs

In some situations, a MAU can be "internal" -- i.e., its functionality is implemented entirely within a device. For example, a managed repeater may contain an internal repeater- MAU and/or an internal interface-MAU through which management communications originating on one of the repeater's external ports pass in order to reach the management agent associated with the repeater. Such internal MAUs may or may not be managed. If they are managed, objects describing their attributes should appear in the appropriate MIB group -- dot3RpMauBasicGroup for internal repeater-MAUs and dot3IfMauBasicGroup for internal interface-MAUs.

Definitions

    MAU-MIB DEFINITIONS ::= BEGIN
    IMPORTS
        Counter                             FROM RFC1155-SMI
        OBJECT-TYPE                         FROM RFC-1212
        TRAP-TYPE                           FROM RFC-1215;
    snmpDot3MauMgt OBJECT IDENTIFIER ::= { mib-2 26 }
    --                      References
    --
    -- The following references are used throughout this MIB:
    --
    -- [[[RFC1213|RFC 1213]]]
    --    refers to McCloghrie, K., and M. Rose, Editors,
    --    Management Information Base for Network Management
    --    of TCP/IP-based internets: MIB-II, STD 17, RFC 1213,
    --    Hughes LAN Systems, Performance Systems International,
    --    March 1991.
    --
    -- [[[RFC1368|RFC 1368]]]
    --    refers to McMaster, D.,  and K. McCloghrie, Editors,
    --    Definitions of Managed Objects for IEEE 802.3 Repeater
    --    Devices, RFC 1368, SynOptics Communications, Hughes
    --    LAN Systems, October 1992.
    --
    -- [IEEE 802.3 MAU Mgt]
    --    refers to IEEE P802.3p, 'Layer Management for 10 Mb/s
    --    Medium Access Unit (MAUs), Section 20,' Draft Supplement
    --    to ANSI/IEEE 802.3, Draft 5, 11 July 1992.
    --                      MIB Groups
    --
    --   The dot3RpMauBasicGroup is mandatory for MAUs attached to
    --     repeaters.
    --   The dot3IfMauBasicGroup is mandatory for MAUs attached to
    --     DTEs (interfaces).
    --   The dot3BroadMauBasicGroup is mandatory for broadband MAUs
    --     attached to DTEs.
    dot3RpMauBasicGroup
        OBJECT IDENTIFIER ::= { snmpDot3MauMgt 1 }
    dot3IfMauBasicGroup
        OBJECT IDENTIFIER ::= { snmpDot3MauMgt 2 }
    dot3BroadMauBasicGroup
        OBJECT IDENTIFIER ::= { snmpDot3MauMgt 3 }
    -- object identifiers for MAU types
    --  (see rpMauType and ifMauType for usage)
    dot3MauType
        OBJECT IDENTIFIER ::= { snmpDot3MauMgt 4 }
    dot3MauTypeAUI        -- no internal MAU, view from AUI
        OBJECT IDENTIFIER ::= { dot3MauType 1 }
    dot3MauType10Base5    -- thick coax MAU (per 802.3 section 8)
        OBJECT IDENTIFIER ::= { dot3MauType 2 }
    dot3MauTypeFoirl      -- FOIRL MAU (per 802.3 section 9.9)
        OBJECT IDENTIFIER ::= { dot3MauType 3 }
    dot3MauType10Base2    -- thin coax MAU (per 802.3 section 10)
        OBJECT IDENTIFIER ::= { dot3MauType 4 }
    dot3MauType10BaseT    -- UTP MAU (per 802.3 section 14)
        OBJECT IDENTIFIER ::= { dot3MauType 5 }
    dot3MauType10BaseFP   -- passive fiber MAU (per 802.3 section 16)
        OBJECT IDENTIFIER ::= { dot3MauType 6 }
    dot3MauType10BaseFB   -- sync fiber MAU (per 802.3 section 17)
        OBJECT IDENTIFIER ::= { dot3MauType 7 }
    dot3MauType10BaseFL   -- async fiber MAU (per 802.3 section 18)
        OBJECT IDENTIFIER ::= { dot3MauType 8 }
    dot3MauType10Broad36  -- broadband DTE MAU (per 802.3 section 11)
        -- note that 10BROAD36 MAUs can be attached to interfaces but
        -- not to repeaters
        OBJECT IDENTIFIER ::= { dot3MauType 9 }
    --
    --                    The Repeater MAU Basic Group
    --
    -- Implementation of the Repeater MAU Basic Group is mandatory
    -- for MAUs attached to repeaters.
    --
    -- The Basic Repeater MAU Table
    --
    rpMauTable OBJECT-TYPE
        SYNTAX    SEQUENCE OF RpMauEntry
        ACCESS    not-accessible
        STATUS    mandatory
        DESCRIPTION
                "Table of descriptive and status information about
                the MAU(s) attached to the ports of a repeater."
        ::= { dot3RpMauBasicGroup 1 }
    rpMauEntry OBJECT-TYPE
        SYNTAX    RpMauEntry
        ACCESS    not-accessible
        STATUS    mandatory
        DESCRIPTION
                "An entry in the table, containing information
                about a single MAU."
        INDEX    { rpMauGroupIndex, rpMauPortIndex, rpMauIndex }
        ::= { rpMauTable 1 }
    RpMauEntry ::=
        SEQUENCE {
            rpMauGroupIndex
                INTEGER,
            rpMauPortIndex
                INTEGER,
            rpMauIndex
                INTEGER,
            rpMauType
                OBJECT IDENTIFIER,
            rpMauStatus
                INTEGER,
            rpMauMediaAvailable
                INTEGER,
            rpMauMediaAvailableStateExits
                Counter,
            rpMauJabberState
                INTEGER,
            rpMauJabberingStateEnters
                Counter
        }
    rpMauGroupIndex OBJECT-TYPE
        SYNTAX    INTEGER (1..1024)
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This variable uniquely identifies the repeater
                group containing the port to which the MAU
                described by this entry is connected."
        REFERENCE
                "Reference RFC1368, rptrGroupIndex."
        ::= { rpMauEntry 1 }
    rpMauPortIndex OBJECT-TYPE
        SYNTAX    INTEGER (1..1024)
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This variable uniquely identifies the repeater
                port within group rpMauGroupIndex to which the MAU
                described by this entry is connected."
        REFERENCE
                "Reference RFC 1368, rptrPortIndex."
        ::= { rpMauEntry 2 }
    rpMauIndex OBJECT-TYPE
        SYNTAX    INTEGER (1..9)
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This variable uniquely identifies the MAU
                connected to port rpMauPortIndex within group
                rpMauGroupIndex that is described by this entry."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2, aMAUID."
        ::= { rpMauEntry 3 }
    rpMauType OBJECT-TYPE
        SYNTAX    OBJECT IDENTIFIER
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This object identifies the 10 Mb/s baseband MAU
                type.  An initial set of MAU types are defined
                above.  The assignment of OBJECT IDENTIFIERs to
                new types of MAUs is managed by the IANA.  If the
                MAU type is unknown, the object identifier
                    unknownMauType OBJECT IDENTIFIER ::= { 0 0 }
                is returned.  Note that unknownMauType is a
                syntactically valid object identifier, and any
                conformant implementation of ASN.1 and the BER
                must be able to generate and recognize this
                value."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aMAUType."
        ::= { rpMauEntry 4 }
    rpMauStatus OBJECT-TYPE
        SYNTAX    INTEGER {
                      other(1),
                      unknown(2),
                      operational(3),
                      standby(4),
                      shutdown(5),
                      reset(6)
                  }
        ACCESS    read-write
        STATUS    mandatory
        DESCRIPTION
                "The current state of the MAU.  This object may be
                implemented as a read-only object by those agents
                and MAUs that do not implement software control of
                the MAU state.  Some agents may not support
                setting the value of this object to some of the
                enumerated values.
                The value other(1) is returned if the MAU is in a
                state other than one of the states 2 through 6.
                The value unknown(2) is returned when the MAU's
                true state is unknown; for example, when it is
                being initialized.
                A MAU in the operational(3) state is fully
                functional, operates, and passes signals to its
                attached DTE or repeater port in accordance to its
                specification.
                A MAU in standby(4) state forces DI and CI and the
                media transmitter to idle.  Standby(4) mode only
                applies to link type MAUs.  The state of
                rpMauMediaAvailable is unaffected.
                A MAU in shutdown(5) state assumes the same
                condition on DI, CI, and the media transmitter as
                though it were powered down.  The MAU may return
                other(1) value for the mauJabber and
                rpMauMediaAvailable objects when it is in this
                state.  For an AUI, this state will remove power
                from the AUI.
                Setting this variable to the value reset(6) resets
                the MAU in the same manner as a power-off, power-
                on cycle of at least one-half second would.  The
                agent is not required to return the value reset
                (6).
                Setting this variable to the value operational(3),
                standby(4), or shutdown(5) causes the MAU to
                assume the respective state except that setting a
                mixing-type MAU or an AUI to standby(4) will cause
                the MAU to enter the shutdown state."
            REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aMAUAdminState, and 20.2.3.3, acMAUAdminControl
                and acResetMAUAction."
        ::= { rpMauEntry 5 }
    rpMauMediaAvailable OBJECT-TYPE
        SYNTAX    INTEGER {
                      other(1),
                      unknown(2),
                      available(3),
                      notAvailable(4),
                      remoteFault(5),
                      invalidSignal(6)
                  }
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "If the MAU is a link or fiber type (FOIRL,
                10BASE-T, 10BASE-F) then this is equivalent to the
                link test fail state/low light function.  For an
                AUI or a coax (including broadband) MAU this
                indicates whether or not loopback is detected on
                the DI circuit.  The value of this attribute
                persists between packets for MAU types AUI,
                10BASE5, 10BASE2, 10BROAD36, and 10BASE-FP.
                The value other(1) is returned if the
                mediaAvailable state is not one of 2 through 6.
                The value unknown(2) is returned when the MAU's
                true state is unknown; for example, when it is
                being initialized.  At power-up or following a
                reset, the value of this attribute will be unknown
                for AUI, coax, and 10BASE-FP MAUs.  For these MAUs
                loopback will be tested on each transmission
                during which no collision is detected.  If DI is
                receiving input when DO returns to IDL after a
                transmission and there has been no collision
                during the transmission then loopback will be
                detected.  The value of this attribute will only
                change during non-collided transmissions for AUI,
                coax, and 10BASE-FP MAUs.
                The value available(3) indicates that the link,
                light, or loopback is normal.  The value
                notAvailable(4) indicates link loss, low light, or
                no loopback.
                The value remoteFault(5) indicates that a fault
                has been detected at the remote end of the link.
                The value invalidSignal(6) indicates that an
                invalid signal has been received from the other
                end of the link.  Both remoteFault(5) and
                invalidSignal(6) apply only to MAUs of type
                10BASE-FB."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aMediaAvailable."
        ::= { rpMauEntry 6 }
    rpMauMediaAvailableStateExits OBJECT-TYPE
        SYNTAX    Counter
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "A count of the number of times that
                rpMauMediaAvailable for this MAU instance leaves
                the state available(3)."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                lostMediaCount."
        ::= { rpMauEntry 7 }
    rpMauJabberState OBJECT-TYPE
        SYNTAX    INTEGER {
                      other(1),
                      unknown(2),
                      noJabber(3),
                      jabbering(4)
                  }
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "The value other(1) is returned if the jabber
                state is not 2, 3, or 4.  The agent must always
                return other(1) for MAU type dot3MauTypeAUI.
                The value unknown(2) is returned when the MAU's
                true state is unknown; for example, when it is
                being initialized.
                If the MAU is not jabbering the agent returns
                noJabber(3).  This is the 'normal' state.
                If the MAU is in jabber state the agent returns
                the jabbering(4) value."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aJabber.jabberFlag."
        ::= { rpMauEntry 8 }
    rpMauJabberingStateEnters OBJECT-TYPE
        SYNTAX    Counter
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "A count of the number of times that
                rpMauJabberState for this MAU instance enters the
                state jabbering(4).  For a MAU of type
                dot3MauTypeAUI, this counter will always indicate
                zero."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aJabber.jabberCounter."
        ::= { rpMauEntry 9 }
    --
    --                    The Interface MAU Basic Group
    --
    -- Implementation of the Interface MAU Basic Group is mandatory
    -- for MAUs attached to DTEs (interfaces).
    --
    -- The Basic Interface MAU Table
    --
    ifMauTable OBJECT-TYPE
        SYNTAX    SEQUENCE OF IfMauEntry
        ACCESS    not-accessible
        STATUS    mandatory
        DESCRIPTION
                "Table of descriptive and status information about
                the MAU(s) attached to an interface."
        ::= { dot3IfMauBasicGroup 1 }
    ifMauEntry OBJECT-TYPE
        SYNTAX    IfMauEntry
        ACCESS    not-accessible
        STATUS    mandatory
        DESCRIPTION
                "An entry in the table, containing information
                about a single MAU."
        INDEX    { ifMauIfIndex, ifMauIndex }
        ::= { ifMauTable 1 }
    IfMauEntry ::=
        SEQUENCE {
            ifMauIfIndex
                INTEGER,
            ifMauIndex
                INTEGER,
            ifMauType
                OBJECT IDENTIFIER,
            ifMauStatus
                INTEGER,
            ifMauMediaAvailable
                INTEGER,
            ifMauMediaAvailableStateExits
                Counter,
            ifMauJabberState
                INTEGER,
            ifMauJabberingStateEnters
                Counter
        }
    ifMauIfIndex OBJECT-TYPE
        SYNTAX    INTEGER
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This variable uniquely identifies the interface
                to which the MAU described by this entry is
                connected."
        REFERENCE
                "Reference RFC 1213, ifIndex."
        ::= { ifMauEntry 1 }
    ifMauIndex OBJECT-TYPE
        SYNTAX    INTEGER (1..9)
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This variable uniquely identifies the MAU
                connected to interface ifMauIfIndex that is
                described by this entry."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2, aMAUID."
        ::= { ifMauEntry 2 }
    ifMauType OBJECT-TYPE
        SYNTAX    OBJECT IDENTIFIER
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This object identifies the 10 Mb/s baseband or
                broadband MAU type.  An initial set of MAU types
                are defined above.  The assignment of OBJECT
                IDENTIFIERs to new types of MAUs is managed by the
                IANA.  If the MAU type is unknown, the object
                identifier
                    unknownMauType OBJECT IDENTIFIER ::= { 0 0 }
                is returned.  Note that unknownMauType is a
                syntactically valid object identifier, and any
                conformant implementation of ASN.1 and the BER
                must be able to generate and recognize this
                value."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aMAUType."
        ::= { ifMauEntry 3 }
    ifMauStatus OBJECT-TYPE
        SYNTAX    INTEGER {
                      other(1),
                      unknown(2),
                      operational(3),
                      standby(4),
                      shutdown(5),
                      reset(6)
                  }
        ACCESS    read-write
        STATUS    mandatory
        DESCRIPTION
                "The current state of the MAU.  This object may be
                implemented as a read-only object by those agents
                and MAUs that do not implement software control of
                the MAU state.  Some agents may not support
                setting the value of this object to some of the
                enumerated values.
                The value other(1) is returned if the MAU is in a
                state other than one of the states 2 through 6.
                The value unknown(2) is returned when the MAU's
                true state is unknown; for example, when it is
                being initialized.
                A MAU in the operational(3) state is fully
                functional, operates, and passes signals to its
                attached DTE or repeater port in accordance to its
                specification.
                A MAU in standby(4) state forces DI and CI and the
                media transmitter to idle.  Standby(4) mode only
                applies to link type MAUs.  The state of
                ifMauMediaAvailable is unaffected.
                A MAU in shutdown(5) state assumes the same
                condition on DI, CI, and the media transmitter as
                though it were powered down.  The MAU may return
                other(1) value for the mauJabber and
                ifMauMediaAvailable objects when it is in this
                state.  For an AUI, this state will remove power
                from the AUI.
                Setting this variable to the value reset(6) resets
                the MAU in the same manner as a power-off, power-
                on cycle of at least one-half second would.  The
                agent is not required to return the value reset
                (6).
                Setting this variable to the value operational(3),
                standby(4), or shutdown(5) causes the MAU to
                assume the respective state except that setting a
                mixing-type MAU or an AUI to standby(4) will cause
                the MAU to enter the shutdown state."
            REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aMAUAdminState, and 20.2.3.3, acMAUAdminControl
                and acResetMAUAction."
        ::= { ifMauEntry 4 }
    ifMauMediaAvailable OBJECT-TYPE
        SYNTAX    INTEGER {
                      other(1),
                      unknown(2),
                      available(3),
                      notAvailable(4),
                      remoteFault(5),
                      invalidSignal(6)
                  }
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "If the MAU is a link or fiber type (FOIRL,
                10BASE-T, 10BASE-F) then this is equivalent to the
                link test fail state/low light function.  For an
                AUI or a coax (including broadband) MAU this
                indicates whether or not loopback is detected on
                the DI circuit.  The value of this attribute
                persists between packets for MAU types AUI,
                10BASE5, 10BASE2, 10BROAD36, and 10BASE-FP.
                The value other(1) is returned if the
                mediaAvailable state is not one of 2 through 6.
                The value unknown(2) is returned when the MAU's
                true state is unknown; for example, when it is
                being initialized.  At power-up or following a
                reset, the value of this attribute will be unknown
                for AUI, coax, and 10BASE-FP MAUs.  For these MAUs
                loopback will be tested on each transmission
                during which no collision is detected.  If DI is
                receiving input when DO returns to IDL after a
                transmission and there has been no collision
                during the transmission then loopback will be
                detected.  The value of this attribute will only
                change during non-collided transmissions for AUI,
                coax, and 10BASE-FP MAUs.
                The value available(3) indicates that the link,
                light, or loopback is normal.  The value
                notAvailable(4) indicates link loss, low light, or
                no loopback.
                The value remoteFault(5) indicates that a fault
                has been detected at the remote end of the link.
                The value invalidSignal(6) indicates that an
                invalid signal has been received from the other
                end of the link.  Both remoteFault(5) and
                invalidSignal(6) apply only to MAUs of type
                10BASE-FB."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aMediaAvailable."
        ::= { ifMauEntry 5 }
    ifMauMediaAvailableStateExits OBJECT-TYPE
        SYNTAX    Counter
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "A count of the number of times that
                ifMauMediaAvailable for this MAU instance leaves
                the state available(3)."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                lostMediaCount."
        ::= { ifMauEntry 6 }
    ifMauJabberState OBJECT-TYPE
        SYNTAX    INTEGER {
                      other(1),
                      unknown(2),
                      noJabber(3),
                      jabbering(4)
                  }
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "The value other(1) is returned if the jabber
                state is not 2, 3, or 4.  The agent must always
                return other(1) for MAU type dot3MauTypeAUI.
                The value unknown(2) is returned when the MAU's
                true state is unknown; for example, when it is
                being initialized.
                If the MAU is not jabbering the agent returns
                noJabber(3).  This is the 'normal' state.
                If the MAU is in jabber state the agent returns
                the jabbering(4) value."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aJabber.jabberFlag."
        ::= { ifMauEntry 7 }
    ifMauJabberingStateEnters OBJECT-TYPE
        SYNTAX    Counter
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "A count of the number of times that
                ifMauJabberState for this MAU instance enters the
                state jabbering(4).  For a MAU of type
                dot3MauTypeAUI, this counter will always indicate
                zero."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aJabber.jabberCounter."
        ::= { ifMauEntry 8 }
    --
    --                    The Broadband MAU Basic Group
    --
    -- Implementation of the Broadband MAU Basic Group is mandatory
    -- for broadband MAUs attached to DTEs.
    --
    -- The Basic Broadband MAU Table
    --
    broadMauBasicTable OBJECT-TYPE
        SYNTAX    SEQUENCE OF BroadMauBasicEntry
        ACCESS    not-accessible
        STATUS    mandatory
        DESCRIPTION
                "Table of descriptive and status information about
                the broadband MAUs connected to interfaces."
        ::= { dot3BroadMauBasicGroup 1 }
    broadMauBasicEntry OBJECT-TYPE
        SYNTAX    BroadMauBasicEntry
        ACCESS    not-accessible
        STATUS    mandatory
        DESCRIPTION
                "An entry in the table, containing information
                about a single broadband MAU."
        INDEX    { broadMauIfIndex, broadMauIndex }
        ::= { broadMauBasicTable 1 }
    BroadMauBasicEntry ::=
        SEQUENCE {
            broadMauIfIndex
                INTEGER,
            broadMauIndex
                INTEGER,
            broadMauXmtRcvSplitType
                INTEGER,
            broadMauXmtCarrierFreq
                INTEGER,
            broadMauTranslationFreq
                INTEGER
        }
    broadMauIfIndex OBJECT-TYPE
        SYNTAX    INTEGER
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This variable uniquely identifies the interface
                to which the MAU described by this entry is
                connected."
        REFERENCE
                "Reference RFC 1213, ifIndex."
        ::= { broadMauBasicEntry 1 }
    broadMauIndex OBJECT-TYPE
        SYNTAX    INTEGER (1..9)
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This variable uniquely identifies the MAU
                connected to interface broadMauIfIndex that is
                described by this entry."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2, aMAUID."
        ::= { broadMauBasicEntry 2 }
    broadMauXmtRcvSplitType OBJECT-TYPE
        SYNTAX    INTEGER {
                      other(1),
                      single(2),
                      dual(3)
                  }
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This object indicates the type of frequency
                multiplexing/cabling system used to separate the
                transmit and receive paths for the 10BROAD36 MAU.
                The value other(1) is returned if the split type
                is not either single or dual.
                The value single(2) indicates a single cable
                system.  The value dual(3) indicates a dual cable
                system, offset normally zero."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aBbMAUXmitRcvSplitType."
        ::= { broadMauBasicEntry 3 }
    broadMauXmtCarrierFreq OBJECT-TYPE
        SYNTAX    INTEGER
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This variable indicates the transmit carrier
                frequency of the 10BROAD36 MAU in MHz/4; that is,
                in units of 250 kHz."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aBroadbandFrequencies.xmitCarrierFrequency."
        ::= { broadMauBasicEntry 4 }
    broadMauTranslationFreq OBJECT-TYPE
        SYNTAX    INTEGER
        ACCESS    read-only
        STATUS    mandatory
        DESCRIPTION
                "This variable indicates the translation offset
                frequency of the 10BROAD36 MAU in MHz/4; that is,
                in units of 250 kHz."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.2,
                aBroadbandFrequencies.translationFrequency."
        ::= { broadMauBasicEntry 5 }
    -- Traps for use by 802.3 MAUs
    -- Traps are defined using the conventions in RFC 1215 [8].
    rpMauJabberTrap TRAP-TYPE
        ENTERPRISE  snmpDot3MauMgt
        VARIABLES   { rpMauJabberState }
        DESCRIPTION
                "This trap is sent whenever a managed repeater MAU
                enters the jabber state.
                The agent must throttle the generation of
                consecutive rpMauJabberTraps so that there is at
                least a five-second gap between them."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.4,
                nJabberNotification."
        ::= 1
    ifMauJabberTrap TRAP-TYPE
        ENTERPRISE  snmpDot3MauMgt
        VARIABLES   { ifMauJabberState }
        DESCRIPTION
                "This trap is sent whenever a managed interface
                MAU enters the jabber state.
                The agent must throttle the generation of
                consecutive ifMauJabberTraps so that there is at
                least a five-second gap between them."
        REFERENCE
                "Reference IEEE 802.3 MAU Mgt, 20.2.3.4,
                nJabberNotification."
        ::= 2
    END

Acknowledgments

This document is the work of the IETF Hub MIB Working Group. It is based on a proposal written by Geoff Thompson and modified by the IEEE 802.3 Repeater Management Task Force. Paul Woodruff provided valuable corrections and suggestions for improvement.

Members of the IETF Hub MIB Working Group included:

         Karl Auerbach            [email protected]
         Jim Barnes               [email protected]
         Steve Bostock            [email protected]
         David Bridgham           [email protected]
         Jack Brown               [email protected]
         Howard Brown             [email protected]
         Lida Canin               [email protected]
         Jeffrey Case             [email protected]
         Carson Cheung            [email protected]
         James Codespote          [email protected]
         John Cook                [email protected]
         Dave Cullerot            [email protected]
         James Davin              [email protected]
         Gary Ellis               [email protected]
         David Engel              [email protected]
         Mike Erlinger            [email protected]
         Jeff Erwin
         Bill Fardy               [email protected]
         Jeff Fried               [email protected]
         Bob Friesenhahn          [email protected]
         Shawn Gallagher          [email protected]
         Mike Grieves             [email protected]
         Walter Guilarte          [email protected]
         Phillip Hasse            [email protected]
         Mark Hoerth              [email protected]
         Greg Hollingsworth       [email protected]
         Ron Jacoby               [email protected]
         Mike Janson              [email protected]
         Ken Jones                [email protected]
         Satish Joshi             [email protected]
         Frank Kastenholz         [email protected]
         Manu Kaycee              [email protected]
         Mark Kepke               [email protected]
         Mark Kerestes            [email protected]
         Kenneth Key              [email protected]
         Yoav Kluger              [email protected]
         Cheryl Krupczak          [email protected]
         Ron Lau                  [email protected]
         Chao-Yu Liang            [email protected]
         Dave Lindemulder         [email protected]
         Richie McBride           [email protected]
         Keith McCloghrie         [email protected]
         Evan McGinnis            [email protected]
         Donna McMaster           [email protected]
         David Minnich            [email protected]
         Lynn Monsanto            [email protected]
         Miriam Nihart            [email protected]
         Niels Ole Brunsgaard     [email protected]
         Edison Paw               [email protected]
         David Perkins            [email protected]
         Jason Perreault          [email protected]
         John Pickens             [email protected]
         Jim Reinstedler          [email protected]
         Anil Rijsinghani         [email protected]
         Sam Roberts              [email protected]
         Dan Romascanu            [email protected]
         Marshall Rose            [email protected]
         Rick Royston             [email protected]
         Michael Sabo             [email protected]
         Jonathan Saperia         [email protected]
         Mark Schaefer            [email protected]
         Anil Singhal             [email protected]
         Timon Sloane             [email protected]
         Bob Stewart              [email protected]
         Emil Sturniolo           [email protected]
         Bruce Taber              [email protected]
         Iris Tal                 [email protected]
         Mark Therieau            [email protected]
         Geoff Thompson           [email protected]
         Dean Throop              [email protected]
         Steven Waldbusser        [email protected]
         Timothy Walden           [email protected]
         Philip Wang              [email protected]
         Drew Wansley             [email protected]
         David Ward               [email protected]
         Steve Wong               [email protected]
         Paul Woodruff            [email protected]
         Brian Wyld               [email protected]
         June-Kang Yang           [email protected]
         Henry Yip                [email protected]
         John Ziegler             [email protected]
         Joseph Zur               [email protected]

References

[1] Rose, M., and K. McCloghrie, "Structure and Identification of

    Management Information for TCP/IP-based internets", STD 16, RFC
    1155, Performance Systems International, Hughes LAN Systems, May
    1990.

[2] McCloghrie, K., and M. Rose, "Management Information Base for

    Network Management of TCP/IP-based internets", RFC 1156, Hughes
    LAN Systems, Performance Systems International, May 1990.

[3] Case, J., Fedor M., Schoffstall, M., and J. Davin, "Simple

    Network Management Protocol", STD 15, RFC 1157, SNMP Research,
    Performance Systems International, Performance Systems
    International, MIT Laboratory for Computer Science, May 1990.

[4] McCloghrie, K., and M. Rose, Editors, "Management Information

    Base for Network Management of TCP/IP-based internets: MIB-II",
    STD 17, RFC 1213, Hughes LAN Systems, Performance Systems
    International, March 1991.

[5] Information processing systems - Open Systems Interconnection -

    Specification of Abstract Syntax Notation One (ASN.1),
    International Organization for Standardization, International
    Standard 8824, December 1987.

[6] Information processing systems - Open Systems Interconnection -

    Specification of Basic Encoding Rules for Abstract Notation One
    (ASN.1), International Organization for Standardization,
    International Standard 8825, December 1987.

[7] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",

    STD 16, RFC 1212, Performance Systems International, Hughes LAN
    Systems, March 1991.

[8] Rose, M., Editor, "A Convention for Defining Traps for use with

    the SNMP", RFC 1215, Performance Systems International, March
    1991.

[9] IEEE 802.3/ISO 8802-3 Information processing systems - Local

    area networks - Part 3:  Carrier sense multiple access with
    collision detection (CSMA/CD) access method and physical layer
    specifications, 2nd edition, September 21, 1990.

[10] IEEE P802.3p, "Layer Management for 10 Mb/s Medium Access Unit

    (MAUs), Section 20", Draft Supplement to ANSI/IEEE 802.3, Draft
    5, July 11, 1992.

[11] Kastenholz, F., "Definitions of Managed Objects for the

    Ethernet-like Interface Types", RFC 1398, FTP Software, Inc.,
    January 1993.

[12] McMaster, D., and K. McCloghrie, Editors, "Definitions of

    Managed Objects for IEEE 802.3 Repeater Devices", RFC 1368,
    SynOptics Communications, Hughes LAN Systems, October 1992.

Security Considerations

Security issues are not discussed in this memo.

Authors' Addresses

Donna McMaster SynOptics Communications, Inc. 4401 Great America Parkway P.O. Box 58185 Santa Clara, CA 95052-8185

Phone: (408) 764-1206 EMail: [email protected]

Keith McCloghrie Hughes LAN Systems, Inc. 1225 Charleston Road Mountain View, CA 94043

Phone: (415) 966-7934 EMail: [email protected]

Sam Roberts Farallon Computing, Inc. 2470 Mariner Square Loop Alameda, CA 94501-1010

Phone: (510) 814-5215 EMail: [email protected]