rfc2668.txt

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          ::= { ifMauEntry 4 }
      ifMauMediaAvailable OBJECT-TYPE
          SYNTAX      INTEGER {
                          other(1),
                          unknown(2),
                          available(3),
                          notAvailable(4),
                          remoteFault(5),
                          invalidSignal(6),
                          remoteJabber(7),
                          remoteLinkLoss(8),
                          remoteTest(9),
                          offline(10),
                          autoNegError(11)



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RFC 2668                     802.3 MAU MIB                   August 1999


                      }
          MAX-ACCESS  read-only
          STATUS      current
          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 11.

                      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.

                      For 100Mbps and 1000Mbps MAUs, the enumerations
                      match the states within the respective link
                      integrity state diagrams, fig 32-16, 23-12 and
                      24-15 of sections 32, 23 and 24 of [16].  Any
                      MAU which implements management of
                      auto-negotiation will map remote fault
                      indication to remote fault.

                      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.
                      This value applies to 10BASE-FB, 100BASE-T4 Far
                      End Fault Indication and non-specified remote
                      faults from a system running auto-negotiation.



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RFC 2668                     802.3 MAU MIB                   August 1999


                      The values remoteJabber(7), remoteLinkLoss(8),
                      and remoteTest(9) SHOULD be used instead of
                      remoteFault(5) where the reason for remote fault
                      is identified in the remote signaling protocol.

                      The value invalidSignal(6) indicates that an
                      invalid signal has been received from the other
                      end of the link.  InvalidSignal(6) applies only
                      to MAUs of type 10BASE-FB.

                      Where an IEEE Std 802.3u-1995 clause 22 MII
                      is present, a logic one in the remote fault bit
                      (reference section 22.2.4.2.8 of that document)
                      maps to the value remoteFault(5), and a logic
                      zero in the link status bit (reference section
                      22.2.4.2.10 of that document) maps to the value
                      notAvailable(4).  The value notAvailable(4)
                      takes precedence over the value remoteFault(5).

                      Any MAU that implements management of clause 37
                      Auto-Negotiation will map the received RF1 and
                      RF2 bit values for Offline to offline(10), Link
                      Failure to remoteFault(5) and Auto-Negotiation
                      Error to autoNegError(11)."
          REFERENCE   "[IEEE 802.3 Std], 30.5.1.1.4, aMediaAvailable."
          ::= { ifMauEntry 5 }

      ifMauMediaAvailableStateExits OBJECT-TYPE
          SYNTAX      Counter32
          MAX-ACCESS  read-only
          STATUS      current
          DESCRIPTION "A count of the number of times that
                      ifMauMediaAvailable for this MAU instance leaves
                      the state available(3).
                      Discontinuities in the value of this counter can
                      occur at re-initialization of the management
                      system, and at other times as indicated by the
                      value of ifCounterDiscontinuityTime."
          REFERENCE   "[IEEE 802.3 Std], 30.5.1.1.5,
                      aLoseMediaCounter.
                      RFC 2233, ifCounterDiscontinuityTime."
          ::= { ifMauEntry 6 }

      ifMauJabberState OBJECT-TYPE
          SYNTAX      INTEGER {
                          other(1),
                          unknown(2),
                          noJabber(3),



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RFC 2668                     802.3 MAU MIB                   August 1999


                          jabbering(4)
                      }
          MAX-ACCESS  read-only
          STATUS      current
          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   "[IEEE 802.3 Std], 30.5.1.1.6,
                      aJabber.jabberFlag."
          ::= { ifMauEntry 7 }

      ifMauJabberingStateEnters OBJECT-TYPE
          SYNTAX      Counter32
          MAX-ACCESS  read-only
          STATUS      current
          DESCRIPTION "A count of the number of times that
                      mauJabberState for this MAU instance enters the
                      state jabbering(4). This counter will always
                      indicate zero for MAUs of type dot1MauTypeAUI
                      and those of speeds above 10Mbps.

                      Discontinuities in the value of this counter can
                      occur at re-initialization of the management
                      system, and at other times as indicated by the
                      value of ifCounterDiscontinuityTime."
          REFERENCE   "[IEEE 802.3 Std], 30.5.1.1.6,
                      aJabber.jabberCounter.
                      RFC 2233, ifCounterDiscontinuityTime."
          ::= { ifMauEntry 8 }

      ifMauFalseCarriers OBJECT-TYPE
          SYNTAX      Counter32
          MAX-ACCESS  read-only
          STATUS      current
          DESCRIPTION "A count of the number of false carrier events
                      during IDLE in 100BASE-X and 1000BASE-X links.

                      For all other MAU types, this counter will



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RFC 2668                     802.3 MAU MIB                   August 1999


                      always indicate zero. This counter does not
                      increment at the symbol rate.

                      It can increment after a valid carrier
                      completion at a maximum rate of once per 100 ms
                      for 100BASE-X and once per 10us for 1000BASE-X
                      until the next CarrierEvent.

                      Discontinuities in the value of this counter can
                      occur at re-initialization of the management
                      system, and at other times as indicated by the
                      value of ifCounterDiscontinuityTime."
          REFERENCE   "[IEEE 802.3 Std], 30.5.1.1.10, aFalseCarriers.
                      RFC 2233, ifCounterDiscontinuityTime."
          ::= { ifMauEntry 9 }

      ifMauTypeList OBJECT-TYPE
          SYNTAX      Integer32
          MAX-ACCESS  read-only
          STATUS      deprecated
          DESCRIPTION "********* THIS OBJECT IS DEPRECATED **********

                      A value that uniquely identifies the set of
                      possible IEEE 802.3 types that the MAU could be.
                      The value is a sum which initially takes the
                      value zero.  Then, for each type capability of
                      this MAU, 2 raised to the power noted below is
                      added to the sum. For example, a MAU which has
                      the capability to be only 10BASE-T would have a
                      value of 512 (2**9).  In contrast, a MAU which
                      supports both 10Base-T (full duplex) and
                      100BASE-TX (full duplex) would have a value of
                      ((2**11) + (2**16)) or 67584.

                      The powers of 2 assigned to the capabilities are
                      these:

                      Power  Capability
                        0      other or unknown
                        1      AUI
                        2      10BASE-5
                        3      FOIRL
                        4      10BASE-2
                        5      10BASE-T duplex mode unknown
                        6      10BASE-FP
                        7      10BASE-FB
                        8      10BASE-FL duplex mode unknown
                        9      10BROAD36



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RFC 2668                     802.3 MAU MIB                   August 1999


                       10      10BASE-T  half duplex mode
                       11      10BASE-T  full duplex mode
                       12      10BASE-FL half duplex mode
                       13      10BASE-FL full duplex mode
                       14      100BASE-T4
                       15      100BASE-TX half duplex mode
                       16      100BASE-TX full duplex mode
                       17      100BASE-FX half duplex mode
                       18      100BASE-FX full duplex mode
                       19      100BASE-T2 half duplex mode
                       20      100BASE-T2 full duplex mode

                      If auto-negotiation is present on this MAU, this
                      object will map to ifMauAutoNegCapability.

                      This object has been deprecated in favour of
                      ifMauTypeListBits."
          ::= { ifMauEntry 10 }

      ifMauDefaultType OBJECT-TYPE
          SYNTAX      OBJECT IDENTIFIER
          MAX-ACCESS  read-write
          STATUS      current
          DESCRIPTION "This object identifies the default
                      administrative baseband MAU type, to be used in
                      conjunction with the operational MAU type
                      denoted by ifMauType.

                      The set of possible values for this object is
                      the same as the set defined for the ifMauType
                      object.

                      This object represents the
                      administratively-configured type of the MAU.  If
                      auto-negotiation is not enabled or is not
                      implemented for this MAU, the value of this
                      object determines the operational type of the
                      MAU.  In this case, a set to this object will
                      force the MAU into the specified operating mode.

                      If auto-negotiation is implemented and enabled
                      for this MAU, the operational type of the MAU
                      is determined by auto-negotiation, and the value
                      of this object denotes the type to which the MAU
                      will automatically revert if/when
                      auto-negotiation is later disabled.

                      NOTE TO IMPLEMENTORS:  It may be necessary to



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RFC 2668                     802.3 MAU MIB                   August 1999


                      provide for underlying hardware implementations
                      which do not follow the exact behavior specified
                      above.  In particular, when
                      ifMauAutoNegAdminStatus transitions from enabled
                      to disabled, the agent implementation MUST
                      ensure that the operational type of the MAU (as
                      reported by ifMauType) correctly transitions to
                      the value specified by this object, rather than
                      continuing to operate at the value earlier
                      determined by the auto-negotiation function."
          REFERENCE   "[IEEE 802.3 Std], 30.5.1.1.1, aMAUID, and