rfc2358.txt

著名的RFC文档,其中有一些文档是已经翻译成中文的的.

   interface should implement is dependent on the maximum speed
   supported on the interface.  The EtherLike-MIB etherCompliance
   compliance statement applies to all Ethernet-like interfaces whose
   maximum supported speed is 10 Mbit/sec or less.  There are no
   implementation differences. Similarly, the EtherLike-MIB
   ether100MbsCompliance compliance statement applies to all Ethernet-
   like interfaces whose maximum supported speed is 100Mbit/sec.

   An interface that is capable of operating at 100Mbit/sec MUST
   implement the ether100MbsCompliance compliance statement, even if it
   is currently operating at a lower speed.  Counters in the
   ether100MbsCompliance compliance statement that only apply to 100
   Mbit interfaces would simply not increment when the interface is
   operating at a lower speed.




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3.2.7.  Specific Interface MIB Objects

   The following table provides specific implementation guidelines for
   applying the interface group objects to ethernet-like media.

     Object

     ifIndex                    Each ethernet-like interface is
                                represented by an ifEntry.  The
                                dot3StatsTable in this MIB module is
                                indexed by dot3StatsIndex. The interface
                                identified by a particular value of
                                dot3StatsIndex is the same interface as
                                identified by the same value of ifIndex.

     ifDescr                    Refer to [12].

     ifType                     Refer to section 3.2.6.

     ifMtu                      1500 octets.

     ifSpeed                    The current operational speed of the
                                interface in bits per second. For
                                current ethernet-like interfaces, this
                                will be equal to 1,000,000 (1 million),
                                10,000,000 (10 million), or 100,000,000
                                (100 million). If the interface
                                implements auto-negotiation,
                                auto-negotiation is enabled for this
                                interface, and the interface has not yet
                                negotiated to an operational speed, this
                                object SHOULD reflect the maximum speed
                                supported by the interface.  Note that
                                this object MUST NOT indicate a doubled
                                value when operating in full-duplex
                                mode.  It MUST indicate the correct
                                line speed regardless of the current
                                duplex mode.  The correct object to use
                                to determine the duplex mode of the
                                interface is the ifMauType object in the
                                802.3 MAU MIB.

     ifPhysAddress              Refer to section 3.2.5.

     ifAdminStatus              Write access is not required.  Support
                                for 'testing' is not required.





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     ifOperStatus               The operational state of the interface.
                                Support for 'testing' is not required.
                                The value 'dormant' has no meaning for
                                an ethernet-like interface.

     ifLastChange               Refer to [12].

     ifInOctets                 The number of octets in valid MAC frames
                                received on this interface, including
                                the MAC header and FCS.

     ifInUcastPkts              Refer to [12].

     ifInDiscards               Refer to [12].

     ifInErrors                 The sum for this interface of
                                dot3StatsAlignmentErrors,
                                dot3StatsFCSErrors,
                                dot3StatsFrameTooLongs,
                                dot3StatsInternalMacReceiveErrors and
                                dot3StatsSymbolErrors.

     ifInUnknownProtos          Refer to [12].

     ifOutOctets                The number of octets transmitted in
                                valid MAC frames on this interface,
                                including the MAC header and FCS.

     ifOutUcastPkts             Refer to [12].

     ifOutDiscards              Refer to [12].

     ifOutErrors                The sum for this interface of:
                                dot3StatsSQETestErrors,
                                dot3StatsLateCollisions,
                                dot3StatsExcessiveCollisions,
                                dot3StatsInternalMacTransmitErrors and
                                dot3StatsCarrierSenseErrors.

     ifName                     Locally-significant textual name for the
                                interface (e.g. lan0).

     ifInMulticastPkts          Refer to [12].

     ifInBroadcastPkts          Refer to [12].

     ifOutMulticastPkts         Refer to [12].




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     ifOutBroadcastPkts         Refer to [12].

     ifHCInOctets               64-bit versions of counters.  Required
     ifHCOutOctets              for ethernet-like interfaces that are
                                capable of operating at 20Mbit/sec or
                                faster, even if the interface is
                                currently operating at less than
                                20Mbit/sec.

     ifHCInUcastPkts            64-bit versions of packet counters.
     ifHCInMulticastPkts        Support for these counters is not
     ifHCInBroadcastPkts        required for the interface types
     ifHCOutUcastPkts           supported by this MIB.  They are only
     ifHCOutMulticastPkts       required for interfaces capable of
     ifHCOutBroadcastPkts       operating at 640Mbit/sec or faster.
                                Note that a future revision of this
                                document may support faster interfaces,
                                and therefore may require support for
                                these counters.

     ifLinkUpDownTrapEnable     Refer to [12].  Default is 'enabled'

     ifHighSpeed                The current operational speed of the
                                interface in millions of bits per
                                second. For current ethernet-like
                                interfaces, this will be equal to 1, 10,
                                or 100.  If the interface implements
                                auto-negotiation, auto-negotiation is
                                enabled for this interface, and the
                                interface has not yet negotiated to an
                                operational speed, this object SHOULD
                                reflect the maximum speed supported by
                                the interface. Note that this object
                                MUST NOT indicate a doubled value when
                                operating in full-duplex mode.  It MUST
                                indicate the correct line speed
                                regardless of the current duplex mode.
                                The correct object to use to determine
                                the duplex mode of the interface is the
                                ifMauType object in the 802.3 MAU MIB.

     ifPromiscuousMode          Refer to [12].

     ifConnectorPresent         This will normally be 'true'.

     ifAlias                    Refer to [12].

     ifCounterDiscontinuityTime Refer to [12].



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     ifStackHigherLayer         Refer to section 3.2.1.
     ifStackLowerLayer
     ifStackStatus

     ifRcvAddressAddress        Refer to section 3.2.4.
     ifRcvAddressStatus
     ifRcvAddressType

3.3.  Relation to the 802.3 MAU MIB

   Support for the mauModIfCompl compliance statement of the MAU-MIB
   [14] is REQUIRED for Ethernet-like interfaces.  This MIB is needed in
   order to allow applications to determine the current MAU type in use
   by the interface.  The MAU type indicates not only the media type in
   use, but also indicates whether the interface is operating in half-
   duplex or full-duplex mode.  Implementing this MIB module without
   implementing the MAU-MIB would leave applications with no standard
   way to determine the duplex mode of the interface.

3.4.  Mapping of IEEE 802.3 Managed Objects

   IEEE 802.3 Managed Object         Corresponding SNMP Object

   oMacEntity
    .aMACID                          dot3StatsIndex or
                                     IF-MIB - ifIndex
    .aFramesTransmittedOK            IF-MIB - ifOutUCastPkts +
                                              ifOutMulticastPkts +
                                              ifOutBroadcastPkts
    .aSingleCollisionFrames          dot3StatsSingleCollisionFrames
    .aMultipleCollisionFrames        dot3StatsMultipleCollisionFrames
    .aFramesReceivedOK               IF-MIB - ifInUcastPkts +
                                              ifInMulticastPkts +
                                              ifInBroadcastPkts
    .aFrameCheckSequenceErrors       dot3StatsFCSErrors
    .aAlignmentErrors                dot3StatsAlignmentErrors
    .aOctetsTransmittedOK            IF-MIB - ifOutOctets
    .aFramesWithDeferredXmissions    dot3StatsDeferredTransmissions
    .aLateCollisions                 dot3StatsLateCollisions
    .aFramesAbortedDueToXSColls      dot3StatsExcessiveCollisions
    .aFramesLostDueToIntMACXmitError dot3StatsInternalMacTransmitErrors
    .aCarrierSenseErrors             dot3StatsCarrierSenseErrors
    .aOctetsReceivedOK               IF-MIB - ifInOctets
    .aFramesLostDueToIntMACRcvError  dot3StatsInternalMacReceiveErrors
    .aPromiscuousStatus              IF-MIB - ifPromiscuousMode
    .aReadMulticastAddressList       IF-MIB - ifRcvAddressTable
    .aMulticastFramesXmittedOK       IF-MIB - ifOutMulticastPkts
    .aBroadcastFramesXmittedOK       IF-MIB - ifOutBroadcastPkts



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    .aMulticastFramesReceivedOK      IF-MIB - ifInMulticastPkts
    .aBroadcastFramesReceivedOK      IF-MIB - ifInBroadcastPkts
    .aFrameTooLongErrors             dot3StatsFrameTooLongs
    .aReadWriteMACAddress            IF-MIB - ifPhysAddress
    .aCollisionFrames                dot3CollFrequencies
    .acAddGroupAddress               IF-MIB - ifRcvAddressTable
    .acDeleteGroupAddress            IF-MIB - ifRcvAddressTable
    .acExecuteSelfTest               dot3TestLoopBack

   oPHYEntity
    .aSQETestErrors                  dot3StatsSQETestErrors
    .aSymbolErrorDuringCarrier       dot3StatsSymbolErrors


   The following IEEE 802.3 managed objects have been removed from this
   MIB module as a result of implementation feedback:

   oMacEntity
     .aFramesWithExcessiveDeferral
     .aInRangeLengthErrors
     .aOutOfRangeLengthField
     .aMACEnableStatus
     .aTransmitEnableStatus
     .aMulticastReceiveStatus
     .acInitializeMAC

   Please see [15] for the detailed reasoning on why these objects were
   removed.

4.  Definitions

   EtherLike-MIB DEFINITIONS ::= BEGIN

       IMPORTS
           MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY,
           Counter32, mib-2, transmission
               FROM SNMPv2-SMI
           MODULE-COMPLIANCE, OBJECT-GROUP
               FROM SNMPv2-CONF
           ifIndex, InterfaceIndex
               FROM IF-MIB;

       etherMIB MODULE-IDENTITY
           LAST-UPDATED "9806032150Z"  -- June 3, 1998
           ORGANIZATION "IETF 802.3 Hub MIB Working Group"
           CONTACT-INFO
               "WG E-mail: [e-mail]
             To subscribe: [e-mail]



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RFC 2358         MIB for Ethernet-like Interface Types         June 1998


                    Chair: Dan Romascanu
                   Postal: LANNET Ltd.
                           Atidum Technology Park, Bldg. 3
                           Tel Aviv 61131
                           Israel
                      Tel: [phone]
                   E-mail: [e-mail]

                  Editor: John Flick
                  Postal: Hewlett-Packard Company
                          8000 Foothills Blvd. M/S 5556
                          Roseville, CA 95747-5556
                          USA
                     Tel: [phone]
                     Fax: [phone]
                  E-mail: [e-mail]