xsi:noNamespaceSchemaLocation="http://www.ibr.cs.tu-bs.de/projects/nmrg/smi.xsd">

  <module name="IF-MIB" language="SMIv2">

    <organization>  

        IETF Interfaces MIB Working Group

    </organization>

    <contact>       

           Keith McCloghrie

        Cisco Systems, Inc.

        170 West Tasman Drive

        San Jose, CA  95134-1706

        US

        408-526-5260

        kzm@cisco.com

    </contact>

    <description>

        The MIB module to describe generic objects for network

        interface sub-layers.  This MIB is an updated version of

        MIB-II's ifTable, and incorporates the extensions defined in

        RFC 1229.

    </description>

    <revision date="2000-06-14 00:00">

      <description>

          Clarifications agreed upon by the Interfaces MIB WG, and

          published as RFC 2863.

      </description>

    </revision>

    <revision date="1996-02-28 21:55">

      <description>

          Revisions made by the Interfaces MIB WG, and published in

          RFC 2233.

      </description>

    </revision>

    <revision date="1993-11-08 21:55">

      <description>

          Initial revision, published as part of RFC 1573.

      </description>

    </revision>

    <identity node="ifMIB"/>

  </module>

  <imports>

    <import module="SNMPv2-SMI" name="MODULE-IDENTITY"/>

    <import module="SNMPv2-SMI" name="OBJECT-TYPE"/>

    <import module="SNMPv2-SMI" name="Counter32"/>

    <import module="SNMPv2-SMI" name="Gauge32"/>

    <import module="SNMPv2-SMI" name="Counter64"/>

    <import module="SNMPv2-SMI" name="Integer32"/>

    <import module="SNMPv2-SMI" name="TimeTicks"/>

    <import module="SNMPv2-SMI" name="mib-2"/>

    <import module="SNMPv2-SMI" name="NOTIFICATION-TYPE"/>

    <import module="SNMPv2-TC" name="TEXTUAL-CONVENTION"/>

    <import module="SNMPv2-TC" name="DisplayString"/>

    <import module="SNMPv2-TC" name="PhysAddress"/>

    <import module="SNMPv2-TC" name="TruthValue"/>

    <import module="SNMPv2-TC" name="RowStatus"/>

    <import module="SNMPv2-TC" name="TimeStamp"/>

    <import module="SNMPv2-TC" name="AutonomousType"/>

    <import module="SNMPv2-TC" name="TestAndIncr"/>

    <import module="SNMPv2-CONF" name="MODULE-COMPLIANCE"/>

    <import module="SNMPv2-CONF" name="OBJECT-GROUP"/>

    <import module="SNMPv2-CONF" name="NOTIFICATION-GROUP"/>

    <import module="SNMPv2-MIB" name="snmpTraps"/>

    <import module="IANAifType-MIB" name="IANAifType"/>

  </imports>

  <typedefs>

    <typedef name="OwnerString" basetype="OctetString" status="deprecated">

      <range min="0" max="255"/>

      <format>255a</format>

      <description>

          This data type is used to model an administratively

          assigned name of the owner of a resource.  This information

          is taken from the NVT ASCII character set.  It is suggested

          that this name contain one or more of the following: ASCII

          form of the manager station's transport address, management

          station name (e.g., domain name), network management

          personnel's name, location, or phone number.  In some cases

          the agent itself will be the owner of an entry.  In these

          cases, this string shall be set to a string starting with

          'agent'.

      </description>

    </typedef>

    <typedef name="InterfaceIndex" basetype="Integer32" status="current">

      <range min="1" max="2147483647"/>

      <format>d</format>

      <description>

          A unique value, greater than zero, for each interface or

          interface sub-layer in the managed system.  It is

          recommended that values are assigned contiguously starting

          from 1.  The value for each interface sub-layer must remain

          constant at least from one re-initialization of the entity's

          network management system to the next re-initialization.

      </description>

    </typedef>

    <typedef name="InterfaceIndexOrZero" basetype="Integer32" status="current">

      <range min="0" max="2147483647"/>

      <format>d</format>

      <description>

          This textual convention is an extension of the

          InterfaceIndex convention.  The latter defines a greater

          than zero value used to identify an interface or interface

          sub-layer in the managed system.  This extension permits the

          additional value of zero.  the value zero is object-specific

          and must therefore be defined as part of the description of

          any object which uses this syntax.  Examples of the usage of

          zero might include situations where interface was unknown,

          or when none or all interfaces need to be referenced.

      </description>

    </typedef>

  </typedefs>

  <nodes>

    <node name="interfaces" oid="1.3.6.1.2.1.2">

    </node>

    <scalar name="ifNumber" oid="1.3.6.1.2.1.2.1" status="current">

      <syntax>

        <type module="" name="Integer32"/>

      </syntax>

      <access>readonly</access>

      <description>

          The number of network interfaces (regardless of their

          current state) present on this system.

      </description>

    </scalar>

      <description>

          A list of interface entries.  The number of entries is

          given by the value of ifNumber.

      </description>

      <row name="ifEntry" oid="1.3.6.1.2.1.2.2.1" status="current">

        <linkage>

          <index module="IF-MIB" name="ifIndex"/>

        </linkage>

        <description>

            An entry containing management information applicable to a

            particular interface.

        </description>

        <column name="ifIndex" oid="1.3.6.1.2.1.2.2.1.1" status="current">

          <syntax>

            <type module="IF-MIB" name="InterfaceIndex"/>

          </syntax>

          <access>readonly</access>

          <description>

              A unique value, greater than zero, for each interface.  It

              is recommended that values are assigned contiguously

              starting from 1.  The value for each interface sub-layer

              must remain constant at least from one re-initialization of

              the entity's network management system to the next re-

              initialization.

          </description>

        </column>

        <column name="ifDescr" oid="1.3.6.1.2.1.2.2.1.2" status="current">

          <syntax>

            <typedef basetype="OctetString">

              <parent module="SNMPv2-TC" name="DisplayString"/>

              <range min="0" max="255"/>

            </typedef>

          </syntax>

          <access>readonly</access>

          <description>

              A textual string containing information about the

              interface.  This string should include the name of the

              manufacturer, the product name and the version of the

              interface hardware/software.

          </description>

        </column>

        <column name="ifType" oid="1.3.6.1.2.1.2.2.1.3" status="current">

          <syntax>

            <type module="IANAifType-MIB" name="IANAifType"/>

          </syntax>

          <access>readonly</access>

          <description>

              The type of interface.  Additional values for ifType are

              assigned by the Internet Assigned Numbers Authority (IANA),

              through updating the syntax of the IANAifType textual

              convention.

          </description>

        </column>

        <column name="ifMtu" oid="1.3.6.1.2.1.2.2.1.4" status="current">

          <syntax>

            <type module="" name="Integer32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The size of the largest packet which can be sent/received

              on the interface, specified in octets.  For interfaces that

              are used for transmitting network datagrams, this is the

              size of the largest network datagram that can be sent on the

              interface.

          </description>

        </column>

        <column name="ifSpeed" oid="1.3.6.1.2.1.2.2.1.5" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Gauge32"/>

          </syntax>

          <access>readonly</access>

          <description>

              An estimate of the interface's current bandwidth in bits

              per second.  For interfaces which do not vary in bandwidth

              or for those where no accurate estimation can be made, this

              object should contain the nominal bandwidth.  If the

              bandwidth of the interface is greater than the maximum value

              reportable by this object then this object should report its

              maximum value (4,294,967,295) and ifHighSpeed must be used

              to report the interace's speed.  For a sub-layer which has

              no concept of bandwidth, this object should be zero.

          </description>

        </column>

        <column name="ifPhysAddress" oid="1.3.6.1.2.1.2.2.1.6" status="current">

          <syntax>

            <type module="SNMPv2-TC" name="PhysAddress"/>

          </syntax>

          <access>readonly</access>

          <description>

              The interface's address at its protocol sub-layer.  For

              example, for an 802.x interface, this object normally

              contains a MAC address.  The interface's media-specific MIB

              must define the bit and byte ordering and the format of the

              value of this object.  For interfaces which do not have such

              an address (e.g., a serial line), this object should contain

              an octet string of zero length.

          </description>

        </column>

        <column name="ifAdminStatus" oid="1.3.6.1.2.1.2.2.1.7" status="current">

          <syntax>

            <typedef basetype="Enumeration">

              <namednumber name="up" number="1"/>

              <namednumber name="down" number="2"/>

              <namednumber name="testing" number="3"/>

            </typedef>

          </syntax>

          <access>readwrite</access>

          <description>

              The desired state of the interface.  The testing(3) state

              indicates that no operational packets can be passed.  When a

              managed system initializes, all interfaces start with

              ifAdminStatus in the down(2) state.  As a result of either

              explicit management action or per configuration information

              retained by the managed system, ifAdminStatus is then

              changed to either the up(1) or testing(3) states (or remains

              in the down(2) state).

          </description>

        </column>

        <column name="ifOperStatus" oid="1.3.6.1.2.1.2.2.1.8" status="current">

          <syntax>

            <typedef basetype="Enumeration">

              <namednumber name="up" number="1"/>

              <namednumber name="down" number="2"/>

              <namednumber name="testing" number="3"/>

              <namednumber name="unknown" number="4"/>

              <namednumber name="dormant" number="5"/>

              <namednumber name="notPresent" number="6"/>

              <namednumber name="lowerLayerDown" number="7"/>

            </typedef>

          </syntax>

          <access>readonly</access>

          <description>

              The current operational state of the interface.  The

              testing(3) state indicates that no operational packets can

              be passed.  If ifAdminStatus is down(2) then ifOperStatus

              should be down(2).  If ifAdminStatus is changed to up(1)

              then ifOperStatus should change to up(1) if the interface is

              ready to transmit and receive network traffic; it should

              change to dormant(5) if the interface is waiting for

              external actions (such as a serial line waiting for an

              incoming connection); it should remain in the down(2) state

              if and only if there is a fault that prevents it from going

              to the up(1) state; it should remain in the notPresent(6)

              state if the interface has missing (typically, hardware)

              components.

          </description>

        </column>

        <column name="ifLastChange" oid="1.3.6.1.2.1.2.2.1.9" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="TimeTicks"/>

          </syntax>

          <access>readonly</access>

          <description>

              The value of sysUpTime at the time the interface entered

              its current operational state.  If the current state was

              entered prior to the last re-initialization of the local

              network management subsystem, then this object contains a

              zero value.

          </description>

        </column>

        <column name="ifInOctets" oid="1.3.6.1.2.1.2.2.1.10" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of octets received on the interface,

              including framing characters.

              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.

          </description>

        </column>

        <column name="ifInUcastPkts" oid="1.3.6.1.2.1.2.2.1.11" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The number of packets, delivered by this sub-layer to a

              higher (sub-)layer, which were not addressed to a multicast

              or broadcast address at this sub-layer.

              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.

          </description>

        </column>

        <column name="ifInNUcastPkts" oid="1.3.6.1.2.1.2.2.1.12" status="deprecated">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The number of packets, delivered by this sub-layer to a

              higher (sub-)layer, which were addressed to a multicast or

              broadcast address at this sub-layer.

              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.

              This object is deprecated in favour of ifInMulticastPkts and

              ifInBroadcastPkts.

          </description>

        </column>

        <column name="ifInDiscards" oid="1.3.6.1.2.1.2.2.1.13" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The number of inbound packets which were chosen to be

              discarded even though no errors had been detected to prevent

              their being deliverable to a higher-layer protocol.  One

              possible reason for discarding such a packet could be to

              free up buffer space.

              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.

          </description>

        </column>

        <column name="ifInErrors" oid="1.3.6.1.2.1.2.2.1.14" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              For packet-oriented interfaces, the number of inbound

              packets that contained errors preventing them from being

              deliverable to a higher-layer protocol.  For character-

              oriented or fixed-length interfaces, the number of inbound

              transmission units that contained errors preventing them

              from being deliverable to a higher-layer protocol.

              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.

          </description>

        </column>

        <column name="ifInUnknownProtos" oid="1.3.6.1.2.1.2.2.1.15" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              For packet-oriented interfaces, the number of packets

              received via the interface which were discarded because of

              an unknown or unsupported protocol.  For character-oriented

              or fixed-length interfaces that support protocol

              multiplexing the number of transmission units received via

              the interface which were discarded because of an unknown or

              unsupported protocol.  For any interface that does not

              support protocol multiplexing, this counter will always be

              0.

              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.

          </description>

        </column>

        <column name="ifOutOctets" oid="1.3.6.1.2.1.2.2.1.16" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of octets transmitted out of the

              interface, including framing characters.

              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.

          </description>

        </column>

        <column name="ifOutUcastPkts" oid="1.3.6.1.2.1.2.2.1.17" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of packets that higher-level protocols

              requested be transmitted, and which were not addressed to a

              multicast or broadcast address at this sub-layer, including

              those that were discarded or not sent.

              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.

          </description>

        </column>

        <column name="ifOutNUcastPkts" oid="1.3.6.1.2.1.2.2.1.18" status="deprecated">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of packets that higher-level protocols

              requested be transmitted, and which were addressed to a

              multicast or broadcast address at this sub-layer, including

              those that were discarded or not sent.

              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.

              This object is deprecated in favour of ifOutMulticastPkts

              and ifOutBroadcastPkts.

          </description>

        </column>

        <column name="ifOutDiscards" oid="1.3.6.1.2.1.2.2.1.19" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The number of outbound packets which were chosen to be

              discarded even though no errors had been detected to prevent

              their being transmitted.  One possible reason for discarding

              such a packet could be to free up buffer space.

              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.

          </description>

        </column>

        <column name="ifOutErrors" oid="1.3.6.1.2.1.2.2.1.20" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              For packet-oriented interfaces, the number of outbound

              packets that could not be transmitted because of errors.

              For character-oriented or fixed-length interfaces, the

              number of outbound transmission units that could not be

              transmitted because of errors.

              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.

          </description>

        </column>

        <column name="ifOutQLen" oid="1.3.6.1.2.1.2.2.1.21" status="deprecated">

          <syntax>

            <type module="SNMPv2-SMI" name="Gauge32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The length of the output packet queue (in packets).

          </description>

        </column>

        <column name="ifSpecific" oid="1.3.6.1.2.1.2.2.1.22" status="deprecated">

          <syntax>

            <type module="" name="ObjectIdentifier"/>

          </syntax>

          <access>readonly</access>

          <description>

              A reference to MIB definitions specific to the particular

              media being used to realize the interface.  It is

              recommended that this value point to an instance of a MIB

              object in the media-specific MIB, i.e., that this object

              have the semantics associated with the InstancePointer

              textual convention defined in RFC 2579.  In fact, it is

              recommended that the media-specific MIB specify what value

              ifSpecific should/can take for values of ifType.  If no MIB

              definitions specific to the particular media are available,

              the value should be set to the OBJECT IDENTIFIER { 0 0 }.

          </description>

        </column>

      </row>

    <node name="ifMIB" oid="1.3.6.1.2.1.31" status="current">

    </node>

    <node name="ifMIBObjects" oid="1.3.6.1.2.1.31.1">

    </node>

      <description>

          A list of interface entries.  The number of entries is

          given by the value of ifNumber.  This table contains

          additional objects for the interface table.

      </description>

      <row name="ifXEntry" oid="1.3.6.1.2.1.31.1.1.1" status="current">

        <linkage>

          <augments module="IF-MIB" name="ifEntry"/>

        </linkage>

        <description>

            An entry containing additional management information

            applicable to a particular interface.

        </description>

        <column name="ifName" oid="1.3.6.1.2.1.31.1.1.1.1" status="current">

          <syntax>

            <type module="SNMPv2-TC" name="DisplayString"/>

          </syntax>

          <access>readonly</access>

          <description>

              The textual name of the interface.  The value of this

              object should be the name of the interface as assigned by

              the local device and should be suitable for use in commands

              entered at the device's `console'.  This might be a text

              name, such as `le0' or a simple port number, such as `1',

              depending on the interface naming syntax of the device.  If

              several entries in the ifTable together represent a single

              interface as named by the device, then each will have the

              same value of ifName.  Note that for an agent which responds

              to SNMP queries concerning an interface on some other

              (proxied) device, then the value of ifName for such an

              interface is the proxied device's local name for it.

              If there is no local name, or this object is otherwise not

              applicable, then this object contains a zero-length string.

          </description>

        </column>

        <column name="ifInMulticastPkts" oid="1.3.6.1.2.1.31.1.1.1.2" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The number of packets, delivered by this sub-layer to a

              higher (sub-)layer, which were addressed to a multicast

              address at this sub-layer.  For a MAC layer protocol, this

              includes both Group and Functional addresses.

              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.

          </description>

        </column>

        <column name="ifInBroadcastPkts" oid="1.3.6.1.2.1.31.1.1.1.3" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The number of packets, delivered by this sub-layer to a

              higher (sub-)layer, which were addressed to a broadcast

              address at this sub-layer.

              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.

          </description>

        </column>

        <column name="ifOutMulticastPkts" oid="1.3.6.1.2.1.31.1.1.1.4" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of packets that higher-level protocols

              requested be transmitted, and which were addressed to a

              multicast address at this sub-layer, including those that

              were discarded or not sent.  For a MAC layer protocol, this

              includes both Group and Functional addresses.

              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.

          </description>

        </column>

        <column name="ifOutBroadcastPkts" oid="1.3.6.1.2.1.31.1.1.1.5" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter32"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of packets that higher-level protocols

              requested be transmitted, and which were addressed to a

              broadcast address at this sub-layer, including those that

              were discarded or not sent.

              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.

          </description>

        </column>

        <column name="ifHCInOctets" oid="1.3.6.1.2.1.31.1.1.1.6" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter64"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of octets received on the interface,

              including framing characters.  This object is a 64-bit

              version of ifInOctets.

              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.

          </description>

        </column>

        <column name="ifHCInUcastPkts" oid="1.3.6.1.2.1.31.1.1.1.7" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter64"/>

          </syntax>

          <access>readonly</access>

          <description>

              The number of packets, delivered by this sub-layer to a

              higher (sub-)layer, which were not addressed to a multicast

              or broadcast address at this sub-layer.  This object is a

              64-bit version of ifInUcastPkts.

              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.

          </description>

        </column>

        <column name="ifHCInMulticastPkts" oid="1.3.6.1.2.1.31.1.1.1.8" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter64"/>

          </syntax>

          <access>readonly</access>

          <description>

              The number of packets, delivered by this sub-layer to a

              higher (sub-)layer, which were addressed to a multicast

              address at this sub-layer.  For a MAC layer protocol, this

              includes both Group and Functional addresses.  This object

              is a 64-bit version of ifInMulticastPkts.

              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.

          </description>

        </column>

        <column name="ifHCInBroadcastPkts" oid="1.3.6.1.2.1.31.1.1.1.9" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter64"/>

          </syntax>

          <access>readonly</access>

          <description>

              The number of packets, delivered by this sub-layer to a

              higher (sub-)layer, which were addressed to a broadcast

              address at this sub-layer.  This object is a 64-bit version

              of ifInBroadcastPkts.

              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.

          </description>

        </column>

        <column name="ifHCOutOctets" oid="1.3.6.1.2.1.31.1.1.1.10" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter64"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of octets transmitted out of the

              interface, including framing characters.  This object is a

              64-bit version of ifOutOctets.

              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.

          </description>

        </column>

        <column name="ifHCOutUcastPkts" oid="1.3.6.1.2.1.31.1.1.1.11" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter64"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of packets that higher-level protocols

              requested be transmitted, and which were not addressed to a

              multicast or broadcast address at this sub-layer, including

              those that were discarded or not sent.  This object is a

              64-bit version of ifOutUcastPkts.

              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.

          </description>

        </column>

        <column name="ifHCOutMulticastPkts" oid="1.3.6.1.2.1.31.1.1.1.12" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter64"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of packets that higher-level protocols

              requested be transmitted, and which were addressed to a

              multicast address at this sub-layer, including those that

              were discarded or not sent.  For a MAC layer protocol, this

              includes both Group and Functional addresses.  This object

              is a 64-bit version of ifOutMulticastPkts.

              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.

          </description>

        </column>

        <column name="ifHCOutBroadcastPkts" oid="1.3.6.1.2.1.31.1.1.1.13" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Counter64"/>

          </syntax>

          <access>readonly</access>

          <description>

              The total number of packets that higher-level protocols

              requested be transmitted, and which were addressed to a

              broadcast address at this sub-layer, including those that

              were discarded or not sent.  This object is a 64-bit version

              of ifOutBroadcastPkts.

              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.

          </description>

        </column>

        <column name="ifLinkUpDownTrapEnable" oid="1.3.6.1.2.1.31.1.1.1.14" status="current">

          <syntax>

            <typedef basetype="Enumeration">

              <namednumber name="enabled" number="1"/>

              <namednumber name="disabled" number="2"/>

            </typedef>

          </syntax>

          <access>readwrite</access>

          <description>

              Indicates whether linkUp/linkDown traps should be generated

              for this interface.

              By default, this object should have the value enabled(1) for

              interfaces which do not operate on 'top' of any other

              interface (as defined in the ifStackTable), and disabled(2)

              otherwise.

          </description>

        </column>

        <column name="ifHighSpeed" oid="1.3.6.1.2.1.31.1.1.1.15" status="current">

          <syntax>

            <type module="SNMPv2-SMI" name="Gauge32"/>

          </syntax>

          <access>readonly</access>

          <description>

              An estimate of the interface's current bandwidth in units

              of 1,000,000 bits per second.  If this object reports a

              value of `n' then the speed of the interface is somewhere in

              the range of `n-500,000' to `n+499,999'.  For interfaces

              which do not vary in bandwidth or for those where no

              accurate estimation can be made, this object should contain

              the nominal bandwidth.  For a sub-layer which has no concept

              of bandwidth, this object should be zero.

          </description>

        </column>

        <column name="ifPromiscuousMode" oid="1.3.6.1.2.1.31.1.1.1.16" status="current">

          <syntax>

            <type module="SNMPv2-TC" name="TruthValue"/>

          </syntax>

          <access>readwrite</access>

          <description>

              This object has a value of false(2) if this interface only

              accepts packets/frames that are addressed to this station.

              This object has a value of true(1) when the station accepts

              all packets/frames transmitted on the media.  The value

              true(1) is only legal on certain types of media.  If legal,

              setting this object to a value of true(1) may require the

              interface to be reset before becoming effective.

              The value of ifPromiscuousMode does not affect the reception

              of broadcast and multicast packets/frames by the interface.

          </description>

        </column>

        <column name="ifConnectorPresent" oid="1.3.6.1.2.1.31.1.1.1.17" status="current">

          <syntax>

            <type module="SNMPv2-TC" name="TruthValue"/>

          </syntax>

          <access>readonly</access>

          <description>

              This object has the value 'true(1)' if the interface

              sublayer has a physical connector and the value 'false(2)'

              otherwise.

          </description>

        </column>

        <column name="ifAlias" oid="1.3.6.1.2.1.31.1.1.1.18" status="current">

          <syntax>

            <typedef basetype="OctetString">

              <parent module="SNMPv2-TC" name="DisplayString"/>

              <range min="0" max="64"/>

            </typedef>

          </syntax>

          <access>readwrite</access>

          <description>

              This object is an 'alias' name for the interface as

              specified by a network manager, and provides a non-volatile

              'handle' for the interface.

              On the first instantiation of an interface, the value of

              ifAlias associated with that interface is the zero-length

              string.  As and when a value is written into an instance of

              ifAlias through a network management set operation, then the

              agent must retain the supplied value in the ifAlias instance

              associated with the same interface for as long as that

              interface remains instantiated, including across all re-

              initializations/reboots of the network management system,

              including those which result in a change of the interface's

              ifIndex value.

              An example of the value which a network manager might store

              in this object for a WAN interface is the (Telco's) circuit

              number/identifier of the interface.

              Some agents may support write-access only for interfaces

              having particular values of ifType.  An agent which supports

              write access to this object is required to keep the value in

              non-volatile storage, but it may limit the length of new

              values depending on how much storage is already occupied by

              the current values for other interfaces.

          </description>

        </column>

        <column name="ifCounterDiscontinuityTime" oid="1.3.6.1.2.1.31.1.1.1.19" status="current">

          <syntax>

            <type module="SNMPv2-TC" name="TimeStamp"/>

          </syntax>

          <access>readonly</access>