IF-MIB DEFINITIONS ::= BEGIN


   IMPORTS
       MODULE-IDENTITY, OBJECT-TYPE, Counter32, Gauge32, Counter64,
       Integer32, TimeTicks, mib-2,
       NOTIFICATION-TYPE                        FROM SNMPv2-SMI
       TEXTUAL-CONVENTION, DisplayString,
       PhysAddress, TruthValue, RowStatus,
       TimeStamp, AutonomousType, TestAndIncr   FROM SNMPv2-TC
       MODULE-COMPLIANCE, OBJECT-GROUP          FROM SNMPv2-CONF
       snmpTraps                                FROM SNMPv2-MIB
       IANAifType                               FROM IANAifType-MIB;














   ifMIB MODULE-IDENTITY
       LAST-UPDATED "9611031355Z"
       ORGANIZATION "IETF Interfaces MIB Working Group"
       CONTACT-INFO
               "   Keith McCloghrie
                   Cisco Systems, Inc.
                   170 West Tasman Drive
                   San Jose, CA  95134-1706
                   US

                   408-526-5260
                   kzm@cisco.com"
       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."
       REVISION      "9602282155Z"
       DESCRIPTION
               "Revisions made by the Interfaces MIB WG."
       REVISION      "9311082155Z"
       DESCRIPTION
               "Initial revision, published as part of RFC 1573."
       ::= { mib-2 31 }


   ifMIBObjects OBJECT IDENTIFIER ::= { ifMIB 1 }

   interfaces   OBJECT IDENTIFIER ::= { mib-2 2 }


   OwnerString ::= TEXTUAL-CONVENTION
       DISPLAY-HINT "255a"
       STATUS       current
       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'."
       SYNTAX       OCTET STRING (SIZE(0..255))






   -- InterfaceIndex contains the semantics of ifIndex and
   -- should be used for any objects defined on other mib
   -- modules that need these semantics.

   InterfaceIndex ::= TEXTUAL-CONVENTION
       DISPLAY-HINT "d"
       STATUS       current
       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."
       SYNTAX       Integer32 (1..2147483647)


   InterfaceIndexOrZero ::= TEXTUAL-CONVENTION
       DISPLAY-HINT "d"
       STATUS       current
       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."
       SYNTAX       Integer32 (0..2147483647)


   ifNumber  OBJECT-TYPE
       SYNTAX      Integer32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
               "The number of network interfaces (regardless of their
               current state) present on this system."
       ::= { interfaces 1 }










   ifTableLastChange  OBJECT-TYPE
       SYNTAX      TimeTicks
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
               "The value of sysUpTime at the time of the last
               creation or deletion of an entry in the ifTable.  If
               the number of entries has been unchanged since the
               last re-initialization of the local network management
               subsystem, then this object contains a zero value."
       ::= { ifMIBObjects 5 }


   -- the Interfaces table

   -- The Interfaces table contains information on the entity's
   -- interfaces.  Each sub-layer below the internetwork-layer
   -- of a network interface is considered to be an interface.

   ifTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF IfEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
               "A list of interface entries.  The number of entries
               is given by the value of ifNumber."
       ::= { interfaces 2 }

   ifEntry OBJECT-TYPE
       SYNTAX      IfEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
               "An entry containing management information applicable
               to a particular interface."
       INDEX   { ifIndex }



       ::= { ifTable 1 }

   IfEntry ::=
       SEQUENCE {
           ifIndex                 InterfaceIndex,
           ifDescr                 DisplayString,
           ifType                  IANAifType,
           ifMtu                   Integer32,
           ifSpeed                 Gauge32,





           ifPhysAddress           PhysAddress,
           ifAdminStatus           INTEGER,
           ifOperStatus            INTEGER,
           ifLastChange            TimeTicks,
           ifInOctets              Counter32,
           ifInUcastPkts           Counter32,
           ifInNUcastPkts          Counter32,  -- deprecated
           ifInDiscards            Counter32,
           ifInErrors              Counter32,
           ifInUnknownProtos       Counter32,
           ifOutOctets             Counter32,
           ifOutUcastPkts          Counter32,
           ifOutNUcastPkts         Counter32,  -- deprecated
           ifOutDiscards           Counter32,
           ifOutErrors             Counter32,
           ifOutQLen               Gauge32,    -- deprecated
           ifSpecific              OBJECT IDENTIFIER -- deprecated
       }


   ifIndex OBJECT-TYPE
       SYNTAX      InterfaceIndex
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 1 }

   ifDescr OBJECT-TYPE
       SYNTAX      DisplayString (SIZE (0..255))
       MAX-ACCESS  read-only


       STATUS      current
       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."
       ::= { ifEntry 2 }








   ifType OBJECT-TYPE
       SYNTAX      IANAifType
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 3 }

   ifMtu OBJECT-TYPE
       SYNTAX      Integer32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 4 }

   ifSpeed OBJECT-TYPE
       SYNTAX      Gauge32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 5 }

   ifPhysAddress OBJECT-TYPE
       SYNTAX      PhysAddress
       MAX-ACCESS  read-only
       STATUS      current








       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."
       ::= { ifEntry 6 }

   ifAdminStatus OBJECT-TYPE
       SYNTAX  INTEGER {
                   up(1),       -- ready to pass packets
                   down(2),
                   testing(3)   -- in some test mode
               }
       MAX-ACCESS  read-write
       STATUS      current
       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)."
       ::= { ifEntry 7 }

   ifOperStatus OBJECT-TYPE
       SYNTAX  INTEGER {
                   up(1),        -- ready to pass packets
                   down(2),
                   testing(3),   -- in some test mode
                   unknown(4),   -- status can not be determined
                                 -- for some reason.
                   dormant(5),
                   notPresent(6),    -- some component is missing
                   lowerLayerDown(7) -- down due to state of
                                     -- lower-layer interface(s)
               }










       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 8 }

   ifLastChange OBJECT-TYPE
       SYNTAX      TimeTicks
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 9 }

   ifInOctets OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 10 }









   ifInUcastPkts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 11 }

   ifInNUcastPkts OBJECT-TYPE
       SYNTAX  Counter32
       MAX-ACCESS  read-only
       STATUS      deprecated
       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."
       ::= { ifEntry 12 }

   ifInDiscards OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."





       ::= { ifEntry 13 }

   ifInErrors OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 14 }

   ifInUnknownProtos OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 15 }












   ifOutOctets OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 16 }

   ifOutUcastPkts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 17 }

   ifOutNUcastPkts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      deprecated
       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."
       ::= { ifEntry 18 }

   ifOutDiscards OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 19 }

   ifOutErrors OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifEntry 20 }


   ifOutQLen OBJECT-TYPE
       SYNTAX      Gauge32
       MAX-ACCESS  read-only
       STATUS      deprecated
       DESCRIPTION
               "The length of the output packet queue (in packets)."
       ::= { ifEntry 21 }







   ifSpecific OBJECT-TYPE
       SYNTAX      OBJECT IDENTIFIER
       MAX-ACCESS  read-only
       STATUS      deprecated
       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
               1903.  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 }."
       ::= { ifEntry 22 }



   --
   --   Extension to the interface table
   --
   -- This table replaces the ifExtnsTable table.
   --

   ifXTable        OBJECT-TYPE
       SYNTAX      SEQUENCE OF IfXEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       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."
       ::= { ifMIBObjects 1 }

   ifXEntry        OBJECT-TYPE
       SYNTAX      IfXEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
               "An entry containing additional management information
               applicable to a particular interface."
       AUGMENTS    { ifEntry }
       ::= { ifXTable 1 }








   IfXEntry ::=
       SEQUENCE {
           ifName                  DisplayString,
           ifInMulticastPkts       Counter32,
           ifInBroadcastPkts       Counter32,
           ifOutMulticastPkts      Counter32,
           ifOutBroadcastPkts      Counter32,
           ifHCInOctets            Counter64,
           ifHCInUcastPkts         Counter64,
           ifHCInMulticastPkts     Counter64,
           ifHCInBroadcastPkts     Counter64,
           ifHCOutOctets           Counter64,
           ifHCOutUcastPkts        Counter64,
           ifHCOutMulticastPkts    Counter64,
           ifHCOutBroadcastPkts    Counter64,
           ifLinkUpDownTrapEnable  INTEGER,
           ifHighSpeed             Gauge32,
           ifPromiscuousMode       TruthValue,
           ifConnectorPresent      TruthValue,
           ifAlias                 DisplayString,
           ifCounterDiscontinuityTime TimeStamp
       }


   ifName OBJECT-TYPE
       SYNTAX      DisplayString
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 1 }






   ifInMulticastPkts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 2 }

   ifInBroadcastPkts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 3 }

   ifOutMulticastPkts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."





       ::= { ifXEntry 4 }

   ifOutBroadcastPkts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 5 }

   --
   -- High Capacity Counter objects.  These objects are all
   -- 64 bit versions of the "basic" ifTable counters.  These
   -- objects all have the same basic semantics as their 32-bit
   -- counterparts, however, their syntax has been extended
   -- to 64 bits.
   --

   ifHCInOctets OBJECT-TYPE
       SYNTAX      Counter64
       MAX-ACCESS  read-only
       STATUS      current

       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."
       ::= { ifXEntry 6 }












   ifHCInUcastPkts OBJECT-TYPE
       SYNTAX      Counter64
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 7 }

   ifHCInMulticastPkts OBJECT-TYPE
       SYNTAX      Counter64
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 8 }


   ifHCInBroadcastPkts OBJECT-TYPE
       SYNTAX      Counter64
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 9 }

   ifHCOutOctets OBJECT-TYPE
       SYNTAX      Counter64
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 10 }

   ifHCOutUcastPkts OBJECT-TYPE
       SYNTAX      Counter64
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 11 }

   ifHCOutMulticastPkts OBJECT-TYPE
       SYNTAX      Counter64
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 12 }

   ifHCOutBroadcastPkts OBJECT-TYPE
       SYNTAX      Counter64
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 13 }

   ifLinkUpDownTrapEnable  OBJECT-TYPE
       SYNTAX      INTEGER { enabled(1), disabled(2) }
       MAX-ACCESS  read-write
       STATUS      current
       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."
       ::= { ifXEntry 14 }

   ifHighSpeed OBJECT-TYPE
       SYNTAX      Gauge32
       MAX-ACCESS  read-only
       STATUS      current
       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."
       ::= { ifXEntry 15 }

   ifPromiscuousMode  OBJECT-TYPE
       SYNTAX      TruthValue
       MAX-ACCESS  read-write
       STATUS      current
       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."
       ::= { ifXEntry 16 }

   ifConnectorPresent   OBJECT-TYPE
       SYNTAX      TruthValue
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
               "This object has the value 'true(1)' if the interface
               sublayer has a physical connector and the value
               'false(2)' otherwise."
       ::= { ifXEntry 17 }

   ifAlias   OBJECT-TYPE
       SYNTAX      DisplayString (SIZE(0..64))
       MAX-ACCESS  read-write
       STATUS      current
       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."
       ::= { ifXEntry 18 }

   ifCounterDiscontinuityTime OBJECT-TYPE
       SYNTAX      TimeStamp
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
               "The value of sysUpTime on the most recent occasion at
               which any one or more of this interface's counters
               suffered a discontinuity.  The relevant counters are
               the specific instances associated with this interface
               of any Counter32 or Counter64 object contained in the
               ifTable or ifXTable.  If no such discontinuities have
               occurred since the last re-initialization of the local
               management subsystem, then this object contains a zero
               value."
       ::= { ifXEntry 19 }


   --           The Interface Stack Group
   --
   -- Implementation of this group is mandatory for all systems
   --

   ifStackTable  OBJECT-TYPE
        SYNTAX        SEQUENCE OF IfStackEntry
        MAX-ACCESS    not-accessible
        STATUS        current
        DESCRIPTION





               "The table containing information on the relationships
               between the multiple sub-layers of network interfaces.
               In particular, it contains information on which sub-
               layers run 'on top of' which other sub-layers, where
               each sub-layer corresponds to a conceptual row in the
               ifTable.  For example, when the sub-layer with ifIndex
               value x runs over the sub-layer with ifIndex value y,
               then this table contains:

                 ifStackStatus.x.y=active

               For each ifIndex value, I, which identifies an active
               interface, there are always at least two instantiated
               rows in this table associated with I.  For one of
               these rows, I is the value of ifStackHigherLayer; for
               the other, I is the value of ifStackLowerLayer.  (If I
               is not involved in multiplexing, then these are the
               only two rows associated with I.)

               For example, two rows exist even for an interface
               which has no others stacked on top or below it:

                 ifStackStatus.0.x=active
                 ifStackStatus.x.0=active "
        ::= { ifMIBObjects 2 }


   ifStackEntry  OBJECT-TYPE
        SYNTAX        IfStackEntry
        MAX-ACCESS    not-accessible
        STATUS        current
        DESCRIPTION
               "Information on a particular relationship between two
               sub-layers, specifying that one sub-layer runs on
               'top' of the other sub-layer.  Each sub-layer
               corresponds to a conceptual row in the ifTable."
        INDEX { ifStackHigherLayer, ifStackLowerLayer }
        ::= { ifStackTable 1 }


   IfStackEntry ::=
       SEQUENCE {
           ifStackHigherLayer  Integer32,
           ifStackLowerLayer   Integer32,
           ifStackStatus       RowStatus
        }







   ifStackHigherLayer  OBJECT-TYPE
        SYNTAX        Integer32
        MAX-ACCESS    not-accessible
        STATUS        current
        DESCRIPTION
               "The value of ifIndex corresponding to the higher
               sub-layer of the relationship, i.e., the sub-layer
               which runs on 'top' of the sub-layer identified by the
               corresponding instance of ifStackLowerLayer.  If there
               is no higher sub-layer (below the internetwork layer),
               then this object has the value 0."
        ::= { ifStackEntry 1 }


   ifStackLowerLayer  OBJECT-TYPE
        SYNTAX        Integer32
        MAX-ACCESS    not-accessible
        STATUS        current
        DESCRIPTION
               "The value of ifIndex corresponding to the lower sub-
               layer of the relationship, i.e., the sub-layer which
               runs 'below' the sub-layer identified by the
               corresponding instance of ifStackHigherLayer.  If
               there is no lower sub-layer, then this object has the
               value 0."
        ::= { ifStackEntry 2 }


   ifStackStatus  OBJECT-TYPE
       SYNTAX         RowStatus
       MAX-ACCESS     read-create
       STATUS         current
       DESCRIPTION
               "The status of the relationship between two sub-
               layers.

               Changing the value of this object from 'active' to
               'notInService' or 'destroy' will likely have
               consequences up and down the interface stack.  Thus,
               write access to this object is likely to be
               inappropriate for some types of interfaces, and many
               implementations will choose not to support write-
               access for any type of interface."
       ::= { ifStackEntry 3 }

   ifStackLastChange OBJECT-TYPE
       SYNTAX         TimeTicks
       MAX-ACCESS     read-only





       STATUS         current
       DESCRIPTION
               "The value of sysUpTime at the time of the last change
               of the (whole) interface stack.  A change of the
               interface stack is defined to be any creation,
               deletion, or change in value of any instance of
               ifStackStatus.  If the interface stack has been
               unchanged since the last re-initialization of the
               local network management subsystem, then this object
               contains a zero value."
       ::= { ifMIBObjects 6 }


   --   Generic Receive Address Table
   --
   -- This group of objects is mandatory for all types of
   -- interfaces which can receive packets/frames addressed to
   -- more than one address.
   --
   -- This table replaces the ifExtnsRcvAddr table.  The main
   -- difference is that this table makes use of the RowStatus
   -- textual convention, while ifExtnsRcvAddr did not.

   ifRcvAddressTable  OBJECT-TYPE
       SYNTAX      SEQUENCE OF IfRcvAddressEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
               "This table contains an entry for each address
               (broadcast, multicast, or uni-cast) for which the
               system will receive packets/frames on a particular
               interface, except as follows:

               - for an interface operating in promiscuous mode,
               entries are only required for those addresses for
               which the system would receive frames were it not
               operating in promiscuous mode.

               - for 802.5 functional addresses, only one entry is
               required, for the address which has the functional
               address bit ANDed with the bit mask of all functional
               addresses for which the interface will accept frames.

               A system is normally able to use any unicast address
               which corresponds to an entry in this table as a
               source address."
       ::= { ifMIBObjects 4 }






   ifRcvAddressEntry  OBJECT-TYPE
       SYNTAX      IfRcvAddressEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
               "A list of objects identifying an address for which
               the system will accept packets/frames on the
               particular interface identified by the index value
               ifIndex."
       INDEX  { ifIndex, ifRcvAddressAddress }
       ::= { ifRcvAddressTable 1 }

   IfRcvAddressEntry ::=
       SEQUENCE {
           ifRcvAddressAddress   PhysAddress,
           ifRcvAddressStatus    RowStatus,
           ifRcvAddressType      INTEGER
       }

   ifRcvAddressAddress OBJECT-TYPE
       SYNTAX      PhysAddress
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
               "An address for which the system will accept
               packets/frames on this entry's interface."

       ::= { ifRcvAddressEntry 1 }

   ifRcvAddressStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
               "This object is used to create and delete rows in the
               ifRcvAddressTable."

       ::= { ifRcvAddressEntry 2 }

   ifRcvAddressType OBJECT-TYPE
       SYNTAX      INTEGER {
                       other(1),
                       volatile(2),
                       nonVolatile(3)
                   }

       MAX-ACCESS  read-create
       STATUS      current





       DESCRIPTION
               "This object has the value nonVolatile(3) for those
               entries in the table which are valid and will not be
               deleted by the next restart of the managed system.
               Entries having the value volatile(2) are valid and
               exist, but have not been saved, so that will not exist
               after the next restart of the managed system.  Entries
               having the value other(1) are valid and exist but are
               not classified as to whether they will continue to
               exist after the next restart."

       DEFVAL  { volatile }
       ::= { ifRcvAddressEntry 3 }

   -- definition of interface-related traps.

   linkDown NOTIFICATION-TYPE
           OBJECTS { ifIndex, ifAdminStatus, ifOperStatus }
           STATUS  current
           DESCRIPTION
               "A linkDown trap signifies that the SNMPv2 entity,
               acting in an agent role, has detected that the
               ifOperStatus object for one of its communication links
               is about to enter the down state from some other state
               (but not from the notPresent state).  This other state
               is indicated by the included value of ifOperStatus."
       ::= { snmpTraps 3 }

   linkUp NOTIFICATION-TYPE
           OBJECTS { ifIndex, ifAdminStatus, ifOperStatus }
           STATUS  current
           DESCRIPTION
               "A linkDown trap signifies that the SNMPv2 entity,
               acting in an agent role, has detected that the
               ifOperStatus object for one of its communication links
               left the down state and transitioned into some other
               state (but not into the notPresent state).  This other
               state is indicated by the included value of
               ifOperStatus."
       ::= { snmpTraps 4 }

   -- conformance information

   ifConformance OBJECT IDENTIFIER ::= { ifMIB 2 }

   ifGroups      OBJECT IDENTIFIER ::= { ifConformance 1 }
   ifCompliances OBJECT IDENTIFIER ::= { ifConformance 2 }






   -- compliance statements

   ifCompliance2 MODULE-COMPLIANCE
       STATUS  current
       DESCRIPTION
               "The compliance statement for SNMPv2 entities which
               have network interfaces."

       MODULE  -- this module
           MANDATORY-GROUPS { ifGeneralInformationGroup, ifStackGroup2,
                              ifCounterDiscontinuityGroup }

           GROUP       ifFixedLengthGroup
           DESCRIPTION
               "This group is mandatory for all network interfaces
               which are character-oriented or transmit data in
               fixed-length transmission units."

           GROUP       ifHCFixedLengthGroup
           DESCRIPTION
               "This group is mandatory only for those network
               interfaces which are character-oriented or transmit
               data in fixed-length transmission units, and for which
               the value of the corresponding instance of ifSpeed is
               greater than 20,000,000 bits/second."

           GROUP       ifPacketGroup
           DESCRIPTION
               "This group is mandatory for all network interfaces
               which are packet-oriented."

           GROUP       ifHCPacketGroup
           DESCRIPTION
               "This group is mandatory only for those network
               interfaces which are packet-oriented and for which the
               value of the corresponding instance of ifSpeed is
               greater than 650,000,000 bits/second."

           GROUP       ifRcvAddressGroup
           DESCRIPTION
               "The applicability of this group MUST be defined by
               the media-specific MIBs.  Media-specific MIBs must
               define the exact meaning, use, and semantics of the
               addresses in this group."









           OBJECT      ifLinkUpDownTrapEnable
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT      ifPromiscuousMode
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT      ifStackStatus
           SYNTAX      INTEGER { active(1) } -- subset of RowStatus
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required, and only one of the six
               enumerated values for the RowStatus textual convention
               need be supported, specifically: active(1)."

           OBJECT       ifAdminStatus
           SYNTAX       INTEGER { up(1), down(2) }
           MIN-ACCESS   read-only
           DESCRIPTION
               "Write access is not required, nor is support for the
               value testing(3)."

           OBJECT       ifAlias
           MIN-ACCESS   read-only
           DESCRIPTION
               "Write access is not required."

       ::= { ifCompliances 2 }

   -- units of conformance

   ifGeneralInformationGroup    OBJECT-GROUP
       OBJECTS { ifIndex, ifDescr, ifType, ifSpeed, ifPhysAddress,
                 ifAdminStatus, ifOperStatus, ifLastChange,
                 ifLinkUpDownTrapEnable, ifConnectorPresent,
                 ifHighSpeed, ifName, ifNumber, ifAlias,
                 ifTableLastChange }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               applicable to all network interfaces."
       ::= { ifGroups 10 }

   -- the following five groups are mutually exclusive; at most
   -- one of these groups is implemented for any interface





   ifFixedLengthGroup    OBJECT-GROUP
       OBJECTS { ifInOctets, ifOutOctets, ifInUnknownProtos,
                 ifInErrors, ifOutErrors }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to non-high speed (non-high speed interfaces
               transmit and receive at speeds less than or equal to
               20,000,000 bits/second) character-oriented or fixed-
               length-transmission network interfaces."
       ::= { ifGroups 2 }

   ifHCFixedLengthGroup    OBJECT-GROUP
       OBJECTS { ifHCInOctets, ifHCOutOctets,
                 ifInOctets, ifOutOctets, ifInUnknownProtos,
                 ifInErrors, ifOutErrors }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to high speed (greater than 20,000,000
               bits/second) character-oriented or fixed-length-
               transmission network interfaces."
       ::= { ifGroups 3 }

   ifPacketGroup    OBJECT-GROUP
       OBJECTS { ifInOctets, ifOutOctets, ifInUnknownProtos,
                 ifInErrors, ifOutErrors,
                 ifMtu, ifInUcastPkts, ifInMulticastPkts,
                 ifInBroadcastPkts, ifInDiscards,
                 ifOutUcastPkts, ifOutMulticastPkts,
                 ifOutBroadcastPkts, ifOutDiscards,
                 ifPromiscuousMode }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to non-high speed (non-high speed interfaces
               transmit and receive at speeds less than or equal to
               20,000,000 bits/second) packet-oriented network
               interfaces."
       ::= { ifGroups 4 }

   ifHCPacketGroup    OBJECT-GROUP
       OBJECTS { ifHCInOctets, ifHCOutOctets,
                 ifInOctets, ifOutOctets, ifInUnknownProtos,
                 ifInErrors, ifOutErrors,
                 ifMtu, ifInUcastPkts, ifInMulticastPkts,
                 ifInBroadcastPkts, ifInDiscards,
                 ifOutUcastPkts, ifOutMulticastPkts,





                 ifOutBroadcastPkts, ifOutDiscards,
                 ifPromiscuousMode }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to high speed (greater than 20,000,000
               bits/second but less than or equal to 650,000,000
               bits/second) packet-oriented network interfaces."
       ::= { ifGroups 5 }

   ifVHCPacketGroup    OBJECT-GROUP
       OBJECTS { ifHCInUcastPkts, ifHCInMulticastPkts,
                 ifHCInBroadcastPkts, ifHCOutUcastPkts,
                 ifHCOutMulticastPkts, ifHCOutBroadcastPkts,
                 ifHCInOctets, ifHCOutOctets,
                 ifInOctets, ifOutOctets, ifInUnknownProtos,
                 ifInErrors, ifOutErrors,
                 ifMtu, ifInUcastPkts, ifInMulticastPkts,
                 ifInBroadcastPkts, ifInDiscards,
                 ifOutUcastPkts, ifOutMulticastPkts,
                 ifOutBroadcastPkts, ifOutDiscards,
                 ifPromiscuousMode }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to higher speed (greater than 650,000,000
               bits/second) packet-oriented network interfaces."
       ::= { ifGroups 6 }

   ifRcvAddressGroup    OBJECT-GROUP
       OBJECTS { ifRcvAddressStatus, ifRcvAddressType }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information on the
               multiple addresses which an interface receives."
       ::= { ifGroups 7 }

   ifStackGroup2    OBJECT-GROUP
       OBJECTS { ifStackStatus, ifStackLastChange }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information on the
               layering of MIB-II interfaces."
       ::= { ifGroups 11 }

   ifCounterDiscontinuityGroup  OBJECT-GROUP
       OBJECTS { ifCounterDiscontinuityTime }
       STATUS  current





       DESCRIPTION
               "A collection of objects providing information
               specific to interface counter discontinuities."
       ::= { ifGroups 13 }

   -- Deprecated Definitions - Objects


   --
   --    The Interface Test Table
   --
   -- This group of objects is optional.  However, a media-specific
   -- MIB may make implementation of this group mandatory.
   --
   -- This table replaces the ifExtnsTestTable
   --

   ifTestTable   OBJECT-TYPE
       SYNTAX      SEQUENCE OF IfTestEntry
       MAX-ACCESS  not-accessible
       STATUS      deprecated
       DESCRIPTION
               "This table contains one entry per interface.  It
               defines objects which allow a network manager to
               instruct an agent to test an interface for various
               faults.  Tests for an interface are defined in the
               media-specific MIB for that interface.  After invoking
               a test, the object ifTestResult can be read to
               determine the outcome.  If an agent can not perform
               the test, ifTestResult is set to so indicate.  The
               object ifTestCode can be used to provide further
               test-specific or interface-specific (or even
               enterprise-specific) information concerning the
               outcome of the test.  Only one test can be in progress
               on each interface at any one time.  If one test is in
               progress when another test is invoked, the second test
               is rejected.  Some agents may reject a test when a
               prior test is active on another interface.

               Before starting a test, a manager-station must first
               obtain 'ownership' of the entry in the ifTestTable for
               the interface to be tested.  This is accomplished with
               the ifTestId and ifTestStatus objects as follows:

            try_again:
                get (ifTestId, ifTestStatus)
                while (ifTestStatus != notInUse)
                    /*





                     * Loop while a test is running or some other
                     * manager is configuring a test.
                     */
                    short delay
                    get (ifTestId, ifTestStatus)
                }

                /*
                 * Is not being used right now -- let's compete
                 * to see who gets it.
                 */
                lock_value = ifTestId

                if ( set(ifTestId = lock_value, ifTestStatus = inUse,
                         ifTestOwner = 'my-IP-address') == FAILURE)
                    /*
                     * Another manager got the ifTestEntry -- go
                     * try again
                     */
                    goto try_again;

                /*
                 * I have the lock
                 */
                set up any test parameters.

                /*
                 * This starts the test
                 */
                set(ifTestType = test_to_run);

                wait for test completion by polling ifTestResult

                when test completes, agent sets ifTestResult
                     agent also sets ifTestStatus = 'notInUse'

                retrieve any additional test results, and ifTestId

                if (ifTestId == lock_value+1) results are valid

              A manager station first retrieves the value of the
              appropriate ifTestId and ifTestStatus objects,
              periodically repeating the retrieval if necessary,
              until the value of ifTestStatus is 'notInUse'.  The
              manager station then tries to set the same ifTestId
              object to the value it just retrieved, the same
              ifTestStatus object to 'inUse', and the corresponding
              ifTestOwner object to a value indicating itself.  If





              the set operation succeeds then the manager has
              obtained ownership of the ifTestEntry, and the value of
              the ifTestId object is incremented by the agent (per
              the semantics of TestAndIncr).  Failure of the set
              operation indicates that some other manager has
              obtained ownership of the ifTestEntry.

              Once ownership is obtained, any test parameters can be
              setup, and then the test is initiated by setting
              ifTestType.  On completion of the test, the agent sets
              ifTestStatus to 'notInUse'.  Once this occurs, the
              manager can retrieve the results.  In the (rare) event
              that the invocation of tests by two network managers
              were to overlap, then there would be a possibility that
              the first test's results might be overwritten by the
              second test's results prior to the first results being
              read.  This unlikely circumstance can be detected by a
              network manager retrieving ifTestId at the same time as
              retrieving the test results, and ensuring that the
              results are for the desired request.

              If ifTestType is not set within an abnormally long
              period of time after ownership is obtained, the agent
              should time-out the manager, and reset the value of the
              ifTestStatus object back to 'notInUse'.  It is
              suggested that this time-out period be 5 minutes.

              In general, a management station must not retransmit a
              request to invoke a test for which it does not receive
              a response; instead, it properly inspects an agent's
              MIB to determine if the invocation was successful.
              Only if the invocation was unsuccessful, is the
              invocation request retransmitted.

              Some tests may require the interface to be taken off-
              line in order to execute them, or may even require the
              agent to reboot after completion of the test.  In these
              circumstances, communication with the management
              station invoking the test may be lost until after
              completion of the test.  An agent is not required to
              support such tests.  However, if such tests are
              supported, then the agent should make every effort to
              transmit a response to the request which invoked the
              test prior to losing communication.  When the agent is
              restored to normal service, the results of the test are
              properly made available in the appropriate objects.
              Note that this requires that the ifIndex value assigned
              to an interface must be unchanged even if the test





              causes a reboot.  An agent must reject any test for
              which it cannot, perhaps due to resource constraints,
              make available at least the minimum amount of
              information after that test completes."
       ::= { ifMIBObjects 3 }

   ifTestEntry OBJECT-TYPE
       SYNTAX       IfTestEntry
       MAX-ACCESS   not-accessible
       STATUS       deprecated
       DESCRIPTION
               "An entry containing objects for invoking tests on an
               interface."
       AUGMENTS  { ifEntry }
       ::= { ifTestTable 1 }

   IfTestEntry ::=
       SEQUENCE {
           ifTestId           TestAndIncr,
           ifTestStatus       INTEGER,
           ifTestType         AutonomousType,
           ifTestResult       INTEGER,
           ifTestCode         OBJECT IDENTIFIER,
           ifTestOwner        OwnerString
       }

   ifTestId         OBJECT-TYPE
       SYNTAX       TestAndIncr
       MAX-ACCESS   read-write
       STATUS       deprecated
       DESCRIPTION
               "This object identifies the current invocation of the
               interface's test."
       ::= { ifTestEntry 1 }

   ifTestStatus     OBJECT-TYPE
       SYNTAX       INTEGER { notInUse(1), inUse(2) }
       MAX-ACCESS   read-write
       STATUS       deprecated
       DESCRIPTION
               "This object indicates whether or not some manager
               currently has the necessary 'ownership' required to
               invoke a test on this interface.  A write to this
               object is only successful when it changes its value
               from 'notInUse(1)' to 'inUse(2)'.  After completion of
               a test, the agent resets the value back to
               'notInUse(1)'."
       ::= { ifTestEntry 2 }





   ifTestType       OBJECT-TYPE
       SYNTAX       AutonomousType
       MAX-ACCESS   read-write
       STATUS       deprecated
       DESCRIPTION
               "A control variable used to start and stop operator-
               initiated interface tests.  Most OBJECT IDENTIFIER
               values assigned to tests are defined elsewhere, in
               association with specific types of interface.
               However, this document assigns a value for a full-
               duplex loopback test, and defines the special meanings
               of the subject identifier:

                   noTest  OBJECT IDENTIFIER ::= { 0 0 }

               When the value noTest is written to this object, no
               action is taken unless a test is in progress, in which
               case the test is aborted.  Writing any other value to
               this object is only valid when no test is currently in
               progress, in which case the indicated test is
               initiated.

               When read, this object always returns the most recent
               value that ifTestType was set to.  If it has not been
               set since the last initialization of the network
               management subsystem on the agent, a value of noTest
               is returned."
       ::= { ifTestEntry 3 }

   ifTestResult  OBJECT-TYPE
       SYNTAX       INTEGER {
                        none(1),          -- no test yet requested
                        success(2),
                        inProgress(3),
                        notSupported(4),
                        unAbleToRun(5),   -- due to state of system
                        aborted(6),
                        failed(7)
                    }
       MAX-ACCESS   read-only
       STATUS       deprecated
       DESCRIPTION
               "This object contains the result of the most recently
               requested test, or the value none(1) if no tests have
               been requested since the last reset.  Note that this
               facility provides no provision for saving the results
               of one test when starting another, as could be
               required if used by multiple managers concurrently."





       ::= { ifTestEntry 4 }

   ifTestCode  OBJECT-TYPE
       SYNTAX       OBJECT IDENTIFIER
       MAX-ACCESS   read-only
       STATUS       deprecated
       DESCRIPTION
               "This object contains a code which contains more
               specific information on the test result, for example
               an error-code after a failed test.  Error codes and
               other values this object may take are specific to the
               type of interface and/or test.  The value may have the
               semantics of either the AutonomousType or
               InstancePointer textual conventions as defined in RFC
               1903.  The identifier:

                   testCodeUnknown  OBJECT IDENTIFIER ::= { 0 0 }

               is defined for use if no additional result code is
               available."
       ::= { ifTestEntry 5 }

   ifTestOwner      OBJECT-TYPE
       SYNTAX       OwnerString
       MAX-ACCESS   read-write
       STATUS       deprecated
       DESCRIPTION
               "The entity which currently has the 'ownership'
               required to invoke a test on this interface."
       ::= { ifTestEntry 6 }

   -- Deprecated Definitions - Groups


   ifGeneralGroup    OBJECT-GROUP
       OBJECTS { ifDescr, ifType, ifSpeed, ifPhysAddress,
                 ifAdminStatus, ifOperStatus, ifLastChange,
                 ifLinkUpDownTrapEnable, ifConnectorPresent,
                 ifHighSpeed, ifName }
       STATUS  deprecated
       DESCRIPTION
               "A collection of objects deprecated in favour of
               ifGeneralInformationGroup."
       ::= { ifGroups 1 }


   ifTestGroup    OBJECT-GROUP
       OBJECTS { ifTestId, ifTestStatus, ifTestType,





                 ifTestResult, ifTestCode, ifTestOwner }
       STATUS  deprecated
       DESCRIPTION
               "A collection of objects providing the ability to
               invoke tests on an interface."
       ::= { ifGroups 8 }


   ifStackGroup    OBJECT-GROUP
       OBJECTS { ifStackStatus }
       STATUS  deprecated
       DESCRIPTION
               "The previous collection of objects providing
               information on the layering of MIB-II interfaces."
       ::= { ifGroups 9 }


   ifOldObjectsGroup    OBJECT-GROUP
       OBJECTS { ifInNUcastPkts, ifOutNUcastPkts,
                 ifOutQLen, ifSpecific }
       STATUS  deprecated
       DESCRIPTION
               "The collection of objects deprecated from the
               original MIB-II interfaces group."
       ::= { ifGroups 12 }


   -- Deprecated Definitions - Compliance

   ifCompliance MODULE-COMPLIANCE
       STATUS  deprecated
       DESCRIPTION
               "The previous compliance statement for SNMPv2 entities
               which have network interfaces."

       MODULE  -- this module
           MANDATORY-GROUPS { ifGeneralGroup, ifStackGroup }

           GROUP       ifFixedLengthGroup
           DESCRIPTION
               "This group is mandatory for all network interfaces
               which are character-oriented or transmit data in
               fixed-length transmission units."

           GROUP       ifHCFixedLengthGroup
           DESCRIPTION
               "This group is mandatory only for those network
               interfaces which are character-oriented or transmit





               data in fixed-length transmission units, and for which
               the value of the corresponding instance of ifSpeed is
               greater than 20,000,000 bits/second."

           GROUP       ifPacketGroup
           DESCRIPTION
               "This group is mandatory for all network interfaces
               which are packet-oriented."

           GROUP       ifHCPacketGroup
           DESCRIPTION
               "This group is mandatory only for those network
               interfaces which are packet-oriented and for which the
               value of the corresponding instance of ifSpeed is
               greater than 650,000,000 bits/second."

           GROUP       ifTestGroup
           DESCRIPTION
               "This group is optional.  Media-specific MIBs which
               require interface tests are strongly encouraged to use
               this group for invoking tests and reporting results.
               A medium specific MIB which has mandatory tests may
               make implementation of this group mandatory."

           GROUP       ifRcvAddressGroup
           DESCRIPTION
               "The applicability of this group MUST be defined by
               the media-specific MIBs.  Media-specific MIBs must
               define the exact meaning, use, and semantics of the
               addresses in this group."

           OBJECT      ifLinkUpDownTrapEnable
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT      ifPromiscuousMode
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT      ifStackStatus
           SYNTAX      INTEGER { active(1) } -- subset of RowStatus
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required, and only one of the six
               enumerated values for the RowStatus textual convention
               need be supported, specifically: active(1)."





           OBJECT       ifAdminStatus
           SYNTAX       INTEGER { up(1), down(2) }
           MIN-ACCESS   read-only
           DESCRIPTION
               "Write access is not required, nor is support for the
               value testing(3)."
       ::= { ifCompliances 1 }

   END


