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RFC 4293

 
 
 

Management Information Base for the Internet Protocol (IP)

Part 2 of 6, p. 13 to 33
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5.  Definitions

   The following MIB module imports from the IF-MIB [6] and the INET-
   ADDRESS-MIB [7] and references Neighbor Discovery [4], the IPv6
   Stateless Address Autoconfiguration protocol [5], the Default Router
   Preferences document [8], ARP [10] and the IPv6 address architecture
   document [17].

IP-MIB DEFINITIONS ::= BEGIN

IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE,
    Integer32, Counter32, IpAddress,
    mib-2, Unsigned32, Counter64,
    zeroDotZero                        FROM SNMPv2-SMI
    PhysAddress, TruthValue,
    TimeStamp, RowPointer,
    TEXTUAL-CONVENTION, TestAndIncr,
    RowStatus, StorageType             FROM SNMPv2-TC
    MODULE-COMPLIANCE, OBJECT-GROUP    FROM SNMPv2-CONF
    InetAddress, InetAddressType,
    InetAddressPrefixLength,
    InetVersion, InetZoneIndex         FROM INET-ADDRESS-MIB
    InterfaceIndex                     FROM IF-MIB;

ipMIB MODULE-IDENTITY
    LAST-UPDATED "200602020000Z"
    ORGANIZATION "IETF IPv6 MIB Revision Team"
    CONTACT-INFO
           "Editor:

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            Shawn A. Routhier
            Interworking Labs
            108 Whispering Pines Dr. Suite 235
            Scotts Valley, CA 95066
            USA
            EMail: <sar@iwl.com>"
    DESCRIPTION
           "The MIB module for managing IP and ICMP implementations, but
            excluding their management of IP routes.

            Copyright (C) The Internet Society (2006).  This version of
            this MIB module is part of RFC 4293; see the RFC itself for
            full legal notices."

    REVISION      "200602020000Z"
    DESCRIPTION
           "The IP version neutral revision with added IPv6 objects for
            ND, default routers, and router advertisements.  As well as
            being the successor to RFC 2011, this MIB is also the
            successor to RFCs 2465 and 2466.  Published as RFC 4293."

    REVISION      "199411010000Z"
    DESCRIPTION
           "A separate MIB module (IP-MIB) for IP and ICMP management
            objects.  Published as RFC 2011."

    REVISION      "199103310000Z"
    DESCRIPTION
           "The initial revision of this MIB module was part of MIB-II,
            which was published as RFC 1213."
    ::= { mib-2 48}

--
-- The textual conventions we define and use in this MIB.
--

IpAddressOriginTC ::= TEXTUAL-CONVENTION
    STATUS     current
    DESCRIPTION
           "The origin of the address.

            manual(2) indicates that the address was manually configured
            to a specified address, e.g., by user configuration.

            dhcp(4) indicates an address that was assigned to this
            system by a DHCP server.

            linklayer(5) indicates an address created by IPv6 stateless

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            auto-configuration.

            random(6) indicates an address chosen by the system at
            random, e.g., an IPv4 address within 169.254/16, or an RFC
            3041 privacy address."
    SYNTAX     INTEGER {
        other(1),
        manual(2),
        dhcp(4),
        linklayer(5),
        random(6)
    }

IpAddressStatusTC ::= TEXTUAL-CONVENTION
    STATUS     current
    DESCRIPTION
           "The status of an address.  Most of the states correspond to
            states from the IPv6 Stateless Address Autoconfiguration
            protocol.

            The preferred(1) state indicates that this is a valid
            address that can appear as the destination or source address
            of a packet.

            The deprecated(2) state indicates that this is a valid but
            deprecated address that should no longer be used as a source
            address in new communications, but packets addressed to such
            an address are processed as expected.

            The invalid(3) state indicates that this isn't a valid
            address and it shouldn't appear as the destination or source
            address of a packet.

            The inaccessible(4) state indicates that the address is not
            accessible because the interface to which this address is
            assigned is not operational.

            The unknown(5) state indicates that the status cannot be
            determined for some reason.

            The tentative(6) state indicates that the uniqueness of the
            address on the link is being verified.  Addresses in this
            state should not be used for general communication and
            should only be used to determine the uniqueness of the
            address.

            The duplicate(7) state indicates the address has been
            determined to be non-unique on the link and so must not be

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            used.

            The optimistic(8) state indicates the address is available
            for use, subject to restrictions, while its uniqueness on
            a link is being verified.

            In the absence of other information, an IPv4 address is
            always preferred(1)."
    REFERENCE "RFC 2462"
    SYNTAX     INTEGER {
        preferred(1),
        deprecated(2),
        invalid(3),
        inaccessible(4),
        unknown(5),
        tentative(6),
        duplicate(7),
        optimistic(8)
    }

IpAddressPrefixOriginTC ::= TEXTUAL-CONVENTION
    STATUS     current
    DESCRIPTION
           "The origin of this prefix.

            manual(2) indicates a prefix that was manually configured.

            wellknown(3) indicates a well-known prefix, e.g., 169.254/16
            for IPv4 auto-configuration or fe80::/10 for IPv6 link-local
            addresses.  Well known prefixes may be assigned by IANA,
            the address registries, or by specification in a standards
            track RFC.

            dhcp(4) indicates a prefix that was assigned by a DHCP
            server.

            routeradv(5) indicates a prefix learned from a router
            advertisement.

            Note: while IpAddressOriginTC and IpAddressPrefixOriginTC
            are similar, they are not identical.  The first defines how
            an address was created, while the second defines how a
            prefix was found."
    SYNTAX     INTEGER {
        other(1),
        manual(2),
        wellknown(3),
        dhcp(4),

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        routeradv(5)
    }

Ipv6AddressIfIdentifierTC ::= TEXTUAL-CONVENTION
     DISPLAY-HINT "2x:"
     STATUS       current
     DESCRIPTION
       "This data type is used to model IPv6 address
       interface identifiers.  This is a binary string
       of up to 8 octets in network byte-order."
     SYNTAX      OCTET STRING (SIZE (0..8))

--
-- the IP general group
-- some objects that affect all of IPv4
--

ip       OBJECT IDENTIFIER ::= { mib-2 4 }

ipForwarding OBJECT-TYPE
    SYNTAX     INTEGER {
                    forwarding(1),    -- acting as a router
                    notForwarding(2)  -- NOT acting as a router
               }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
           "The indication of whether this entity is acting as an IPv4
            router in respect to the forwarding of datagrams received
            by, but not addressed to, this entity.  IPv4 routers forward
            datagrams.  IPv4 hosts do not (except those source-routed
            via the host).

            When this object is written, the entity should save the
            change to non-volatile storage and restore the object from
            non-volatile storage upon re-initialization of the system.
            Note: a stronger requirement is not used because this object
            was previously defined."
    ::= { ip 1 }

ipDefaultTTL OBJECT-TYPE
    SYNTAX     Integer32 (1..255)
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
           "The default value inserted into the Time-To-Live field of
            the IPv4 header of datagrams originated at this entity,
            whenever a TTL value is not supplied by the transport layer

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            protocol.

            When this object is written, the entity should save the
            change to non-volatile storage and restore the object from
            non-volatile storage upon re-initialization of the system.
            Note: a stronger requirement is not used because this object
            was previously defined."
    ::= { ip 2 }

ipReasmTimeout OBJECT-TYPE
    SYNTAX     Integer32
    UNITS      "seconds"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The maximum number of seconds that received fragments are
            held while they are awaiting reassembly at this entity."
    ::= { ip 13 }

--
-- the IPv6 general group
-- Some objects that affect all of IPv6
--

ipv6IpForwarding OBJECT-TYPE
    SYNTAX     INTEGER {
                    forwarding(1),    -- acting as a router
                    notForwarding(2)  -- NOT acting as a router
               }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
           "The indication of whether this entity is acting as an IPv6
            router on any interface in respect to the forwarding of
            datagrams received by, but not addressed to, this entity.
            IPv6 routers forward datagrams.  IPv6 hosts do not (except
            those source-routed via the host).

            When this object is written, the entity SHOULD save the
            change to non-volatile storage and restore the object from
            non-volatile storage upon re-initialization of the system."
    ::= { ip 25 }

ipv6IpDefaultHopLimit OBJECT-TYPE
    SYNTAX     Integer32 (0..255)
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION

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           "The default value inserted into the Hop Limit field of the
            IPv6 header of datagrams originated at this entity whenever
            a Hop Limit value is not supplied by the transport layer
            protocol.

            When this object is written, the entity SHOULD save the
            change to non-volatile storage and restore the object from
            non-volatile storage upon re-initialization of the system."
    REFERENCE "RFC 2461 Section 6.3.2"
    ::= { ip 26 }

--
-- IPv4 Interface Table
--

ipv4InterfaceTableLastChange OBJECT-TYPE
    SYNTAX     TimeStamp
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The value of sysUpTime on the most recent occasion at which
            a row in the ipv4InterfaceTable was added or deleted, or
            when an ipv4InterfaceReasmMaxSize or an
            ipv4InterfaceEnableStatus object was modified.

            If new objects are added to the ipv4InterfaceTable that
            require the ipv4InterfaceTableLastChange to be updated when
            they are modified, they must specify that requirement in
            their description clause."
    ::= { ip 27 }

ipv4InterfaceTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF Ipv4InterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
           "The table containing per-interface IPv4-specific
            information."
    ::= { ip 28 }

ipv4InterfaceEntry OBJECT-TYPE
    SYNTAX     Ipv4InterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
           "An entry containing IPv4-specific information for a specific
            interface."
    INDEX { ipv4InterfaceIfIndex }

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    ::= { ipv4InterfaceTable 1 }

Ipv4InterfaceEntry ::= SEQUENCE {
        ipv4InterfaceIfIndex         InterfaceIndex,
        ipv4InterfaceReasmMaxSize    Integer32,
        ipv4InterfaceEnableStatus    INTEGER,
        ipv4InterfaceRetransmitTime  Unsigned32
    }

ipv4InterfaceIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
           "The index value that uniquely identifies the interface to
            which this entry is applicable.  The interface identified by
            a particular value of this index is the same interface as
            identified by the same value of the IF-MIB's ifIndex."
    ::= { ipv4InterfaceEntry 1 }

ipv4InterfaceReasmMaxSize OBJECT-TYPE
    SYNTAX     Integer32 (0..65535)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The size of the largest IPv4 datagram that this entity can
            re-assemble from incoming IPv4 fragmented datagrams received
            on this interface."
    ::= { ipv4InterfaceEntry 2 }

ipv4InterfaceEnableStatus OBJECT-TYPE
    SYNTAX     INTEGER {
                 up(1),
                 down(2)
    }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
           "The indication of whether IPv4 is enabled (up) or disabled
            (down) on this interface.  This object does not affect the
            state of the interface itself, only its connection to an
            IPv4 stack.  The IF-MIB should be used to control the state
            of the interface."
    ::= { ipv4InterfaceEntry 3 }

ipv4InterfaceRetransmitTime OBJECT-TYPE
    SYNTAX     Unsigned32
    UNITS      "milliseconds"

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    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The time between retransmissions of ARP requests to a
            neighbor when resolving the address or when probing the
            reachability of a neighbor."
    REFERENCE "RFC 1122"
    DEFVAL { 1000 }
    ::= { ipv4InterfaceEntry 4 }

--
-- v6 interface table
--

ipv6InterfaceTableLastChange OBJECT-TYPE
    SYNTAX     TimeStamp
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The value of sysUpTime on the most recent occasion at which
            a row in the ipv6InterfaceTable was added or deleted or when
            an ipv6InterfaceReasmMaxSize, ipv6InterfaceIdentifier,
            ipv6InterfaceEnableStatus, ipv6InterfaceReachableTime,
            ipv6InterfaceRetransmitTime, or ipv6InterfaceForwarding
            object was modified.

            If new objects are added to the ipv6InterfaceTable that
            require the ipv6InterfaceTableLastChange to be updated when
            they are modified, they must specify that requirement in
            their description clause."
    ::= { ip 29 }

ipv6InterfaceTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF Ipv6InterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
           "The table containing per-interface IPv6-specific
            information."
    ::= { ip 30 }

ipv6InterfaceEntry OBJECT-TYPE
    SYNTAX     Ipv6InterfaceEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
           "An entry containing IPv6-specific information for a given
            interface."

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    INDEX { ipv6InterfaceIfIndex }
    ::= { ipv6InterfaceTable 1 }

Ipv6InterfaceEntry ::= SEQUENCE {
        ipv6InterfaceIfIndex         InterfaceIndex,
        ipv6InterfaceReasmMaxSize    Unsigned32,
        ipv6InterfaceIdentifier      Ipv6AddressIfIdentifierTC,
        ipv6InterfaceEnableStatus    INTEGER,
        ipv6InterfaceReachableTime   Unsigned32,
        ipv6InterfaceRetransmitTime  Unsigned32,
        ipv6InterfaceForwarding      INTEGER
    }

ipv6InterfaceIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
           "The index value that uniquely identifies the interface to
            which this entry is applicable.  The interface identified by
            a particular value of this index is the same interface as
            identified by the same value of the IF-MIB's ifIndex."
    ::= { ipv6InterfaceEntry 1 }

ipv6InterfaceReasmMaxSize OBJECT-TYPE
    SYNTAX     Unsigned32 (1500..65535)
    UNITS      "octets"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The size of the largest IPv6 datagram that this entity can
            re-assemble from incoming IPv6 fragmented datagrams received
            on this interface."
    ::= { ipv6InterfaceEntry 2 }

ipv6InterfaceIdentifier OBJECT-TYPE
    SYNTAX     Ipv6AddressIfIdentifierTC
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The Interface Identifier for this interface.  The Interface
            Identifier is combined with an address prefix to form an
            interface address.

            By default, the Interface Identifier is auto-configured
            according to the rules of the link type to which this
            interface is attached.

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            A zero length identifier may be used where appropriate.  One
            possible example is a loopback interface."
    ::= { ipv6InterfaceEntry 3 }

-- This object ID is reserved as it was used in earlier versions of
-- the MIB module.  In theory, OIDs are not assigned until the
-- specification is released as an RFC; however, as some companies
-- may have shipped code based on earlier versions of the MIB, it
-- seems best to reserve this OID.  This OID had been
-- ipv6InterfacePhysicalAddress.
-- ::= { ipv6InterfaceEntry 4}

ipv6InterfaceEnableStatus OBJECT-TYPE
    SYNTAX     INTEGER {
                 up(1),
                 down(2)
    }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
           "The indication of whether IPv6 is enabled (up) or disabled
            (down) on this interface.  This object does not affect the
            state of the interface itself, only its connection to an
            IPv6 stack.  The IF-MIB should be used to control the state
            of the interface.

            When this object is written, the entity SHOULD save the
            change to non-volatile storage and restore the object from
            non-volatile storage upon re-initialization of the system."
    ::= { ipv6InterfaceEntry 5 }

ipv6InterfaceReachableTime OBJECT-TYPE
    SYNTAX     Unsigned32
    UNITS      "milliseconds"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The time a neighbor is considered reachable after receiving
            a reachability confirmation."
    REFERENCE "RFC 2461, Section 6.3.2"
    ::= { ipv6InterfaceEntry 6 }

ipv6InterfaceRetransmitTime OBJECT-TYPE
    SYNTAX     Unsigned32
    UNITS      "milliseconds"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION

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           "The time between retransmissions of Neighbor Solicitation
            messages to a neighbor when resolving the address or when
            probing the reachability of a neighbor."
    REFERENCE "RFC 2461, Section 6.3.2"
    ::= { ipv6InterfaceEntry 7 }

ipv6InterfaceForwarding OBJECT-TYPE
    SYNTAX     INTEGER {
                    forwarding(1),    -- acting as a router
                    notForwarding(2)  -- NOT acting as a router
               }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
           "The indication of whether this entity is acting as an IPv6
            router on this interface with respect to the forwarding of
            datagrams received by, but not addressed to, this entity.
            IPv6 routers forward datagrams.  IPv6 hosts do not (except
            those source-routed via the host).

            This object is constrained by ipv6IpForwarding and is
            ignored if ipv6IpForwarding is set to notForwarding.  Those
            systems that do not provide per-interface control of the
            forwarding function should set this object to forwarding for
            all interfaces and allow the ipv6IpForwarding object to
            control the forwarding capability.

            When this object is written, the entity SHOULD save the
            change to non-volatile storage and restore the object from
            non-volatile storage upon re-initialization of the system."
    ::= { ipv6InterfaceEntry 8 }

--
-- Per-Interface or System-Wide IP statistics.
--
-- The following two tables, ipSystemStatsTable and ipIfStatsTable,
-- are intended to provide the same counters at different granularities.
-- The ipSystemStatsTable provides system wide counters aggregating
-- the traffic counters for all interfaces for a given address type.
-- The ipIfStatsTable provides the same counters but for specific
-- interfaces rather than as an aggregate.
--
-- Note well: If a system provides both system-wide and interface-
-- specific values, the system-wide value may not be equal to the sum
-- of the interface-specific values across all interfaces due to e.g.,
-- dynamic interface creation/deletion.
--
-- Note well: Both of these tables contain some items that are

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-- represented by two objects, representing the value in either 32
-- or 64 bits.  For those objects, the 32-bit value MUST be the low
-- order 32 bits of the 64-bit value.  Also note that the 32-bit
-- counters must be included when the 64-bit counters are included.

ipTrafficStats OBJECT IDENTIFIER ::= { ip 31 }

ipSystemStatsTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpSystemStatsEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
           "The table containing system wide, IP version specific
            traffic statistics.  This table and the ipIfStatsTable
            contain similar objects whose difference is in their
            granularity.  Where this table contains system wide traffic
            statistics, the ipIfStatsTable contains the same statistics
            but counted on a per-interface basis."
    ::= { ipTrafficStats 1 }

ipSystemStatsEntry OBJECT-TYPE
    SYNTAX     IpSystemStatsEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
           "A statistics entry containing system-wide objects for a
            particular IP version."
    INDEX { ipSystemStatsIPVersion }
    ::= { ipSystemStatsTable 1 }

IpSystemStatsEntry ::= SEQUENCE {
        ipSystemStatsIPVersion           InetVersion,
        ipSystemStatsInReceives          Counter32,
        ipSystemStatsHCInReceives        Counter64,
        ipSystemStatsInOctets            Counter32,
        ipSystemStatsHCInOctets          Counter64,
        ipSystemStatsInHdrErrors         Counter32,
        ipSystemStatsInNoRoutes          Counter32,
        ipSystemStatsInAddrErrors        Counter32,
        ipSystemStatsInUnknownProtos     Counter32,
        ipSystemStatsInTruncatedPkts     Counter32,
        ipSystemStatsInForwDatagrams     Counter32,
        ipSystemStatsHCInForwDatagrams   Counter64,
        ipSystemStatsReasmReqds          Counter32,
        ipSystemStatsReasmOKs            Counter32,
        ipSystemStatsReasmFails          Counter32,
        ipSystemStatsInDiscards          Counter32,
        ipSystemStatsInDelivers          Counter32,

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        ipSystemStatsHCInDelivers        Counter64,
        ipSystemStatsOutRequests         Counter32,
        ipSystemStatsHCOutRequests       Counter64,
        ipSystemStatsOutNoRoutes         Counter32,
        ipSystemStatsOutForwDatagrams    Counter32,
        ipSystemStatsHCOutForwDatagrams  Counter64,
        ipSystemStatsOutDiscards         Counter32,
        ipSystemStatsOutFragReqds        Counter32,
        ipSystemStatsOutFragOKs          Counter32,
        ipSystemStatsOutFragFails        Counter32,
        ipSystemStatsOutFragCreates      Counter32,
        ipSystemStatsOutTransmits        Counter32,
        ipSystemStatsHCOutTransmits      Counter64,
        ipSystemStatsOutOctets           Counter32,
        ipSystemStatsHCOutOctets         Counter64,
        ipSystemStatsInMcastPkts         Counter32,
        ipSystemStatsHCInMcastPkts       Counter64,
        ipSystemStatsInMcastOctets       Counter32,
        ipSystemStatsHCInMcastOctets     Counter64,
        ipSystemStatsOutMcastPkts        Counter32,
        ipSystemStatsHCOutMcastPkts      Counter64,
        ipSystemStatsOutMcastOctets      Counter32,
        ipSystemStatsHCOutMcastOctets    Counter64,
        ipSystemStatsInBcastPkts         Counter32,
        ipSystemStatsHCInBcastPkts       Counter64,
        ipSystemStatsOutBcastPkts        Counter32,
        ipSystemStatsHCOutBcastPkts      Counter64,
        ipSystemStatsDiscontinuityTime   TimeStamp,
        ipSystemStatsRefreshRate         Unsigned32
    }

ipSystemStatsIPVersion OBJECT-TYPE
    SYNTAX     InetVersion
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
           "The IP version of this row."
    ::= { ipSystemStatsEntry 1 }

-- This object ID is reserved to allow the IDs for this table's objects
-- to align with the objects in the ipIfStatsTable.
-- ::= { ipSystemStatsEntry 2 }

ipSystemStatsInReceives OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION

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           "The total number of input IP datagrams received, including
            those received in error.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 3 }

ipSystemStatsHCInReceives OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The total number of input IP datagrams received, including
            those received in error.  This object counts the same
            datagrams as ipSystemStatsInReceives, but allows for larger
            values.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 4 }

ipSystemStatsInOctets OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The total number of octets received in input IP datagrams,
            including those received in error.  Octets from datagrams
            counted in ipSystemStatsInReceives MUST be counted here.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 5 }

ipSystemStatsHCInOctets OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The total number of octets received in input IP datagrams,
            including those received in error.  This object counts the
            same octets as ipSystemStatsInOctets, but allows for larger

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            values.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 6 }

ipSystemStatsInHdrErrors OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of input IP datagrams discarded due to errors in
            their IP headers, including version number mismatch, other
            format errors, hop count exceeded, errors discovered in
            processing their IP options, etc.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 7 }

ipSystemStatsInNoRoutes OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of input IP datagrams discarded because no route
            could be found to transmit them to their destination.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 8 }

ipSystemStatsInAddrErrors OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of input IP datagrams discarded because the IP
            address in their IP header's destination field was not a
            valid address to be received at this entity.  This count
            includes invalid addresses (e.g., ::0).  For entities
            that are not IP routers and therefore do not forward

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            datagrams, this counter includes datagrams discarded
            because the destination address was not a local address.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 9 }

ipSystemStatsInUnknownProtos OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of locally-addressed IP datagrams received
            successfully but discarded because of an unknown or
            unsupported protocol.

            When tracking interface statistics, the counter of the
            interface to which these datagrams were addressed is
            incremented.  This interface might not be the same as the
            input interface for some of the datagrams.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 10 }

ipSystemStatsInTruncatedPkts OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of input IP datagrams discarded because the
            datagram frame didn't carry enough data.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 11 }

ipSystemStatsInForwDatagrams OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION

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           "The number of input datagrams for which this entity was not
            their final IP destination and for which this entity
            attempted to find a route to forward them to that final
            destination.  In entities that do not act as IP routers,
            this counter will include only those datagrams that were
            Source-Routed via this entity, and the Source-Route
            processing was successful.

            When tracking interface statistics, the counter of the
            incoming interface is incremented for each datagram.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 12 }

ipSystemStatsHCInForwDatagrams OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of input datagrams for which this entity was not
            their final IP destination and for which this entity
            attempted to find a route to forward them to that final
            destination.  This object counts the same packets as
            ipSystemStatsInForwDatagrams, but allows for larger values.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 13 }

ipSystemStatsReasmReqds OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of IP fragments received that needed to be
            reassembled at this interface.

            When tracking interface statistics, the counter of the
            interface to which these fragments were addressed is
            incremented.  This interface might not be the same as the
            input interface for some of the fragments.

            Discontinuities in the value of this counter can occur at

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            re-initialization of the management system, and at other
            times as indicated by the value of
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 14 }

ipSystemStatsReasmOKs OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of IP datagrams successfully reassembled.

            When tracking interface statistics, the counter of the
            interface to which these datagrams were addressed is
            incremented.  This interface might not be the same as the
            input interface for some of the datagrams.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 15 }

ipSystemStatsReasmFails OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of failures detected by the IP re-assembly
            algorithm (for whatever reason: timed out, errors, etc.).
            Note that this is not necessarily a count of discarded IP
            fragments since some algorithms (notably the algorithm in
            RFC 815) can lose track of the number of fragments by
            combining them as they are received.

            When tracking interface statistics, the counter of the
            interface to which these fragments were addressed is
            incremented.  This interface might not be the same as the
            input interface for some of the fragments.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 16 }

ipSystemStatsInDiscards OBJECT-TYPE
    SYNTAX     Counter32

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    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of input IP datagrams for which no problems were
            encountered to prevent their continued processing, but
            were discarded (e.g., for lack of buffer space).  Note that
            this counter does not include any datagrams discarded while
            awaiting re-assembly.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 17 }

ipSystemStatsInDelivers OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The total number of datagrams successfully delivered to IP
            user-protocols (including ICMP).

            When tracking interface statistics, the counter of the
            interface to which these datagrams were addressed is
            incremented.  This interface might not be the same as the
            input interface for some of the datagrams.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 18 }

ipSystemStatsHCInDelivers OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The total number of datagrams successfully delivered to IP
            user-protocols (including ICMP).  This object counts the
            same packets as ipSystemStatsInDelivers, but allows for
            larger values.

            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
            ipSystemStatsDiscontinuityTime."

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    ::= { ipSystemStatsEntry 19 }

ipSystemStatsOutRequests OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The total number of IP datagrams that local IP user-
            protocols (including ICMP) supplied to IP in requests for
            transmission.  Note that this counter does not include any
            datagrams counted in ipSystemStatsOutForwDatagrams.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 20 }

ipSystemStatsHCOutRequests OBJECT-TYPE
    SYNTAX     Counter64
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The total number of IP datagrams that local IP user-
            protocols (including ICMP) supplied to IP in requests for
            transmission.  This object counts the same packets as
            ipSystemStatsOutRequests, but allows for larger values.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 21 }

ipSystemStatsOutNoRoutes OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
           "The number of locally generated IP datagrams discarded
            because no route could be found to transmit them to their
            destination.

            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
            ipSystemStatsDiscontinuityTime."
    ::= { ipSystemStatsEntry 22 }


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