| ipForwarding | 
      .1.3.6.1.2.1.4.1 | 
    
    
      | 
        The indication of whether this entity is acting as an IP
        router in respect to the forwarding of datagrams received
        by, but not addressed to, this entity.  IP routers forward
        datagrams.  IP hosts do not (except those source-routed via
        the host).
       | 
    
    
      | ipDefaultTTL | 
      .1.3.6.1.2.1.4.2 | 
    
    
      | 
        The default value inserted into the Time-To-Live field of
        the IP header of datagrams originated at this entity,
        whenever a TTL value is not supplied by the transport layer
        protocol.
       | 
    
    
      | ipInReceives | 
      .1.3.6.1.2.1.4.3 | 
    
    
      | 
        The total number of input datagrams received from
        interfaces, including those received in error.
       | 
    
    
      | ipInHdrErrors | 
      .1.3.6.1.2.1.4.4 | 
    
    
      | 
        The number of input datagrams discarded due to errors in
        their IP headers, including bad checksums, version number
        mismatch, other format errors, time-to-live exceeded, errors
        discovered in processing their IP options, etc.
       | 
    
    
      | ipInAddrErrors | 
      .1.3.6.1.2.1.4.5 | 
    
    
      | 
        The number of input 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., 0.0.0.0) and addresses of
        unsupported Classes (e.g., Class E).  For entities which are
        not IP routers and therefore do not forward datagrams, this
        counter includes datagrams discarded because the destination
        address was not a local address.
       | 
    
    
      | ipForwDatagrams | 
      .1.3.6.1.2.1.4.6 | 
    
    
      | 
        The number of input datagrams for which this entity was not
        their final IP destination, as a result of which an attempt
        was made to find a route to forward them to that final
        destination.  In entities which do not act as IP routers,
        this counter will include only those packets which were
        Source-Routed via this entity, and the Source-Route option
        processing was successful.
       | 
    
    
      | ipInUnknownProtos | 
      .1.3.6.1.2.1.4.7 | 
    
    
      | 
        The number of locally-addressed datagrams received
        successfully but discarded because of an unknown or
        unsupported protocol.
       | 
    
    
      | ipInDiscards | 
      .1.3.6.1.2.1.4.8 | 
    
    
      | 
        The number of input IP datagrams for which no problems were
        encountered to prevent their continued processing, but which
        were discarded (e.g., for lack of buffer space).  Note that
        this counter does not include any datagrams discarded while
        awaiting re-assembly.
       | 
    
    
      | ipInDelivers | 
      .1.3.6.1.2.1.4.9 | 
    
    
      | 
        The total number of input datagrams successfully delivered
        to IP user-protocols (including ICMP).
       | 
    
    
      | ipOutRequests | 
      .1.3.6.1.2.1.4.10 | 
    
    
      | 
        The total number of IP datagrams which local IP user-
        protocols (including ICMP) supplied to IP in requests for
        transmission.  Note that this counter does not include any
        datagrams counted in ipForwDatagrams.
       | 
    
    
      | ipOutDiscards | 
      .1.3.6.1.2.1.4.11 | 
    
    
      | 
        The number of output IP datagrams for which no problem was
        encountered to prevent their transmission to their
        destination, but which were discarded (e.g., for lack of
        buffer space).  Note that this counter would include
        datagrams counted in ipForwDatagrams if any such packets met
        this (discretionary) discard criterion.
       | 
    
    
      | ipOutNoRoutes | 
      .1.3.6.1.2.1.4.12 | 
    
    
      | 
        The number of IP datagrams discarded because no route could
        be found to transmit them to their destination.  Note that
        this counter includes any packets counted in ipForwDatagrams
        which meet this `no-route' criterion.  Note that this
        includes any datagrams which a host cannot route because all
        of its default routers are down.
       | 
    
    
      | ipReasmTimeout | 
      .1.3.6.1.2.1.4.13 | 
    
    
      | 
        The maximum number of seconds which received fragments are
        held while they are awaiting reassembly at this entity.
       | 
    
    
      | ipReasmReqds | 
      .1.3.6.1.2.1.4.14 | 
    
    
      | 
        The number of IP fragments received which needed to be
        reassembled at this entity.
       | 
    
    
      | ipReasmOKs | 
      .1.3.6.1.2.1.4.15 | 
    
    
      | 
        The number of IP datagrams successfully re-assembled.
       | 
    
    
      | ipReasmFails | 
      .1.3.6.1.2.1.4.16 | 
    
    
      | 
        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.
       | 
    
    
      | ipFragOKs | 
      .1.3.6.1.2.1.4.17 | 
    
    
      | 
        The number of IP datagrams that have been successfully
        fragmented at this entity.
       | 
    
    
      | ipFragFails | 
      .1.3.6.1.2.1.4.18 | 
    
    
      | 
        The number of IP datagrams that have been discarded because
        they needed to be fragmented at this entity but could not
        be, e.g., because their Don't Fragment flag was set.
       | 
    
    
      | ipFragCreates | 
      .1.3.6.1.2.1.4.19 | 
    
    
      | 
        The number of IP datagram fragments that have been
        generated as a result of fragmentation at this entity.
       | 
    
    
      | ipAddrEntry | 
      .1.3.6.1.2.1.4.20.1 | 
    
    
      | 
        The addressing information for one of this entity's IP
        addresses.
       | 
    
    
      | ipNetToMediaEntry | 
      .1.3.6.1.2.1.4.22.1 | 
    
    
      | 
        Each entry contains one IpAddress to `physical' address
        equivalence.
       | 
    
    
      | ipRoutingDiscards | 
      .1.3.6.1.2.1.4.23 | 
    
    
      | 
        The number of routing entries which were chosen to be
        discarded even though they are valid.  One possible reason
        for discarding such an entry could be to free-up buffer
        space for other routing entries.
       | 
    
    
      | icmpInMsgs | 
      .1.3.6.1.2.1.5.1 | 
    
    
      | 
        The total number of ICMP messages which the entity
        received.  Note that this counter includes all those counted
        by icmpInErrors.
       | 
    
    
      | icmpInErrors | 
      .1.3.6.1.2.1.5.2 | 
    
    
      | 
        The number of ICMP messages which the entity received but
        determined as having ICMP-specific errors (bad ICMP
        checksums, bad length, etc.).
       | 
    
    
      | icmpInDestUnreachs | 
      .1.3.6.1.2.1.5.3 | 
    
    
      | 
        The number of ICMP Destination Unreachable messages
        received.
       | 
    
    
      | icmpInTimeExcds | 
      .1.3.6.1.2.1.5.4 | 
    
    
      | 
        The number of ICMP Time Exceeded messages received.
       | 
    
    
      | icmpInParmProbs | 
      .1.3.6.1.2.1.5.5 | 
    
    
      | 
        The number of ICMP Parameter Problem messages received.
       | 
    
    
      | icmpInSrcQuenchs | 
      .1.3.6.1.2.1.5.6 | 
    
    
      | 
        The number of ICMP Source Quench messages received.
       | 
    
    
      | icmpInRedirects | 
      .1.3.6.1.2.1.5.7 | 
    
    
      | 
        The number of ICMP Redirect messages received.
       | 
    
    
      | icmpInEchos | 
      .1.3.6.1.2.1.5.8 | 
    
    
      | 
        The number of ICMP Echo (request) messages received.
       | 
    
    
      | icmpInEchoReps | 
      .1.3.6.1.2.1.5.9 | 
    
    
      | 
        The number of ICMP Echo Reply messages received.
       | 
    
    
      | icmpInTimestamps | 
      .1.3.6.1.2.1.5.10 | 
    
    
      | 
        The number of ICMP Timestamp (request) messages received.
       | 
    
    
      | icmpInTimestampReps | 
      .1.3.6.1.2.1.5.11 | 
    
    
      | 
        The number of ICMP Timestamp Reply messages received.
       | 
    
    
      | icmpInAddrMasks | 
      .1.3.6.1.2.1.5.12 | 
    
    
      | 
        The number of ICMP Address Mask Request messages received.
       | 
    
    
      | icmpInAddrMaskReps | 
      .1.3.6.1.2.1.5.13 | 
    
    
      | 
        The number of ICMP Address Mask Reply messages received.
       | 
    
    
      | icmpOutMsgs | 
      .1.3.6.1.2.1.5.14 | 
    
    
      | 
        The total number of ICMP messages which this entity
        attempted to send.  Note that this counter includes all
        those counted by icmpOutErrors.
       | 
    
    
      | icmpOutErrors | 
      .1.3.6.1.2.1.5.15 | 
    
    
      | 
        The number of ICMP messages which this entity did not send
        due to problems discovered within ICMP such as a lack of
        buffers.  This value should not include errors discovered
        outside the ICMP layer such as the inability of IP to route
        the resultant datagram.  In some implementations there may
        be no types of error which contribute to this counter's
        value.
       | 
    
    
      | icmpOutDestUnreachs | 
      .1.3.6.1.2.1.5.16 | 
    
    
      | 
        The number of ICMP Destination Unreachable messages sent.
       | 
    
    
      | icmpOutTimeExcds | 
      .1.3.6.1.2.1.5.17 | 
    
    
      | 
        The number of ICMP Time Exceeded messages sent.
       | 
    
    
      | icmpOutParmProbs | 
      .1.3.6.1.2.1.5.18 | 
    
    
      | 
        The number of ICMP Parameter Problem messages sent.
       | 
    
    
      | icmpOutSrcQuenchs | 
      .1.3.6.1.2.1.5.19 | 
    
    
      | 
        The number of ICMP Source Quench messages sent.
       | 
    
    
      | icmpOutRedirects | 
      .1.3.6.1.2.1.5.20 | 
    
    
      | 
        The number of ICMP Redirect messages sent.  For a host,
        this object will always be zero, since hosts do not send
        redirects.
       | 
    
    
      | icmpOutEchos | 
      .1.3.6.1.2.1.5.21 | 
    
    
      | 
        The number of ICMP Echo (request) messages sent.
       | 
    
    
      | icmpOutEchoReps | 
      .1.3.6.1.2.1.5.22 | 
    
    
      | 
        The number of ICMP Echo Reply messages sent.
       | 
    
    
      | icmpOutTimestamps | 
      .1.3.6.1.2.1.5.23 | 
    
    
      | 
        The number of ICMP Timestamp (request) messages sent.
       | 
    
    
      | icmpOutTimestampReps | 
      .1.3.6.1.2.1.5.24 | 
    
    
      | 
        The number of ICMP Timestamp Reply messages sent.
       | 
    
    
      | icmpOutAddrMasks | 
      .1.3.6.1.2.1.5.25 | 
    
    
      | 
        The number of ICMP Address Mask Request messages sent.
       | 
    
    
      | icmpOutAddrMaskReps | 
      .1.3.6.1.2.1.5.26 | 
    
    
      | 
        The number of ICMP Address Mask Reply messages sent.
       | 
    
  
  
    
      | ipAdEntAddr | 
      .1.3.6.1.2.1.4.20.1.1 | 
    
    
      | 
        The IP address to which this entry's addressing information
        pertains.
       | 
    
    
      | ipAdEntIfIndex | 
      .1.3.6.1.2.1.4.20.1.2 | 
    
    
      | 
        The index value which 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 RFC 1573's ifIndex.
       | 
    
    
      | ipAdEntNetMask | 
      .1.3.6.1.2.1.4.20.1.3 | 
    
    
      | 
        The subnet mask associated with the IP address of this
        entry.  The value of the mask is an IP address with all the
        network bits set to 1 and all the hosts bits set to 0.
       | 
    
    
      | ipAdEntBcastAddr | 
      .1.3.6.1.2.1.4.20.1.4 | 
    
    
      | 
        The value of the least-significant bit in the IP broadcast
        address used for sending datagrams on the (logical)
        interface associated with the IP address of this entry.  For
        example, when the Internet standard all-ones broadcast
        address is used, the value will be 1.  This value applies to
        both the subnet and network broadcasts addresses used by the
        entity on this (logical) interface.
       | 
    
    
      | ipAdEntReasmMaxSize | 
      .1.3.6.1.2.1.4.20.1.5 | 
    
    
      | 
        The size of the largest IP datagram which this entity can
        re-assemble from incoming IP fragmented datagrams received
        on this interface.
       | 
    
    
      | ipNetToMediaIfIndex | 
      .1.3.6.1.2.1.4.22.1.1 | 
    
    
      | 
        The interface on which this entry's equivalence is
        effective.  The interface identified by a particular value
        of this index is the same interface as identified by the
        same value of RFC 1573's ifIndex.
       | 
    
    
      | ipNetToMediaNetAddress | 
      .1.3.6.1.2.1.4.22.1.3 | 
    
    
      | 
        The IpAddress corresponding to the media-dependent
        `physical' address.
       | 
    
    
      | ipNetToMediaPhysAddress | 
      .1.3.6.1.2.1.4.22.1.2 | 
    
    
      | 
        The media-dependent `physical' address.
       | 
    
    
      | ipNetToMediaType | 
      .1.3.6.1.2.1.4.22.1.4 | 
    
    
      | 
        The type of mapping.
        Setting this object to the value invalid(2) has the effect
        of invalidating the corresponding entry in the
        ipNetToMediaTable.  That is, it effectively disassociates
        the interface identified with said entry from the mapping
        identified with said entry.  It is an implementation-
        specific matter as to whether the agent removes an
        invalidated entry from the table.  Accordingly, management
        stations must be prepared to receive tabular information
        from agents that corresponds to entries not currently in
        use.  Proper interpretation of such entries requires
        examination of the relevant ipNetToMediaType object.
       |