/sys$common/syshlp/NCLHELP.HLB  —  Event Messages, routing
 o  address unreachable pdu discard

    Support: All

    Generated when a data PDU is discarded because the destination
    address is unreachable.

    Arguments:

    discard     Reason why the PDU was discarded.
    reason
                destination     The destination address is unknown.
                address unknown

                destination     The destination address is
                address         currently unreachable.
                unreachable

                duplicate       An optional PDU field occurs twice.
                option

                header syntax   There is a format error in the PDU
                error           header.

                incomplete      The received data did not contain a
                pdu             complete PDU.
                received

                incorrect       The checksum is incorrect.
                checksum

                lifetime        The PDU's lifetime expired while it was
                expired         being reassembled.
                during
                reassembly

                lifetime        The PDU's lifetime expired while it was
                expired         in transit.
                while data
                unit in
                transit

                pdu             No buffers were available to forward the
                discarded       packet.
                due to
                congestion

                protocol        Unable to translate a DECnet-Plus format
                procedure       PDU into a Phase IV format PDU.
                error

                reason not      No further information available.
                specified

                reassembly      Insufficient memory available to
                interference    reassemble a PDU.

                segmentation    The PDU requires fragmentation, but the
                required, but   originator did not permit this.
                not permitted

                unsupported     The PDU contained an unrecognized and
                option not      unsupported PDU option.
                specified

                unsupported     The PDU version is not supported.
                protocol
                version

                unsupported     The sender requested an unsupported form
                recording of    of route recording.
                route option

                unsupported     The sender requested an unsupported form
                source          of source routing.
                routing
                option

                phase iv        Phase IV destination address of the
                forwarding      Phase IV data packet.
                address

                phase iv        Phase IV source address of the Phase IV
                source          data packet.
                address

                forwarding      Destination NSAP address.
                address

                receiving       Name of the adjacency on which the PDU
                adjacency       was received.  For an end node, only the
                                circuit may be specified.

                source          Source NSAP address of the data NPDU.
                address

 o  aged ip packet discard

    Support: IP

    Generated when an IP packet is discarded because the interval
    specified in its time to live field has expired.

 o  aged pdu discard

    Support: L1,L2

    Generated when a data PDU is discarded because its lifetime has
    expired.

    Arguments:

    discard     Reason why the PDU was discarded. See possible
    reason      reasons described under the discard reason argument
                of the address unreachable pdu discard event. (Not
                all of these argument values can be generated by this
                event.)

    phase iv    Phase IV header of the Phase IV packet causing this
    pdu header  event.

    pdu header  Contents of the header of the data PDU that was
                discarded.

 o  attempt to exceed maximum sequence number

    Support: L1,L2

    Generated when an attempt is made to increase the sequence
    number of a link-state packet beyond the maximum allowed sequence
    number.

 o  corrupted lsp detected

    Support: L1,L2

    Generated when a corrupted link-state packet is detected in
    memory.

 o  egp message discard

    Support: All

    Generated when EGP Message is discarded.

 o  ip address unreachable packet discard

    Support: IP

    Generated when an IP packet is discarded because its destination
    is unreachable.

    Arguments:

    forwarding  IP address on which the forwarding decision for the
    IP address  IP packet was taken. This is usually the destination
                IP address.

    icmp        Value of the code field of the corresponding ICMP
    discard     destination unreachable message.
    reason
                host unreachable
                network unreachable
                source route failed

    LAN         Data link address of the broadcast circuit that
    address     is the previous hop for the packet. This argument
                is present only if the receiving entity argument
                identifies a broadcast circuit entity.

    receiving   Local name of the circuit entity corresponding to the
    entity      previous hop for the packet.

    source ip   Source IP address of the IP packet.
    address

 o  ip destination address packet error discard

    Support: IP

    Generated when an IP packet is discarded because the destination
    IP address is invalid (that is, it has an invalid format, or it
    refers to an unsupported network class).

    Arguments:

    destination Destination IP address in the IP packet.
    ip address

    LAN         Data link address of the broadcast circuit that
    address     is the previous hop for the packet. This argument
                is present only if the receiving entity argument
                identifies a broadcast circuit entity.

    receiving   Local name of the circuit entity corresponding to the
    entity      previous hop for the packet.

    source ip   Source IP address of the IP packet.
    address

 o  ip packet discard

    Support: IP

    Generated when an IP packet is discarded because of version
    number mismatch or bad checksum.

    Arguments:

    ip discard  Reason why the IP packet was discarded. See the ip
    reason      discard reason argument of the IP Packet Format Error
                event.

    ip header   IP header of the PDU that caused the event.
    receiving   Local name of the circuit entity corresponding to the
    entity      previous hop for the packet.

 o  ip packet format error

    Support: IP

    Generated when an IP packet is discarded because it contains a
    format error.

    Arguments:

    ip discard  Reason why the IP packet was discarded.
    reason
                duplicate option
                header syntax error
                incomplete packet received
                incorrect checksum
                incorrect header length
                incorrect total length
                option error
                protocol procedure error
                reason not specified
                received via broadcast
                unsupported option not specified
                unsupported protocol version
                unsupported security option

    ip header   IP header of the PDU that caused the event.
    LAN         Data link address of the broadcast circuit that
    address     is the previous hop for the packet. This argument
                is present only if the receiving entity argument
                identifies a broadcast circuit entity.

    pointer     Offset of the octet in the IP header that caused the
                format error.

    receiving   Local name of the circuit entity corresponding to the
    entity      previous hop for the packet.

 o  ip protocol unreachable packet discard

    Support: IP

    Generated when an IP packet is discarded because there was no
    port on the local system for the protocol type specified in the
    IP header.

    Arguments:

    destination Value of the protocol field in the IP packet.
    protocol

    icmp        Value of the code field of the corresponding ICMP
    discard     destination unreachable message.
    reason
                Port Unreachable
                Protocol Unreachable

    LAN         Data link address of the broadcast circuit that
    address     is the previous hop for the packet. This argument
                is present only if the Receiving Entity argument
                identifies a broadcast circuit entity.

    receiving   Local name of the circuit entity corresponding to the
    entity      previous hop for the packet.

    source ip   Source IP address of the IP packet.
    address

 o  ip source address packet error discard

    Support: IP

    Generated when an IP packet is discarded because the source IP
    address is invalid (that is, it has an invalid format, or it
    refers to an unsupported network class).

    Arguments:

    destination Destination IP address in the IP packet.
    ip address

    LAN         Data link address of the broadcast circuit that
    address     is the previous hop for the packet. This argument
                is present only if the Receiving Entity argument
                identifies a broadcast circuit entity.

    receiving   Local name of the circuit entity corresponding to the
    entity      previous hop for the packet.

    source ip   Source IP address of the IP packet.
    address

 o  lsp L1 database overload

    Support: L1,L2

    Generated when the status attribute L1 state changes from on to
    waiting, or vice versa.

    Arguments:

    source id   Source ID of the link-state packet.

    state       Current state.
    change
                recovered    Router operating normally.

                waiting      Router has failed to store a link-state
                             packet, and is operating in restricted
                             mode.

 o  lsp L2 database overload

    Support: L2

    Generated when the status attribute L2 state changes from on to
    waiting, or vice versa.

    Arguments:

    source id   Source ID of the link-state packet.

    state       Current state.
    change
                recovered    Router is operating normally.

                waiting      Router has failed to store a link-state
                             packet, and is operating in restricted
                             mode.

 o  manual address dropped from area

    Support: L1,L2

    Generated when one of the addresses in the manual area addresses
    set is ignored when computing an area address. The event is
    generated once for each address that is dropped.

    Argument:

    area        Area address that caused the maximum number of area
    address     addresses to be exceeded.

 o  own lsp purged

    Support: L1,L2

    Generated when a zero-aged copy of a node's own link-state packet
    is received from some other node. This represents an invalid
    attempt to purge the local node's link-state packet.

 o  pdu format error

    Support: All

    Generated when a data PDU is discarded because of a format error.

    Arguments:

    discard     Reason why the PDU was in error. See possible reasons
    reason      described under the discard reason argument of the
                address unreachable pdu discard event. (Not all of
                these argument values are generated by this event.)

    phase iv    Phase IV header of the Phase IV packet causing this
    pdu header  event.

    pdu header  Contents of the header of the data PDU that was
                discarded.

    receiving   Name of the adjacency on which the PDU was received.
    adjacency   For an end node on a LAN, only the circuit may be
                specified for Tru64 UNIX.

 o  phaseiv translation failure

    Support: All

    Generated when a PDU is discarded because it cannot be translated
    to Phase IV format.

    Arguments:

    receiving   Local entity name of the adjacency upon which the
    adjacency   PDU was received. For an end node on a LAN, only the
                circuit may be specified for Tru64 UNIX.

    pdu header  Data PDU header causing the event.

 o  sequence number skipped

    Support: L1,L2

    Generated when the sequence number of a link-state packet is
    incremented by more than 1. This usually occurs when a router is
    reenabled while its previous link-state packets are still stored
    in the network.

 o  unsupported option

    Generated when a data packet is received that contains an
    unsupported option in its header.

    Arguments:

    discard     Reason why the event was generated. See possible
    reason      reasons described under the discard reason argument
                of the address unreachable pdu discard event. (Not
                all of these argument values are generated by this
                event.)

    pdu header  Contents of the header of the data PDU that caused
                the event.

    receiving   Name of the adjacency on which the PDU was received.
    adjacency   For an end node on a LAN, only the circuit may be
                specified.
Additional Information: explode extract

circuit
egp_group
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