o authentication failures
Support: L1,L2,IP
Number of times a PDU has been received on this circuit with an
Authentication Information field that is incompatible with the
PDU type.
o calls failed
Support: All
Number of unsuccessful call attempts on this circuit. This
attribute is supported only if the characteristic type is x25
da.
o calls placed
Support: All
Number of call attempts (successful and unsuccessful) on this
circuit. This attribute is supported only if the characteristic
type is x25 da.
o changes in adjacency state
Support: All
Number of times the status attribute state of an adjacency
belonging to this circuit changes from Up to Down (or
Initializing), or the reverse.
o changes in ip adjacency state
Support: IP
Number of times the status attribute state of an IP adjacency
belonging to this circuit changes from Up to some other state, or
the reverse.
o changes in rip neighbor state
Support: L2,IP
Specifies the number of times the RIP state of IP adjacencies
belonging to this circuit have changed. This attribute is
supported only if the routing entity's characteristic routing
protocols supported includes the routing protocol RIP.
o circuit changes
Support: All
Number of times that the status attribute state has changed from
on to off, or vice versa.
o congestion discards
Support: L1,L2
Number of data-and error-report NPDUs that have been discarded,
before or after fragmentation, because of congestion. Any other
discarding will already have been done by the forwarding process.
This number includes all PDUs recognized by the receive process
as data PDUs (DECnet-Plus data- and error-report PDUs and Phase IV
data packets), even though they may subsequently be discarded for
some reason.
o control pdus received
Support: All
Number of control PDUs that have been received on this circuit.
This number includes all Network layer PDUs, with the exception
of DECnet-Plus data and error report PDUs and Phase IV data PDUs.
o control pdus sent
Support: All
Number of control PDUs that have been sent on this circuit.
o corrupted lsps received
Support: L1,L2
Number of times a corrupted link state packet has been received
on this circuit.
o corrupted hello pdus received
Support: All
Number of times an ES-IS (end system to intermediate system) or
IS-IS (intermediate system to intermediate system) Hello PDU has
been received on this circuit that either cannot be parsed or
contains an incorrect checksum.
o creation time
Support: All
Time this entity was created.
o da adjacency changes
Support: All
Number of DA adjacency change events that have been generated.
o data pdus forwarded
Support: L1,L2
Number of data- and error-report NPDUs that have been forwarded
onto this circuit (either from another circuit or from a local
port). This number includes all PDUs recognized by the receive
process as data PDUs (DECnet-Plus data- and error-report PDUs
and Phase IV data packets), even though they may subsequently be
discarded for some reason.
o data pdus fragmented
Support: All
Number of data NPDUs that have been fragmented on this circuit.
o data pdus received
Support: All
Number of data- and error-report NPDUs that have been received
on this circuit. This number includes all PDUs recognized by
the receive process as data PDUs (DECnet-Plus data and error
report PDUs and Phase IV data packets), even though they may
subsequently be discarded for some reason.
o data pdus transmitted
Support: All
Number of data- and error-report NPDUs, after fragmentation, that
have been delivered to the port for transmission on this circuit.
This number includes all PDUs recognized by the receive process
as data PDUs (DECnet-Plus data- and error-report PDUs and Phase IV
data packets), even though they may subsequently be discarded for
some reason.
o exceeded maximum svc adjacencies
Support: End,L2
Number of exceeded maximum svc adjacency events that have been
generated. This counter is supported only if the circuit's type
is set to x25 da; only for nodes that are end nodes; and if the
system supports dual routing (both DECnet and IP routing).
o id reachablity changes
Support: All
Number of ID reachability change events that have been generated.
o initialization failures
Support: All
Number of times that an attempt to initialize an adjacent node
over this circuit has failed, either because of version skew or
area mismatch.
o ip fragmentation failure discards
Support: IP
Number of IP packets discarded because fragmentation was required
to transmit them, but the IP header requested "do not fragment."
This attribute is supported only if the system supports dual
routing (both DECnet and IP routing).
o ip fragments created
Support: IP
Number of IP fragments created for transmission on this circuit.
o ip packets forwarded
Support: IP
Number of IP packets forwarded on this circuit before
fragmentation. These IP packets may be from another circuit or
from a local port. Note that this value includes those IP packets
counted in the ip send discards counter.
o ip packets fragmented
Support: IP
Number of IP packets that have been fragmented on this circuit.
o ip packets received
Support: IP
Number of IP packets received on this circuit. This value
includes all types of IP packet (control, data, etc.), and those
that may subsequently be discarded for any reason.
o ip received discards
Support: IP
Number of IP packets that have been received and then discarded
because of congestion.
o ip send discards
Support: IP
Number of IP packets for transmission that have been discarded
because of congestion.
o irrecoverable svc failures
Support: All
Number of times that the number of re-call attempts on this
circuit has become equal to the value of the characteristic
maximum call attempts. This attribute is supported only if the
characteristic type is set to x25 static outgoing.
o LAN l1 designated router changes
Support: L1,L2
Number of times the local node has either elected itself or
resigned as the LAN level 1 designated router on this circuit.
This attribute is supported only if the circuit's characteristic
type is set to csma-cd.
o LAN l2 designated router changes
Support: L2
Number of times the local node has either elected itself or
resigned as the LAN level 2 designated router on this circuit.
o LAN phaseiv designated router changes
Support: L1,L2
Number of times the local node has either elected itself or
resigned as the LAN Phase IV designated router on this circuit.
o redirect discards
Support: End
Number of Redirect PDUs that have been discarded because of
insufficient cache memory.
o rejected adjacencies
Support: All
Number of times an attempt to create a new adjacency using this
circuit has failed because of insufficient resources.
o rejected ip adjacencies
Support: L2,IP
Number of times an attempt to automatically create a new
IP adjacency to an IP router has failed because of lack of
resources.
o rip errors received
Support: L2,IP
Number of RIP messages received with any kind of received error
on this circuit. This attribute is supported only if the routing
entity's characteristic routing protocols supported includes the
routing protocol RIP.
o segmentation failure discards
Support: L1,L2
Number of data NPDUs that have been discarded because
segmentation was required to send them on this circuit but was
not permitted in the NPDU header.
o verification reject events
Number of verification reject events that have been generated.
This attribute is supported only if the characteristic type is
set to ddcmp, hdlc, x25 static incoming, x25 static outgoing, or
x25 permanent.