Section 4, User Interface Guide ATLAS 550 System Manual
228 © 2002 ADTRAN, Inc. 61200305L1-1F
FORWDATAGRAMS The number of input datagrams for which this ATLAS 550 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 Gateways, this
counter will include only those packets which were Source-Routed via this ATLAS
550, and the Source-Route option processing was successful.
INUNKNOWNPROTOS The number of locally-addressed datagrams received successfully but discarded
because of an unknown or unsupported protocol.
INDISCARDS 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.
INDELIVERS The total number of input datagrams successfully delivered to IP user-protocols
(including ICMP).
OUTREQUESTS 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 FORWDATAGRAMS.
OUTDISCARDS 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
FORWDATAGRAMS if any such packets met this (discretionary) discard criterion.
OUTNOROUTES 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
FORWDATAGRAMS which meet this “no-route” criterion. Note also that this includes
any datagrams which a host cannot route because all of its default gateways are
down.
REASMTIMEOUT The maximum number of seconds which received fragments are held while they
are awaiting reassembly at this ATLAS 550.
REASMREQDS The number of IP fragments received which needed to be reassembled at this
ATLAS 550.
REASMOKSThe number of IP datagrams successfully reassembled.
REASMFAILS The number of failures detected by the IP reassembly algorithm (for whatever
reason: timed out, errors, etc.). Note that this is not necessarily a count of discarded
IP fragments since some algorithms (notably RFC 815s) can lose track of the
number of fragments by combining them as they are received.
FRAGOKSThe number of IP datagrams that have been successfully fragmented at this
ATLAS 550.
FRAGFAILS The number of IP datagrams that have been discarded because they needed to be
fragmented at this ATLAS 550 but could not be, e.g., because their “Don't
Fragment” flag was set.
Table 6. IP Statistics (Continued)
Name Description