Specifications

Total Access 600 Series System Manual Section 4.2 T1 TDM UIG
61200624L1-1A © 2002 ADTRAN, Inc. 119
ERRORFREE DISCARDS
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
TOTAL FORWARDED DATAGRAMS if any such packets
met this (discretionary) discard criterion.
ROUTELESS DISCARDS
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
TOTAL FORWARDED DATAGRAMS
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.
IP REASSEMBLY TIMEOUT
The maximum number of seconds which received fragments are held while they are awaiting
reassembly at this unit.
DISASSEMBLED FRAGMENTS
The number of IP fragments received which needed to be reassembled at this unit.
IP DATAGRAMS REASSEMBLED
The number of IP datagrams successfully reassembled.
IP REASSEMBLY FAILURES
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.
SUCCESSFUL FRAGMENTS
The number of IP datagrams that have been successfully fragmented at this unit.
FAILED FRAGMENTS
The number of IP datagrams that have been discarded because they needed to be fragmented at this
unit but could not be, e.g., because their “Don't Fragment” flag was set.
TOTAL IP FRAGMENTS
The number of IP datagram fragments that have been generated as a result of fragmentation at this
unit.