ZyXEL Communications NetAtlas IES-1000 User Manual page 116

NetAtlas IES-1000 (AAM1008) EMS User's Guide
FIELD
ForwDatagrams This is the number of input datagrams for which this device 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 device, and the Source- Route option processing
was successful.
OutRequests This is 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.
HdrErrors This is 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.
AddrErrors This is 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 device. 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 Gateways and therefore do not forward datagrams, this counter
includes datagrams discarded because the destination address was not a local address.
UnknownProtos This is the number of locally addressed datagrams received successfully but discarded
because of an unknown or unsupported protocol.
Discards This is 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 reassembly.
OutDiscards This is 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.
OutNoRoutes This is 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 that meet this `no-route' criterion. This includes any datagrams that a host
cannot route because all of its default gateways are down.
ReasmReqds This is the number of IP fragments received that needed to be reassembled at this device.
ReasmOKs This is the number of IP datagrams successfully reassembled.
ReasmFails This is 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 the algorithm in RFC 815) can lose track of the number of
fragments by combining them as they are received.
FragOKs This is the number of IP datagrams that have been successfully fragmented at this device.
FragFails This is the number of IP datagrams that have been discarded because they needed to be
fragmented at this device but could not be, e.g., because their "Don't Fragment" flag was set.
FragCreates This is the number of IP datagram fragments that have been generated as a result of
fragmentation at this device.
For information on editing a table entry, please see Section 5.1.1.
9-2
Table 9-1 IP Statistics
DESCRIPTION
The Performance Protocol Menus