User Manual

Routing
328
M6100, M5300, and M7100 Series Managed Switches
The following table describes the nonconfigurable information displayed on the screen.
Table 124. IP Basic Statistics
Field Description
IpInReceives The total number of input datagrams received from interfaces, including
those received in error.
IpInHdrErrors 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, and so on.
IpInAddrErrors 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 entity. This count includes invalid addresses (for
example, 0.0.0.0) and addresses of unsupported classes (Class E). For
entities that are not IP gateways and therefore do not forward
datagrams, this counter includes datagrams discarded because the
destination address was not a local address.
IpForwDatagrams The number of input datagrams for which this entity 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 that do not act as IP
gateways, this counter includes only those packets that were
source-routed through this entity, and the source-route option
processing was successful.
IpInUnknownProtos The number of locally addressed datagrams received successfully but
discarded because of an unknown or unsupported protocol.
IpInDiscards The number of input IP datagrams for which no problems were
encountered to prevent their continued processing, but that were
discarded (for lack of buffer space). This counter does not include any
datagrams discarded while awaiting re-assembly.
IpInDelivers The total number of input datagrams successfully delivered to IP user
protocols (including ICMP).
IpOutRequests The total number of IP datagrams that local IP user protocols (including
ICMP) supplied to IP in requests for transmission. This counter does
not include any datagrams counted in ipForwDatagrams.
IpOutDiscards The number of output IP datagrams for which no problem was
encountered to prevent their transmission to their destination, but that
were discarded for reasons such as lack of buffer space. This counter
would include datagrams counted in ipForwDatagrams if any such
packets met this (discretionary) discard criterion.
IpOutNoRoutes The number of IP datagrams discarded because no route could be
found to transmit them to their destination. 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.
IpReasmTimeout The maximum number of seconds for which received fragments are
held while they are awaiting reassembly at this entity.