Reference Guide

N8406-022A 1Gb Intelligent L2 Switch Browser-based Interface Reference Guide 43
Table 29 IF statistics
Statistics
Description
ifOutErrors
For packet-oriented interfaces, the number of outbound packets that could not be transmitted
because of errors.
For character-oriented or fixed-length interfaces, the number of outbound transmission units that
could not be transmitted because of errors.
ifOutDiscards
The number of outbound packets, which were chosen to be discarded even though no errors had
been detected to prevent their being transmitted. One possible reason for discarding such a
packet could be to free up buffer space.
IP statistics are described in the following table:
Table 30 IP Statistics
Statistic
Description
ipInReceives
The total number of input datagrams received from interfaces, including those received in
error.
ipInDiscards
The number of input IP datagrams for which no problems were encountered to prevent their
continued processing, but which were discarded (for example, for lack of buffer space). Note
that 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).
ipDefaultTTL
The default value inserted into the Time-To-Live (TTL) field of the IP header of
datagrams originated at this entity (the switch), whenever a TTL value is not supplied by the
transport layer protocol.
ipInUnknownProtos
The number of locally addressed datagrams received successfully but discarded because of
an unknown or unsupported protocol.
ipOutRequests
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.
ipOutDiscards
The number of output IP datagrams for which no problem was encountered to prevent their
transmission to their destination, but which were discarded (for example, for lack of buffer
space). Note that this counter would include datagrams counted in ipForwDatagrams if
any such packets met this (discretionary) discard criterion.
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 forth.
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 (the switch). This count
includes invalid addresses (for example, 0.0.0.0) and addresses of unsupported Classes (for
example, 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.