8 • IP
6511RC Matrix Switch Administrators’ Reference Guide
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IP parameters and statistics
Total Datagrams Received
The total number of input datagrams received from interfaces, including those received in error.
Discarded for Header Errors
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.
Discarded for Address Errors
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 the 6511RC. 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.
Forwarded Datagrams
The number of input datagrams for which the 6511RC 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 the 6511RC, and the
source-route option processing was successful.
Discarded for Unknown Protos
The number of locally-addressed datagrams received successfully but discarded because of an unknown or
unsupported protocol.
Discarded with No Errors
The number of input IP datagrams for which no problems were encountered to prevent their continued pro-
cessing, but which were discarded (for example, due to lack of buffer space).
Note
The Discarded w/No Errors counter does not include any datagrams dis-
carded while awaiting re-assembly.
Total Deliveries
The total number of input datagrams successfully delivered to IP user-protocols (including ICMP).
Out Requests
The total number of IP datagrams which local IP user-protocols (including ICMP) supplied to IP in requests
for transmission.
Note
The Out Requests counter does not include any datagrams counted in
ipForwDatagrams.
Out 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).
Summary of Contents for 6511RC
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