
308631-14.00 Rev 00
B-1
Appendix B
Configuring IP Accounting on
a Frame Relay Interface
IP accounting is a mechanism for counting transit data packets -- that is, packets
that IP receives on one interface and forwards out another interface. This
mechanism allows a network service provider to bill a network user according to
the amount of data that it routes between two locations.
Nortel Networks provides IP accounting support for synchronous interfaces
configured with frame relay in group access mode (the default mode). IP
accounting counts all data packets that the router receives on any IP interface and
forwards out an IP/frame relay interface.
IP accounting keeps track of transit data packets by making an entry for each
packet in an IP accounting table. Each entry includes the following fields: the
source address of the packet, the destination address of the packet, the number of
packets forwarded, and the number of bytes forwarded.
Caution:
If the frame relay interface becomes overrun and the driver drops
packets, these packets will still be counted by IP accounting.
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