Appeal No. 1997-1194
Application No. 08/084,668
router. Router processing circuitry within the router
searches a routing table for a routing table entry for a
detected destination for the data packets. More particularly,
Appellant asserts at pages 4 through 6 of the specification
that, by associating a cost with each entry in a router table,
virtual circuit connections can be utilized as back-up
connections for a primary network.
Claim 1 is illustrative of the invention and reads as
follows:
1. A router comprising:
router processing circuitry for routing data
transferred between local areal networks;
a routing table, accessed by the processing circuitry,
the routing table including
a plurality of routing table entries, each routing
table entry including an address for a next hop
router, and
a reference to a cost value for a route represented
by the table entry; and,
a virtual connection map table accessed by the routing
processing circuitry, the virtual connection map table
having a plurality of virtual connection map table entries,
each virtual connection map table entry having a phone
number for a next hop router;
wherein for each virtual connection, a routing table
entry includes a reference to a virtual connection map table
2
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