Appeal No. 96-3047
Application 08/053,191
the spooler have been transmitted, subsequent transmission of
packets takes place directly between the mobile unit and the
new base station, see steps A through E, column 9 of Harrison.
Appellants do acknowledge this much, [brief, pages 8 to 9].
Appellants have not argued the combination with any
specificity. We find that Benjamin does indeed show the
concept of creating virtual routers without changing the
network ID of the logic units within a network configuration.
For example, gateway 10 in figures 1 and 2 enables the
communication from logical unit (LU) 18 in network A to LU 22
in network B, by creating a virtual router which is programmed
to create a translations table. Aliases are used and no
change in the ID of LU 18 and LU 22 is done in respective
networks. The crux of the alias naming is that each network
uses an alias name to identify resources in another network.
By using alias names the same name can be used to identify LUs
in separately controlled networks. When these networks are
connected via the gateway, a unique alias name is used in the
address space of each of the attached networks, and gateway
makes the proper name translation during the establishment of
a session between the two LU's [column 10, lines 37 to 48].
-9-
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