Appeal No. 2004-0852
Application No. 09/354,651 Page 5
its IP address together with the same session identifier in order
to initiate such session.” Appellants further assert (id.) that
in Rekhter, packets of data are transported between end points by
means of tags, because when a PE router receives a packet from a
CE router, the PE router tags the packet with an indication of
the CE network where it originated. The PE router then bases its
determination of what router to forward the packet to not only on
the packet's destination address, but also on the identity of the
originating CE router. At each subsequent hop, the router looks
up the packet destination address in the forwarding table
specific to the CE network that the tag designates. In other
words, a packet is routed on a hop-by-hop basis based on tags
attached to the data packet and information stored in the router
look-up table.
Appellants (brief, page 6) dispute the examiner's position
(answer, page 6) that Rekhter “discloses the setting up of a TCP
communication between an originating end point and a destination
end point utilizing IP address and a session ID, wherein the
destination returns its IP address and the session ID associated
with the communication.” Appellants maintain (id.) that:
The session to which the Examiner refers is
that taught by Rekhter in which the service
provider’s routers utilize the tag distribution
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007