Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-02-06
2009-12-15
Arani, Taghi T. (Department: 2416)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S395530, C370S352000, C370S392000, C370S351000, C370S429000, C709S221000
Reexamination Certificate
active
07633956
ABSTRACT:
A network device has a network interface to allow the device to send and receive traffic across a network. The device also has a cable connection to allow the device to exchange data with at least one cable modem and a processor to associate a cable interface and cable service identifier with a cable modem; receive a packet from the cable modem; and insert a layer 2 network identifier, the identifier comprising two service provider VLAN (SP-VLAN) tags, into the packet. The processor in the network device identifies a virtual trunk interface based on the outer SP-VLAN tag and identifies the virtual private network based on the inner SP-VLAN tag.
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Dhar Sanjay
Parandekar Harshavardhan
Sajassi Ali
Arani Taghi T.
Beyen Zewdu
Cisco Technology Inc.
Stolowitz Ford Cowger LLP
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