Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2004-04-16
2010-11-23
Shah, Chirag G (Department: 2477)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S432000
Reexamination Certificate
active
07839843
ABSTRACT:
A virtual network device sub-unit includes an interface to a virtual network device link and a distributed forwarding module. The interface receives a packet, and the distributed forwarding module forwards the packet received by the interface. The distributed forwarding module performs an ingress lookup if the packet includes a multicast destination address and an egress lookup if the packet includes a unicast destination address. If the packet includes a multicast destination address, the distributed forwarding module replicates the packet for each of several outgoing VLANs associated with the multicast destination address. If an additional multicast packet is received via an interface that is not coupled to a virtual network device link, the distributed forwarding module sends at most one copy of the additional multicast packet via the virtual network device link.
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Bhide Shreeram
Dontu Sitaram
Golshan Ali
Mushtaq Faisal
Smith Michael R.
Campbell Stephenson LLP
Cisco Technology Inc.
Reddivalam Srinivasa R
Shah Chirag G
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