Multiplex communications – Pathfinding or routing
Reexamination Certificate
2005-12-01
2010-02-09
Ahmed, Salman (Department: 2476)
Multiplex communications
Pathfinding or routing
C370S230000
Reexamination Certificate
active
07660291
ABSTRACT:
A method for processing packets of a VLAN in a network switch is provided. The VLAN comprises a plurality of physical LANs and are divided into a plurality of subnets. The method comprises the steps of: receiving a packet through an ingress port of the network switch, wherein the packet is tagged with a VID of the VLAN; finding a VLAN member according to the VID, wherein the VLAN member represents all ports of the network switch dedicated to serving packets of the VLAN; finding a forwarding scope according to the ingress port, wherein the ingress port is one of the ports dedicated to serving packets of a first subnet of the VLAN and the forwarding scope represents all ports of the network switch dedicated to serving packets of the first subnet; and determining an egress port of the packet according to both the VLAN member and the forwarding scope.
REFERENCES:
patent: 6115379 (2000-09-01), Flanders et al.
patent: 7460542 (2008-12-01), Bhatia
Chao Yun-Fei
Chen Wei-Pin
Chen Ying-Chung
Chung Ming-Chao
Ahmed Salman
Thomas Kayden Horstemeyer & Risley
Via Technologies Inc.
Wong Blanche
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