Method for processing packets of a VLAN in a network switch
US7660291B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2005 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Jan 11, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/354
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.