Multicast supported virtual local area network switching system and method thereof
US8189582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2006 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Mar 10, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/1886
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multicast-supported virtual local area network switching system and a method thereof comprise a switching engine, a CPU unit, further comprising a mapping storage unit for storing the mapping relationship of the virtual local area network and the multicast stream pushed to the switching system by it, and a switching table storage unit for storing the corresponding relation between ingress virtual local area network and egress virtual local area network; the switching engine receives the internet group management protocol message from the user virtual local area network and transmits the message to the CPU unit for processing, if it is Internet group management protocol join/leave message, the CPU unit looks up the mapping storage unit and forwards it in the looked-up multicast virtual local area network; the switching engine receives the Internet group management protocol messages or multicast data frames from the multicast virtual local area network and forwards them in the looked-up user virtual local area network by looking up the switching table storage unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.