Method and nodes for handling multicast messages
US7792996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2006 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Apr 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/4633
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method and nodes for handling multicast messages over an access domain. The method starts with the receipt of a multicast message from a service provider domain. The method pursues with the identification of a service agent corresponding to the service provider domain from which the multicast message is received. Then, the content of a Virtual Local Area Network (VLAN) Tag field of the multicast message is modified so as to correspond to the identified service agent. The modified multicast message is forwarded on the access domain. Upon receipt of the modified multicast message at an access node, the access node identifies at least one service binding related to the service agent identified in the VLAN Tag field of the received multicast message. For each related service binding, the access node adapts the VLAN Tag field of the multicast message so as to correspond to a local VLAN information, and forwards the adapted multicast message on a user port corresponding to the service binding. The invention also includes an access edge node and an access node adapted to perform the method of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.