The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2011
Filed:
Dec. 21, 2007
Bashar Said Bou-diab, Ottawa, CA;
Olivier Le Moigne, Ottawa, CA;
John Coulter, Richmond, CA;
Alcatel Lucent, Paris, FR;
Abstract
The present invention permits translation of SM addresses (*, G) and (*, G) to configurable SSM addresses (S, G). IGMPv2 group membership queries from the receiver subnet are translated to IGMPv3 membership queries for processing in a SSM network. In the preferred embodiment, packets travel via a connection to the multicast router (mrouter). The mrouter queries an IGMPv2 receiver. The IGMPv2 receiver generates a membership report and sends it back to the mrouter. The mrouter translates the membership report into a (S, G) as specified in a multicast address translation table and stores the translation in the Multicast Forward Information Base (MFIB) located in the mrouter. Multicast payload addressed (S, G) flowing towards the IGMPv2 receiver can be translated to (S, G). When media data is addressed to (S, G), the mrouter consults the MFIB for forwarding and can also translate the destination address to (S, G).