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:
Apr. 21, 2009
Filed:
Dec. 31, 2003
Mark Fine, Salt Lake City, UT (US);
Jeremy Garff, Sandy, UT (US);
Kelly Marinan, Salt Lake City, UT (US);
Mark Fine, Salt Lake City, UT (US);
Jeremy Garff, Sandy, UT (US);
Kelly Marinan, Salt Lake City, UT (US);
Alcatel Lucent, Paris, FR;
Abstract
An enhanced DVMRP method for regulating multicast traffic in a destination-based forwarding router is disclosed. As a plurality of neighbor multicast routers are detected and route reports exchanged, the enhanced DVMRP router transmits one or more restricted route reports, each of the restricted route reports omitting the routes associated with one or more of its branch interfaces. With the exception of the neighbor router detected on a given interface, a route report omits reference to other branch interfaces to prevent branch-to-branch routing of multicast streams that may cause a destination-based forwarding router in a multi-access network to transmit duplicate packets to a group member. The enhanced DVMRP method also employs flash updates indicating that some branch interfaces are inaccessible in order to prevent multicast routing through newly-detected neighbor multicast routers.