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:
May. 17, 2011
Filed:
Aug. 18, 2005
Xiangrong Cai, Newton, MA (US);
Haixiang He, Woburn, MA (US);
Xiangrong Cai, Newton, MA (US);
Haixiang He, Woburn, MA (US);
Avaya Inc., Basking Ridge, NJ (US);
Abstract
Described is a method for statically or dynamically enabling a DVMRP router in a DVMRP domain to perform a reverse path forwarding check for an external source. A route report is generated for each known external source and injected into the DVMRP domain. Each route report includes routing information for a respective one of the known external sources. In one embodiment, the route report is generated for each network listed in a unicast routing table maintained on a DVMRP multicast border router and each route report includes unicast routing information for each of the networks and an indicator designating that the routing information is derived from unicast routing information. In another embodiment, if it is determined that routing information for an external source of multicast traffic received at a DVMRP border router is not available, the route report is generated at that time and includes a predetermined metric value.