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. 30, 2013
Filed:
Dec. 28, 2010
Debin Zhang, Littleton, MA (US);
Debin Zhang, Littleton, MA (US);
Avaya Inc., Basking Ridge, NJ (US);
Abstract
A method, apparatus and computer program product for providing mulitcast failover and recovery which minimizes lost packets is presented. A first network device returns to a fully active state and starts a multicast hold-down timer. A first message is sent to a second network device, the message indicating at least one Split Multi Link Trunk (SMLT) Virtual Local Area Network (VLAN) Identifier (ID) correlating to the multicast hold-down timer. The first network device receives an acknowledgment of said first message and Layer 2 forwards multicast data traffic to said second network device until the timer expires, whereupon the first device is capable of handling its own multicast data traffic, and then has Layer 2 bridging turned off and enables IP multicast routing. During the period of multicast hold-down timer, the second device will perform IP multicast forwarding on behalf of the first device.