Gregory D Shepherd

US Patent:

20090274042, Nov 5, 2009

Filed:

Apr 30, 2008

Appl. No.:

12/112641

Inventors:

Rajiv Asati - Morrisville NC, US
Gregory Shepherd - Eugene OR, US
Mohamed Khalid - Cary NC, US

Assignee:

CISCO TECHNOLOGY, INC. - San Jose CA

International Classification:

G06F 11/00

US Classification:

370225

Abstract:

In one embodiment, a network device joins a first multicast tree to receive post-ad-inserted video content. The network device also joins a second multicast tree to receive the pre-ad-inserted video content. The content from the first multicast tree is forwarded by the network device to the receiver(s). The network device determines if it does not receive the content on the first multicast tree due to any failure, in which case, it delivers the content from the second multicast tree to the receiver(s). This enables the receiver to receive the original (pre-ad-inserted) content during the failure in first multicast tree. When the failure is resolved, the network device can go back to sending the content from the first multicast tree to the receiver(s).