Patent ID: 9215166
Filing Date: 2015-12-15
Classification: H04L

Abstract:
1. A method comprising: receiving, at a first node of a data network, a message indicating a failure of a communication link of the data network, wherein the message is received at the first node from a second node of the data network, and wherein the second node is an upstream node of the first node; determining an alternate route from the first node to a source node of the data network, wherein the alternate route includes a third node; prior to sending a first join message from the first node to the third node, determining whether the third node is a downstream node of the first node; sending the first join message from the first node to the third node based on a determination that the third node is not a downstream node of the first node; sending a prune message to the second node; and receiving a second join message from the second node in response to the prune message.