Patent ID: 7864665
Filing Date: 2011-01-04
Classification: H04L

Abstract:
1. A method for re-routing voice-over-IP (VoIP) sessions in a VoIP device in response to failure of an IP route, the method comprising: (a) establishing a plurality of IP routes between a first VoIP device and a second VoIP device; (b) assigning VoIP sessions to the IP routes; (c) using a request-reply protocol to substantially periodically monitor status of at least one of the IP routes, wherein using a request-reply protocol to monitor status includes sending layer 2 address resolution protocol (ARP) requests to a next-hop router to test the next-hop router and a link to the next-hop router; and (d) in response to detecting a failure of at least one of the IP routes based on the testing, re-routing VoIP sessions from the at least one failed IP route to at least one alternate IP route.