Patent ID: 7289433
Filing Date: 2007-10-30
Classification: H04L

Abstract:
1. A method for preventing information losses due to network node failure, the method comprising the steps of: operatively connecting at least one backup node to a primary node; synchronizing the at least one backup node and the primary node; receiving, from a first endpoint, ingress traffic in the primary node; replicating the ingress traffic to the at least one backup node; outputting, from the primary node, primary egress traffic; outputting, from the at least one backup node, backup egress traffic; determining if the primary node has failed; transmitting, to a second endpoint, the primary egress traffic if it is determined that the primary node has not failed; and transmitting, to the second endpoint, the backup egress traffic from a selected one of the at least one backup nodes if it is determined that the primary node has failed, wherein the backup egress traffic from the selected one of the at least one backup nodes replaces the primary egress traffic to the second endpoint and the backup node becomes the primary node for subsequent traffic.