Method and apparatus for accelerating failover of

专利名称：Method and apparatus for accelerating

failover of VPN traffic in an MPLS providernetwork

发明人：Rajesh Saluja申请号：US10851032申请日：20040521公开号：US08107363B1公开日：20120131

专利附图：

摘要：Failover of VPN traffic between MPLS tunnels may be accelerated by

determining a main and a standby MPLS tunnel for each VPN and passing both the main

and standby MPLS tunnel information to the forwarding plane of a network elementconfigured to implement the VPN. In the event of failover of a main MPLS tunnelinterface, the forwarding plane may be instructed to use the standby MPLS tunnelinstead of the main MPLS tunnel. Since the standby MPLS tunnel has already beendetermined, and information associated with the standby MPLS tunnel has already beenprovided to the forwarding plane, it is not necessary to recompute a new MPLS tunnel orreprogram the forwarding plane using the new MPLS tunnel information. By removingcontrol plane operations and control plane-forwarding plane interaction from thehandling of failovers, the failover recovery time may be accelerated to under 50 ms, tothereby enable VPN connections to handle time sensitive traffic.

申请人：Rajesh Saluja

地址：Nashua NH US

国籍：US

代理机构：Withrow & Terranova, PLLC

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