Patent ID: 7769886
Filing Date: 2010-08-03
Classification: H04L

Abstract:
1. A data center topology coupled to the internet, the data center topology comprising: first and second active data centers, the first and second data centers being coupled to the Internet via respective first and second edge routers, wherein each of the first and second data centers comprise computer resources, wherein the first and second edge routers are coupled directly to a first Internet service provider (ISP) using a Border Gateway Protocol (BGP), wherein the second edge router is coupled directly to a second ISP using the BGP, wherein the first edge router is not coupled directly to the second ISP, wherein the data centers are in an autonomous system having a common administration and common routing policies, each edge router broadcasting a common Internet Protocol (IP) address, the edge router linking the first and second data centers to each other using an Interior Gateway Protocol (IGP); each of said edge routers having a multilayer switch feature card (MSFC); each edge router configured to redistribute route health injection (RHI) routes into open shortest path first (OSPF) and to summarize a host route on said MSFC; each edge router further adapted to distribute OSPF into their BGP process using a prefix-list and to update neighboring routers with said routes; means for implementing application-based load balancing between said first and second data centers; and means for detecting a disaster at one of said first and second data centers by detecting a route being removed from a routing table.