Patent ID: 8327017

Claim:
An autonomous intranet system, comprising: a first data center including a first load balancer that advertises a single-host Internet Protocol (IP) address upstream for the first data center using route health injection (RHI); a second data center including a second load balancer that advertises the single-host IP address upstream for the second data center using RHI; wherein traffic from a number of client sessions is routed to one of the first and second data centers using interior gateway protocol (IGP); wherein the first load balancer performs a first health check and ceases to advertise the single host IP address for the first data center when results of the first health check fail to meet one or more criteria; wherein traffic from at least one of the number of client sessions that was routed to the first data center is routed to the second data center when the first load balancer ceases to advertise the single-host IP address; and wherein at least one of the number of client sessions is active, and traffic from the at least one active session is routed to the first data center when the first load balancer ceases to advertise the single-host IP address.