Patent ID: 9049653
Filing Date: 2015-06-02
Classification: H04L,H04W

Abstract:
1. A method for wireless communication, the method comprising: at a first egress router, receiving a packet destined to a destination node, the destination node being supported by a second egress router, wherein a destination address of the packet is the first egress router; and at the first egress router, redirecting the packet to the second egress router, wherein the first egress router and the second egress router comprise edge routers, wherein each of the edge routers provides a contact point between a core network using border gateway protocol and autonomous systems networks using interior gateway protocol, and wherein redirecting the packet comprises: receiving a mapping update at the first egress router, the mapping update deleting a mapping between an IP address of the destination node and an IP address of the first egress router and adding a mapping between the IP address of the destination node and an IP address of the second egress router; adding a mapping between an IP address of the destination node and an IP address of the second egress router at the second egress router; directing an ingress router sending the packet to the destination node to delete a mapping between the IP address of the destination node and an IP address of the first egress router at the ingress router; directing an ingress router sending the packet to the destination node to add a mapping between the IP address of the destination node and an IP address of the second egress router at the ingress router; removing and replacing an IP header of the packet according to the mapping update to include the IP address of the second egress router; and sending the packet to the second egress router.