Patent ID: 8645576
Filing Date: 2014-02-04
Classification: H04L

Abstract:
1. A method comprising: mapping at a first edge device in a first network site, addresses for network devices located in a second network site to an address of a second edge device located in said second network site, said first edge device and said second edge device in communication through a core network; receiving a packet at said first edge device from a network device in said first network site, the packet comprising a destination address of one of the network devices in said second network; performing at said first edge device, a lookup for the destination address in a table mapping said addresses for the network devices in said second network site to said address of said second edge device; encapsulating the packet with a header comprising a destination address of said second edge device; and forwarding said encapsulated packet to the core network; wherein said mapping creates an overlay network between the edge devices and state information for said overlay network is maintained at the edge devices.