Patent ID: 7492787
Filing Date: 2009-02-17
Classification: H04L,H04W

Abstract:
1. A method of switching in a device between a plurality of local link elements provided at the device, the device communicating on an IP-based single broadcast subnet, comprising: when the device has an on-going communication in the IP-based single broadcast subnet via a first link element of the device having a first link-layer address, selecting a second link element of the device having a second link-layer address different than said first link-layer address, said on-going communication being identified by each local IP address of the device and including a transport-layer connection providing end-to-end communication between applications; maintaining, by the device, an interested host cache (IHC) by storing for each local IP address of the device an address of a foreign host computer in response to receiving from a foreign host computer a request for link address mappings of any of IP addresses of the device or sending by the device for link address mappings of the foreign host computer; and migrating, by the device, the on-going communication from the first link element of the device to the second link element of the device while maintaining said on-going communication by: