Patent ID: 7835377

Claim:
A method of supporting session continuity for a terminal served by a first gateway and a second gateway, the method comprising: storing a first binding cache entry (BCE) comprising a first terminal identity, a first subnet prefix and a first gateway identity; storing a second BCE comprising a second terminal identity, a second subnet prefix and a second gateway identity; determining that the first and second terminal identities are for a same terminal; responsive to determining that the first and second terminal identities are for the same terminal, sending the second subnet prefix towards the first gateway and sending the first subnet prefix towards the second gateway; receiving data from the second gateway, the data carrying the second gateway identity and a terminal address comprising the first subnet prefix; based on the terminal address, reading the first BCE; determining a mismatch between the received second gateway identity and the first gateway identity stored in the first BCE; and responsive to determining the mismatch, storing redirection information in the first BCE.