Patent ID: 7539760
Filing Date: 2009-05-26
Classification: G06F

Abstract:
1. A method of facilitating failover of a stateful protocol connection from a proxy element to a standby proxy, the method comprising: receiving, at the proxy element, data sent by a first external entity in accordance with a first stateful protocol connection; withholding acknowledgment of receipt of the data at the proxy element until a predefined operation involving the data has been performed, said predefined operation comprising: sending, from the proxy element, the data to a second external entity; and receiving, at the proxy element, a second acknowledgment that the data has been received at the second external entity; establishing a state information connection between the proxy element and the standby proxy; transferring, via the state information connection, state information relating to the first stateful protocol connection from the proxy element to a standby proxy; and sending, from the proxy element, the acknowledgment of receipt to the first external entity subsequent to performance of the predefined operation involving the data.