Patent ID: 9141625
Filing Date: 2015-09-22
Classification: G06F,H04L

Abstract:
1. A method for preserving network flow state, the method comprising: detecting by a first traffic management computing device a migration of at least one application hosted on a first server device coupled to the first traffic management computing device to a second server device coupled to a second traffic management computing device, wherein the detecting further comprises detecting any latency of network traffic between the first server device and the second server device during the migration; communicating by the first traffic management computing device connection state information associated with a network connection between at least one client device and the at least one application to the second traffic management computing device via a communication channel between the first and the second traffic management computing devices; receiving by the first traffic management computing device at least one address resolution protocol packet from the second traffic management computing device and one or more network packets destined for the at least one client device, associated with the network connection, and originating from the at least one application from the second traffic management computing device after the migration, wherein the receiving comprises terminating at least a portion of the network traffic between the first server device and the second server device when the detected latency of network traffic is greater than a first threshold latency; and sending subsequent inbound requests from the at least one client device and associated with the network connection using network address information included in the at least one address resolution protocol packet.