Patent ID: 8031714
Filing Date: 2011-10-04
Classification: H04L,H04W

Abstract:
1. A method of using a cache of outgoing packet identifiers to recover from a protocol error, comprising: assigning a first identifier associated with a user entity to a traffic stream at a first node; forwarding the first identifier to a second node; instructing the second node to associate the first identifier with a first plurality of data packets of the traffic stream; storing the first node identifier, the second node identifier, and the address of the first node in a second cache at the second node for each of the first plurality of data packets; sending the first plurality of data packets from the second node to the first node; assigning a second identifier associated with the user entity to the traffic stream at the second node; sending the second identifier to the first node; instructing the first node to associate the second identifier with a second plurality of data packets of the traffic stream; storing the first node identifier, the second node identifier, and the address of the second node in a first cache at the first node for each of the second plurality of data packets; sending the second plurality of data packets from the first node to the second node; receiving an error message from the second node at the first node, indicating that the second identifier was not recognized; searching the first cache for the first node identifier using the second node identifier and the address of the second node; identifying the user entity associated with the first node identifier; and removing the user entity.