Patent ID: 8156209
Filing Date: 2012-04-10
Classification: H04L

Abstract:
1. A method comprising: receiving in an aggregation device a plurality of keep-alive messages in a communication network; sending an aggregated request packet which includes data indicating that a plurality of statuses of point to point (PPP) sessions is requested; receiving an aggregated reply packet from a peer aggregation device, wherein the aggregated reply packet includes information indicating a respective statuses of at least some of the plurality of PPP sessions, wherein content of a local status table is updated with the respective statuses of the at least some of the plurality of PPP sessions; maintaining the local status table in said aggregation device, wherein said local status table indicates current statuses of sessions supported by said aggregation device; updating said local status table with the information in said aggregated reply packet; and generating a proxy keep-alive reply according to said local status table.