Patent ID: 7246168
Filing Date: 2007-07-17
Classification: H04L

Abstract:
1. In a data link switching (DLSw) network, a method for improving interaction between a first remote DLSw device coupled to a remote subnetwork including a switch having a forwarding table and a local DLSw device coupled to a local subnetwork including local end stations, the local DLSw device establishing a first logical peer connection with the first remote DLSw device in response to a failure of a second remote DLSw device, the method comprising the steps of: at the first remote DLSw device, using configuration information to determine the local end stations that are reachable through the first logical DLSw peer connection; generating one or more test frames at the first remote DLSw device, the test frames having source addresses comprising addresses of the reachable local end stations; forwarding the test frames through the switch to force the switch to immediately update the forwarding table with (i) a port identifier (ID) of a port receiving the test frames at the switch and (ii) the source addresses of those frames.