Brundidge & Stanger P.C.
Data communication system, device and method of detecting a failure on an access line in a network
When the provider edge PE1 detects the occurrence of a failure at the access line AL1, it sends the label withdraw message to the virtual circuit VC1, and when the provider edge PE2 receives the label withdraw message sent via the virtual circuit VC1, the access line AL2 is put to a link down state, and when the customer edge CE2 detects the link down state of the access line AL2, it switches from the normal path to the redundant path.
Alaxala Networks Corporation
H H H H H H
H04L H04L H04L H04L H04L H04L
inventional inventional inventional inventional inventional inventional
Masaya Kensuke Ken Manabu
Arai Ino Watanabe Fujita