Method and apparatus for fault detection/isolation in metro...

Details Method and apparatus for fault detection/isolation in metro... Method and apparatus for fault detection/isolation in metro...

2011-07-05

2011-07-05

Baderman, Scott T (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

Reexamination Certificate

active

07975180

ABSTRACT:
Apparatus and method of detecting a fault in a network service includes an Ethernet access network domain in which a heartbeat message is broadcast at a periodic interval by each of a plurality of edge devices associated with an instance of the network service. Each of the edge devices also receives the heartbeat messages broadcast at the periodic interval from other edge devices. A fault occurrence is identified when the edge device fails to receive an expected heartbeat message at the periodic interval from one of the other edge devices.

REFERENCES:
patent: 7380154 (2008-05-01), Gale et al.
patent: 7644317 (2010-01-01), Sajassi et al.
patent: 7835265 (2010-11-01), Wang et al.
patent: 2003/0067871 (2003-04-01), Busi et al.

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