System and method for performing pre-emptive protection...

Details System and method for performing pre-emptive protection... System and method for performing pre-emptive protection...

2005-07-05

2005-07-05

Dildine, R. Stephen (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Error count or rate

C398S003000, C398S005000, C398S027000, C714S708000, C714S712000

Reexamination Certificate

active

06915463

ABSTRACT:
Methods and network nodes are provided which are adapted to perform protection switching on the basis of raw signal quality information, such as raw BER information, in a manner which instigates the protection switching before an actual failure has occurred. In some embodiments, these methods leverage forward error correction and uncorrected BER to effect traffic redirection before faults are observed at layer2and above. This is as opposed to the method of switching layer2traffic in response to bitstream characteristics observed at that layer.

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