Multiplex communications – Fault recovery – Bypass an inoperative station
Reexamination Certificate
2006-01-31
2006-01-31
Duong, Frank (Department: 2666)
Multiplex communications
Fault recovery
Bypass an inoperative station
C370S221000, C370S223000, C370S224000
Reexamination Certificate
active
06992975
ABSTRACT:
A network element receives frames from multiple ring networks. Each ring network linked to the network element is supported by a designated support program. The received frames are monitored for conditions indicative of a failure in one of the ring networks. Upon detection of a failure condition, the designated support program for the failing ring network is determined and notified. The designated support program then addresses the failure condition by, for example, switching to a backup link. In one example, the multiple ring networks are SONET BLSR networks.
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Daniel Philippe
Elliott Paul
Le Phu
Neuendorff Keith
Nie Xiaopin
Campbell Stephenson Ascolese LLP
Cisco Technology Inc.
Duong Frank
Moore Michael J.
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