Method and apparatus for accelerated protection switching in...

Details Method and apparatus for accelerated protection switching in... Method and apparatus for accelerated protection switching in...

2008-07-22

2008-07-22

Nguyen, Brian D (Department: 2616)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C370S388000

Reexamination Certificate

active

07403473

ABSTRACT:
Accelerated protection switching in a multi-platform network switch may be achieved by allocating connectivity slots from the port cards to the switch cards for all states of a connection through the switch and forming maps of the allocations for use by the port cards and switch cards. By allocating connectivity slots to all states of the connection, the connection will not be blocked in connection with a state change. By storing the slot allocation in maps a connection state change may be implemented by the switch by causing traffic on the connection to be transported using the allocated slots. Various protection modes can use the same connectivity slots with collision avoidance via prepared maps Thus, having predefined paths via allocated slots provisioned through the network element enables the network element to switch very quickly from working to protection to comply with applicable standards and minimize disruption of network traffic.

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