Protecting route design method in a communication network

Details Protecting route design method in a communication network Protecting route design method in a communication network

2007-03-06

2007-03-06

Baderman, Scott (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C709S239000, C370S225000, C398S005000

Reexamination Certificate

active

09942217

ABSTRACT:
A protecting route design method is disclosed for a communication network including a plurality of nodes having preset information on a protecting route to switch over in parallel from a working route thereto when link or node failure occurs, according to a failure notification message including failure location information being transmitted from a failure detection node to each node. The protecting route design method includes the steps of searching a protecting route which can minimize a transfer time of the failure notification message from the failure detection node; and then, updating the searched protecting route to a protecting route having a spare communication capacity sharable for a different failure and having a route switchover time to be completed within a given time limit.

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