| US 7,545,755 B2 | ||
| Routing switch detecting change in session identifier before reconfiguring routing table | ||
| Jason C. Fan, Mountain View, Calif. (US); Prasad P. Jogalekar, Sunnyvale, Calif. (US); and Vinay K. Bannai, Mountain View, Calif. (US) | ||
| Assigned to ADTRAN Inc., Huntsville, Ala. (US) | ||
| Filed on May 26, 2004, as Appl. No. 10/854,049. | ||
| Application 10/854049 is a continuation of application No. 09/519441, filed on Mar. 03, 2000, abandoned. | ||
| Prior Publication US 2004/0213274 A1, Oct. 28, 2004 | ||
| Int. Cl. H04L 12/28 (2006.01); G06F 13/00 (2006.01) | ||
| U.S. Cl. 370—254 [370/401; 709/221] | 26 Claims |
| 1. A method for validating a topology in an optical communications network, the topology including at least one node, comprising:
(a) detecting a topology change in the network;
(b) performing topology discovery, including resetting a topology discovery timer;
(c) determining if a topology stability timer has exceeded a threshold, including if the topology stability timer has not
exceeded the threshold, then determining if the topology discovery timer has exceeded a maximum time limit; and
(d) performing topology validation for the topology change, if the topology stability timer has exceeded the threshold.
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