H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/437 (2006.01) H04B 10/20 (2006.01) H04L 29/14 (2006.01) H04Q 11/00 (2006.01)
Patent
CA 2339716
A system and a method of combining logical ring protection and mesh restoration mechanisms for recovery from link and node failures in optical networks is provided. Logical rings, or pre-configured protection cycles are defined over the physical mesh optical network for protection purposes, and they are operational only in transient time. A Wavelength Routing Protocol (WRP) and a Wavelength Distribution Protocol (WDP) have been devised to support network-wide routing and signalling. When a switch detects a link failure, the traffic being protected is bridged to the logical ring first, then the switch sends failure notifications to all the other nodes via the WRP. After receiving notification, all nodes being affected by the failure re-calculate and re-configure new globally optimized restoration paths via the WDP protocol, to eventually re-direct the traffic into such a new path. Node failure is addressed through a diversity path restoration operation. By combing logical ring protection and mesh path restoration, both fast protection speed and bandwidth efficiency are achieved.
Felske Kent E.
Gruber John G.
Wang Guo Qiang Q.
Nortel Networks Limited
Ridout & Maybee Llp
LandOfFree
Two stage, hybrid logical ring protection with rapid path... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two stage, hybrid logical ring protection with rapid path..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two stage, hybrid logical ring protection with rapid path... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1877657