Routing table configuration for MPlambdaS (multi-protocol lambda switching) protection and restoration in optical mesh networks

• US 20020089712A1
• Filed: 02/13/2001
• Published: 07/11/2002
• Est. Priority Date: 01/10/2001
• Status: Abandoned Application

• Current Assignee: Information and Communications University Educational Foundation
• Original Assignee: Information and Communications University Educational Foundation
• Inventors: Kang, Min Ho, Choi, Jung Yul, Kim, Byung Jae
• Application Number:
  US09/781,290
• Publication Number:
  US 20020089712A1
• Time in Patent Office: Days
• US Class Current: 398/1
• CPC Class Codes: H04B 10/032 using working and protection systems H04J14/0287 takes precedence
• CPC Class Codes: H04J 14/0227 Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
• CPC Class Codes: H04J 14/0241 Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
• CPC Class Codes: H04J 14/0284 WDM mesh architectures
• CPC Class Codes: H04J 14/0295 Shared protection at the optical channel (1:1, n:m)
• CPC Class Codes: H04Q 11/0066 Provisions for optical burst or packet networks
• CPC Class Codes: H04Q 2011/0077 Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS
• CPC Class Codes: H04Q 2011/0081 Fault tolerance; Redundancy; Recovery; Reconfigurability

Abstract

The present invention relates to protection and restoration method for MPXS in optical mesh networks, particularly to protection and restoration method which can find and restore fast failures by configuring routing table with working label and protection label when failures occur at links or nodes.

According to the present invention, by configuring a routing table consisted of working label and protection label and by setting an optical path as working path and protection path, data is transferred through the working path, and when a failure occurs in a optical path, data is transferred through a protection path by using a preliminarily configured protection label and by switching to.

According to the present invention, by configuring routing table with working label and protection label, failures can be restored fast when failures occur at links or nodes, and whole network resources can be applicable.

Claims

1. Protection and restoration method for MPS in optical mesh networks wherein a routing table is configured synchronously, which is configured by routing protocols, with working label and protection label and sets an optical path as an working path and a protection path so that data is guided to pass through the said working path and to be switched using preliminarily configured protection label to pass through a protection path when failures occur in an optical path.