Fast Restoration on Network Control Plane Established through Photonic MPLS Routers

Katsuhiro SHIMANO
Kazuhiro NOGUCHI
Masafumi KOGA
Yoshihiro TAKIGAWA
Ken-ichi SATO

IEICE TRANSACTIONS on Communications   Vol.E86-B    No.5    pp.1522-1529
Publication Date: 2003/05/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
photonic network,  restoration,  optical cross-connect,  distributed network control,  

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This paper describes the requirements for fault recovery on photonic networks and proposes a fast restoration scheme for recovering optical networks. The proposed scheme is a type of pre-assignment restoration. The features of the scheme are that it is suitable for multi-recovery classes aimed at fine control of the optical paths and that it establishes harmonization between restoration control and distributed network control such as in IP networks. The scheme is implemented on Photonic multi protocol label switching (MPLS) routers. A restoration demonstration was performed and recovery was achieved within 500ms in the optical layer.