Network protection and OA&M mechanism for WDM optical path transport networks

To realize a large scale and robust photonic transport network, this paper proposes a network protection strategy and maintenance signaling flow for WDM optical path transport networks. The network protection strategy is applicable for mesh-type WDM optical path transport networks, and the OA&M flow that is required for the network to recover from failures are clarified. The proposed OA&M flow does not rely on the OP-AIS (optical path alarm indication signal) generation method. This signaling method can also be applied to the all-optical type network.

[1]  Y. Kobayashi,et al.  SDH-based 10 Gbit/s optical transmission system , 1994, 1994 IEEE GLOBECOM. Communications: The Global Bridge.

[2]  K.-I. Sato.  Photonic transport network OAM technologies , 1996 .

[3]  Ken-ichi Sato,et al.  Network architecture for optical path transport networks , 1997, IEEE Trans. Commun..

[4]  Satoru Okamoto,et al.  Inter-network interface for photonic transport networks and SDH transport networks , 1997, GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record.

[5]  Ken-ichi Sato,et al.  Photonic transport networks based on optical paths , 1995 .

[6]  S. Okamoto,et al.  Optical path cross-connect node architectures for photonic transport network , 1996 .

[7]  Satoru Okamoto,et al.  8/spl times/16 delivery-and-coupling-type optical switches for a 320-Gbit/s throughput optical path cross-connect system , 1996 .

[8]  Satoru Okamoto,et al.  Network performance and integrity enhancement with optical path layer technologies , 1994, IEEE J. Sel. Areas Commun..

[9]  G. R. Hill.  A wavelength routing approach to optical communications networks , 1988, IEEE INFOCOM '88,Seventh Annual Joint Conference of the IEEE Computer and Communcations Societies. Networks: Evolution or Revolution?.

[10]  K.-I. Sato,et al.  Optical path layer technologies to enhance B-ISDN performance , 1993, Proceedings of ICC '93 - IEEE International Conference on Communications.

[11]  Ken-ichi Sato,et al.  Network architecture and management concepts for optical transport networks , 1996, Proceedings of NOMS '96 - IEEE Network Operations and Management Symposium.