Protection and restoration in DWDM networks: recent developments and issues

Sudheer Dharanikota; Raj Jain

doi:10.1117/12.475124

8 July 2002 Protection and restoration in DWDM networks: recent developments and issues

Sudheer Dharanikota, Raj Jain

Proceedings Volume 4872, Optical Transmission Systems and Equipment for WDM Networking; (2002) https://doi.org/10.1117/12.475124
Event: ITCom 2002: The Convergence of Information Technologies and Communications, 2002, Boston, MA, United States

Abstract

Protection using rings has been the common method of reducing downtime on SONET/SDH based telecommunication networks. With the trend towards IP over DWDM, there is a need for IP based protection and restoration mechanisms. In this paper, the mechanisms being developed at several standards organizations including OIF, IETF, and ITU are described. These mechanisms are in some sense more powerful than the previous SONET/SDH based mechanisms and protect against not only link and node failures but also against domain failures. Here domain refers to an entire region of the network. In particular, Shared Risk Group (SRG) concepts being developed at IETF and OIF is explained.

Citation Download Citation

Sudheer Dharanikota and Raj Jain "Protection and restoration in DWDM networks: recent developments and issues", Proc. SPIE 4872, Optical Transmission Systems and Equipment for WDM Networking, (8 July 2002); https://doi.org/10.1117/12.475124

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