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Proceedings Paper

Protection and restoration in DWDM networks: recent developments and issues
Author(s): Sudheer Dharanikota; Raj Jain
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Paper 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.

Paper Details

Date Published: 8 July 2002
PDF: 12 pages
Proc. SPIE 4872, Optical Transmission Systems and Equipment for WDM Networking, (8 July 2002); doi: 10.1117/12.475124
Show Author Affiliations
Sudheer Dharanikota, Nayna Networks, Inc. (United States)
Raj Jain, Nayna Networks, Inc. (United States)


Published in SPIE Proceedings Vol. 4872:
Optical Transmission Systems and Equipment for WDM Networking
Benjamin B. Dingel; Brewster Roe Hemenway; Achyut Kumar Dutta; Ken-Ichi Sato, Editor(s)

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