A two-hop segment protecting paradigm that unifies node and span failure recovery under p-cycles

Authors:
Diane Prisca Onguetou;Wayne D. Grover
Affiliations:
Telecommunications Research Laboratories, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada;Telecommunications Research Laboratories, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada
Venue:
IEEE Communications Letters
Year:
2010

Citing 1
Cited 1

Mesh-based Survivable Transport Networks: Options and Strategies for Optical, MPLS, SONET and ATM Networking

Mesh-based Survivable Transport Networks: Options and Strategies for Optical, MPLS, SONET and ATM Networking

The backup reprovisioning problem of FIPP p-cycles for node failure on survivable WDM networks

Photonic Network Communications

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Abstract

This letter explains that protecting segments of exactly two hops within an optical network is alone enough to prevent both single span and node failure events. More specifically, we show how to transform a network (topology and working routes) from the two-hop segment perspective and then perform a p-cycle design for the new network. Experimental results typically suggest that two-hop protecting p-cycles are preferable to span- and path-protecting p-cycles for degree-3 or more network instances. The overall two-hop segment protection framework is applicable to any other span-survivability scheme.