NDLI: Impact of dual-link failures on impairment-aware routed networks

Content Provider	IEEE Xplore Digital Library
Author	Georgakilas, K.N. Katrinis, K. Tzanakaki, A. Madsen, O.B.
Copyright Year	2010
Description	Author affiliation: Aalborg University, Networking and Security Section, Fredrik Bajers vej 7, 9220 Aalborg Ø, Denmark (Madsen, O.B.) \|\| Athens Information Technology, 19.5 Markopoulo Av., Athens, Greece (Georgakilas, K.N.; Katrinis, K.; Tzanakaki, A.)
Abstract	This paper evaluates the impact of dual-link failures on single-link failure resilient networks, while physical layer constraints are taken into consideration during demand routing, as dual link failures and equivalent situations appear to be quite probable in core optical networks. In particular, a shared backup path protection scheme is used as a basis and an impairment-aware routing scheme is compared against classical minimum hop routing. Both approaches employ impairment-aware routing on the primary path, while impairment-aware is compared to min-hop on the backup path. The main metric used to illustrate the performance of the two schemes is the blocking occurring in the process of restoring the established connections that are affected by a dual-link failure. Simulation results show low restoration blocking, thus high ability of a single-failure resilient network to handle dual link failures, identifying the impairment-aware scheme as the choice of preference for both primary and backup paths when the path quality has to be considered.
Starting Page	1
Ending Page	4
File Size	298414
Page Count	4
File Format	PDF
ISBN	9781424477999
e-ISBN	9781424477982
e-ISBN	9781424477975
DOI	10.1109/ICTON.2010.5548983
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-27
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protection Routing Optical fiber networks Physical layer Resilience Wavelength division multiplexing Availability Telecommunication traffic Information technology Information security impairment-aware routing dual-link failures shared protection
Content Type	Text
Resource Type	Article

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