Abstract
As networks migrate from stacked rings to meshes because of the poor scalability of interconnected rings and the excessive resource redundancy used in ring-based protection [MacDonald et al., 2000], mesh-structured protection schemes have been receiving increasing attention [Doshi et al., 1999, Ramamurthy et al., 2003, Iraschko et al., 1998, Van Caenegem et al., 1998, Crochat et al., 2000, Miyao and Saito, 1998, Mohan et al., 2001]. We review the work on WDM mesh protection for a given set of lightpath requests (which is the focus of this chapter), and classify them based on whether they treat the underlying mesh as a whole, or they fragment the mesh into other protection domains [Gerstel and Ramaswami, 2000a], or they split an end-to-end lightpath into different segments.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Other failure scenarios may include shared-risk-link-group (SRLG) failures [Zang et al., 2003, Strand et al., 2001], and the more general shared-risk-group (SRG) failures. SRLG is an abstraction referring to a group of fibers that may be prone to a common failure. SRG is an abstraction referring to a group of network elements (including fibers, OXCs, and other network components) that may be subject to a common failure. SRG is an abstraction referring to a group of network elements (including fibers, OXCs, and other network components) that may be subject to a common failure.
Note that the recovery time here is similar to the protection-switching time defined in [Ramamurthy et al., 2003] and the restoration speed defined in [Doshi et al., 1999], but it has some improvements, e.g., pipelining the switch configurations.
The probability that a fiber fails is proportional to the length of the fiber [Hac, 1994].
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer Science+Business Media, Inc.
About this chapter
Cite this chapter
Ou, C.S., Mukherjee, B. (2005). Sub-Path Protection for Scalability and Fast Recovery. In: Survivable Optical WDM Networks. Optical Networks. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-24499-0_3
Download citation
DOI: https://doi.org/10.1007/978-0-387-24499-0_3
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-24498-3
Online ISBN: 978-0-387-24499-0
eBook Packages: EngineeringEngineering (R0)