Abstract
As optical network deployment gains momentum, the efficient routing of optical
connections across national and global networks assumes fundamental importance. When
networks are partitioned into domains, for vendor interoperability, protocol
scaling, or administrative ease, the nature and degree of topology and resource
abstraction in routing protocols must be balanced by the need for intelligent
information sharing to enable effective path computation. Here we focus on
interdomain optical routing. We first highlight some major differences between
optical circuit routing and Internet Protocol (IP) datagram routing and examine
neighbor discovery and diverse routing in the optical case. We then develop a
taxonomy of the information that can be shared between domains, and we discuss
several applications of interdomain optical routing for the single-carrier case.
Finally, we highlight some key issues for the multicarrier case.
© 2002 Optical Society of America
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