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OSPF Extensions for Routing Constraint Encoding in Flexible-Grid Networks

Document type: Expired Internet-Draft (individual)
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Last updated: 2013-03-11 (latest revision 2012-09-06)
Intended RFC status: Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


In Flexible-Grid networks, network elements and links may impose additional routing constraints, which cannot be ignored in Routing and Spectrum Assignment (RSA) process. This document describes the requirements of such constraints, and then provides efficient encodings to specify how the information is carried.


Lei Wang <>
Yao Li <>
Guoying Zhang <>

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)