Optimization of GMPLS BW advertisement for SONET/SDH

Document Type Expired Internet-Draft (individual)
Authors Lyndon Ong  , Andy Malis  , Remi Theillaud 
Last updated 2010-07-14
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


IETF CCAMP WG has defined a set of extensions to OSPFv2 to support ASON routing requirements in [RFC5787]. No extensions were defined for bandwidth advertisement as the Interface Switching Capability Descriptor may optionally be included for each layer of a multi-layer link [RFC4202]. However, for some types SONET/SDH links there can be several data plane layers supported by a single link, and as a result a need to carry several copies of the ISCD. This draft defines an optimization for bandwidth advertisement for SONET/SDH that removes the need to carry multiple copies of the ISCD sub-TLV and has been designed to be consistent with advertisement of bandwidth for OTN.


Lyndon Ong (lyong@ciena.com)
Andy Malis (andrew.g.malis@verizon.com)
Remi Theillaud (remi.theillaud@marben-products.com)

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