I-D Action:draft-zhang-ccamp-gmpls-g709-lmp-discovery-04.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.

	Title           : Link Management Protocol (LMP) extensions for G.709 Optical Transport Networks
	Author(s)       : F. Zhang, et al.
	Filename        : draft-zhang-ccamp-gmpls-g709-lmp-discovery-04.txt
	Pages           : 16
	Date            : 2011-04-05

Recent progress of the Optical Transport Network (OTN) has introduced 
new signal types (i.e., ODU0, ODU4, ODU2e and ODUflex) and new 
Tributary Slot granularity (1.25Gbps). 
 
 
 
Zhang





 Expires October 2011





 [page 1] 

draft-zhang-ccamp-gmpls-g.709-lmp-discovery-04.txt


  April 2011 


Since equipments deployed prior to recently defined ITU-T 
recommendations only support 2.5 Gbps Tributary Slot granularity and 
ODU1, ODU2 and ODU3 containers, the compatibility problem should be 
considered. In addition, a Higher Order ODU (HO ODU) link may not 
support all the types of Lower Order ODU (LO ODU) signals defined by 
the new OTN standard because of the limitation of the devices at the 
two ends of a link. In these cases, the control plane is required to 
run the capability discovering functions for the evolutive OTN. 

This document describes the extensions to the Link Management 
Protocol (LMP) needed to discover the capability of HO ODU link, 
including the granularity of Tributary Slot to be used and the LO ODU 
signal types that the link can support.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-zhang-ccamp-gmpls-g709-lmp-discovery-04.txt

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