At 12:40 AM 11/10/2010, Greg Dowd wrote:

GMPLS extensions to communicate latency as a TE performance metric
                 draft-wang-ccamp-latency-te-metric-01

http://tools.ietf.org/html/draft-wang-ccamp-latency-te-metric-01

Here’s a submission defining support for communicating node/path latency and variation.  This is the type of effort I think we could incorporate into our discussions of synch network detection/construction.

Any comments?

Based on a quick look, this requires one-way measurement
and therefore, some degree of synchronization for accuracy.
It would be good to keep the "round-trip" option
completely out of this capability - and specify that "one-way"
latency must not be derived from arithmetic on a round-trip (RT)
measurement result.  In particular, the delay variation
derived from RT/2 will not be useful, AFAIK.

my 2 cents,
Al


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