Malcolm,
Agree completely with the suggested refinement.
Cheers,
Igor
Agree completely with the suggested refinement.
Cheers,
Igor
From: Malcolm Betts <betts01@nortel.com>
To: "Razdan, Rajender" <RRazdan@ciena.com>; Greg Bernstein <gregb@grotto-networking.com>; ccamp <ccamp@ops.ietf.org>
Sent: Thursday, March 12, 2009 1:12:57 PM
Subject: RE: Liaison to Q6/15 and Meeting Questions...
One refinement on:
(e) Measurements -- G.697
seems to give a rough framework on applications of measurement, types of
measurements, measurement parameters. Is this a good place for anyone
investigating the relationship between control plane and optical measurements to
start? Other recommendations/ideas
We
should ask Q6 how the results of these measurements could be used to refine the
values of the impairment parameters used when computing an optical path.
As a part of this discussion we also need to understand when (i.e. what event)
triggers the measurements.
Malcolm Betts
Nortel Networks
Phone: +1 613 763 7860 (ESN
393)
email:
betts01@nortel.com
From: owner-ccamp@ops.ietf.org [mailto:owner-ccamp@ops.ietf.org] On Behalf Of Razdan, Rajender
Sent: Thursday, March 12, 2009 12:32 PM
To: Greg Bernstein; ccamp
Subject: RE: Liaison to Q6/15 and Meeting Questions...
Hi Greg/all,
I think we do have a consensus on
the relative roles of Q6 and CCAMP with regard to the WSON work. It seems to me
that the questions Don put up earlier, along with the set of questions you have
below, form an excellent starting point for questions we should put forth to Q6
in its upcoming meeting. In addition to everything else I would also add
:
FOADM/ROADM/OXC charcterization, i.e. are there any general
characterization/parametrization we can use? In particular is there a way to
characterize the loss in a photonic network taking into account the filter
characteristics of these devices?
Cheers,
Rajender Razdan
From: owner-ccamp@ops.ietf.org [mailto:owner-ccamp@ops.ietf.org]
On Behalf Of Greg Bernstein
Sent: Thursday, March 12, 2009 11:53 AM
To: ccamp
Subject: Liaison to Q6/15 and Meeting Questions...
Hi folks, we seem to be re-iterating some issues that I thought we
had reached consensus on. However in this conversation some good questions have
arisen for the special CCAMP/Q6 meeting.Sent: Thursday, March 12, 2009 11:53 AM
To: ccamp
Subject: Liaison to Q6/15 and Meeting Questions...
I thought we had consensus that CCAMP will not define new optical impairments, parameters, etc... but we will use ITU-T existing definitions. If we think we need something we will bring this up with Q6. The response we've seen from Q6 so far has been very positive in working together in this area.
Some potential questions and areas for discussion:
(a) WDM Link characterization -- G.680 gives lots of examples in appendices but does not actually specify yet. There are a host of other ITU-T documents that cover fiber, amplifiers, dispersion compensation modules, etc... So we'll want Q6's input on a somewhat self contained model.
(b) Receiver characterization -- Is there are general characterization/parameterization we should use?
(c) Transmitter characterization -- Similar question
(d) Signal characterization -- There are a number of different documents in this area, some are specific to SDH, some are very general WDM interface characterizations; Guidance would be welcome so that we don't over specialize.
(e) Measurements -- G.697 seems to give a rough framework on applications of measurement, types of measurements, measurement parameters. Is this a good place for anyone investigating the relationship between control plane and optical measurements to start? Other recommendations/ideas.
(f) Characterization of optical parameters -- (feedback from Q6 desired) parameters that are NE wide, apply to each port, apply between particular ports (port-to-port), frequency dependence of parameters (important for info model and encoding)
Other questions for Q6 from CCAMP?
Best Regards
Greg
--
===================================================
Dr Greg Bernstein, Grotto Networking (510) 573-2237