Re: Liaison to Q6/15 and Meeting Questions...

Igor Bryskin <i_bryskin@yahoo.com> Fri, 13 March 2009 17:57 UTC

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Date: Fri, 13 Mar 2009 10:57:49 -0700 (PDT)
From: Igor Bryskin <i_bryskin@yahoo.com>
Subject: Re: Liaison to Q6/15 and Meeting Questions...
To: Malcolm Betts <betts01@nortel.com>, "Razdan, Rajender" <RRazdan@ciena.com>, Greg Bernstein <gregb@grotto-networking.com>, ccamp <ccamp@ops.ietf.org>
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Malcolm,

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.
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