Re: [CCAMP] Ask for comments

Acee Lindem <acee.lindem@ericsson.com> Tue, 27 July 2010 14:26 UTC

From: Acee Lindem <acee.lindem@ericsson.com>
To: Yabin Ye <yabin.ye@huawei.com>
Date: Tue, 27 Jul 2010 10:26:49 -0400
Thread-Topic: [CCAMP] Ask for comments
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Cc: Michèle Wilmet <michele.wilmet@jcp-consult.com>, "ccamp@ietf.org" <ccamp@ietf.org>, "itom@ait.edu.gr" <itom@ait.edu.gr>, Siamak Azodolmolky <siamak.azodolmolky@gmail.com>
Subject: Re: [CCAMP] Ask for comments
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Hi Yabin,

I have a couple comments:

- First, this document extends OSPF TE rather than the OSPF protocol itself.
- Second, the document refers to PLI TE LSAs as if they were separate LSAs. However, I believe these are just additional TE LSAs as described in RFC 3630.
- Similarly, the document refers to the top-level Link and Node TLVs as if they are new PLI TLVs. However, these are referenced with the same code points as the existing Link and Node TLVs. They will need new types if you want to redefine them with different semantics.
- Same for the Remote Interface IP Address Sub-TLV and Local Interface IP Address Sub-TLV. These are not new Sub-TLVs and probably don't need to be even if new top-level PLI TLVs are required.

From a high-level, it seems the only new TLVs required are the ones for PLI and this information can be just advertised with the existing TE information. However, due to the volume and frequency of change, you may want separate LSAs.

Thanks,
Acee

On Jul 26, 2010, at 6:26 AM, Yabin Ye wrote:

Dear All,

We have submitted a draft entitled “OSPF Extensions in Support of Impairment Aware Routing and Wavelength Assignment in Wavelength Switched Optical Networks (WSONs)”.

http://tools.ietf.org/html/draft-agraz-ccamp-wson-impairment-ospf-00

This document suggests to extend the OSPF-TE protocols by including the physical impairments in order to support Generalized Multi-Protocol Label Switching (GMPLS) and Path Computation Element (PCE) control of Impairment Aware Routing and Wavelength Assignment in Wavelength Switched Optical Networks (WSONs).

Due to urgent issues, we are not able to attend the meeting. Attached please find the presentation, and kindly let us know if you have any comments.

Background: This draft is the output of EU FP7 funded DICONET project. More details of this project can be found at http://www.diconet.eu/homepage.asp

Thanks and regards,

Yabin Ye

*********************************************************
Yabin Ye 叶亚斌
European Research Center
Huawei Technologies
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Germany
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Fax: +49 89 158 834 4447
E-mail: yabin.ye@huawei.com<mailto:yabin.ye@huawei.com>
www.huawei.com<http://www.huawei.com/>
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Re: [CCAMP] Ask for comments Acee Lindem
[CCAMP] Ask for comments Yabin Ye
Re: [CCAMP] Ask for comments Yabin Ye
Re: [CCAMP] Ask for comments Acee Lindem
Re: [CCAMP] Ask for comments (Resent with Plain T… Acee Lindem