Re: Label type to be used
Ashok Narayanan <ashokn@cisco.com> Fri, 19 March 2004 00:02 UTC
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Date: Thu, 18 Mar 2004 18:47:18 -0500
From: Ashok Narayanan <ashokn@cisco.com>
To: Lou Berger <lberger@movaz.com>
Cc: Kireeti Kompella <kireeti@juniper.net>, ccamp@ops.ietf.org
Subject: Re: Label type to be used
Message-ID: <20040318234718.GS19058@cisco.com>
References: <20040318093213.B7263@kummer.juniper.net> <20040318212733.GO19058@cisco.com> <6.0.3.0.2.20040318163938.0375eb28@mo-ex1> <20040318233852.GQ19058@cisco.com>
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I erroneously sent out some wrong text in my previous email which can be ignored as noise: > Plus TDM switches now > have to handle both SUKLM and port labels, and both Intserv and > SONET/SDH TSpecs when in fact there was really no need for it. Meanwhile I have another question. We changed the label type of [PSC, LSC] from "lambda" to "port"; and I guess the reason for that is that a PSC device really isn't going to know about wavelengths. If my understanding is correct, then [TDM, LSC] should also really be a port label. Why isn't it? -Ashok > If the > signal is truly transparent then a TSpec reflecting all the slots on > the link, and a SUKLM label reflecting STS-1, is functionally > identical to a port label and an Intserv tspec (probably the SONET > TSpec is a more accurate description of the link). > > Anyway, I won't really object to the change if nobody else does. > > -Ashok > > > > > Lou > > > > >On Thu, Mar 18, 2004 at 09:58:23AM -0800, Kireeti Kompella wrote: > > >> Hi, > > >> > > >> Arthi and Lou pointed out the following typos in the GMPLS routing doc > > >> (draft-ietf-ccamp-gmpls-routing-09.txt) which is now in the RFC > > >> Editor's queue: > > >> > > >> In section 2.4.7 is the following table defining the type of label > > >> for various combinations of switching types: > > >> > > >> [PSC, PSC] - label is carried in the "shim" header [RFC3032] > > >> [TDM, TDM] - label represents a TDM time slot [GMPLS-SONET-SDH] > > >> [LSC, LSC] - label represents a lambda > > >> [FSC, FSC] - label represents a port on an OXC > > >> [PSC, TDM] - label represents a TDM time slot [GMPLS-SONET-SDH] > > >> [PSC, LSC] - label represents a lambda > > >> [PSC, FSC] - label represents a port > > >> [TDM, LSC] - label represents a lambda > > >> [TDM, FSC] - label represents a port > > >> [LSC, FSC] - label represents a port > > >> > > >> The one at issue is [PSC, LSC]; above it says that the label > > >> represents a lambda; and in the case of [PSC, TDM] with a fully > > >> transparent signal, the above indicates the label represents a TDM > > >> time slot. The proposal is to change this to: > > >> > > >> [PSC, PSC] - label is carried in the "shim" header [RFC3032] > > >> [TDM, TDM] - label represents a TDM time slot [GMPLS-SONET-SDH] > > >> [LSC, LSC] - label represents a lambda > > >> [FSC, FSC] - label represents a port on an OXC > > >> [PSC, TDM] - fully transparent signal: label represents a port > > >> ("transparency" is defined in [GMPLS-SONET-SDH]) > > >> [PSC, TDM] - non-transparent signal: label represents a TDM time > > >> slot [GMPLS-SONET-SDH] > > >> [PSC, LSC] - label represents a port > > >> [PSC, FSC] - label represents a port > > >> [TDM, LSC] - label represents a lambda > > >> [TDM, FSC] - label represents a port > > >> [LSC, FSC] - label represents a port > > >> > > >> Please respond by Friday 3/26, 5pm PST with comments on: > > >> > > >> a) do you agree with the above change? > > >> b) in your implementation today, what do expect the label to represent > > >> i) in the case of [PSC, LSC]? > > >> ii) in the case of [PSC, TDM] with a fully transparent signal? > > >> c) if you implement as the draft says, would it be a hardship to change > > >> this? > > >> > > >> If we can get closure on this, I'll take up the task of modifying the > > >> pending RFC with the ADs. > > >> > > >> Kireeti. > > >> ------- > > > > > >-- > > > > > > > > >--- Asok the Intern ---------------------------------------- > > >Ashok Narayanan > > >IOS Network Protocols, Cisco Systems > > >1414 Mass Ave, Boxborough MA 01719 > > >Ph: 978-936-1608. Fax: 978-936-2218 (Attn: Ashok Narayanan) > > -- > > > > --- Asok the Intern ---------------------------------------- > Ashok Narayanan > IOS Network Protocols, Cisco Systems > 1414 Mass Ave, Boxborough MA 01719 > Ph: 978-936-1608. Fax: 978-936-2218 (Attn: Ashok Narayanan) > -- --- Asok the Intern ---------------------------------------- Ashok Narayanan IOS Network Protocols, Cisco Systems 1414 Mass Ave, Boxborough MA 01719 Ph: 978-936-1608. Fax: 978-936-2218 (Attn: Ashok Narayanan)
- Label type to be used Kireeti Kompella
- Re: Label type to be used Anca Zamfir
- Re: Label type to be used Dimitri.Papadimitriou
- Re: Label type to be used Dimitri.Papadimitriou
- Re: Label type to be used Kireeti Kompella
- Re: Label type to be used Anca Zamfir
- Re: Label type to be used Ashok Narayanan
- Re: Label type to be used Lou Berger
- Re: Label type to be used Ashok Narayanan
- Re: Label type to be used Ashok Narayanan
- Re: Label type to be used dimitri papadimitriou
- Re: Label type to be used Kireeti Kompella
- Re: Label type to be used dimitri papadimitriou
- Re: Label type to be used Kireeti Kompella
- Re: Label type to be used Lou Berger
- RE: Label type to be used Pandian, Vijay
- RE: Label type to be used John Drake
- Re: Label type to be used Ben Mack-Crane
- RE: Label type to be used John Drake
- Re: Label type to be used Kireeti Kompella
- Re: Label type to be used Arthi Ayyangar
- Re: Label type to be used Ben Mack-Crane
- Re: Label type to be used Ashok Narayanan
- RE: Label type to be used John Drake
- RE: Label type to be used Lou Berger
- RE: Label type to be used Ong, Lyndon
- Re: Label type to be used Dimitri.Papadimitriou
- RE: Label type to be used Ong, Lyndon
- Re: Label type to be used Dimitri.Papadimitriou
- RE: Label type to be used Pandian, Vijay
- Re: Label type to be used Dimitri.Papadimitriou