Re: GMPLS Routing Drafts

["S Kalipatnapu" <skalipat@starpower.net>]

Manoj,

I am not sure, if I understand your question completely and Kireeti may give
a better answer, but if it helps, it may be noted that sub-IP routing
instance uses control channels for advertising sub-IP domain reachability,
while the IP routing instance advertises over the data channel forwarding
adjacencies created by the GMPLS control plane.

Cheers,
--Sitaram

----- Original Message -----
From: "manoj juneja" <manojkumarjuneja@hotmail.com>
To: <kireeti@juniper.net>; <ccamp@ops.ietf.org>
Sent: Wednesday, August 01, 2001 5:01 PM
Subject: Re: GMPLS Routing Drafts


> Hi Kireeti,
>             I have read the second last para of the draft. It
> states "We call the interfaces over which regular routing adjacencies
> are established "control channels". This definition restricts its scope
> to routing adjacencies i.e. the control channels over which OSPF
> control packets are going to be sent. Does this mean for sending the
> GMPLS control messages, the same routing adjacencies are going to be
> used ? If yes, then how to distinguish between the control channels
> between two OSPF instances and GMPLS instances ? If no, then how this
> GMPLS control channel information is transmitted in routing protocols ?
>
> Regards,
> manoj.
>
>
>
> >From: Kireeti Kompella <kireeti@juniper.net>
> >To: ccamp@ops.ietf.org
> >Subject: Re: GMPLS Routing Drafts
> >Date: Wed, 1 Aug 2001 12:26:44 -0700 (PDT)
> >
> >Hi Manoj,
> >
> > > In section 5.1 of Ist draft, it is mentioned
> > > that "control channels are advertised into routing as normal links as
> > > mentioned in previous section". But in previous section of document I,
> > > there is no reference of control channels.
> >
> >Read the second last para of section 5.
> >
> > > Furthermore, in OSPF
> > > extensions document (IInd draft), there is no mention of control
> > > channels at all.
> >
> >Control channels are part of "regular" OSPF; the GMPLS OSPF draft
> >deals with the formats of the GMPLS TE extensions.  As the abstract says:
> >
> >    This document specifies encoding of extensions to the OSPF routing
> >    protocol in support of Generalized Multi-Protocol Label Switching
> >    (GMPLS).  The description of the extensions is specified in [GMPLS-
> >    ROUTING].
> >
> >BTW, since you have a penchant for pedantry, let me point out that
> >it is inconsistent to call a "missing reference" (or a "no mention")
> >an "inconsistency".
> >
> >On the other hand, we do appreciate your careful reading.
> >
> >Kireeti.
> >
>
>
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