Re: I-D ACTION:draft-chen-ccamp-ospf-interas-te-extension-01.txt

Hmmm.

Question: Does anyone use multi-access TE links between ASes?

If so, we should address them (probably the same way that we address them 
within an AS/area - that is by defining a separate link type). But if no-one 
uses them, then we should leave that definition until there is a need.

I see that section 3.2 of Mach's I-D is very explicit that the new link type 
is p2p, so that is good.

Cheers,
Adrian
----- Original Message ----- 
From: "Mach Chen" <mach@huawei.com>
To: "Vijayanand C - TLS, Chennai." <vijayc@hcl.in>
Cc: <ccamp@ops.ietf.org>
Sent: Friday, February 02, 2007 10:19 AM
Subject: Re: I-D ACTION:draft-chen-ccamp-ospf-interas-te-extension-01.txt

> Hi vijay,
>
> First, thanks for your questions.
>
> So far this version doesn't mention inter-as multi-access links, an 
> alternative method, as you said,
> of describing this kind of links is to treat them as multiple P2P links. I 
> will supplement this description
> in the future revised version.
>
> Best regards,
>
> Mach
>
> ----- Original Message ----- 
> From: "Vijayanand C - TLS, Chennai." <vijayc@hcl.in>
> To: "Mach Chen" <mach@huawei.com>; <ccamp@ops.ietf.org>
> Sent: Friday, February 02, 2007 3:30 PM
> Subject: RE: I-D ACTION:draft-chen-ccamp-ospf-interas-te-extension-01.txt
>
>
>
> The draft does not seem to address multi-access links between ASes.
> Should the inter-AS link only be a point to point link or you are trying
> to model multi-access links as multiple P2P links ( in which case B.W
> calculations etc would not be straightforward)
>
>
>
> Regards
> Vijay
>
>> -----Original Message-----
>> From: owner-ccamp@ops.ietf.org [mailto:owner-ccamp@ops.ietf.org] On
> Behalf
>> Of Mach Chen
>> Sent: Friday, February 02, 2007 6:49 AM
>> To: ccamp@ops.ietf.org
>> Subject: Fw: I-D
> ACTION:draft-chen-ccamp-ospf-interas-te-extension-01.txt
>>
>> Hi,
>>
>> We have just submitted the second revision of our
> I-D,draft-chen-ccamp-
>> ospf-interas-te-extensions.
>>
>> The problem we are trying to solve is how a PCE or entry-point ASBR
> can
>> select the exit-point ASBR for a TE LSP when it knows (from the ERO)
> the
>> downstream AS or the downstream ASBR. We believe that IGP needs to
> flood
>> the inter-AS TE links together with additional information about the
>> neighboring AS and ASBR. The problem arises for both the pd-path and
> brpc
>> computation methods.
>>
>> We would welcome your input on our problem statement and our proposed
>> solution.
>>
>> Best regards,
>>
>> Mach & Renhai
>>
>> ----- Original Message -----
>> From: <Internet-Drafts@ietf.org>
>> To: <i-d-announce@ietf.org>
>> Sent: Friday, February 02, 2007 4:50 AM
>> Subject: I-D ACTION:draft-chen-ccamp-ospf-interas-te-extension-01.txt
>>
>>
>> >A New Internet-Draft is available from the on-line Internet-Drafts
>> > directories.
>> >
>> >
>> > Title : OSPF Extensions in Support of Inter-AS (G)MPLS TE
>> > Author(s) : M. Chen, R. Zhang
>> > Filename : draft-chen-ccamp-ospf-interas-te-extension-01.txt
>> > Pages : 11
>> > Date : 2007-2-1
>> >
>> > This document describes extensions to the OSPF protocol to support
>> >   Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS)
>> >   Traffic Engineering (TE) for multiple Autonomous Systems (ASes).
> It
>> >   defines OSPF extensions for the flooding of inter-AS links which
> can
>> >   be used to perform inter-AS path computation.
>> >
>> > A URL for this Internet-Draft is:
>> >
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>> extension-01.txt
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