Re: [irs-discuss] IRS comments

Alia Atlas <akatlas@gmail.com> Fri, 17 August 2012 01:44 UTC

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References: <812700A304640D4292205D5E83FC59E1061C211D@p-embx01-eq.jnpr.net> <CAG=JvvjYk_E6+Qdidyyjc5oDss9HeA2aq2pt5ciQeX06fuiWsQ@mail.gmail.com> <CAG4d1reLL2_4KRb6yseJK9WTB47YzumMBGdu+UwcOWXxmE0M8Q@mail.gmail.com> <CAG=JvvjVhGsVcSzEFxDKKfNckQxgQiWeezWvwpcoAOSgOP--Nw@mail.gmail.com> <CAG4d1rd_p6x_+PsHWtsYU=oOCT-GnmnZNL+MHcJf4NEG5boP7A@mail.gmail.com> <B37E6A2CE5957F4E83C1D9845A0FFE38014A33BC4A@MDWEXGMB02.ciena.com> <CAG4d1reWGjUU-z=9Gx_MvetAWF6wM8oUMpQRc9hxOg1MU37X_w@mail.gmail.com> <A3C4E51A53661B4EBEE7C5F5E6FCDEB5025AB94FE6D2@USEXCHANGE.corp.extremenetworks.com> <CAG4d1rfD8_0WgzRqH-OVAxfn1RYNfY_ynwkcmqN3MBYyrn5TnQ@mail.gmail.com> <3512BB31280C39448A9880F61DD54CEB09C07E@xmb-aln-x09.cisco.com> <CAG4d1rcvk1RmRmrpCwiAGx9s0v3X9aPECdeF1Wz7WSuYwzdFKA@mail.gmail.com> <CACKN6JH8eiYty3QOZ+E5Nt0wO3nYn87yB3pKixJK-3dnaOXfLQ@mail.gmail.com> <CACKN6JFMZqOnHU=vEkx8WxwSLjg5MYY=-VoJ7uOt8SAzvbAT6Q@mail.gmail.com> <A3C4E51A53661B4EBEE7C5F5E6FCDEB5025AB94FE847@USEXCHANGE.corp.extremenetworks.com> <B37E6A2CE5957F4E83C1D9845A0FFE38014A33C0A0@MDWEXGMB02.ciena.com> <CAG4d1rehfWk-HX27eysze8zdDzjNk4h4wwj2zV6_WJWxoNxY8Q@mail.gmail.com> <B37E6A2CE5957F4E83C1D9845A0FFE38014A33C26F@MDWEXGMB02.ciena.com> <B17A6910EEDD1F45980687268941550FB7B7B6@MISOUT7MSGUSR9I.ITServices.sbc.com> <B37E6A2CE5957F4E83C1D9845A0FFE38014A33C2BD@MDWEXGMB02.ciena.com> <C584046466ED224CA92C1BC3313B963E09F22C5413@INBANSXCHMBSA3.in.alcatel-lucent.com> <B37E6A2CE5957F4E83C1D9845A0FFE38014A33C554@MDWEXGMB02.ciena.com> <CAG4d1rdkT3C9tyuzY+Q8rCQJQ1C419xHTj_jCY5h1YXBMAbi3g@mail.gmail.com> <B37E6A2CE5957F4E83C1D9845A0FFE38014A33C7ED@MDWEXGMB02.ciena.com>
Date: Thu, 16 Aug 2012 21:44:47 -0400
Message-ID: <CAG4d1rcni-kpOqKmwX=371m62yJu8fGkGn_neBJ28VbqftA83g@mail.gmail.com>
From: Alia Atlas <akatlas@gmail.com>
To: "Shah, Himanshu" <hshah@ciena.com>
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Cc: "UTTARO, JAMES" <ju1738@att.com>, "Dutta, Pranjal K (Pranjal)" <pranjal.dutta@alcatel-lucent.com>, "irs-discuss@ietf.org" <irs-discuss@ietf.org>
Subject: Re: [irs-discuss] IRS comments
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I'm not entirely clear on the model or question you are asking.  An
application could learn topology via IRS to the appropriate IRS
agents, do CSPF computations, and support a signaling/CSPF-like
sub-interface (if we define such for IRS) as an IRS agent.  Another
application could query the first for the CSPF results and then use
IRS to trigger signaling on the appropriate device.

I'm not sure if it makes sense to have an IRS sub-interface that
requests CSPF computation, but it might come as part of an RSVP
sub-interface to trigger signaling.  We'll have to see about
use-cases.

I don't see a strong motivation to duplicate existing work.

Alia

On Thu, Aug 16, 2012 at 2:46 PM, Shah, Himanshu <hshah@ciena.com> wrote:
> I was wondering if PCE and IRS could have overlapping functionality.
>
> Meaning, can an IRS interface user at both ends (node and controller) be a non-PCE entity and perform
> the same service as what PCE does?
>
> It seems like you are saying that could work co-operatively...
>
> Thanks,
> himanshu

==snip===