[irs-discuss] 答复: 答复: 答复: IRS comments
Mach Chen <mach.chen@huawei.com> Fri, 17 August 2012 02:55 UTC
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From: Mach Chen <mach.chen@huawei.com>
To: Alia Atlas <akatlas@gmail.com>
Thread-Topic: 答复: 答复: [irs-discuss] IRS comments
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Date: Fri, 17 Aug 2012 02:54:39 +0000
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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> <CAG4d1rcni-kpOqKmwX=371m62yJu8fGkGn_neBJ28VbqftA83g@mail.gmail.com> <F73A3CB31E8BE34FA1BBE3C8F0CB2AE22CA3B5CE@SZXEML511-MBS.china.huawei.com> <CAG4d1rfU5djTXrTuW3XbMUFAjsK598nnqzSRFH3yfxOLOgQVzg@mail.gmail.com> <F73A3CB31E8BE34FA1BBE3C8F0CB2AE22CA3B61E@SZXEML511-MBS.china.huawei.com> <CAG4d1rfufXE4EB7Fxa2WE7HxxeE7+i4dFSHMZJ_JhrsiK50TSw@mail.gmail.com>
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Cc: "UTTARO, JAMES" <ju1738@att.com>, "Dutta, Pranjal K (Pranjal)" <pranjal.dutta@alcatel-lucent.com>, "Shah, Himanshu" <hshah@ciena.com>, "irs-discuss@ietf.org" <irs-discuss@ietf.org>
Subject: [irs-discuss] 答复: 答复: 答复: IRS comments
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Hi Alia, I originally mean the IRS client, sorry about the typo:-) Best regards, Mach > -----邮件原件----- > 发件人: Alia Atlas [mailto:akatlas@gmail.com] > 发送时间: 2012年8月17日 10:51 > 收件人: Mach Chen > 抄送: Shah, Himanshu; UTTARO, JAMES; Dutta, Pranjal K (Pranjal); > irs-discuss@ietf.org > 主题: Re: 答复: 答复: [irs-discuss] IRS comments > > Hi Mach, > > The IRS agent is co-located with the portion of the routing system > that it provides an interface too. I think you might be confused > about that - since the IRS agent isn't part of the controller or > orchestrator unless that is offering part of the routing system. > So - I disagree about the impact of multiple protocols. > > Rather than look at the various general SDN use-cases, it is much more > interesting to look at use-cases for IRS. If you care to look at that > draft and find something of relevance for IRS, please do let the list > know. > > Alia > > > On Thu, Aug 16, 2012 at 10:38 PM, Mach Chen <mach.chen@huawei.com> > wrote: > > Hi Alia, > > > > It's great to define uniform interfaces to the applications, but I am not sure > whether the IRS interfaces could be directly used by the applications, in the IRS > framework, the applications talk to the IRS agents, IMHO, the IRS agent (it may > be the controller or orchestrator role from the SDN point of view, and the IRS > interfaces are the southbound interfaces ) should shield the variety of the IRS > interfaces. > > > > And I agree that we should currently focus on the use cases and then define a > clear scope. Here is a rough SDN related use case draft > (http://tools.ietf.org/html/draft-mm-sdn-vc-vn-on-demand-use-case-01), I am > not sure this is related to IRS. > > > > Best regards, > > Mach > > > >> -----邮件原件----- > >> 发件人: Alia Atlas [mailto:akatlas@gmail.com] > >> 发送时间: 2012年8月17日 10:13 > >> 收件人: Mach Chen > >> 抄送: Shah, Himanshu; UTTARO, JAMES; Dutta, Pranjal K (Pranjal); > >> irs-discuss@ietf.org > >> 主题: Re: 答复: [irs-discuss] IRS comments > >> > >> Hi Mach, > >> > >> Right - that is one reason why I'm not sure that a CSPF computation > >> piece is needed for the RSVP sub-interface. On the other side, > >> there's benefit to not requiring an application to understand too many > >> different protocols. > >> > >> We need to discuss what scope makes sense for the sub-interfaces. I > >> think the use-cases will drive this. > >> > >> Alia > >> > >> On Thu, Aug 16, 2012 at 10:06 PM, Mach Chen <mach.chen@huawei.com> > >> wrote: > >> > Hi Alia, > >> > > >> > I am a little confused, the said RSVP sub-interface (on-demand CSPF > interface) > >> seems what exactly PCEP does today. My understanding of IRS is that it may > be > >> complementary on topology discovery. > >> > > >> > Best regards, > >> > Mach > >> > > >> >> -----邮件原件----- > >> >> 发件人: irs-discuss-bounces@ietf.org > [mailto:irs-discuss-bounces@ietf.org] > >> 代 > >> >> 表 Alia Atlas > >> >> 发送时间: 2012年8月17日 9:45 > >> >> 收件人: Shah, Himanshu > >> >> 抄送: UTTARO, JAMES; Dutta, Pranjal K (Pranjal); irs-discuss@ietf.org > >> >> 主题: Re: [irs-discuss] IRS comments > >> >> > >> >> 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=== > >> >> _______________________________________________ > >> >> irs-discuss mailing list > >> >> irs-discuss@ietf.org > >> >> https://www.ietf.org/mailman/listinfo/irs-discuss
- Re: [irs-discuss] IRS comments Thomas Nadeau
- Re: [irs-discuss] IRS comments Gert Grammel
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Gert Grammel
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Thomas Nadeau
- Re: [irs-discuss] IRS comments Lin Han
- Re: [irs-discuss] IRS comments Thomas Nadeau
- Re: [irs-discuss] IRS comments Thomas Nadeau
- Re: [irs-discuss] IRS comments Lin Han
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Lin Han
- Re: [irs-discuss] IRS comments Susan Hares
- Re: [irs-discuss] IRS comments Robert Raszuk
- Re: [irs-discuss] IRS comments Thomas Nadeau
- Re: [irs-discuss] IRS comments Gert Grammel
- Re: [irs-discuss] IRS comments Scott Whyte
- Re: [irs-discuss] IRS comments Susan Hares
- Re: [irs-discuss] IRS comments Gert Grammel
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Scott Whyte
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Shah, Himanshu
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Olen Stokes
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments David Lake (dlake)
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments David Lake (dlake)
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Olen Stokes
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments David Lake (dlake)
- Re: [irs-discuss] 答复: 答复: IRS comments Thomas Nadeau
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Shah, Himanshu
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Olen Stokes
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Robert Raszuk
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Shah, Himanshu
- Re: [irs-discuss] IRS comments UTTARO, JAMES
- Re: [irs-discuss] IRS comments Lin Han
- Re: [irs-discuss] IRS comments Shah, Himanshu
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Shah, Himanshu
- Re: [irs-discuss] IRS comments Shah, Himanshu
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Ramon Casellas
- Re: [irs-discuss] IRS comments Shah, Himanshu
- Re: [irs-discuss] IRS comments Shah, Himanshu
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- [irs-discuss] 答复: IRS comments Mach Chen
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] 答复: IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- [irs-discuss] 答复: 答复: IRS comments Mach Chen
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] 答复: 答复: IRS comments Alia Atlas
- [irs-discuss] 答复: 答复: 答复: IRS comments Mach Chen
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] 答复: 答复: IRS comments Thomas Nadeau
- Re: [irs-discuss] IRS comments Acee Lindem
- Re: [irs-discuss] 答复: 答复: IRS comments Susan Hares
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Dutta, Pranjal K (Pranjal)
- Re: [irs-discuss] IRS comments Edward Crabbe
- Re: [irs-discuss] IRS comments Alia Atlas
- Re: [irs-discuss] IRS comments Thomas Nadeau