Re: [irs-discuss] 答复: 答复: IRS comments
Thomas Nadeau <tnadeau@lucidvision.com> Fri, 17 August 2012 14:09 UTC
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From: Thomas Nadeau <tnadeau@lucidvision.com>
Date: Fri, 17 Aug 2012 10:09:17 -0400
To: Mach Chen <mach.chen@huawei.com>
Cc: "irs-discuss@ietf.org" <irs-discuss@ietf.org>, "UTTARO, JAMES" <ju1738@att.com>, "Dutta, Pranjal K (Pranjal)" <pranjal.dutta@alcatel-lucent.com>, "Shah, Himanshu" <hshah@ciena.com>, Alia Atlas <akatlas@gmail.com>
Subject: Re: [irs-discuss] 答复: 答复: IRS comments
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On 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. The idea is definitely to allow direct use of the interface of that is operationally desired. Tom > 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 > _______________________________________________ > 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