[irs-discuss] 答复: IRS comments

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===
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