Re: [Ietf-hub-bangalore] IP hop by hop routing with TE

sujay gupta <sujay.ietf@gmail.com> Fri, 06 May 2016 13:26 UTC

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Date: Fri, 6 May 2016 06:26:09 -0700
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From: sujay gupta <sujay.ietf@gmail.com>
To: Dhruv Dhody <dhruv.ietf@gmail.com>
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Subject: Re: [Ietf-hub-bangalore] IP hop by hop routing with TE
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HI Dhruv

Thanks for the link it is a good introduction and relevant details on the
TE.

So when you say PCE works currently with MPLS, I would typically need a
controller (PCEP controller) with a TE database and BGP-LS
for feeding the information, right?

Which comes to the next question after PCEP controller has the TED, is
running a CSPF path a part of the PCEP role, or an application has to be
build over it?

My use case is a single IGP domain requiring light-weight TE.

Hence my choice would be a constraint based source routing mechanism. The
intelligence for which can be calculated using OSPF-TE or ISIS-TE, but the
question
remains is how do set up the transport path without MPLS.

Regards,
-Sujay





On Thu, May 5, 2016 at 5:14 AM, Dhruv Dhody <dhruv.ietf@gmail.com>; wrote:

> Hi Sujay,
>
> PCE *currently* works well with MPLS (RSVP-TE signaling or Segement
> Routing without signalling).
>
> If no MPLS, checkout https://datatracker.ietf.org/doc/rfc3272/ which
> might give you some ideas.
>
> Regards,
> Dhruv
>
> On Thu, May 5, 2016 at 5:37 AM, sujay gupta <sujay.ietf@gmail.com>; wrote:
>
>> Hi Group
>>
>>
>> I am trying to do a hop by hop IP routing with guaranteed/reserved
>> bandwidth for a certain traffic class.
>>
>> The decision should be dynamic, so i will need some IGP or EGP TE
>> extension.
>>
>> So how can I do this with a central controller? (PCE??)
>> And can I do this without a central controller ( equivalent to MPLS;RSVP
>> -TE but without MPLS)
>>
>> Any thoughts?
>>
>> Regards,
>> -Sujay
>>
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