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Re: [Idr] Mail regarding draft-ietf-idr-segment-routing-te-policy

"Susan Hares" <shares@ndzh.com> Tue, 30 April 2019 17:00 UTC

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From: Susan Hares <shares@ndzh.com>
To: 'Chaitanya Varma' <chaitanya.varma@ipinfusion.com>, idr@ietf.org
Cc: 'Gurusiddesh Nidasesi' <gurusiddesh.nidasesi@ipinfusion.com>
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Date: Tue, 30 Apr 2019 13:00:17 -0400
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Subject: Re: [Idr] Mail regarding draft-ietf-idr-segment-routing-te-policy
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Stefano, Clarence, Dhanendra, Paul Eric, and Steve: 

 

I would appreciate if you would take time to answer this query. 

 

Thank you – Sue 

 

From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Chaitanya Varma
Sent: Tuesday, April 30, 2019 4:04 AM
To: idr@ietf.org
Cc: Gurusiddesh Nidasesi
Subject: [Idr] Mail regarding draft-ietf-idr-segment-routing-te-policy

 

Hi, 

 

I have couple of queries from the below draft. 

 

https://tools.ietf.org/html/draft-ietf-idr-segment-routing-te-policy-05

 

  “ Typically, a controller defines the set of policies and advertise

   them to policy head-end routers (typically ingress routers).” 

 

How do we communicate SR policies from controller? Is it through BGP-SR session or PCEP session.

a. If it is through PCEP session what happens if the PCC is non-headend? 

b. If it is through BGP-SR what is the role for PCEP between PCE and PCC?

  “ Moreover, one or more route-target SHOULD be attached to the

   advertisement”

How Route-target should be attached to a SR-NLRI update? 

Is it done through local configuration or picked up based on some dynamic parameter?

   

Appreciate if you can help here.

 

 

Regards,

Chaitanya

 


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