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Re: [Supa] BGP and SUPA policy

Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Wed, 27 May 2015 12:09 UTC

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Date: Wed, 27 May 2015 14:08:45 +0200
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Susan Hares <shares@ndzh.com>
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Cc: 'John Strassner' <John.sc.Strassner@huawei.com>, supa@ietf.org
Subject: Re: [Supa] BGP and SUPA policy
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Thanks Susan,

I finally found the time to read draft-shaikh-rtgwg-policy-model and
I think I roughly understand what it tries to do.

/js

On Mon, May 11, 2015 at 03:43:42PM -0400, Susan Hares wrote:
> Juregen:
> 
> The IDR Working group is progressing the documents for the BGP policy based
> on a combination of the draft
> http://datatracker.ietf.org/doc/draft-shaikh-idr-bgp-model/   and the draft:
> http://datatracker.ietf.org/doc/draft-zhdankin-idr-bgp-cfg.   This work has
> been ongoing for over 18 months.   A merged draft will be out later this
> month. 
> 
> The authors have agreed to start with the policy
> http://datatracker.ietf.org/doc/draft-shaikh-rtgwg-policy-model, and iterate
> from this point. 
> 
> This is the base BGP work, and upon this foundation other BGP work will be
> expanded.   BGP policy for L2VPN, L3VPN, EVPN is being considered in BESS,
> but it depend on the base BGP work plus extensions to cover other BGP
> configuration and policy. 
> 
> My understanding is that policy is a layered approach going from application
> to AS/Network layer, to device layer.   Please see my understanding of the
> policy layers below.  I would appreciate any insight you have 
> 
> Sue 
> 
> Policy layers: 
> Application layer policies (intent based) 
> AS / Network-wide policy (SUPA policies, IDR SLA policies, L3SM policies  
> AS / Network-wide topologies (I2RS client view of topology, ALTO topology) 
> Device policy for dynamic abstract topologies (I2RS agent Topology, I2RS
> agent RIB, I2RS agent FB-RIBs) 
> Device policy for dynamic policy for protocol (ISIS, OSPF, BGP, SFC, SPRING,
> MPLS) 
> Device policy for dynamic routes (ISIS, OSPF, BGP) 
> Device policy for static routes 
> Device policy for interfaces 
> 
> 
> -----Original Message-----
> From: Supa [mailto:supa-bounces@ietf.org] On Behalf Of Juergen Schoenwaelder
> Sent: Monday, May 11, 2015 11:41 AM
> To: Susan Hares
> Cc: 'John Strassner'; supa@ietf.org
> Subject: Re: [Supa] BGP and SUPA policy
> 
> On Mon, May 11, 2015 at 11:33:44AM -0400, Susan Hares wrote:
> > John and others: 
> > 
> > Could you please describe how SUPA policy interacts with the BGP 
> > policy and dynamic BGP policy?
> 
> We can try. To avoid misunderstandings, can you tell us which BGP documents
> we specifically should look at?
> 
> /js
> 
> -- 
> Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
> Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>
> 
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-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>

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