Re: [Idr] I-D Action: draft-ietf-idr-segment-routing-te-policy-08.txt

Robert Raszuk <robert@raszuk.net> Wed, 20 November 2019 14:18 UTC

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From: Robert Raszuk <robert@raszuk.net>
Date: Wed, 20 Nov 2019 15:18:07 +0100
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To: Przemyslaw Krol <pkrol=40google.com@dmarc.ietf.org>
Cc: "Ketan Talaulikar (ketant)" <ketant@cisco.com>, "idr@ietf.org" <idr@ietf.org>, Prakash Badrinarayanan <prakash@arista.com>, Manoharan Sundaramoorthy <manoharan@arista.com>
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Subject: Re: [Idr] I-D Action: draft-ietf-idr-segment-routing-te-policy-08.txt
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Przemek,

and clearly states the behavior when both are missing (policy not
> accepted). Do you see a value in stating the behavior when both are
> present? Based on the above wording this would deem policy not acceptable
> and in consequence neither accepted locally not propagated down (must not
> accepted, not necessarily usable, in order to propagate as stated in the
> following section). Should it be clearly stated as erroneous condition?
>

Why ? IMO when both present is a valid case as RT can be used locally for
import as well. RT ext-community and NO_ADV community are pretty orthogonal
and serve different purposes.

4.2.4. Propagation of an SR Policy
>
> It seems that the original wording was referring to just BGP when
> addressing the default propagation. In the current version, there is a
> distinction between EBGP (do not propagate) and IBGP (propagate). What is
> the reason for such distinction?
>

Say when you are on RR suppressing IBGP would be a spec bug :).

Thx,
R.


>