Re: [Idr] [GROW] Review of draft-ietf-grow-bgp-reject-05

Jared Mauch <jared@puck.nether.net> Wed, 19 April 2017 14:03 UTC

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From: Jared Mauch <jared@puck.nether.net>
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Date: Wed, 19 Apr 2017 10:03:35 -0400
Cc: John G Scudder <jgs@juniper.net>, Chris Morrow <morrowc@ops-netman.net>, "idr@ietf.org" <idr@ietf.org>, "grow@ietf.org" <grow@ietf.org>, "draft-ietf-grow-bgp-reject@ietf.org" <draft-ietf-grow-bgp-reject@ietf.org>
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To: "Alvaro Retana (aretana)" <aretana@cisco.com>
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Subject: Re: [Idr] [GROW] Review of draft-ietf-grow-bgp-reject-05
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> On Apr 19, 2017, at 9:53 AM, Alvaro Retana (aretana) <aretana@cisco.com> wrote:
> 
> My bigger issue with 9.1.1 is that it is the first step of the decision process – the intent, as I understand it, is for the routes not to even reach that point.

I’m not in agreement here as it’s well within the power of an implementation to provide a knob to circumvent these safety knobs.  We can’t have people pretending it’s the early 90s anymore.  We must have safe implementations and defaults.

Are you saying that IOS-XR is non-compliant with 9.1.1 because it does not have “bgp unsafe-ebgp-policy” as the default?  At what point does the Cisco implementation make that decision?

We seem to be triangulating on where in the exact decision process people are considering a route feasible or ineligible, can you speak to your implementation?  That may provide guidance in documenting the IOS-XR practice.

- Jared