Re: [Idr] IETF LC for IDR-ish document <draft-ietf-grow-bgp-reject-05.txt> (Default EBGP Route Propagation Behavior Without Policies) to Proposed Standard

<bruno.decraene@orange.com> Tue, 25 April 2017 07:25 UTC

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From: <bruno.decraene@orange.com>
To: Christopher Morrow <morrowc.lists@gmail.com>, "Acee Lindem (acee)" <acee@cisco.com>
CC: Hares Susan <shares@ndzh.com>, idr wg <idr@ietf.org>
Thread-Topic: [Idr] IETF LC for IDR-ish document <draft-ietf-grow-bgp-reject-05.txt> (Default EBGP Route Propagation Behavior Without Policies) to Proposed Standard
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Date: Tue, 25 Apr 2017 07:25:40 +0000
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Subject: Re: [Idr] IETF LC for IDR-ish document <draft-ietf-grow-bgp-reject-05.txt> (Default EBGP Route Propagation Behavior Without Policies) to Proposed Standard
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From: Christopher Morrow Sent: Monday, April 24, 2017 8:59 PM

On Wed, Apr 19, 2017 at 7:30 PM, Acee Lindem (acee) <acee@cisco.com<mailto:acee@cisco.com>> wrote:


On 4/19/17, 7:25 PM, "John Scudder" <jgs@juniper.net<mailto:jgs@juniper.net>> wrote:

>(As an individual contributor)
>
>On Apr 19, 2017, at 7:18 PM, Acee Lindem (acee) <acee@cisco.com<mailto:acee@cisco.com>> wrote:
>> the draft is conspicuously missing a “Backwards Compatibility” section.
>
>Seriously? "Backwards compatibility" in this case is "configure your
>router to do what it used to", right? We need a section to say that?

Anytime one proposes to change the default behavior of a decades old
protocol to be more restrictive, I would expect this to be discussed.

a few times in this discussion people say: "the protocol", but the draft doesn't propose changing the protocol, it proposes that implementations stop being wide-open with respect to send/receive conditioning/filtering.

There's no default behavior change in the protocol (which I think doesn't really talk about filtering prefixes at all, not in the sense of 'prefix-list foo in' anyway).

[Bruno] There seem to be various opinions about this. This is a bit of a concern at this stage. In particular, some previous comments/support may have used the wrong assumptions.
If this is indeed the goal to make no protocol change, including no default behavior change in the protocol, could the document be updated to state this. In which case, Standard Track may be required.

Thanks,
Regards,
--Bruno

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