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

John Scudder <jgs@juniper.net> Thu, 20 April 2017 21:12 UTC

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From: John Scudder <jgs@juniper.net>
To: Enke Chen <enkechen@cisco.com>
CC: John Scudder <jgs@juniper.net>, Job Snijders <job@ntt.net>, "idr@ietf.org" <idr@ietf.org>, Hares Susan <shares@ndzh.com>
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: Thu, 20 Apr 2017 21:12:45 +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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(as an individual contributor)

On Apr 20, 2017, at 5:03 PM, Enke Chen <enkechen@cisco.com>; wrote:
> It's not like the issues with software update are new :-)

Yes, exactly. That's why I'm so surprised by this discussion. 

What I still see here is

- on one hand, a worked example showing how an implementor could roll out the functionality without causing heartburn for users. (My paraphrase: expose the default in the configuration. When upgrading old->new, automatically create the corresponding configuration line(s) to configure for legacy behavior.)

- on the other hand, general statements about how this is a hard problem.

I find the specific worked example more convincing. 

--John