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 G. Scudder" <jgs@juniper.net> Wed, 26 April 2017 15:03 UTC

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From: "John G. Scudder" <jgs@juniper.net>
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Date: Wed, 26 Apr 2017 11:02:59 -0400
CC: Robert Raszuk <robert@raszuk.net>, idr wg <idr@ietf.org>
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To: Christopher Morrow <morrowc.lists@gmail.com>
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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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#include individual_contributor_disclaimer

On Apr 26, 2017, at 10:08 AM, Christopher Morrow <morrowc.lists@gmail.com>; wrote:
> 'why not do it more!' has lots of reasons in both directions, but really that's not the point of this draft anyway.

Seems that way to me, too. 

AFAICT:

- bgp-reject is a case of trying to patch one special case, but an important special case. If the special case is important enough, the cost/benefit analysis works out.
- Perfect is often the enemy of good.
- The case Robert has just raised ("it's difficult for providers to filter their customers") is EXACTLY WHY bgp-reject exists, to put the onus on the customer to configure a filter.
- Putting all our eggs in the basket of "perfect filtering by providers" is known from experience to be imprudent (see also: BCP-38).

$0.02,

--John