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

Job Snijders <> Thu, 20 April 2017 09:09 UTC

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Date: Thu, 20 Apr 2017 11:09:41 +0200
From: Job Snijders <>
To: Enke Chen <>
Cc: John Scudder <>, idr wg <>, Hares Susan <>
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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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On Wed, Apr 19, 2017 at 04:34:10PM -0700, Enke Chen wrote:
> I had "in this case" with the statement "the default can not be changed".
> The reason is that the behavior change may completely cutoff connectivity
> in this case.

And very soon after the cutoff a customer may elect to roll back the
change and read the release notes!

The 'complete cutoff' only occurs after a specific sequence of events
which together would represent a cascading failure in due diligence. 

Given that we've suffered through decennia of insecure behaviour on some
platforms, I'd be careful to weigh the cost of such a self-inflicted
'complete cutoff' against the cost on internet operations in general to
persist in the folly behaviour that some platforms present.

Kind regards,