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

Enke Chen <enkechen@cisco.com> Thu, 20 April 2017 17:08 UTC

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To: Job Snijders <job@ntt.net>
References: <D4E812E8-AA7B-4EA2-A0AC-034AA8922306@juniper.net> <abe393d3-d1e4-7841-4620-38dab751765b@cisco.com> <68B29403-9AD9-4F06-9FE4-3F077E793D9F@puck.nether.net> <275cf744-1f64-bcbc-dabe-a47479921230@cisco.com> <20170420154142.lacvtplusepy3qcf@hanna.meerval.net> <b57162ec-f806-6e86-7713-58608f72c468@cisco.com> <20170420164314.av26kcxvxglg4oet@hanna.meerval.net> <3b681e50-bf6d-df75-eb61-86be79a2fbb8@cisco.com> <20170420165757.safd32x2xu5awwxp@hanna.meerval.net>
Cc: idr@ietf.org, Hares Susan <shares@ndzh.com>, Enke Chen <enkechen@cisco.com>
From: Enke Chen <enkechen@cisco.com>
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Date: Thu, 20 Apr 2017 10:08:50 -0700
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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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Job,

I have nothing new to add :-(

Regards,  -- Enke

On 4/20/17 9:57 AM, Job Snijders wrote:
> On Thu, Apr 20, 2017 at 09:50:53AM -0700, Enke Chen wrote:
>> My personal opinion:
>>
>> Vendors are *not* in the business of intentionally creating network outages :-)
>> Those that do may not stay in the business for long :-)
> 
> You could also argue, that by not implementing the bgp-reject guidance,
> a vendor intentionally creates outages which result from inadvertent
> propagation of full routing tables.
> 
> If a vendor implements bgp-reject, the customers enjoy mitigation of the
> risk of hitting the timer penalty on a 'maximum prefix reached'
> shutdown, or perhaps someone configured their router to not
> automatically re-enable the session after maximum-prefix is hit, in this
> case the outage prolongs.
> 
> If you are committed to preventing outages, implementing bgp-reject
> seems the right thing to do.
> 
> Kind regards,
> 
> Job
>