Re: [Idr] Squatters (Was: BGP Attribute for Large communities (Attribute 30) was squatted on..)

"Jakob Heitz (jheitz)" <jheitz@cisco.com> Fri, 28 October 2016 16:41 UTC

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From: "Jakob Heitz (jheitz)" <jheitz@cisco.com>
To: Thomas Mangin <thomas.mangin@exa.net.uk>, "swmike@swm.pp.se" <swmike@swm.pp.se>
Thread-Topic: [Idr] Squatters (Was: BGP Attribute for Large communities (Attribute 30) was squatted on..)
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Date: Fri, 28 Oct 2016 16:41:46 +0000
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Cc: heasley <heas@shrubbery.net>, IETF IDR <idr@ietf.org>, Susan Hares <shares@ndzh.com>
Subject: Re: [Idr] Squatters (Was: BGP Attribute for Large communities (Attribute 30) was squatted on..)
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If they are optional transitive, then they should be treated like any other optional transitive attributes.

Many BGP implementations have a way to configure attribute filtering.
In IOS-XR, you configure an "attribute-filter group" and then apply it in "update in filtering".

Thanks,
Jakob.


> -----Original Message-----
> From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Thomas Mangin
> Sent: Friday, October 28, 2016 8:36 AM
> To: swmike@swm.pp.se
> Cc: heasley <heas@shrubbery.net>; IETF IDR <idr@ietf.org>; Susan Hares <shares@ndzh.com>
> Subject: Re: [Idr] Squatters (Was: BGP Attribute for Large communities (Attribute 30) was squatted on..)
> 
> 
> > On 28 Oct 2016, at 14:05, Mikael Abrahamsson <swmike@swm.pp.se> wrote:
> >
> > On Fri, 28 Oct 2016, Thomas Mangin wrote:
> >
> >> So... Should it recommend treat as withdraw if seen in the wild wild DFZ ?
> >
> > What's the benefit of that? Why make these codepoints unusable forever?
> 
> Yes, make sure that they are not uselessly carried on the DFZ.
> I can see the argument for ‘doing nothing’ tho.
> 
> Thomas
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