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Re: [Idr] BGP Attribute for Large communities (Attribute 30) was squatted on - Let's get a new attribute number (1 week WG call (10/18 to 10/25)

"Susan Hares" <shares@ndzh.com> Tue, 18 October 2016 17:16 UTC

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From: Susan Hares <shares@ndzh.com>
To: 'Jeffrey Haas' <jhaas@pfrc.org>
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Date: Tue, 18 Oct 2016 13:14:21 -0400
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Cc: 'IETF IDR WG' <idr@ietf.org>, 'Kristian Larsson' <kll@dev.terastrm.net>
Subject: Re: [Idr] BGP Attribute for Large communities (Attribute 30) was squatted on - Let's get a new attribute number (1 week WG call (10/18 to 10/25)
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Jeff: 

 

This is a good idea to just make 129 an early allocation for wide communities. 

 

Sue 

 

From: Jeffrey Haas [mailto:jhaas@pfrc.org] 
Sent: Tuesday, October 18, 2016 11:19 AM
To: Sue Hares
Cc: IETF IDR WG; Kristian Larsson
Subject: Re: [Idr] BGP Attribute for Large communities (Attribute 30) was squatted on - Let's get a new attribute number (1 week WG call (10/18 to 10/25)

 

Sue,

 

If 129 is not otherwise contended for, it may be reasonable to simply request early allocation for the wide communities code point.

 

-- Jeff

 

On Oct 18, 2016, at 11:01 AM, Susan Hares <shares@ndzh.com> wrote:

 

WG: 

 

Early testing of the Large Communities draft (draft-ietf-idr-large-community-03.txt)  with attribute value of 30 detect that we had an implementation squatting on attribute 30 by a Huawei router.   “Squatting” on an attribute is anti-social behavior in the Internet in any release of software.  

 

The individuals who did in Huawei have been contacted by Jie Dong, and “asked” if they had made this mistake in any other attribute.   These individuals confessed to Attribute 129 (for wide communities).  These individuals apologize to the Working group.  

 

Now what shall we do? The large community draft is critical for several networks. After talking with the developers and operators, John and I would like to recommend we do the following: 

 

IDR should recommend that the following attribute numbers be deprecated:  

 

BGP Attribute 30 

BGP attribute 129 

 

IDR should ask IANA to assign BGP Large Communities (currently Attribute 30) to a new attribute number.  This is a 1 week call to determine if the IDR approves this action.   This call will allow the large communities draft to still continue with the 2 week WG LC.  

 

John, Alvaro, and I have check the early allocation rules.  Implementations should ask for early allocation prior to releasing, and they do not need to be interoperability testing to request the early allocation for the attribute. 

 

Sue Hares 

 

 

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