Re: [Idr] WG LC on draft-ietf-idr-large-community-03.txt (10/17/2016 to 10/31/2016)

"Jakob Heitz (jheitz)" <jheitz@cisco.com> Thu, 20 October 2016 23:06 UTC

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From: "Jakob Heitz (jheitz)" <jheitz@cisco.com>
To: Job Snijders <job@ntt.net>
Thread-Topic: [Idr] WG LC on draft-ietf-idr-large-community-03.txt (10/17/2016 to 10/31/2016)
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Date: Thu, 20 Oct 2016 23:06:20 +0000
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References: <01f301d228b4$e3319ef0$a994dcd0$@ndzh.com> <20161017215134.GA464@pfrc.org> <20161018190851.GC15392@shrubbery.net> <20161018191521.GT95811@Vurt.local> <9EFC9BAA-F917-4C70-A139-1F69CAECF9C0@pfrc.org> <20161020215938.GE1074@Vurt.local> <adb00bcd7b8e45db857eae7019c646fc@XCH-ALN-014.cisco.com> <20161020225004.GG1074@Vurt.local>
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Cc: heasley <heas@shrubbery.net>, Sue Hares <shares@ndzh.com>, IETF IDR WG <idr@ietf.org>
Subject: Re: [Idr] WG LC on draft-ietf-idr-large-community-03.txt (10/17/2016 to 10/31/2016)
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Evidently, it wasn't clear. Now it is.

Thanks,
Jakob.


> -----Original Message-----
> From: Job Snijders [mailto:job@ntt.net]
> Sent: Thursday, October 20, 2016 3:50 PM
> To: Jakob Heitz (jheitz) <jheitz@cisco.com>;
> Cc: Jeffrey Haas <jhaas@pfrc.org>;; heasley <heas@shrubbery.net>;; IETF IDR WG <idr@ietf.org>;; Sue Hares
> <shares@ndzh.com>;
> Subject: Re: [Idr] WG LC on draft-ietf-idr-large-community-03.txt (10/17/2016 to 10/31/2016)
> 
> Hi Jakob,
> 
> I am not sure what issue this replacement resolves. With the replacement
> text in the document I feel I have more questions than answers.
> 
> Usually a community is intended to be sent to one AS to trigger an
> action, and to multiple ASes if the community is of informative nature.
> We know we can attach multiple Large BGP Communities to a route, because
> of the variable length of the attribute.
> 
> In an earlier response I pointed at text that addresses this specific
> feature already in the current text: https://mailarchive.ietf.org/arch/msg/idr/_QULjIUDaBB4JqDR8IXuIYkAVJw
> 
> Kind regards,
> 
> Job
> 
> 
> On Thu, Oct 20, 2016 at 10:13:41PM +0000, Jakob Heitz (jheitz) wrote:
> > In addition, to deal with the values for the GA field, we will replace
> >
> >    The Global Administrator field is intended to allow different
> >    Autonomous Systems to define Large BGP Communities without collision.
> >
> > with
> >
> >   A Large Community that is intended to be sent to multiple ASes
> >   SHOULD contain an ASN in the Global Administrator field. The ASN
> >   SHOULD be one that is assigned to the entity that defines the
> >   meaning of the rest of the Large Community.  This allows a route to
> >   carry multiple Large Communities, the meaning of each being defined
> >   by different independent entities.