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Re: [Idr] Routing Directorate Review for draft-ietf-idr-wide-bgp-communities-07 - BGP Community Container

"Acee Lindem (acee)" <acee@cisco.com> Mon, 11 July 2022 23:05 UTC

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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Robert Raszuk <robert@raszuk.net>
CC: Jeffrey Haas <jhaas@pfrc.org>, "draft-ietf-idr-wide-bgp-communities@ietf.org" <draft-ietf-idr-wide-bgp-communities@ietf.org>, IDR List <idr@ietf.org>, Routing Directorate <rtg-dir@ietf.org>
Thread-Topic: [Idr] Routing Directorate Review for draft-ietf-idr-wide-bgp-communities-07 - BGP Community Container
Thread-Index: AQHYkwUEwXB9pI+vVU+y5xzSJkrEAq1405kAgABEYoD//79NgIAAV6iA///ChQCAAKk8gP//2D6AAAj1yQD//899gIAARIyA//+9jAA=
Date: Mon, 11 Jul 2022 23:05:00 +0000
Message-ID: <2296E118-CE99-4012-A651-6B37B4FE1C1A@cisco.com>
References: <31784442-7A03-46E2-B255-7D7FF46FD88F@cisco.com> <20220708195701.GB29763@pfrc.org> <E109F29A-8701-443E-BCFA-14A370E6B736@cisco.com> <CAOj+MMGXCZ674h=XuF0AqV4o0n+-wBVzfpLuihGcQh7VOktaew@mail.gmail.com> <E094DB91-02E5-4C33-82EB-CB3995521589@cisco.com> <CAOj+MMExYuXfPAjkZkgdTFPPfuMNPxFXtO0inUgZKZetCzbU=g@mail.gmail.com> <52B1B5E4-ABF6-40DC-8BD4-875A613B8068@cisco.com> <8826B995-4044-4706-9165-2A10C6271315@pfrc.org> <B2F48483-F7B7-4FD0-A423-66FFA94B761E@cisco.com> <CAOj+MMFnTq5PYqgjncS7LfiQAceF3Cry7UTMtK5jK_hYpV137Q@mail.gmail.com> <5987EC71-2972-4F5A-AC43-30F844DAC315@cisco.com> <CAOj+MMGqK_udrtC4+Gk0c2mjG43RDJwCv6P=bJy1chxG78WLPQ@mail.gmail.com>
In-Reply-To: <CAOj+MMGqK_udrtC4+Gk0c2mjG43RDJwCv6P=bJy1chxG78WLPQ@mail.gmail.com>
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Subject: Re: [Idr] Routing Directorate Review for draft-ietf-idr-wide-bgp-communities-07 - BGP Community Container
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From: Robert Raszuk <robert@raszuk.net>
Date: Monday, July 11, 2022 at 7:03 PM
To: Acee Lindem <acee@cisco.com>
Cc: Jeff Haas <jhaas@pfrc.org>, "draft-ietf-idr-wide-bgp-communities@ietf.org" <draft-ietf-idr-wide-bgp-communities@ietf.org>, IDR List <idr@ietf.org>, Routing Directorate <rtg-dir@ietf.org>
Subject: Re: [Idr] Routing Directorate Review for draft-ietf-idr-wide-bgp-communities-07 - BGP Community Container

Hi Acee,

Yes – so a wide community known by the receiving speaker with an unknown/undefined atom for that community will be treated the same as an unknown wide community. Is that right?

In the context of 4.4.2 yes. For 4.4.1 as we discussed no. So yes or no depending on the sub-type.

   The U-bit indicates how the LSA should be handled by a router that
   does not recognize the LSA's function code.  Its values are:

But isn't this directly comparable to the notion of transitiveness of attributes in BGP ?

Yes and I believe every new OSPFv3 LSA we’ve defined is transitive.

Thanks,
Acee

Many thx,
R.

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