[Idr] Moving forward with draft-ietf-idr-bgp-ext-com-registry ExtCommunity Registry Cleanup

Christoph Loibl <c@tix.at> Wed, 03 February 2021 10:25 UTC

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Subject: [Idr] Moving forward with draft-ietf-idr-bgp-ext-com-registry ExtCommunity Registry Cleanup
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The state of draft-ietf-idr-bgp-ext-com-registry is unchanged since WG adoption. Are there any objections to move forward?

During WG adoption John Scudder noted that the suggested change of the registration procedure of the "BGP Transitive Extended Community Types" 0x80, 0x81, 0x82 from Experimental to FCFS may have issues, if there are any experimental implementations already using code points from this space [1]. 

There was a lot of feedback during WG adoption to John’s comment but no one actually responded with an example of such an experimental implementation using CP 0x80, 0x81, 0x82 nor do I remember any objections to the change. Is it save to assume that the suggested change to the registration procedure should remain in the draft?

I want to point out that these code-points have actual non experimental implementations in shipping products of all larger vendors. I think it has an advantage to “protect” these CPs from future experimental use.

Cheers Christoph

[1] https://mailarchive.ietf.org/arch/msg/idr/W7ykrmr3CqHOUU9vQotr5Cly8rQ/

> John Scudder <jgs@juniper.net> Mon, 29 June 2020 19:25 UTC

> I will note that it would be possible to carve out just the three mis-assigned code points without changing the registration procedures for the entire registry, i.e. we could leave the Experimental ranges as experimental, save for those three code points. However, as most of you know I’m not a big fan of Experimental for BGP protocol allocations, it doesn’t seem to be worth much, so I’m just as happy to see the change made. In any case, the WG should adopt the draft either way, since no matter what, the three code points in question should be clarified.
> I do want to raise one potential concern about the reclassification of the ranges: since Experimental is completely ungoverned (see 
> https://tools.ietf.org/html/rfc8126#section-4.2
> ), there could in theory be implementations in the field already using code points from this space. I think it’s not very likely that there ARE such, but there could be. (If someone knows of an example of one, they should say so right now of course.)

Christoph Loibl
c@tix.at | CL8-RIPE | PGP-Key-ID: 0x4B2C0055 | http://www.nextlayer.at