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)
Jeffrey Haas <jhaas@pfrc.org> Tue, 18 October 2016 16:28 UTC
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From: Jeffrey Haas <jhaas@pfrc.org>
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Date: Tue, 18 Oct 2016 12:28:09 -0400
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To: Nick Hilliard <nick@foobar.org>
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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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Nick (and others), > On Oct 18, 2016, at 12:05 PM, Nick Hilliard <nick@foobar.org> wrote: > There is an objective problem here, namely that there is no > vendor-specific range for path attributes. Given the nature of path > attribute interpretation, it could be argued that this might be a good > thing because different vendors will interpret TLVs in different ways, > which is a potential source of bgp session instability. On the other > hand, it means that if vendors need to go off and do something new, > there are no options other than squatting. A vendor-specific range will > at least contain this problem, so that IANA won't run into the same > problem in future. FWIW, there's a lot of discussion related to this in the RFC 5226 bis related discussions. Part of the issue with vendor space for standards features has to do with renumbering issues. A short summary of the prior discussions: - Vendor space makes it easy to prototype. - Once you get a feature beyond a certain point, if there was a particular first mover, one basically is forced into using that vendor's space. That makes some implementors uncomfortable because it's under the control of that party. - There's no strong incentive and several disincentives to renumber feature code points. Historical example in BGP-land, why SAFI 128 is used for BGP VPNs. I believe the bigger discussion is how you handle early code point allocation and, more importantly, versioning features as development continues. > On a related issue, it would probably be a good idea to run beacon tests > with other path attributes to see how they affect reachability, i.e. > have any other vendors squatted any other path attribute values, and if > large-communities is moved to 31 or 32, will it suffer the same problem? Even passive monitoring is a good start. -- Jeff
- [Idr] BGP Attribute for Large communities (Attrib… Susan Hares
- Re: [Idr] BGP Attribute for Large communities (At… Jeffrey Haas
- Re: [Idr] BGP Attribute for Large communities (At… Job Snijders
- Re: [Idr] BGP Attribute for Large communities (At… Job Snijders
- Re: [Idr] BGP Attribute for Large communities (At… Jeffrey Haas
- Re: [Idr] BGP Attribute for Large communities (At… bruno.decraene
- Re: [Idr] BGP Attribute for Large communities (At… Michael H Lambert
- Re: [Idr] BGP Attribute for Large communities (At… Jared Mauch
- Re: [Idr] BGP Attribute for Large communities (At… John G. Scudder
- Re: [Idr] BGP Attribute for Large communities (At… Job Snijders
- Re: [Idr] BGP Attribute for Large communities (At… Kristian Larsson
- Re: [Idr] BGP Attribute for Large communities (At… Dickinson, Ian
- Re: [Idr] BGP Attribute for Large communities (At… Julian Seifert
- Re: [Idr] BGP Attribute for Large communities (At… Peter Hessler
- Re: [Idr] BGP Attribute for Large communities (At… Nick Hilliard
- Re: [Idr] BGP Attribute for Large communities (At… Jeffrey Haas
- Re: [Idr] BGP Attribute for Large communities (At… John G. Scudder
- [Idr] Early allocation for wide communities [was:… John G. Scudder
- Re: [Idr] BGP Attribute for Large communities (At… Susan Hares
- [Idr] Unknown Attributes seen in the wild Peter Hessler
- Re: [Idr] BGP Attribute for Large communities (At… Susan Hares
- Re: [Idr] BGP Attribute for Large communities (At… Wesley George
- Re: [Idr] Early allocation for wide communities [… Susan Hares
- Re: [Idr] Early allocation for wide communities [… Susan Hares
- Re: [Idr] Unknown Attributes seen in the wild Susan Hares
- Re: [Idr] Unknown Attributes seen in the wild Jared Mauch
- Re: [Idr] Unknown Attributes seen in the wild 'Peter Hessler'
- Re: [Idr] BGP Attribute for Large communities (At… Job Snijders
- Re: [Idr] Early allocation for wide communities [… Job Snijders
- Re: [Idr] BGP Attribute for Large communities (At… Robert Raszuk
- Re: [Idr] Unknown Attributes seen in the wild Susan Hares
- Re: [Idr] Early allocation for wide communities [… Jakob Heitz (jheitz)
- Re: [Idr] Early allocation for wide communities [… Jeffrey Haas
- Re: [Idr] Early allocation for wide communities [… Job Snijders
- Re: [Idr] BGP Attribute for Large communities (At… Jeffrey Haas
- Re: [Idr] BGP Attribute for Large communities (At… Robert Raszuk
- Re: [Idr] BGP Attribute for Large communities (At… Susan Hares
- Re: [Idr] BGP Attribute for Large communities (At… Susan Hares
- Re: [Idr] BGP Attribute for Large communities (At… marco
- Re: [Idr] BGP Attribute for Large communities (At… marco
- Re: [Idr] BGP Attribute for Large communities (At… Geoff Huston
- Re: [Idr] BGP Attribute for Large communities (At… t.petch
- Re: [Idr] BGP Attribute for Large communities (At… John G. Scudder
- Re: [Idr] Unknown Attributes seen in the wild Paul Jakma
- [Idr] BGP Attribute for Large communities (Attrib… Susan Hares
- Re: [Idr] BGP Attribute for Large communities (At… Alvaro Retana (aretana)
- Re: [Idr] BGP Attribute for Large communities (At… Susan Hares
- Re: [Idr] BGP Attribute for Large communities (At… Jakob Heitz (jheitz)
- Re: [Idr] BGP Attribute for Large communities (At… Christopher Morrow
- Re: [Idr] BGP Attribute for Large communities (At… Mikael Abrahamsson
- Re: [Idr] BGP Attribute for Large communities (At… Christopher Morrow
- Re: [Idr] BGP Attribute for Large communities (At… Randy Bush
- Re: [Idr] BGP Attribute for Large communities (At… Christopher Morrow
- Re: [Idr] BGP Attribute for Large communities (At… Jakob Heitz (jheitz)
- Re: [Idr] BGP Attribute for Large communities (At… Brian Dickson
- Re: [Idr] BGP Attribute for Large communities (At… Christopher Morrow
- Re: [Idr] BGP Attribute for Large communities (At… heasley
- Re: [Idr] BGP Attribute for Large communities (At… Jakob Heitz (jheitz)
- Re: [Idr] BGP Attribute for Large communities (At… Job Snijders
- Re: [Idr] BGP Attribute for Large communities (At… heasley
- Re: [Idr] BGP Attribute for Large communities (At… marco
- Re: [Idr] BGP Attribute for Large communities (At… Sander Steffann
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Job Snijders
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Mikael Abrahamsson
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Sander Steffann
- Re: [Idr] Squatters (Was: BGP Attribute for Large… marco
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Job Snijders
- Re: [Idr] Squatters (Was: BGP Attribute for Large… t.petch
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Acee Lindem (acee)
- Re: [Idr] Squatters (Was: BGP Attribute for Large… marco
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Brian Dickson
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Job Snijders
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Randy Bush
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Job Snijders
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Thomas Mangin
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Mikael Abrahamsson
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Job Snijders
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Job Snijders
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Nick Hilliard
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Jeffrey Haas
- Re: [Idr] Squatters (Was: BGP Attribute for Large… John G. Scudder
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Job Snijders
- Re: [Idr] Squatters (Was: BGP Attribute for Large… John G. Scudder
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Thomas Mangin
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Jakob Heitz (jheitz)
- Re: [Idr] Squatters (Was: BGP Attribute for Large… heasley
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Brian Dickson
- Re: [Idr] Squatters (Was: BGP Attribute for Large… Jakob Heitz (jheitz)
- Re: [Idr] Squatters (Was: BGP Attribute for Large… marco
- Re: [Idr] Unknown Attributes seen in the wild Colin Petrie
- Re: [Idr] Unknown Attributes seen in the wild Robert Raszuk
- Re: [Idr] Unknown Attributes seen in the wild Job Snijders
- Re: [Idr] Unknown Attributes seen in the wild Robert Raszuk
- Re: [Idr] Unknown Attributes seen in the wild Colin Petrie
- Re: [Idr] Unknown Attributes seen in the wild Jakob Heitz (jheitz)
- Re: [Idr] Unknown Attributes seen in the wild Robert Raszuk
- Re: [Idr] Unknown Attributes seen in the wild Jakob Heitz (jheitz)
- Re: [Idr] Unknown Attributes seen in the wild Robert Raszuk
- Re: [Idr] Unknown Attributes seen in the wild Jakob Heitz (jheitz)
- Re: [Idr] Unknown Attributes seen in the wild Jakob Heitz (jheitz)
- Re: [Idr] BGP Attribute for Large communities (At… Zhuangshunwan