Re: [Idr] [Re: Idr] I-D Action: draft-ietf-idr-bgp-extended-messages-31.txt

Alvaro Retana <aretana.ietf@gmail.com> Tue, 02 July 2019 13:34 UTC

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From: Alvaro Retana <aretana.ietf@gmail.com>
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References: <FDAC847D-60A2-4571-99CF-50458AC0E159@cisco.com> <m21rz9xn46.wl-randy@psg.com> <F41665B6-DD53-42F5-AD1D-F828C215809B@cisco.com>
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To: "Enke Chen (enkechen)" <enkechen@cisco.com>, Randy Bush <randy@psg.com>
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Subject: Re: [Idr] [Re: Idr] I-D Action: draft-ietf-idr-bgp-extended-messages-31.txt
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On July 1, 2019 at 11:39:39 PM, Enke Chen (enkechen) (enkechen@cisco.com)
wrote:

Enke:

Hi!

Were there any specific issues for the capability to be unidirectional?
It's not
clear to me how requiring the capability to be bidirectional would help.


rfc5492 says this: "Simply put, a given capability can be used on a peering
if that capability has been advertised by both peers.  If either peer has
not advertised it, the capability cannot be used.”

IOW, it is not so much that the meaning can’t be something else…but that
this is how it was designed.

Alvaro.