Re: [Idr] Error handling in draft-ietf-idr-dynamic-cap-10.txt

Enke Chen <enkechen@cisco.com> Wed, 24 February 2010 00:03 UTC

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Date: Tue, 23 Feb 2010 16:06:00 -0800
From: Enke Chen <enkechen@cisco.com>
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To: Ilya Varlashkin <Ilya.Varlashkin@de.easynet.net>
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Subject: Re: [Idr] Error handling in draft-ietf-idr-dynamic-cap-10.txt
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Hi, ILya:

As withdrawing a capability that was not advertised previously does not 
have any practical impact, we can specify that the capability revision 
should be ignored in that case.

Thanks.   -- Enke


On 2/1/10 2:00 AM, Ilya Varlashkin wrote:
> Hi,
>
> although draft-ietf-idr-dynamic-cap-10 contains some guidelines for
> error handling, there is still possibility for having two conformant but
> different implementations. Consider initiator of capability update
> message requests removal (Action bit set to 1) of a capability, which
> was not previously advertised. Current draft leaves it up to receiver
> implementation to decide either to silently ignore such capability or to
> send notification back to originator. Shouldn't behaviour in this
> situation be explicitly defined as to avoid ambiguity? I think ideally
> receiver of such confusing message should send undistruptive feedback,
> but that would require implementation of not-yet-standardized
> draft-ietf-idr-advisory. What's WG opinion on this?
>
> Kind regards,
> iLya
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