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Re: [Anima-signaling] Unsolicited discovery [was GRASP issue 50: Rapid mode]

Brian E Carpenter <brian.e.carpenter@gmail.com> Tue, 02 August 2016 20:43 UTC

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To: Toerless Eckert <eckert@cisco.com>
References: <e5624787-ae82-5cfd-42e5-3c794950bb71@gmail.com> <20160801091940.GU21039@cisco.com> <ee4dbe41-2acd-1b3c-6c31-04c7183a9766@gmail.com> <20160802092513.GX21039@cisco.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Wed, 3 Aug 2016 08:43:32 +1200
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Cc: Anima signaling DT <anima-signaling@ietf.org>
Subject: Re: [Anima-signaling] Unsolicited discovery [was GRASP issue 50: Rapid mode]
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I'll be honest, I think Bing and I disagree about this. I see Rapid Mode
as a complication for quite a small gain in efficiency - there's actually
more to be gained by running GRASP over UDP instead of TCP, I think. So
I probably agree with you. But I think Bing sees more value in Rapid Mode
than we do.

    Brian

On 02/08/2016 21:25, Toerless Eckert wrote:
> Thats fine too. Can we walk through an example set of elements in such
> a message ?
> 
> Also: If we use Flood Synchronization, it sounds as if we would not need
> Rapid mode to make that work. In which case my other comment re. Rapid Mode
> might apply: unless we find a good example use-case within our existing or
> likely near term charter scope, maybe move Rapid mode down into an appendix ?
> 
> Cheers
>     Toerless
> 
> On Tue, Aug 02, 2016 at 05:18:53PM +1200, Brian E Carpenter wrote:
>> On 01/08/2016 21:19, Toerless Eckert wrote:
>>
>> ...
>>>
>>> - Aka: I could happily let go of rapid-mode for now in the general case
>>>   (move into appendix as "candidate extension"), and just figure out how
>>>   we can include unsolicited synchronization data into unsolicited discovery
>>>   messages.
>>
>> We theoretically had unsolicited discovery responses in the design for a while but
>> never worked out details. They vanished when we added Flood Synchronization
>> which is an unsolicited announcement. It sends an objective tagged with its source
>> address. It's pretty much the same thing you are asking for.
>>
>>     Brian
>

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