[Nsi-wg] Immediate/Advance reservation (Re: NSI conf call minutes)

[Tomohiro Kudoh]

Hi all,

To keep the v1.0 architecture simple, I propose to not to use the
immediate reservation in v1.0. Instead, I propose to define guard time,
and use it as follows:

- The "guard time" is: possible maximum time required to process a
request and make resources ready for provisioning.

- Each provider NSA must define its guard time and provide it to
requester NSAs. 

- A requester NSA should not request a reservation which start time is
smaller (earlier) than (current time + guard time). Time required for
message delivery should be taken into account too. 

- If a provider NSA receives a reservation request which start time is
before (current time + guard time), it simply denies the request. 

If a requester wants resources to be provisioned as soon as possible, it
can set the start time parameter in a advance request to:
(current time + guard time + a certain time required for message
delivery).

In this way, immediate provisioning can be requested by an advance
reservation request.

Tomohiro

On Thu, 1 Apr 2010 14:54:15 +0100
Guy Roberts <Guy.Roberts at dante.net> wrote:

> The minutes for yesterday's conference call are available here:
> 
> http://forge.gridforum.org/sf/go/doc15952?nav=1
> 
> Guy
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> Guy  Roberts,  Ph.D
> 
> Network Engineering & Planning
> DANTE - www.dante.net<http://www.dante.net/>
> Tel: +44 (0)1223 371 316
> City House, 126-130 Hills Road
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