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RE: Numbering Exchange Protocol (NEP) ID.

Khaled Omar <eng.khaled.omar@hotmail.com> Tue, 12 December 2017 12:14 UTC

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From: Khaled Omar <eng.khaled.omar@hotmail.com>
To: Raymond Burkholder <ray@oneunified.net>
CC: "rtgwg@ietf.org" <rtgwg@ietf.org>
Subject: RE: Numbering Exchange Protocol (NEP) ID.
Thread-Topic: Numbering Exchange Protocol (NEP) ID.
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Date: Tue, 12 Dec 2017 12:14:04 +0000
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> Shortest path may no longer win, but the path established locally based upon global parameters provided by neighbors as well as a central authority.

NEP does not uses the shortest path, it learns full topology information and then decide which route (path) is the best at the moment based on the total route bandwidth, total route delay, and the no. of hops, there is no need for other protocols or a central authority. 

Best regards,

Khaled Omar

-----Original Message-----
From: rtgwg [mailto:rtgwg-bounces@ietf.org] On Behalf Of Raymond Burkholder
Sent: Tuesday, December 12, 2017 3:59 AM
To: rtgwg@ietf.org
Subject: Re: Numbering Exchange Protocol (NEP) ID.

On 12/11/2017 04:23 AM, Khaled Omar wrote:
>  > Yeah, these are not the people you are looking for. Talk to 
> operators, they will let you know how IGP metrics are useless in 
> today's networks, even the enhanced metrics you are proposing.
> 
> So what is the replacement for IGP metric if they are useless?
> 
> You mentioned as well other protocols, will be great to know more 
> about these protocols.

It isn't necessarily protocols any more.  It has more to do with how calculations are made.  They are starting to be made in centrally controlled distributed fashion (if that makes sense).  Look at min/max linear optimizations as a start where individual nodes make flow decisions based upon capacity available and bandwidth available not only locally, but on the path(s) towards the destination.  And the calculations may be made on a per flow or flow batch mechanism.

Shortest path may no longer win, but the path established locally based upon global parameters provided by neighbors as well as a central authority.

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