[Nsi-wg] Fwd: Thoughts on a basic topology model for NSI

[Radek Krzywania]

Hi Jeroen,
Is there any way to see the results of your simulations and the chapter you wrote on aggregation? I would like to take a closer look on that issue, as this issue is something I was investigating some time ago and could not find a strong reason to claim one to be better than the other.

Best regards
Radek

________________________________________________________________________
Radoslaw Krzywania                      Network Research and Development
                                           Poznan Supercomputing and  
radek.krzywania at man.poznan.pl                   Networking Center
+48 61 858 20 28                             http://www.man.poznan.pl
________________________________________________________________________

> -----Original Message-----
> From: nsi-wg-bounces at ogf.org [mailto:nsi-wg-bounces at ogf.org] On Behalf
> Of Jeroen van der Ham
> Sent: Tuesday, February 09, 2010 6:23 PM
> To: John MacAuley
> Cc: nsi-wg at ogf.org
> Subject: Re: [Nsi-wg] Fwd: Thoughts on a basic topology model for NSI
> 
> On 09/02/2010 07:37, John MacAuley wrote:
> > 1. Aggregation and summarization.
> 
> I've done some simulations, analysis and have written a chapter about
> this in my thesis. My results show that aggregating a domain to a
> single
> node performs very badly compared to an aggregation model where you
> advertise a full mesh between edge nodes.
> I would also argue that the advantages of simplifying the internal
> domain do not balance the disadvantages you have in false positives in
> inter-domain pathfinding.
> 
> However, these simulations have only used a single layer. We're
> currently looking at pathfinding in multi-layer networks, and we're
> thinking about how to create aggregations for multiple layers. This is
> a
> hard problem.
> 
> Given the fact that current domains are not that complicated, and we
> have a very open culture in regards to information exchange, I would
> suggest that we leave the problem of aggregation open for now and just
> use full topologies.
> 
> Jeroen.
> _______________________________________________
> nsi-wg mailing list
> nsi-wg at ogf.org
> http://www.ogf.org/mailman/listinfo/nsi-wg