[e2e] [ippm] [Fwd: State of MPLS deployments today]

[Robert Raszuk]

Kava,

> first of all I should mention that MPLS deployment is far from being done (I
> don't think that it has been deployed even in a large network operator) and
> I largely suspect that it will never be deployed in a large scale to be the
> primary backbone technology !!!!

Would you mind sharing with me your definition of "large network
operator" ? For me operators like ATT, BT, DT, FT, TI, Level3, Worldcom,
JT, KDDI and many many more are of the size I would considered as
"large" on this planet. 

All of them are using MPLS and MPLS applications in their backbones. 

Only a very few IP purists who get high blood pressure when one next to
them says MPLS don't use it and that is also absolutely fine. 

Just one more comment:

MPLS was never intended to boost network performance but to offer a new
paradigm for various applications which benefit from not pure
traditional dst based lookup at each hop. Sure IP can emulate it as well
with tunnels, but it is obvious that in this case, when talking about
production deployements IP is catching up with applications already
offered by MPLS today in a scalable way.

Rgs,
R.



> From: Kavé Salamatian <salamat at rp.lip6.fr>
> To: Shen Jing <jshen_cad at yahoo.com.cn>, end2end-interest at postel.org
> Cc: ippm at advanced.org
> Subject: RE: [ippm] [e2e] Mathematical analysis of e2e lable switching path
> Date: 03 Oct 2002 09:56:39 +0200
> 
> Dear Shen,
> 
> first of all I should mention that MPLS deployment is far from being done (I
> don't think that it has been deployed even in a large network operator) and
> I largely suspect that it will never be deployed in a large scale to be the
> primary backbone technology !!!!
> 
> >From the point of view of measurement, LSP networks should not have too much
> difference from traditional IP networks as nowadays IP routing performance
> is getting very  close to Label switching performance, meaning that the
> delay of crossing an LSP network should not be significantly larger than an
> IP network. The difference may come from a simpler  traffic engineering in
> MPLS. Meaning that we should evaluate the effect of traffic engineeringon
> performance, not the particuliar behaviour of MPLS network.
> 
> Bests
> 
> Kv
> -----Message d'origine-----
> De?: ippm-admin at advanced.org [mailto:ippm-admin at advanced.org]De la part de
> Shen Jing
> Envoyé?: dimanche 29 septembre 2002 04:28
> Ã ?: end2end-interest at postel.org
> Cc?: ippm at advanced.org
> Objet?: [ippm] [e2e] Mathematical analysis of e2e lable switching path
> 
> 
> Hi there,
> 
> I've some question on e2e performance analysis of
> label switching path.
> 
> There has been many research on e2e performance
> analysis for IP routing. Nearly all of them take the
> model of "network of queue", and under assumpiton of
> Possion Arrival, exponential flow size etc. To my
> limited knowledge, this is not to the state of
> Internet which experiences LRD. On the other hand,
> different router archtecture must have different
> effect on transmission performance.
> As MPLS proceeds to be the primary backbone
> technology, I think there must be something new
> introduced into the e2e performance in internet.
> 
> So, I want to know, whether there is some work with
> methematical modeling of LSP networks? and, are there
> anyone would do me a favor to recommend some refrence
> book, web page, research paper or the like ?
> 
> Thank you very much.
> 
> Best regards
> 
> 
> =====
> Jing Shen
> 
> State Key Lab of CAD&CG
> ZheJiang University(YuQuan)
> HangZhou, ZheJiang Province 310027
> P.R.China
> 
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