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RE: Fwd: basic question on MPLS

  • From: "Joe Lin" <jlin@doradosoftware.com>
  • Date: Tue, 26 Nov 2002 10:02:59 -0800
  • Cc: <rogerw@nordlink.com>, <mpls-ops@mplsrc.com>
  • Importance: Normal
  • Resent-Date: Tue, 26 Nov 2002 14:08:44 -0500
  • To: "'alok'" <alok.dube@apara.com>, <asimha@cisco.com>, <sthaug@nethelp.no>

Its about the same speed.

I was fortunate enough to able to run some tests a while back on both
Juniper and Cisco gear to seek the truth in MPLS's speed.


-----Original Message-----
From: alok [mailto:alok.dube@apara.com] 
Sent: Tuesday, November 26, 2002 2:12 AM
To: asimha@cisco.com; sthaug@nethelp.no
Cc: rogerw@nordlink.com; mpls-ops@mplsrc.com
Subject: Re: Fwd: [MPLS-OPS]: basic question on MPLS

Hi,

I guess it will be faster on the P router......

mainly coz now you dont switch on "destn IP " lookups on ur Forwarding
Table
(FT), u switch on labels...

and labels are 20 bit not 24 bit..

seperating signalling (routing) from forwarding does help..

its simple, is the router noticeably faster when you have a seperate
"FT"?
surely you cant dispute that.....

if yes..now comes features and scalability..RSVP-TE stuff to be done
(how
would you do it with only 8 queues in diffserv?)...
and how do you make "VPNs"?

so it has to be looked at not in terms of "raw switching" but "features
+
raw switching" being faster...

-rgds
Alok

----- Original Message -----
From: <sthaug@nethelp.no>
To: <asimha@cisco.com>
Cc: <rogerw@nordlink.com>; <mpls-ops@mplsrc.com>
Sent: Tuesday, November 26, 2002 3:12 PM
Subject: Re: Fwd: [MPLS-OPS]: basic question on MPLS


> > At least it is not noticeably faster :) And of course
> > imposition/disposition is in fact slower than plain IP. IMHO it is
> > the decoupling of forwarding and routing that allows apps like
> > TE/VPNs that makes MPLS more attractive.
>
> Agreed. I'm simply wondering why people are still talking about
> MPLS being faster when that is one of the *least* interesting
> things about MPLS *if it ever was true).
>
> We are using MPLS for the VPN capabilities.
>
> Steinar Haug, Nethelp consulting, sthaug@nethelp.no
>
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