The MPLS-OPS Archive

["alexb" <alexb@s3group.com.pl>]

Hi

IMHO if a table with MPLS labels on P router is addressed by received label
value than
it should be much faster then doing IP lookup on a IP search tree

alex

> 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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