The MPLS WG Archive

[Sudheer Dharanikota <sudheer@nayna.com>]

Good that there are routers who does the 5 tuple lookup 
for 1 million connections at line rate of OC-48 :-)
But do we need them in the core?

- sudheer

Bora Akyol wrote:
> 
> I would not jump on this so fast, there is at least one router out there that can
> do line rate 5-tuple lookups for many, many rules.
> 
> Just because **you** don't know how to do it, doesn't mean it can't be done.
> 
> Bora
> 
> Sudheer Dharanikota wrote:
> 
> > Yes sir.. you are missing many things.
> >
> > TE is mainly used for core. In core nobody in right mind
> > will do 5 tuple lookup on the the Ip packet :-)
> >
> > - sudheer
> >
> > Rajeev Manur wrote:
> > >
> > > see below...
> > >
> > > -----Original Message-----
> > > From: Sudheer Dharanikota [mailto:sudheer@nayna.com]
> > > Sent: Thursday, October 19, 2000 7:21 AM
> > > To: Mike Badil
> > > Cc: mpls@UU.NET
> > > Subject: Re: Traffic engineering and RSVP
> > >
> > > Mike Badil wrote:
> > > >
> > > > Hi
> > > >
> > > > I confused  when I read traffic engineering with MPLS.
> > > >
> > > > My question is:
> > > >
> > > > MPLS is combination of layer 2 swithing and layer 3 routing. Traffic eng.
> > > is
> > > > part of layer 3. In MPLS route(LSP) is established in advance according to
> > > > the constraints. in other word, instead of choosing shortest path, it
> > > choose
> > > > the path which satisfy its requirments, and to make link utulization
> > > better.
> > > > In order to have done this with MPLS there are some works which say that
> > > > OSPF,IS-IS can be modified by adding constraint to it.
> > > >
> > > > That is clear so far,
> > > >
> > > > I wondering that whether we can have those traffic engineering conditions
> > > be
> > > > satisfied by other tech.
> > > >
> > > > For example; RSVP-Intserv set up route in advance also. If we use extended
> > > > OSPF,IS-IS etc.algorithm with Intserv-RSVP as we use in MPLS,
> > > > we can choose the path which satisfy our constraints instead of choosing
> > > > Shortest path. Link load balancing can be done as in MPLS. So most of
> > > > traffic engineering requirements will be satisfied.(let don't consider
> > > > scalibility problem with RSVP now). Or it can work any other technology
> > > > which use RSVP.
> > > >
> > >
> > > The problem is in applying filter at every node to make sure your IP
> > > packet
> > > is following the selected path. Hence data path becomes slow.
> > >
> > > RAJEEV> I thought almost all the boxes today perform complete packet
> > > processing at line-rate with or without the application of packet filters. I
> > > don't see the relevence of the above statment. Am i missing anything..
> > >
> > > - sudheer
> > >
> > > > What am I missing here?
> > > >
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