Re: [nsp] Mapping traffic into MPLS tunnels

From: Ravichander Vaidyanathan (vravi@research.telcordia.com)
Date: Wed May 22 2002 - 17:30:33 EDT


Thanks much for the responses. Is policy based routing supported on vrf
interfaces? My impression (at least a few IOS versions ago), was that it
was not...

Ravi

On Wed, 22 May 2002, Sean Crocker wrote:

> Eric,
>
> >> >Is there any other technique that allows one to have more control over the
> >> >traffic that can be mapped into an MPLS tunnel? (Say by specifying an
> >> >access list to map the traffic, or by using other IP header fields etc.?)
> >>
> >> Sure, policy based routing. You match packets based on
> >> criteria you define, then you "shunt" the matched packets
> >> across the LSP (out the Tunnel interface).
> >
> >you can also do forwarding-adjacency if you run ISIS; very similar to
> >autoroute, though, and doesn't really solve any additional problems.
>
> Definitely, although it should also be clarified that neither
> forwarding-adjacency nor autoroute matches packets on stuff
> like IP header fields, source addr, etc :-) ... and that
> "forwarding-adjacency" makes the LSP known as a link to all
> routers in the cloud (similar to juniper, which can also do it
> in OSPF), whereas autoroute just makes the LSP known only to
> the local routing instance.
>
> Sean
>
>



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