[c-nsp] VRF-lite to do L3 passthru

[Jeff Kell]

Jeff Bacon wrote:
> is it really that simple? Will VRF-lite work without actually using BGP
> or MPLS? Are there docs somewhere in the Cisco spiderweb which are
> clearer on the topic than the ones which are part of the SX doc train?

As others have pointed out, yes, it really is that simple.   But there 
are a few "show-stoppers" you may experience...

* You own the transport... so you can trunk the VRF from point A to 
point B,
* The transport doesn't depend on your existing L3 mesh (else you have 
to tunnel),
* You don't need any "leakage" between

Doing "leakage" requires BGP, if only a local instance where you do 
inter-vrf routing.  This is (my opinion) the missing bit of the 
documentation.  The VRF definitions with the "import/export 
route-target" declarations only work if BGP is up and running on the 
same node.

Jeff