[c-nsp] routing between VRF and global

[Tim Durack]

On Thu, Aug 5, 2010 at 11:54 AM, Kenny Sallee <kenny.sallee at gmail.com> wrote:
> This is a pretty cool config, but I'm having a hard time seeing why you'd
> want to do this?  Why not just route-target import/export between VRF's you
> want to share routes with?  And use import-maps to filter as necessary?
>
> I did the same type of thing - but instead of a global route table I have
> the 'global' table in a VRF so I can RT import/export what I need to it to
> and from it.  In the global VRF is a BGP session with our core network.
>  Keeps the config simple.  Granted - what I'm doing where I work might be
> smaller scale then some - but I believe this config would scale pretty far
> (and is not a hack).

The tricky part is taking an existing global table network and
migrating it into vrfs (without too many people noticing.) We went
with physical loopback cables and vlan translation to connect global
to vrf during the (still ongoing) migration.

-- 
Tim:>