[c-nsp] routing between VRF and global

[Daniska Tomas]

multicast, perhaps?

or there are cases where you just need an interface to apply something to, such as an ACL, PBR...


(sorry for not indenting and replying inline, the message came in html and outlook is pretty dumb in switching back to plaintext)

--

deejay


From: Kenny Sallee [mailto:kenny.sallee at gmail.com] 
Sent: Thursday, August 05, 2010 5:55 PM
To: Daniska Tomas
Cc: Chris Mason; Jeff Bacon; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] routing between VRF and global


> The tunnel source and destination are between different loopbacks
> within the global table, but one end of the tunnel is within the
> global and one end within the VRF table. You might be able to NAT
> across the GRE tunnel.

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).