Maybe I am way off base here, but here is what I am trying to do:
We have a co0location site that hosts our web sites, and we run a fiber connection between HQ and the co-location. We can use the public handoff at the co-location for a backup internet connection from corp HQ. What I have done so far is set up a tunnel between HQ and the co-location, and that is working just fine. Now here is where I need some help. In the switch at the co-location, I have a seperate vlan set up for the public handoff to the co-lo POP. Right now there is a vlan interface for that vlan, but it has no IP address assigned. In order for my tunnel to work, I will need an IP address. My question is, can I use a private IP address for that vlan without screwing anything up, or will I have to use one of my publically assigned IP addresses?