* Baldur Norddahl
I did not say we were doing internet peering...
Uhm. When you say that you peer with another ISP (and keep in mind what the "I" in ISP stands for), while giving no further details, then folks are going to assume that you're talking about a standard eBGP peering with inet/inet6 unicast NLRIs.
In case you are wondering, we are actually running L2VPN tunnels over MPLS.
Okay. Well, I see no reason why using GRE tunnels for this purpose shouldn't work, it does for us (using mostly VPLS and Martini tunnels). That said, I've never tried extending our MPLS backbone outside of our own administrative domain or autonomous system. That sounds like a really scary prospect to me, but I'll admit I've never given serious consideration to such an arrangement before. Hopefully you know what you're doing. Tore