Colo Active / Passive or Bridged mode question

[TBom]

Hi,

I've got a PFSense going in to a colocation environment and I've got the following options for the connectivity. They provide 2 network connections in with the idea being network A and B as a fail over type situation. I've got the following options but I'm not 100% sure which to go for.

1. An 802.3ad bonded link with no routing, e.g. layer 2 . Our router would be the gateway for the range.
2. As (1) but instead of 802.3ad, we use an Active/Passive link with RSTP.
3. An 802.3ad bonded link, with static routing. Our router and your router/firewall would be on a /31, and we'd statically route the range to your router/firewall.
4. As (3) but instead of 802.3ad, we use an Active/Passive link with RSTP.
5. We statically route to an IP on a /29. This /29 is presented on two physical connections, allowing you to run two routers in HSRP/VRRP.
6. Two separate BGP sessions, you can announce the IP range to us from a private ASN.

Tom