Ok, heres my set up, i have 2 sites, one site has a 871 and the main site has a 2821. They are currently connected via ipsec, We just had p2p fiber 5x5 installed, however, there weren't enough ports on the 2821 to terminate that end, so I bought and installed a HWIC-4ESW. I noticed I can't assign and IP address to any of the interfaces. So my question is two fold, how can i terminate the p2p to this card? and Second, is it an all or nothing when it comes to using these ports, meaning the switch acts as its own independent switch? the remote site will get internet and everything over this pipe.