OK, turns out I couldn't ping because my ISP had to provision my router. I had to go through port by port until they could finally see my MAC address. Turns out port 6 is igb1. What a huge pain in the neck... Anyway, now I can ping.
Next, I just left the ethernet cable from my PC in one port and just changed the interface assignment for the LAN port until I found the assignment that lets me access the web gui. So port 7 is igb2 and I can access the web gui using a static IP - but I can also pull an IP via DHCP. I guess I'll repeat that until I've mapped all the ports.
Thanks for the help, everyone!