Can't connect Xbox 360 through 3Com Router to Xbox Live
My router is a model number 3CRWER200-75 3Com router. Currently the 360 is hard wired into it through an Ethernet cable. We're using a cable modem through time warner to get online. Whenever I test the connection it gets to the MTU stage and then fails and I'm not sure what else to try. I'm not sure if there's any settings in this certain router model dedicated to just MTU.
I've tried several things including increasing the bandwith on the router, disabling the firewall and enabling port forwarding but nothing seems to work. I even gave the 360 a static IP address from the router and configured it for one. I'm not sure what else to try. I might try and update the firmware though the update doesn't look like it would do much honestly. Either way any ideas or advice would be appreciated. Thank you.