Seraphstrike
04-30-08, 05:19 PM
Thead title says what I am trying to do.
I do not have a wireless adapter for my 360 so I am using a network bridge through my laptop which is connected to a T-Mobile wireless hotspot. I believe the bridge is set up correctly. When I try to connect to Xbox live, the network is found, IP test passed, DNS test passed, but I fail the MTU test.
I know the basic answer is you have to fix your router and increase MTU size. Well in this situation I can't access the T-Mobile router so I have no idea what their MTU setting is. I honestly can't imagine it is lower than 1365 so I think the issue is somewhere between my xbox and my wireless network card. Xbox requires roughly at least 1365 MTU. I don't know too much about networking but here are some things I've tried or some potential solutions I've thought of.
First I ran the TCP/IP analyzer test on my laptop while the bridge was active. The MTU in the results was 1492 or something around there...which makes me think this is not a T-Mobile router MTU setting issue.
Next, I went to DOS and started pinging websites with specific packet sizes. For example "ping Google -f -l 1400". This is while the bridge was still active. Everything above 1350 or so was fragmented so obviously MTU is getting restricted somewhere? However the strange thing is roughly from 750 - 1350 packet size, packets aren't even being recognized, the ping test times out every single time like it was a black hole of some sort. Below 750 packet size I am successfully sending packets. Did not try running this test with the bridge disconnected, not sure if that makes a difference.
I also checked the network adapters in the registry and the coded MTU size for each one. For the wireless adapater, bridge, and ethernet adapater I set MTU to 1492.
Not really sure what else to do. Could this be a firewall issue? Closed port issue? MTU issue on the T-Mobile router? (but why did that test say 1400+ MTU on my connection?) Or maybe xbox just isn't allowed to connect because there are two MAC addresses showing up on my T-Mobile connection. I could enter my laptop MAC adress on my xbox360 settings so only 1 shows up. Do I have to manually enter IP address in my 360? There are just too many things to try and I don't know enough about networking. Any help would be appreciated.
I've tried calling T-Mobile, they are very unhelpful and won't work with me at all. I think they think I'm trying to steal internet or figure out a way to enable multiple connections per one account. They also told me they will not change any router settings for a hotspot nor will they tell me the current settings of the router for the hotspot I am connected to. I will probably try calling Xbox live tonight.
If you need me to run any more tests or run commands to give you a better idea of what could be my problem, just post here and I'll get back to you with a reponse.
Thanks in advance.
I do not have a wireless adapter for my 360 so I am using a network bridge through my laptop which is connected to a T-Mobile wireless hotspot. I believe the bridge is set up correctly. When I try to connect to Xbox live, the network is found, IP test passed, DNS test passed, but I fail the MTU test.
I know the basic answer is you have to fix your router and increase MTU size. Well in this situation I can't access the T-Mobile router so I have no idea what their MTU setting is. I honestly can't imagine it is lower than 1365 so I think the issue is somewhere between my xbox and my wireless network card. Xbox requires roughly at least 1365 MTU. I don't know too much about networking but here are some things I've tried or some potential solutions I've thought of.
First I ran the TCP/IP analyzer test on my laptop while the bridge was active. The MTU in the results was 1492 or something around there...which makes me think this is not a T-Mobile router MTU setting issue.
Next, I went to DOS and started pinging websites with specific packet sizes. For example "ping Google -f -l 1400". This is while the bridge was still active. Everything above 1350 or so was fragmented so obviously MTU is getting restricted somewhere? However the strange thing is roughly from 750 - 1350 packet size, packets aren't even being recognized, the ping test times out every single time like it was a black hole of some sort. Below 750 packet size I am successfully sending packets. Did not try running this test with the bridge disconnected, not sure if that makes a difference.
I also checked the network adapters in the registry and the coded MTU size for each one. For the wireless adapater, bridge, and ethernet adapater I set MTU to 1492.
Not really sure what else to do. Could this be a firewall issue? Closed port issue? MTU issue on the T-Mobile router? (but why did that test say 1400+ MTU on my connection?) Or maybe xbox just isn't allowed to connect because there are two MAC addresses showing up on my T-Mobile connection. I could enter my laptop MAC adress on my xbox360 settings so only 1 shows up. Do I have to manually enter IP address in my 360? There are just too many things to try and I don't know enough about networking. Any help would be appreciated.
I've tried calling T-Mobile, they are very unhelpful and won't work with me at all. I think they think I'm trying to steal internet or figure out a way to enable multiple connections per one account. They also told me they will not change any router settings for a hotspot nor will they tell me the current settings of the router for the hotspot I am connected to. I will probably try calling Xbox live tonight.
If you need me to run any more tests or run commands to give you a better idea of what could be my problem, just post here and I'll get back to you with a reponse.
Thanks in advance.