MTU "Failed on XBox 360, any way to make it work with my Airport?

Unfortunately, the AirPorts are not listed as XBox Live-compatible routers. Also, the AirPorts do not offer a means to change MTU settings.

Additional Microsoft articles on the topic of MTU:
o Xbox 360: You cannot connect to Xbox Live: The console fails the MTU test
o Connection Tests: Maximum Transmission Unit (MTU)

The only way I can get my 360 to talk to my airport or airport extreme is if I wire them in, so that's how I've got it set up now - the 360 uses the ethernet port and everything else talks wirelessly. A friend and I spent several adrenaline-drenched hours Tuesday co-op'ing through the campaign on legendary.

Very odd. I have the AEBSn Gigabit and had no problems with my 360 using the wireless adapter. Passes all network connectivity tests, and I didn't even open any ports for the thing. Finished Halo 3 on normal with my gf day after it came out. Now we gotta do it on legendary 🙂

Message was edited by: Jowiebear

I was having trouble getting my XBox360 to recognize my Airport Extreme (n) router wirelessly, and searched for help on this forum. Couldn't find an answer that would work for me.

Then I changed the encryption method from WEP to WPA on the base station. The 360 immediately recognized the Airport Extreme (n) base station. I input the base station password for the WPA encryption in the 360, and all is working perfectly.

If you are having trouble connecting the two wirelessly, use WPA encryption.

Good point, I was also using WPA.

I was having the same problem with the MTU so I tried it wired and also with out the router and it still didn't have enough MTU. Any suggestions??

There is a utility from Japan for mac that can change MTU on wireless and I have it on my all macs since I had issues with VPN and MTU issue on wireless.
I am in the office now and when I go home will check on my mac re. the utility name.

Its called "RMAC"

That changes the MTU used by the Mac. It does not change the MTU of the packets from other clients of the AirPort Extreme base station (AEBS).

The AEBS has no MTU setting because it does not adjust the MTU as the packets pass through it. Therefore each client is responsible for setting their own MTU value.

If the Xbox MTU needs adjusted and it is connected (wirelessly orEthernet) to an AEBS, the MTU must be adjusted on the Xbox... not on the AEBS and not on the Mac.

Anyone have any idea of how you would change the MTU setting on the xbox?