How to change MTU setting on ZyXel-P-2602HWT-F3 modem slash router?

[Bersaas]

Hi, I've recently changed my modem and router to ZyXel-P-2602HWT-F3.  But now a days, I can't sign in to my xbox live account!

It says;  Your network doesn`t have a sufficient MTU setting. Xbox live requires a minimum MTU setting of 1364.

On your pc, go to your router configuration webpage and set the MTU to auto, or 1364 or higher. If that doesn`t work, disconnect your console from the router and connect directly to the modem.

Atm, I am logged in at my router, on my computer, but I can't find out were to change the MTU on ZyXel! Help me.
I should access WAN it says, but inside that topic, there is no information about MTU

[Shane]

Odd thing is, the default MTU of every router is 1500.
And on DSL it is normally 1436 or higher by ISP's. Normally any lower and the connection gets shot.

I found a couple of things you can try to change.

http://www.speedguide.net/faq_in_q.php?qid=204

http://www2.zyxel.com/support/knowledgebase/kb_detail_10562.shtml

http://www.zyxel.co.uk/web/support_faq_detail.php?faqID=174&pid=20040908175941

Let me know how it goes

Shane

[Evan]

Just something to keep in mind for future purchases. Always look for networking hardware that says it is designed to work with Windows Vista or Windows 7 as the networking requirements are actually slightly less strict for Xbox Live.

That is advice I heard from the engineer who runs Xbox Live. 

Evan

[Bersaas]

Thanks for your advice! But I still have problems with ZyXel connecting to Xbox live. I'll soon hire a professional!

[Shane]

Before you go hire someone, try calling your ISP and see if they can check the MTU size for you

Shane