STOP...
you're confused...
step away from the router
The static IP in your router is the static IP OF the router...
-static IPs are set by the device itself (xbox is set on the xbox, pc is set on the pc, router is set on the router)
-dynamic IPS are set by a DHPC server (xbox and pc are both set by the router)
The ports being used are not controlled by the xbox or the router... Xbox Live determines which ports it uses...
"port forwarding" is manually telling your router which ports to expect Xbox traffic on so that it doesn't have to figure it out on its own.
Imagine your console is a night club Xbox Live is trying to get into the night club... port forwarding is like putting it on the guest list the bouncer (router) doesn't need to size it up and make it wait every time you connect.
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Here is what you do
-Turn on your computer (any computer on your network will do)
-Go to "Run" and type "cmd" and hit enter
-type "ipconfig /all" and hit enter
-write down the gateway, subnet mask, and both DNS servers
-turn on your xbox 360
-in the dashboard go all the way to the systems tab
-select the network option
-choose to manually configure the network settings
-use 192.168.1.160 for your IP address and use the numbers from your PC for everything else
-test the setting to make sure you can connect
-go back to your PC and open a web browser
-follow the "tip2" instructions on the link you posted earlier (make sure your Xbox 360 is on):
http://support.2wire...amp;p_topview=1-go back to your Xbox 360 and test the network settings again... the NAT should be "Open" which is what you want
Thats it...
There is no real way to test your ping... but certain games will provide you with a connection health meter. I know when you're in the lobby on uno there is a decent health meter... smashTV has one as well.
Gears has a health meter but you can't check it youself, if you're hosting a game people who see your game listed will see your health (so you could have a friend check your room in the search list. Most full retail games are this way... for whatever reason XBLA games have the most detailed and easiest to read health meters.
The health meter is usually a direct representation of your ping... a low ping is good and will be represented with a full and green meter. a poor connection/ping will have a short red bar. and a so-so connection will be mid length and orange or yellow.
My connection speed is mediocre at best, but with port forwarding I always have a full green bar on my health meter, and I get comments all the time on Gears about how I was the least laggy host they've ever had.
I know people with connections two or three times faster then mine who are laggy as all hell just because of how their local network is setup.