Basically, we now have two wireless networks in the house. The 802.11g router is used for the work laptops and has
specific SSID and WEP requirements. That router is set up a little more securely, so we plugged our broadband into that
router directly. We keep that router in mixed mode for both "b" and "g" clients since we have both
types of WiFi clients.
We're letting the 802.11a router be totally unfettered by security, for two reasons.
First of all, that slows things up and the point here is to speed them up. Secondly, the router is still protected by
NAT as it will sit behind the first router. Yes, if you sit in front of our house, you might be able to wirelessly surf
the web, but since you don't know where we live, we feel pretty safe! This router is protected from outside Web
intrusion, so we're comfortable to at least test this configuration out.
To have the 802.11a router sit
behind the 802.11g router in our network topology, we simply plug some Cat-5 wire out of the g router and into the
"Internet" jack of the "a" router. Essentially, all Internet traffic from "a" passes
through "g" and vice-versa. The new router is actually capable of supporting a, b, and g clients, however we
disabled the g radio as shown below. There shouldn't be any interferance because these radios are on completely
different frequencies, but why keep the radio on if it won't be used?
One additional important point.
Both routers can't have the same IP address. By default both of these Linksys routers want the private IP of
192.168.1.1. Once you set up the second router, be sure to modify the IP address so that it's on a different
Next up is to make sure your Xbox 360 can see the new network. In the Network Settings of the 360
Dashboard, you should now see your new network under whatever name you gave it. If you grab the Linksys router that we
did, the default SSID or network name is "linksys-a". For security reasons, we definitely recommend changing
that. Find your new network on the 360, test the connections and you should be all set!
"gotcha" that might only apply to this model router: there is a Turbo mode setting on it. We tried to use it,
but the 360 didn't see the network, so we turned it off. Choosing an auto mode or a 54 Mbps transfer mode seemed to work
the best. This confirms that the 360 is unlikely to natively work with any of the pre-N or SpeedBoost routers on the
market that claim 108 Mbps or more. That makes sense, since the Microsoft adapter isn't capable of anything higher than
So, after dropping the extra dough and configuring the new network, how did it work? The graph below
shows that we're above the minimum line for HDTV transmission from the Windows Media Center PC to the Xbox 360 for the
entire test we ran.
Not only are we above the line, but we're
stable when you compare the chart to our
test on the 802.11g router. This is likely due to the different radio frequency; there's less interference form
microwave ovens, cordless phones and other WiFi networks.
Aside from the technical proof that the new
router is a much better choice, the actual practice of using the new network is much more enjoyable. We've watched
several hours of HDTV on our home brewed Windows Media
Center over WiFi on the Xbox 360. Even when the cats decide to wrestle next to the Xbox, we haven't seen any impact
on the signal. Of course, the cats tend to have our full attention when they decide to play "WWF", so we might
have missed a stutter on our set!