I have an ASUS RT-N66U router behind the AT&T U-Verse supplied 2wire modem/router on a 24Mbps connection. The ASUS is behind the U-Verse 2wire modem, as I want to use OpenDNS and wireless N and not just the built in 802.11b/g capabilities of the 2wire.

Recently, all connections through the ASUS router have become extremely slow; kess than 2Mbps. If I connect any device to the 2wire, the speed is exactly what it should be.

Moved the ASUS about two feet away, which did not change the slowness. I don’t have any disabled ports and this configuration used to work just fine until we moved.

  • The question is unclear as asked. Are you saying that WIRELESS connections are running at 2Mbps? Perhaps we need a network diagram here. – Arthur Mar 18 '15 at 14:23
  • Could be something causing interference near the Asus router, have you tried moving the device to another location and testing the MBps? – Batman666 Mar 18 '15 at 14:48
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    Did you turn off the wireless on the AT&T U-Verse router? It might be causing interference. You should also try a wired connection to the Asus router. If it's still slow, then wireless isn't the issue. – Mr. Llama Mar 18 '15 at 14:54
  • How are these two devices connected? Via Ethernet I hope. Disabling Wi-Fi on the AT&T U-Verse router and putting it into bridge mode is the setup one wants in a situation like this. If Wi-Fi is still enabled or the NAT/DCHP functionality is still active on the 2wire, then you will create lots of networking headaches that would lead to slowness like this. – JakeGould Mar 18 '15 at 21:16

Suggest you review the configuration settings of the 2wire device. If it is not in Bridge mode, then call ATT to have them set it in Bridge mode (which often only they can do). This will also disable wireless coming from the 2Wire, which is a goodness.

Bridge mode has nothing to do with the distance between the 2Wire 'Gateway' device and your ASUS router. Bridge mode is a configuration which tells the 2Wire not to try to double-route the traffic, so it functions as only a codec device (the digital equivalent of 'modem').

This means the underpowered (IMHO) 2Wire is no longer trying to route. You have a perfectly capable ASUS router, let it do the routing.

This also avoids the dreaded 'Double NAT', killer of fast performance.

  • When I was doing research, I came across that suggestion and I have moved it about two feet away. Sadly, the tests came back with the same results. – gH8nbVMk87j3m9LiF Mar 18 '15 at 19:19

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