In short, it works. There are some tricks in the configuration, but since you use it, everything works just fine. TP-LINK TL-WR720N V1 (European model) is a small 150 Mbps wireless router, 2.4 GHz B/G/N. The most attractive is the presence of two Ethernet LAN ports and its small power consumption, 0.8-1.5 Watts on AC side. Its $15 price in local store also adds to its allure. It is based on Atheros AR9331 chip. The TL-WR720N V1 is not supported by DD-WRT clones, so we stuck to the stock firmware. Also I was pleasantly surprised by the TP-LINK customer support. I was in contact with them during my experiments and they honestly tried to tell me something useful. Despite the fact that TL-WR720N is already discontinued. My LinkSys E3000 is based on Broadcom BCM4718A1 chip and it runs on v1.28.7494 MIPSR2-Toastman-RT K26 USB VPN firmware. DD-WRT message on this subject is less than encouraging: "WDS between different chip vendors (atheros, broadcom, ralink) will not work most of the time since it's INCOMPATIBLE and no we will NOT fix it." Toastman's opinion was also gloomy: "WDS doesn't work so well these days, it seems rather less reliable and is prone to disconnections." However, DD-WRT gave us a chance: "multi-vendor WDS interoperability is possible." So, I decided to give it a try. STEP 1. Configure E3000 to enable WDS Enter Basic/Network configuration page of your E3000 router. Wireless Mode should be set to Access Point + WDS. As a Channel should be selected some fixed channel. You could use Scan button to look for less crowded one. WPA Personal/AES security setting was recommended in other posts and it works in my case. I did not try to change it. WDS link should be set to Automatic, otherwise my TL-WR720N LAN clients hang during the connection. Channel Width 20 MHz tenfold increased my TL-WR720N wireless throughput over 40 MHz. The throughput increase was also mentioned in other posts on this subject. May be your numbers will be different, you could play with it later. If you did not do it yet, take note of your LAN Router IP Address, LAN Subnet Mask, LAN IP Address Range, Wireless (2.4 GHz) SSID and Wireless (2.4 GHz) Shared Key. You will need them for your TL-WR720N configuration. Press Save button. After that I checked my wireless clients connection state. They barely noticed the changes. STEP 2. Configure TL-WR720N Download 23.11.2012 TL-WR720N firmware from TP-LINK website and Unzip it. Turn on power of your TL-WR720N. If it is not just out of the box, press Reset button of the TL-WR720N for more than 5 seconds to reset its settings to default. Disconnect you PC from your local network and connect it to a LAN port of the TL-WR720N. By default, TL-WR720N IP address is 192.168.0.1, subnet mask 255.255.255.0 and DHCP is on. If IP configuration of your computer is set to Obtain an IP address automatically (DHCP client), your computer IP will automatically reconfigure. You could try to reboot your computer connected to TL-WR720N router in the case of problems. Type http://192.168.0.1/ URL into your browser. Windows Security window should appear. Enter admin in both User name and Password fields of the window and press OK button. Enter Maintenance/System Tools/Firmware Upgrade page. Select your downloaded TL-WR720N_V1_121123.bin file and press Upgrade button. Wait while your router reloaded. Enter Basic Settings/Wireless/Wireless Settings page. Set Channel to the same value as in your E3000 Wireless (2.4 GHz) Channel configuration. Set Enable WDS. Press Survey button, find your E3000 Wireless (2.4 GHz) SSID and press Connect in the list. Select Key type to WPA-PSK/WPA2-PSK. Type the same Password as E3000 Wireless (2.4 GHz) Shared Key. Press Save button but do not reboot your router yet. Enter Basic Settings/Network/WAN configuration page. Changing WAN settings (as well as STEP 3) is optional. But leaving WAN Connection Type as Dynamic IP (DHCP client) slows down TL-WR720N to E3000 connection. It also is not clear if other revisions of E3000 firmware will properly work with these settings unchanged. The only significant value to be set is Static IP as WAN Connection Type. I guess that other fields affect nothing. Nevertheless we try to set it to some reasonable values. Set IP Address to some value inside IP Private Address Space, but outside E3000 LAN subnet. Set Subnet Mask to be outside E3000 LAN subnet. Set Default Gateway to the same value as IP Address. Set Primary DNS to the same value as E3000 LAN Router IP Address. Press Save button but do not reboot your router. Enter Advanced Settings/DHCP/DHCP Settings configuration page. Set Disable to DHCP Server and press Save. Do not reboot your router. The following step is not mentioned in TP-LINK's document "How to configure WDS function on TP-LINK Routers". If you reboot your TL-WR720N router at this moment, you will have no way to access TL-WR720N configuration but to reset its settings to default. They also did not mention that Channel value should be set to the fixed number. I do not know if TP-LINK software can work without the following settings or the documentation is just incomplete. Enter Basic Settings/Network/LAN configuration page. Set IP Address to some value inside E3000 LAN subnet, but outside its LAN IP Address Range. Set Subnet Mask to the same value as E3000 LAN Subnet Mask. Pressing Save button causes your router to reboot. At this moment your TL-WR720N should be connected to E3000 and be fully functional. STEP 3. Configure E3000 to assign IP to TL-WR720N (optional) It looks like Tomato E3000 software properly redirects queries to TL-WR720N despite the fact TL-WR720N IP address is unassigned. Just to be on safe side we fix it. Enter Status/Device List page of your E3000 router. The last line of the list is my TL-WR720N router. You could check its MAC Address against Wireless MAC Address of the Status page of your TL-WR720N. Press [static] entry just below MAC Address of the TL-WR720N. Set IP Address to the same value as TL-WR720N LAN IP Address. Check Bound to checkbox. Hostname field is optional. Press Add and then Save buttons. You may check that IP Address is properly assigned to the TL-WR720N at Status/Device List page of your E3000 router. Results My TL-WR720N works just fine for a week. Its connection to E3000 is restored faultlessly despite my numerous attempts to destroy it during my experiments. No problems with Internet connection either. Internet transfer speed from LAN ports of the TL-WR720N is 32.5 Mbps down/36 Mbps up (95 Mbps down/80 Mbps up on my E3000). It well correlates with wireless transfer rate between TL-WR720N and E3000 (see Status/Device List picture above). The TL-WR720N WAN port can be pinged but dead in all other respects. If somebody has an idea how to revive it, please let me know.