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E3000 5GHz WDS - 54Mbps max

Discussion in 'Tomato Firmware' started by David Schwartz, Feb 21, 2012.

  1. David Schwartz

    David Schwartz Networkin' Nut Member

    WDS at 2.4GHz works great and settles at speeds over 200Mbps. But at 5GHz, the maximum WDS bit rate I can get is 54Mbps. Hardware is two WRT610Nv2's, converted to E3000s. Clients do connect at over 54Mbps, only the WDS speed seems stuck.

    I've tried many different firmware versions and configuration options of all kinds. I've tried on security, WEP, and WPA2-AES. I've tried 40Mhz channels and 20Mhz channels. I've tried every combination of other options I could think of.

    Has anyone actually gotten WDS to work at over 54Mbps on an E3000 or WRT610Nv2 on the 5GHz band?
     
  2. jsmiddleton4

    jsmiddleton4 Network Guru Member

    Yes. Which firmware version are you using? The 04xx ones do not either report correctly or connect at highest speed. 7483.2 is best most stable version for WDS. WMM to "Auto".

    40mhz in both 2.4 and 5 ghz channels.
     
  3. David Schwartz

    David Schwartz Networkin' Nut Member

    I'll give tomato-E3000USB-NVRAM60K-1.28.7483.2MIPSR2-Toastman-RT-Ext.bin a shot tomorrow and report back.
     
  4. David Schwartz

    David Schwartz Networkin' Nut Member

    Oddly, with this build, WMM won't stay on auto. It switches itself back to enabled.
     
  5. jsmiddleton4

    jsmiddleton4 Network Guru Member

    "It switches itself back to enabled."

    That is fine. It senses that it needs to be enabled when you set it to "Auto". That behavior is by design.
     
  6. David Schwartz

    David Schwartz Networkin' Nut Member

    The behavior is the same. 5GHz WDS is maxed at 54Mbps, at least as reported by Tomato.
     
  7. bucher

    bucher Networkin' Nut Member

    "The maximum wireless effective throughput is halved after the first retransmission (hop) being made. For example, in the case of two routers connected via WDS, and communication is made between a computer which is plugged into router A and a laptop which is connected wirelessly using router B's access point, the throughput is halved, because router B has to retransmit the information during the communication of the two sides. However, in the case of communications between a computer which is plugged into router A and a computer which is plugged into router B, the throughput is not halved since there is no need to retransmit the information."

    Does this play a roll in anything?
     
  8. David Schwartz

    David Schwartz Networkin' Nut Member

    No, since no retransmissions are ever involved in my setup (I'm using WDS as a transparent Ethernet bridge, not a repeater) and I'm measuring the rate of only the WDS link itself anyway. 2.4GHz WDS works perfectly at speed of over 200Mbps. And 54Mbps is a WiFi "magic number".
     
  9. jsmiddleton4

    jsmiddleton4 Network Guru Member

    Advanced wireless. Both channels setup the same.
     

    Attached Files:

  10. jsmiddleton4

    jsmiddleton4 Network Guru Member

    Once you make any changes, save of course, then reboot the slave then reboot the master.

    Edit: Also double check your MAC's. Not uncommon to put the 2.4ghz channel in the MAC field instead of the 5 ghz channel's.
     
  11. David Schwartz

    David Schwartz Networkin' Nut Member

    So far, I still have the same problem. WDS peaks at 54Mbps. Thank you so much for giving me all those settings though. Having known-good settings to test with simplifies things immensely. It seems to sit at 26Mbps one way and 27Mbps the other way now. The routers are less than 100 feet apart, but I need to test with them closer to make sure it's not just a range issue now.
     
  12. jsmiddleton4

    jsmiddleton4 Network Guru Member

    The speed will vary. I suggest setting up some kind of streaming through a client attached to the slave. Stream a video or something and then watch the router to router speeds. Also wireless ethernet bridge mode is easier to maintain than WDS. With dual band you still have the 2.4 ghz channel to be an AP for the slave and then use the 5.4 channels for the bridge.

    Did you do hard reset after going back to 7483.2?
     
  13. David Schwartz

    David Schwartz Networkin' Nut Member

    I did a hard reset on both sides. I can't use wireless Ethernet bridge because the router has no way to know what Ethernet hardware address to put on the packets. (I need the routers to handle packets they can't understand.) The WDS link replaces a physical Ethernet cable and I need the same behavior. WDS works fine, I just get very poor performance at 5GHz. I can live with the link at 2.4GHz, it just means I have to move other things to 5GHz.
     
  14. jsmiddleton4

    jsmiddleton4 Network Guru Member

    The only speed issues I've had with WDS is when trying any of the 04xx versions. My setup is the slave is part of my home theater system and stream Netflix, media servers, etc., all to my home theater. I am at 300 all the time via the 5 ghz channels in wds mode. I prefer WDS to wireless ethernet bridge because I can use wireless filters in the master to steer traffic to particular routers. As you noted the way packet information is transmitted in bridge mode does not allow for MAC filtering. Only works in WDS mode.
     
  15. jsmiddleton4

    jsmiddleton4 Network Guru Member

    I'm going to pull the first captures since my MAC addresses are in them.

    EDIT: Also try connecting the wds channel with no security. See if you get the higher speed. And if so then go back and use WPA2 AES....
     
  16. jsmiddleton4

    jsmiddleton4 Network Guru Member

    Any progress?
     
  17. David Schwartz

    David Schwartz Networkin' Nut Member

    It seems to hover around 54Mbps, occasionally popping up to 81, then dropping to 39. The two routers are less than 100 feet away and are at opposite ends of a normal house. I think it's a range issue more than anything else, though it's possible one of the routers has an antenna or radio issue, I guess. I don't think it's a software/firmware issue.
     
  18. jsmiddleton4

    jsmiddleton4 Network Guru Member

    Do you have other wireless networks stepping on yours? What are your power settings? I run at 62. I've not seen any improvement in signal by manually assigned TX/RX antennas. 100 feet does not seem that far to me. Mine are not that far apart but still 100 feet doesn't seem outrageous for the 5 ghz channel. If you don't need the US standard for channels some folks report better results with setting to Singapore. You have more channels and something about those channels is superior to the US ones.
     
  19. David Schwartz

    David Schwartz Networkin' Nut Member

    I live in a pretty isolated area. I have one other 2.4GHz network that I can occasionally receive. The 5GHz band is clear, at least of WiFi. There might be neighboring folks with 5GHz phones, but I've tried various frequencies in the 5Ghz band. I've tried various power settings and it doesn't seem to make any difference in received signal strength or bit rate, 0 works as good as anything else.
     

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