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WNR3500Lv2 Shibby 092 wireless signal help.

Discussion in 'Tomato Firmware' started by Rocky Grim, Apr 15, 2012.

  1. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Wireless_Networks.jpg Wireless_Overview.jpg Wireless_Settings.jpg Wireless_Signal.jpg
    I had a problem with my WNR3500Lv1, and I was sent the WNR3500Lv2 as a replacement. I don't remember having the wireless interfierence I am having now. I have tried using channels 1,6, and 11 and I am getting Severe interfierence and about 108 Mbps. I'm seeing alot of wireless networks when I hit refresh multiple times under wireless survey. I never seen this many on the v1. I think the v2 is a little better at a distance than the v1. Most of the networks I see have little to no signal.

    I have three devices that need access to a good wireless signal. The furthest is a laptop that is only about 25ft from the router, but there is three drywall walls between them. Next, I have a DISH Network Hopper DVR that is only about 10ft to 15ft away with one drywall wall seperating them. This device has a Wireless N Netgear USB stick provided by DISH Network. Finally, I have another laptop that is less than 10ft away from the router and is positioned facing the routers front. This device has a clear line of sight. It also has a Wireless N Netgear USB stick.

    I am not up on the whole wireless thing, and have always just used wired connections. I'm hoping to get some advice from some of the more expierenced people around the forums. Attached are my settings pages and a list of other wireless networks. I have read through some of the settings that others have changed to improve there wireless signal. However, I don't really see any improvements at all. There has to be something I am missing. I have seen better range and quality from some of the wirless g routers I have used in the past. Please let me know what you guys think I shoud try.
     
  2. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Should I be using 20Mhz or 40Mhz for channel width for the WNR3500Lv2? Is 40Mhz for 5Ghz devices and 20Mhz for 2.4Mhz? I'm not sure how that works.
     
  3. shibby20

    shibby20 Network Guru Member

    20MHz = half of wireless speed. Well you should use 40MHz if it is possible.

    Try to enable afterburn (advanced -> wireless) and/or change WMM settings.

    change channel (on 11 you have 4 another networks) to 2, 3 or 4 lower or 12, 13 upper.

    change "n only" to auto.
     
  4. eahm

    eahm LI Guru Member

    Not always, actually most of the times 40Mhz is a lot worse than 20Mhz for the 2.4Ghz band.
     
  5. shibby20

    shibby20 Network Guru Member

    ok, may be stable at 20MHz but always 20MHz = half of wireless speed. If you have wireless N 300mbps, after set 20MHz you will have connection max 144Mbps. If you have wireless N lite 150Mbps, with 20MHz you can get connection only 72Mbps.
     
  6. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Thanks for the tips Shibby. I appriciate it greatly. I will give your suggestions a try and see how things work out. One thing I did try already was moving to channel 4. This has got me up to 150Mbps. The speed bounces around a lot. The adapters are for 300Mbps. I will try the other settings as well.
     
  7. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Well, I don't get this at all. Regardless of what channel I use I keep getting "Severe" interference. I have tried 3,4,5,9, and 10. All which do not have any other wireless networks on them. I also can't seam to get a wireless speed of more than 150Mbps regardless of the fact that the wireless adapters are capable of 300Mbps. For example right now I am stuck at 108Mbps on channel 3 with 40Mhz channel width. When I try to use channels 12 or 13 I can only get one device to connect. The other devices will not connect with those channels. At this point I am really missing the v1. I got better wireless speeds with it. I also didn't suffer from all this interference. I think my only option is to add external antennas. I have 3 5dbi antennas from another device I can use. I just need to order the connectors to attach them to. I have also tried Toastmans latest build which is giving me similar wireless speeds. Therefore, it is not the firmwares it is definatly that this router sucks as far as wireless is concerned. If anyone has any other tips to share please let me know.
     
  8. Planiwa

    Planiwa LI Guru Member

    In case anyone is interested -- here is a command to show which channels have severe interference:
    Code:
    # winter # wireless interference
    for C in $(wl channels);do
      case $(wl chanim_state $C) in
      1) I="$I $C";;
      esac
    done
    case $I in ?*) echo $I;; esac
    
    It seems to me that
    When we allow wl to mitigate interference, it finds interference.
    When we allow it to mitigate noise, it finds noise.
    When we allow wl to do one thing, it will do something else.
     
  9. Rocky Grim

    Rocky Grim Networkin' Nut Member

    I have pasted the command. However, this is what I am getting.

    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
     
  10. Planiwa

    Planiwa LI Guru Member

    If there is no interference the list of channels with interference is empty.

    If the GUI shows severe interference and winter shows none, that would be very interesting.
     
  11. Planiwa

    Planiwa LI Guru Member

    Very interesting. That might indicate an inconsistency between what channels wl thinks you can have and what channels wl thinks you can have.

    You might want to look at:

    wl country
    wl channels
    wl channel
    wl chanim_mode
    wl interference
    wl interference_override
    wl noise
     
  12. Rocky Grim

    Rocky Grim Networkin' Nut Member

    wl country - US (US/0) UNITED STATES
    wl channels - 1 2 3 4 5 6 7 8 9 10 11
    wl channel - No scan in progress.
    current mac channel 6
    target channel 6
    wl chanim_mode - CHANIM mode: detect + act.
    wl interference - Auto Wireless LAN Interference mitigation is enabled and not active. (mode 3)
    wl interference_override - Interference override disabled.
    wl noise -86
     
  13. Toastman

    Toastman Super Moderator Staff Member Member

    Rocky Grim likes this.
  14. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Thanks a lot I appreciate it. I'm trying to get the hang of this, and figure something out. The wireless seams really terrible for as close as the devices are. Hoping I can figure out some alternative.
     
  15. Rocky Grim

    Rocky Grim Networkin' Nut Member

    So I should use channel 1,6, or 11 from what I have read regardless of other networks. Using any channel inbetween will cause problems for everyone. What about all the networks using channels other than 1,6, or 11? Are they making it impossible for anyone in my area to recieve a good signal?
     
  16. Toastman

    Toastman Super Moderator Staff Member Member

    Rocky - In a word, yes, they are.

    But as you observe, it no longer matters because you cannot make the other guys change. The article serves only to show you what is happening :)

    They should have made it impossible to use 2,3,4,5,7,8,9,10 and that would have made things far better. They could have done this easily, and called channels 1,6,11 wifi channels A,B, and C. End of problem.

    Until "N" came along and they managed to screw things up even more, that is. Then some idiot added "auto" channel selection to the routers and now someone else's router can land on top of yours at any time and then disappear again a few moments later (leaving no clues behind as to what screws your connection every few minutes). Not to mention every passing wifi enabled phone trying to access your router, that you don't know about.

    This is a worldwide problem now and getting worse. There seems to be a tenfold increase in the number of AP's I can see in the last year. University students at several local univs. tell me that it's almost impossible trying to connect to some of the campus routers now.
     
  17. Planiwa

    Planiwa LI Guru Member

    I won't tell you what to do, but I can tell you what I would do:

    I would definitely not use channels other than 1 6 11.

    I would disable chanim_mode and interference mitigation.


    I would simply not trust wl with anything more than what is necessary.
     
  18. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Thanks for the advice guys. Planiwa how do I disable chanim_mode and interference mitigation?
     
  19. Planiwa

    Planiwa LI Guru Member

    I would use these commands:
    Code:
    wl chanim_mode 0
    wl interference 0
    
    I hesitate to use the GUI because of reckless side-effects.

    Let me take a look . . .

    Advanced > Wireless

    IM is there, but I don't see Chan IM Mode. I wonder how yours got set?!

    Ah, I'm using Toastman FW but you're using Shibby FW -- it may be on the Wireless page too.
     
    Rocky Grim likes this.
  20. Rocky Grim

    Rocky Grim Networkin' Nut Member

    I am using Toastman firmware at the moment. Okay I see the commands I will use those. Thanks for your help. I appreciate it greatly. Just checked and it is showing both disabled. Sweet! Thanks again. I will leave it like this, and see how things go from now on.
     
  21. Toastman

    Toastman Super Moderator Staff Member Member

    Bother. The recent mitigation override I added to make it easier to experiment - doesn't work from the GUI. Apparently you can't set this per interface, so wl0_interference_override has no effect.
     
  22. Planiwa

    Planiwa LI Guru Member

    I've noticed that some wl settings don't have corresponding NVRAM settings.
    The wl command is somewhat NVRAM aware, but this may be limited.

    There is a wl_mitigation and a wl0_mitigation, but it is not clear what sets them and what pays attention to them.

    One problem is that there does not seem to be a clean "service wireless stop/start/restart".

    (I do have tools to tell me when the working NVRAM changes, so I can tell that making a change via the wl command does not inform either the working NVRAM nor the flashed NVRAM of the change.) And in some cases, such as Chan_IM_Mode and Interference_Override there is not even an NVRAM variable.
     
  23. Rocky Grim

    Rocky Grim Networkin' Nut Member

    When I reboot the modem they change back to
    wl chanim_mode - CHANIM mode: detect + act.
    wl interference - Auto Wireless LAN Interference mitigation is enabled and not active. (mode 3)
    It looks like my problem is solved though. Setting the channel to 6 gives me 300Mbps speeds on my two dual band wireless N adpaters. I am also getting the full speed of 150Mbps on my other adapter. The highest I have seen for signal quality is 53 though. That is even with my laptop sitting less than 10ft from the router. I even bought valcro so I could attach the wireless adapters to the usb cable and stick them to the wall. I thought this would improve the signal quality. However, it almost seams like it isn't possible to get a signal quality of over 55.
     
  24. Planiwa

    Planiwa LI Guru Member

    Yes, I just posted about that sort of thing.
    If it stays stable there is no need to worry. Otherwise, if the settings make a difference, it is always possible to put the commands into FIREWALL_UP.

    The Signal Quality is simply the difference between RSSI and Noise. 55 sounds really good.

    Quality of 55 means that the signal is 317,000 times as strong as the noise.

    In Device List you want to measure the Noise level "floor" to get a current reading.

    Depending on wl settings, the noise can vary from 76 to 92 for identical conditions.
    Also, wl can come up with crazy RSSI values -- as high as -11. But typical RSSI values I see are -60 to -45 and Noise -80 to -85. That would give quality values of 20 to 40.

    UPDATE:

    I just saw an RSSI of -34. This is very close to the router. So, with a noise level of -83, that's a quaity of 49:
    Code:
    Noise: -83
    RSSI idleS assocS    TX-P  TX-F    RXU-P RXMB-P  TXkb/s RXkb/s + MAC  IP  Hostname
    -34    1  1954  107622    74    72257    839  65000  65000 N :85 .210 Ma
    -45    0  7123    34244    7    30266  1096  54000  18000 . :18 .220 Or
    -48    0  7119  1247087  2103  764017    515  54000  54000 . :A2 .110 An
    -52    0  1874    93316    0    58849    459  117000 130000 N :5B .120 Sa
    -53    0  1487    55307    49    34464    442  65000  65000 N :DE .130 Ar
    -54    41  7124        6    0      15      1    1000  54000 . :88 .
    -54    41  7124    3837    0    6240    160    1000  48000 . :71 .221 Or-iPad
    
    (format mangled by forum software)
     
  25. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Well, I don't know what happened, but I'm still using the same settings. However, now I am seeting interference severe again. It is stuck there. It will not move to acceptable at all. Guess I need to mess with channel 1 or 11 and see what happens.
     
  26. Planiwa

    Planiwa LI Guru Member

    Are you acrtually experiencing degraded performance due to interference?
    Or are you just worried by what wl reports?

    In my experience, wl may imagine inerference and then over-react to that, resulting in connection problems.

    But so long as mitigation modes are disabled, that shouldn't happen.
     
  27. mvsgeek

    mvsgeek Addicted to LI Member

    @ Rocky - does the "severe" interference go away when you power down the Dish Network equipment?

    Yesterday I observed a similar issue - suddenly all my wireless connections dropped for no apparent reason, and the SSID was no longer visible in Windows. From a wired PC I saw that interference on channel 1 was "severe", and would not change. A router reboot had no effect. Metageek's Wi-Spy still showed an extremely strong signal on channel 1 with the router powered off. Then I remembered that I'd recently connected an old Linksys range extender to my DirecTV DVR, to avoid having to run a cat5 cable. I unplugged the Linksys device and everything started working again - no interference, no dropped connections. After powering on the Linksys, everything is still running normally as of today.

    Here are my relevant settings:

    root@tcb451:/# nvram show|grep miti
    wl0_mitigation=0
    wl_mitigation=0

    root@tcb451:/# wl chanim_state 1
    0
    root@tcb451:/# wl chanim_mode
    CHANIM mode: detect only.
    root@tcb451:/#
     
  28. Planiwa

    Planiwa LI Guru Member

    FWIW:

    nvram find miti

    works just fine. But what the nvram command shows you is not necessarily what's in the NVRAM, nor is it necessarily what the wl command actually uses.

    To find what is actually in use:

    wl interference

    (Interference Mitigation is abbreviated to interference in wl, and to mitigation in nvram.)

    [If there's interest, I wrote a nice little article on (surprising facts about) nvram (in the Tomato context) in another place.]
     
  29. Rocky Grim

    Rocky Grim Networkin' Nut Member

    I am actually getting degraded performance. Last night on channel 6 it was reporting 300Mbps when I was talking to Planiwa and Toastman after I got off until today. No changes were made overnight. Then, when I looked at it today the wireless speed fell to 108Mbps and the quality on all the devices fell pretty low.

    My Dish Network box is that new Hopper they got out. It comes with a dual band wireless N USB adapter. It's a Netgear that has a Dish Network logo on it. When I look at the wireless signal from the main menu on the Dish Network receiver it says my wireless signal is only about 30 percent. I have not noticed a difference in signal quality whether the Dish Network receiver is on or off. Therefore, I think the problem lies some where else. I am not sure where though.

    All my devices are pretty close to the router so I do not understand why I see such degraded performance. I would think with such short wireless distances I would see pretty close to max speed on each device. The first laptop I have is only about eight feet from the router, and uses a wireless N Netgear WN111v2 USB adapter. I downloaded the latest wireless driver for it. The Dish Network has a wireless N Netgear WNDA3100v2 USB adapter. It is about eight to ten feet from the router max. The last device is another laptop with a Atheros wireless N adapter onboard. I noticed the driver was from 2010. I just installed the latest driver for it which came out this month I believe. This device is the farthest from the router about 25 feet.

    Planiwa when I run the fallowing command this is what I am seeing again.
    # winter # wireless interference
    for C in $(wl channels);do
    case $(wl chanim_state $C) in
    1) I="$I $C";;
    esac
    done
    case $I in ?*) echo $I;; esac

    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range
    wl: Not In Range

    Is this a problem?
     
  30. Planiwa

    Planiwa LI Guru Member

    Can you please run these:
    Code:
    wl channels
    wl channel
    wl chanim_state 6
    wl chanim_mode
    wl interference
    wl noise
    
    This should give you a report on all your devices:
    Code:
    for m in $(wl assoclist|sed 's/assoclist//');do
      set -- $(arp|grep $m); HN=${1%.*}; IP=${2%)}; MM=${m##*:}
      eval MIH$MM=\":$MM .${IP##*.} $HN\"
    done
     
     
    echo
    eval $( wl assoclist |sed 's/assoclist \(...............\)\(..\)/echo -n "\2 "; wl rssi \1\2 /'|sh|sort\
    |sed -e 's/^/RSSI/' -e 's/ /=/')
     
    echo Noise: $(wl noise)
    echo "RSSI idleS assocS    TX-P  TX-F    RXU-P RXMB-P  TXkb/s RXkb/s + MAC  IP  Hostname"
     
    for i in $(wl assoclist| sed 's/assoclist//')
    do
      MAC2=${i##???????????????}
      eval echo -n \$RSSI$MAC2
      set -- $(wl sta_info $i|egrep 'seconds|tx|rx|N_CAP'| tr -d -c '0123456789N ')
      case $# in
      10) set -- $1 $2  $5 $6 $7 $8 $9 ${10} N ;;
      *)  set -- $* . ;;
      esac
      printf "  %4s %6s %8s %5s  %7s %6s  %6s %6s %s " $*
      eval echo \$MIH$MAC2
    done |sort
    
     
  31. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Sorry it took me a little while to post the info you requested. The router pages kept freezing up. Then, when I would hit refresh it wouldn't let me log back in. Therefore, I did a 30-30-30 reset and started over. I'm still using the same Toastman build v1.28.0498 MIPSR2-Toastman-RT-N K26 USB VPN I was using before. This is the latest build. Whats happening is I am getting bad spots during the day and night where the signal will get terrible. Then, the wireless speed drops real low sometimes down into the 70Mbps range. This is also when I notice the "Severe" interference.

    1 2 3 4 5 6 7 8 9 10 11 12 13
    No scan in progress.
    current mac channel 8
    target channel 8
    wl: Not In Range
    CHANIM mode: detect + act.
    Auto Wireless LAN Interference mitigation is enabled and not active. (mode 3)
    -87
    Noise: -87
    RSSI idleS assocS TX-P TX-F RXU-P RXMB-P TXkb/s RXkb/s + MAC IP Hostname
    -47 3 89 0603 N 346 0 199 150 1000 135000 343 0 . :C4 .4 Rocky-LT
    -48 10 52 0603 N 15 0 16 24 117000 144445 38 0 . :E7 .6 Dish-Network
    -57 10 356 0603 N 32 0 88 117 1000 1000 136 0 .

    Update: Either the new wirless driver for the laptop that is furthest away or hard resetting the router improved the signal quality on it by 10. My wireless speed just fell from 300Mbps to 117Mbps, and its reporting "Severe" interference again. Now it just shot back up to 270Mbps and "Acceptable" interference. Its sticking at 270Mbps for the time being and bouncing between "Severe" and "Acceptable" interference. Seams like its got a mind of its own. Increased signal quality on furthest laptop was short lived. It has not fell from a quality of 44 back down to its normal quality of 33.
     
  32. Planiwa

    Planiwa LI Guru Member

    Hm. That channel list doesn't look right. I wonder what country you are set for.

    wl country

    In any case the "out of range" message is clearly wrong.
    I wonder if there is some setting that is keeping this from working properly.

    And interference is back at 3 and chanim_mode is back at 1.
    And the wl sta_info command seems to have a different format. Sigh.
     
  33. Rocky Grim

    Rocky Grim Networkin' Nut Member

    The country is Singapore which is the default for Toastman builds. He also uses a power level of 0. Should I change it to USA? What do you recommend for power level? I will run the commands again after these changes.
     
  34. Planiwa

    Planiwa LI Guru Member

    wl country US

    wl txpwr

    (that will show the power setting)
     
  35. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Should I enter the wl chanim_mode 0 and wl interference 0 commands again as well?
    Ok set back to USA.
    wl txpwr - 31.75 dBm = 1496 mw.

    1 2 3 4 5 6 7 8 9 10 11
    No scan in progress.
    current mac channel 8
    target channel 8
    wl: Not In Range
    CHANIM mode: detect + act.
    Auto Wireless LAN Interference mitigation is enabled and not active. (mode 3)
    -86

    Noise: -86
    RSSI idleS assocS TX-P TX-F RXU-P RXMB-P TXkb/s RXkb/s + MAC IP Hostname
    -47 1 342 0603 N 48 0 56 8 130000 130000 56 0 . :E7 .6 Dish-Network
    -51 6 323 0603 N 6096 7 3297 95 1000 150000 3361 0 . :C4 .4 Rocky-LT
    -56 4 342 0603 N 5 0 68 25 1000 150000 25 0 .

    This isn't making any dang sense. Still getting the "Not In Range" message. Also, even with the country mode set to USA the wireless speed is 130Mbps and boucing between "Severe" and "Acceptable". The closest wireless computer now has a signal quality similar to the farthest =( I just don't get this.
     
  36. Planiwa

    Planiwa LI Guru Member

    When you do a wireless survey, do you see (m)any radios with an RSSI > -65?

    I would think that a power level of 42 should be enough:

    wl txpwr 42

    Whatever the actual power is (not really 1.496W) is sure to cause signal distortion.

    Yes, reset those IM settings to 0.
     
  37. Rocky Grim

    Rocky Grim Networkin' Nut Member

    There are none under -65. There are 17 networks I was able to find. There is one that is -75. The rest are between -85 and -95.

    txpwr is set now to 42

    I placed the IM settings into Firewall_Up as you explained earlier. However, only the one setting chanim_mode actually works. The other one wl interference changes back to the default (mode 3) after a bit.

    1 2 3 4 5 6 7 8 9 10 11
    No scan in progress.
    current mac channel 8
    target channel 8
    0
    CHANIM mode: disabled.
    Auto Wireless LAN Interference mitigation is enabled and not active. (mode 3)
    -86

    Noise: -86
    RSSI idleS assocS TX-P TX-F RXU-P RXMB-P TXkb/s RXkb/s + MAC IP Hostname
    -44 48 639 0603 N 45 0 21 107 1000 121500 125 0 . :C4 .4 Rocky-LT
    -48 4 640 0603 N 79 0 98 23 130000 144445 100 0 . :E7 .6 Dish-Network
    -58 18 609 0603 N 12 0 138 60 135000 150000 64 0 .

    This is using channel 6. Wireless speed is 130Mbps and interference is "Acceptable".
     
  38. mvsgeek

    mvsgeek Addicted to LI Member

    I ran the following, and got "wl: Not in range" for all but channel 1 (the active channel) :

    for C in $(wl channels);do
    echo $(wl chanim_state $C)
    done

    After running

    wl scan

    the same code returned zero values for all 13 channels. Looks like a "wl scan" initializes some stuff that the "wl chanim_state" command requires.
     
  39. Planiwa

    Planiwa LI Guru Member

    Yes, wl tends to revert to 3 on its own. I have a process that watches this. I suppose if that keeps happening you could make a Scheduled script that resets it every 5 minutes.

    I also made the following more robust:

    Code:
    for m in $(wl assoclist|sed 's/assoclist//');do
      set -- $(arp|grep $m); HN=${1%.*}; IP=${2%)}; MM=${m##*:}
      eval MIH$MM=\":$MM .${IP##*.} $HN\"
    done
     
     
    echo
    eval $( wl assoclist |sed 's/assoclist \(...............\)\(..\)/echo -n "\2 "; wl rssi \1\2 /'|sh|sort\
    |sed -e 's/^/RSSI/' -e 's/ /=/')
     
    echo Noise: $(wl noise)
    echo "RSSI idleS assocS    TX-P  TX-F    RXU-P RXMB-P  TXkb/s RXkb/s + MAC  IP  Hostname"
     
    for i in $(wl assoclist| sed 's/assoclist//')
    do
      MAC2=${i##???????????????}
      eval echo -n \$RSSI$MAC2
      LINES="$(wl sta_info $i|egrep 'seconds|tx|rx|N_CAP')"
      NCAP="$(echo "$LINES"|grep N_CAP|tr -d -c 'N')"
      set -- $(echo "$LINES"|grep -v N_CAP| tr -d -c '0123456789 ')
      printf "  %4s %6s %8s %5s  %7s %6s  %6s %6s %1s " $* $NCAP
      eval echo \$MIH$MAC2
    done |sort
    
    Your signals are strong, your noise is low, and there is no interference from other WiFi.

    Congratulations.
     
  40. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Sweet thanks a lot for your help! I greatly appreciate it. Thanks for taking the time to help me out. Do you think I should add a script to stop that one setting from reverting? If so how would I go about doing that, and should I also put it in firewall up?
     
  41. Planiwa

    Planiwa LI Guru Member

    @ mvsgeek -- Hm. I used to think that that might be the case, although the "nondocumentation" doesn't actually say it. Then I concluded that only

    wl scanresults

    requires a prior

    wl scan

    and nowhere does it give a hint as to "how prior".


    My problem is that there is now so much automatic wl monitoring that whatever I do, there was always a recent scan.

    So it could well be that a scan is required, and I haven't noticed that because of all the autoscans that have been running in the past month or so. :) :)


    The big question -- how long to wait for scan to finish.
     
  42. Planiwa

    Planiwa LI Guru Member

    If it keeps reverting to 3, I would put the wl reset commands into Scheduler, running every 10 minutes:

    Then you can take it out of the FW-Up script.

    Oh, but first you want to save it:

    nvram set wl0_mitigation=0
    nvram commit

    It may stay put after that, and you won't need to redo it every few minutes.
     
  43. mvsgeek

    mvsgeek Addicted to LI Member

    @planiwa - lol yes the wl "nondocumentation" is certainly the exception which proves the "RTFM" rule.

    My latest encounter is with the "wl assoclist" command, but I won't bore you with the details. Suffice to say that the -i and -a arguments no workee for me.

    My test of the "wl scan" as described above was on a router which hasn't been rebooted in 32 days, and probably hadn't had a "wl scan" run since the last reboot until I ran one a little while ago to test my theory.

    Thanks for your excellent research into the baffling labyrinth that is the "wl" command!
     
  44. Planiwa

    Planiwa LI Guru Member

    OK -- I measured it. wl scan takes less than half a second on an RT-N16.
    So, sleep 1 should be plenty.

    @Rocky -- try this for a list of interfered channels:

    wl scan; sleep 1; wl channels; for C in $(wl channels);do echo -n $(wl chanim_state $C) ""; done; echo
    @ mvsgeek -- I haven't tried using driver adapters with assoclist.
     
  45. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Planiwa is this how to add the commands? It didn't work for me. Still stuck in mode 3.

    I think I did something wrong. Can you tell me if this is right?

    Under scheduler
    wl chanim_mode 0
    wl interference 0

    Type into system/command
    nvram set wl0_mitigation=0
    nvram commit

    Remove from firewall_up

    Is this the way it should be?

    This is what I got typing in the command you posted above for interfered channels.
    1 2 3 4 5 6 7 8 9 10 11
    0 0 0 0 1 0 0 0 0 1 0

    It looks like I got it to work. It is reporting mode 0 now. I think when I first checked I didn't allow it 10 min.
    US (US/0) UNITED STATES
    1 2 3 4 5 6 7 8 9 10 11
    No scan in progress.
    current mac channel 8
    target channel 8
    CHANIM mode: disabled.
    All interference mitigation is disabled. (mode 0)
    Interference override disabled.
    -87
     
  46. Rocky Grim

    Rocky Grim Networkin' Nut Member

    Well the wl commands are working still. However, this morning I am having problems once again. Wireless speeds are back down. This time to an all time low. I am only getting 11Mbps. It says the interference level is acceptable though. I don't understand this.
     

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