Wifi Connection Lost: And Solution

Discussion in 'Asuswrt-Merlin' started by professordave, Feb 25, 2013.

  1. professordave

    professordave Occasional Visitor

    Joined:
    Jan 22, 2013
    Messages:
    29
    Problem: After a few hours, one of two wireless devices are unable to reconnect to wifi network, to temporarily fix, either a power cycle of the device or the router is needed, then the device is able to reconnect to the network.

    The devices that are having problems are wireless audio streamers, Logitech Squeezebox Radios, I have two. Usually, one of them loses wifi connection, not both, and it seems random which one loses the wireless connection.

    Router: ASUS RT-AC66U, merlin 3.0.0.4.270.24

    Background: Have other wireless devices in the house that NEVER lose connections, tivo, wireless scale, Squeezebox Touch (a different model then the squeezebox radios listed above, only have 1 of this one) all retain wireless connection over time and do not need to be power cycled to work

    I try and leave all devices using regular DHCP if possible, the less I have to tweak the network the better. I have setup 2 static DHCP reservations for a Synology NAS and an imac.


    Settings that seem to fix the problem:

    1) Giving them each a unique host name in their /etc/hostname file, the squeezebox radios are tiny linux boxes:
    *)enable ssh on each radio, then went into both radios and set the name in the /etc/hostname file
    *) RedSqueezeboxRadio
    *) BlackSqueezeboxRadio

    This seems to have fixed the problem, it has only been a day, so we will see.


    2) Turn off automatic channel selection, picked a channel at random, in this case channel 9.
    This also seemed to fix the problem. But only left this setting enabled for a day, so do not know for sure that this setting fixed the problem.

    What did NOT work:
    I set up a static DHCP reservation in the router for 1 of the radios. Within a few hours, both were unable to reconnect to the network.
     
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  3. joegreat

    joegreat Very Senior Member

    Joined:
    Jan 9, 2013
    Messages:
    551
    Location:
    Vienna, Austria
    Hi,

    What comes to my mind when I read thru your problem and solution description is:
    Can it be that you have many / heavy other WLANs in your neighborhood?

    Can you scan WLANs with inSSIDer on your Notebook/PC or via a Android device with Wifi Analyzer.
    There you can see which channel is free and this one you should use as fixed channel on the router. Also you should set 20 MHz only bandwidth.
    If you are not able to find a single free channel (remember that you need +/- 1 channel free on left and right), you should enable also the Enhanced Interference Management on the 'Professional' page.

    Maybe this would give you a more stable WLAN connection for you streaming clients.

    By the way: Did you check the reception levels of the two devices?
    You can see them on the 'System Log' on the third tab 'Wireless Log'. The rssi level should be higher (means lower '- value') then the noise level of the WLAN router (by approx. 10 dBm at least).

    With kind regards
    Joe :cool:
     
    Last edited: Feb 25, 2013
  4. professordave

    professordave Occasional Visitor

    Joined:
    Jan 22, 2013
    Messages:
    29
    Okay, here are the stats, the two devices that are giving me trouble are the red and black squeezeboxes.

    I am able to stream with other clients, for example, I have a roku 2xs and am able to stream videos and it never loses the wifi connection.

    I have the stats listed twice, once before I hit the refresh, with some ?? listed, and then again after I hit the refresh button.



    SSID: *****
    RSSI: 0 dBm SNR: 0 dB noise: -63 dBm Channel: 11u
    BSSID: 30:85:A9:E8:E9:58 Capability: ESS ShortSlot




    Mode : AP Only

    Stations List Rx/Tx speed rssi state
    --------------------------------------------------------------------------------------
    00:04:20:28:02:49 192.168.1.146 BlackSqueezebox 1/48 Mbps 9 dBm assoc auth
    F0:CB:A1:0B:9E:44 192.168.1.105 * ??/65 Mbps 50 dBm assoc auth
    00:04:20:23:8D:96 192.168.1.69 SqueezeboxTouch 2/54 Mbps 9 dBm assoc auth
    00:04:20:2C:82:92 192.168.1.195 RedSqueezeboxRa 1/48 Mbps ?? dBm assoc auth
    00:24:81:BA:9D:43 TIVO-6580101806 36/1 Mbps ?? dBm assoc auth
    B8:3E:59:00:4C:D5 192.168.1.213 NP-13G2DX004548 ??/65 Mbps -30 dBm assoc auth
    00:12:0E:6F:B7:08 192.168.1.79 * 1/11 Mbps ?? dBm assoc auth

    SSID: *****
    RSSI: 0 dBm SNR: 0 dB noise: -84 dBm Channel: 36/80
    BSSID: 30:85:A9:E8:E9:5C Capability: ESS

    Mode : AP Only

    Stations List Rx/Tx speed rssi state
    --------------------------------------------------------------------------------------
    D8:A2:5E:47:CE:C5 192.168.1.102 * 26/65 Mbps ?? dBm assoc auth
    00:1F:5B:C9:3D:D1 192.168.1.192 270/81 Mbps ?? dBm assoc auth
    00:11:D9:25:30:F2 192.168.1.145 * 300/270 Mbps ?? dBm assoc auth



    ====
    SSID:****
    RSSI: 0 dBm SNR: 0 dB noise: -62 dBm Channel: 11u
    BSSID: 30:85:A9:E8:E9:58 Capability: ESS ShortSlot

    Mode : AP Only

    Stations List Rx/Tx speed rssi state
    --------------------------------------------------------------------------------------
    00:04:20:28:02:49 192.168.1.146 BlackSqueezebox 12/36 Mbps -35 dBm assoc auth
    F0:CB:A1:0B:9E:44 192.168.1.105 * 65/1 Mbps -55 dBm assoc auth
    00:04:20:23:8D:96 192.168.1.69 SqueezeboxTouch 2/11 Mbps -28 dBm assoc auth
    00:04:20:2C:82:92 192.168.1.195 RedSqueezeboxRa 18/36 Mbps -30 dBm assoc auth
    00:24:81:BA:9D:43 TIVO-6580101806 24/1 Mbps 1 dBm assoc auth
    B8:3E:59:00:4C:D5 192.168.1.213 NP-13G2DX004548 65/65 Mbps -29 dBm assoc auth
    00:12:0E:6F:B7:08 192.168.1.79 * 9/1 Mbps -45 dBm assoc auth

    SSID: *****
    RSSI: 0 dBm SNR: 0 dB noise: -84 dBm Channel: 36/80
    BSSID: 30:85:A9:E8:E9:5C Capability: ESS

    Mode : AP Only

    Stations List Rx/Tx speed rssi state
    --------------------------------------------------------------------------------------
    D8:A2:5E:47:CE:C5 192.168.1.102 * 26/6 Mbps -63 dBm assoc auth
    00:1F:5B:C9:3D:D1 192.168.1.192 270/54 Mbps -57 dBm assoc auth
    00:11:D9:25:30:F2 192.168.1.145 * 300/270 Mbps -54 dBm assoc auth
     
  5. joegreat

    joegreat Very Senior Member

    Joined:
    Jan 9, 2013
    Messages:
    551
    Location:
    Vienna, Austria
    Hi,

    Yep, your client signals are all in a good signal level/range. :)

    What about the free channel theory for the 2.4G WLAN network? :rolleyes:

    With kind regards
    Joe :cool:
     

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