interface dropping

RouterOS Wireless Networking
1

Hi,

Client Side:

status: connected-to-ess
band: 5ghz-10mhz
frequency: 5175MHz
wireless-protocol: nstreme
tx-rate: 27.0Mbps
rx-rate: 9.0Mbps
ssid: MYAP01
bssid: 00:0C:42:66:5E:40
radio-name: MYAP01
signal-strength: -39dBm
signal-strength-ch0: -39dBm
tx-signal-strength: -29dBm
tx-signal-strength-ch0: -29dBm
noise-floor: -119dBm
signal-to-noise: 80dB
tx-ccq: 100%
rx-ccq: 71%
p-throughput: 15001
overall-tx-ccq: 100%
authenticated-clients: 1
wds-link: no
bridge: no
nstreme: yes

AP Side:

status: running-ap
band: 5ghz-10mhz
frequency: 5175MHz
wireless-protocol: nstreme
noise-floor: -118dBm
overall-tx-ccq: 66%
registered-clients: 1
authenticated-clients: 1
polling: yes
csma-disabled: no
current-tx-powers: 6Mbps:22(22/22),9Mbps:22(22/22),12Mbps:22(22/22),
18Mbps:22(22/22),24Mbps:22(22/22),36Mbps:20(20/20),
48Mbps:19(19/19),54Mbps:18(18/18)
current-ofdm-errors: 243
notify-external-fdb: no

Now, I know the signal is insanely strong, but every once in a while, the client disconnects from the AP

09:39:40 wireless,info 00:0C:42:66:5E:40@CLIENT: lost connection, received deauth: class 2 frame received (6)
09:39:50 wireless,info 00:0C:42:66:5E:40@CLIENT established connection on 5175, SSID MYAP01
09:47:36 wireless,info 00:0C:42:66:5E:40@CLIENT: lost connection, received deauth: authentication not valid (2)
09:47:46 wireless,info 00:0C:42:66:5E:40@CLIENT established connection on 5175, SSID MYAP01

It also always take exactly 10 seconds to re-associate - every time. Any ideas as to why it is disconnecting, or what can be done to stabalize it? The link itself is very short, not even 5KM give or take. Clear line of sight, small obstruction blocking a small area in the frenzil zone. Given the absolutely great CCQ and Signal Strength, I’m a bit baffled as to the high SNR. I did do scan’s from both sides, and I am the only visible AP on the frequency that the AP or Client Mikrotik picks up. Spectrum scans also indicate the frequency to be clean.

I’m a bit lost here…

2

the first step in troubleshooting would be to turn the power down. Put it somewhere in the 50s or 60s at least. Right now you are shouting so loud at the other side its probably distorting. If you were at a rock concert in front of the speakers 24x7 would you disconnect every once in a while? : ) Maybe you are also causing lots of reflections that are cancelling signal out because its so strong.

3

Ditto. That’s way too much gain. Anything over -50 is too much…and that’s pretty hot. -60 to -70 is your sweet spot.

4

Thanks guys…

Running at about -65 to -68 currently, ccq in the 70% to 90%. Will continue to monitor the link tomorrow when there’s traffic on it again. Will shout if the issue persist.

Something tells me my antennae are too big :slight_smile: Went from 17 to 6 currently for manual-tx-power… :open_mouth:

5

Hi Guys,

Unfortunately, it seems to still continue…

09:10:11 wireless,info 00:0C:42:66:5E:40@MYCLIENT: lost connection, received deauth: class 2 frame received (6)
09:10:21 wireless,info 00:0C:42:66:5E:40@MYCLIENT established connection on 5175, SSID MYAP

Station Details:

status: connected-to-ess
band: 5ghz-10mhz
frequency: 5175MHz
wireless-protocol: nstreme
tx-rate: 12.0Mbps
rx-rate: 9.0Mbps
ssid: MYAP
bssid: 00:0C:42:66:5E:40
radio-name: MYAP
signal-strength: -65dBm
signal-strength-ch0: -65dBm
tx-signal-strength: -67dBm
tx-signal-strength-ch0: -67dBm
noise-floor: -118dBm
signal-to-noise: 53dB
tx-ccq: 50%
rx-ccq: 82%
p-throughput: 7860
overall-tx-ccq: 50%
authenticated-clients: 1
wds-link: no
bridge: no
nstreme: yes
polling: yes
csma-disabled: no
framing-mode: none
routeros-version: 5.8
last-ip: 10.248.2.39
802.1x-port-enabled: yes
management-protection: no
compression: no
current-tx-powers: 6Mbps:6(6/6),9Mbps:6(6/6),12Mbps:6(6/6),18Mbps:6(6/6),24Mbps:6(6/6),36Mbps:6(6/6),48Mbps:6(6/6),54Mbps:6(6/6)
current-ofdm-errors: 197
notify-external-fdb: no

What else could we look at?

6

you have excellent signal, however the data rates and ccq’s are very low. i would run a spectrum analysis to find out whats on what frequency and move to another channel.