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fdroid2019-03-30 12:59:27
fdroid, 2019-03-30 12:59:27
Why low TX CCQ on Wi-Fi bridge?
Bridge of two SXT 2, distance about 120m.
192.168.50.5 - base
192.168.50.6 - second point
Screenshot from the second point: 
Pings periodically increase:
[[email protected]_Base] > ping 192.168.50.6
SEQ HOST SIZE TTL TIME STATUS
0 192.168.50.6 56 64 4ms
1 192.168.50.6 56 64 2ms
2 192.168.50.6 56 64 3ms
3 192.168.50.6 56 64 3ms
4 192.168.50.6 56 64 3ms
5 192.168.50.6 56 64 3ms
6 192.168.50.6 56 64 10ms
7 192.168.50.6 56 64 5ms
8 192.168.50.6 56 64 1ms
9 192.168.50.6 56 64 9ms
10 192.168.50.6 56 64 2ms
11 192.168.50.6 56 64 3ms
12 192.168.50.6 56 64 2ms
13 192.168.50.6 56 64 2ms
14 192.168.50.6 56 64 2ms
15 192.168.50.6 56 64 3ms
16 192.168.50.6 56 64 2ms
17 192.168.50.6 56 64 2ms
18 192.168.50.6 56 64 20ms
19 192.168.50.6 56 64 2ms
sent=20 received=20 packet-loss=0% min-rtt=1ms avg-rtt=4ms max-rtt=20ms
SEQ HOST SIZE TTL TIME STATUS
20 192.168.50.6 56 64 2ms
21 192.168.50.6 56 64 2ms
22 192.168.50.6 56 64 2ms
23 192.168.50.6 56 64 1ms
24 192.168.50.6 56 64 2ms
25 192.168.50.6 56 64 3ms
26 192.168.50.6 56 64 3ms
27 192.168.50.6 56 64 2ms
28 192.168.50.6 56 64 3ms
29 192.168.50.6 56 64 2ms
30 192.168.50.6 56 64 2ms
31 192.168.50.6 56 64 2ms
32 192.168.50.6 56 64 1ms
33 192.168.50.6 56 64 1ms
34 192.168.50.6 56 64 2ms
35 192.168.50.6 56 64 3ms
36 192.168.50.6 56 64 2ms
sent=37 received=37 packet-loss=0% min-rtt=1ms avg-rtt=3ms max-rtt=20msBase config:
/interface wireless
set [ find default-name=wlan1 ] adaptive-noise-immunity=ap-and-client-mode \
allow-sharedkey=no ampdu-priorities=0 amsdu-limit=8192 amsdu-threshold=\
8192 antenna-gain=0 area="" arp=enabled arp-timeout=auto band=2ghz-onlyn \
basic-rates-a/g="" basic-rates-b="" bridge-mode=enabled channel-width=\
20/40mhz-Ce compression=no country=no_country_set default-ap-tx-limit=0 \
default-authentication=yes default-client-tx-limit=0 default-forwarding=\
yes disable-running-check=no disabled=no disconnect-timeout=3s distance=\
dynamic frame-lifetime=0 frequency=2412 frequency-mode=superchannel \
frequency-offset=0 guard-interval=any hide-ssid=no ht-basic-mcs=\
mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7 ht-supported-mcs="mcs-0,mc\
s-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mcs-9,mcs-10,mcs-11,mcs-12,m\
cs-13,mcs-14,mcs-15,mcs-16,mcs-17,mcs-18,mcs-19,mcs-20,mcs-21,mcs-22,mcs-2\
3" hw-fragmentation-threshold=disabled hw-protection-mode=none \
hw-protection-threshold=0 hw-retries=7 installation=any \
interworking-profile=disabled keepalive-frames=enabled l2mtu=1600 \
mac-address=B8:69:F4:35:06:34 max-station-count=2007 mode=bridge mtu=1500 \
multicast-buffering=disabled multicast-helper=default name=wlan1 \
noise-floor-threshold=default nv2-cell-radius=30 nv2-downlink-ratio=50 \
nv2-mode=dynamic-downlink nv2-noise-floor-offset=default \
nv2-preshared-key=******** nv2-qos=default nv2-queue-count=2 \
nv2-security=enabled nv2-sync-secret="" on-fail-retry-time=100ms \
preamble-mode=both radio-name=B869F4350634 rate-selection=advanced \
rate-set=configured rx-chains=0,1 scan-list=default secondary-channel="" \
security-profile=default ssid=WB station-bridge-clone-mac=\
00:00:00:00:00:00 station-roaming=enabled supported-rates-a/g="" \
supported-rates-b="" tdma-period-size=2 tx-chains=0,1 tx-power=21 \
tx-power-mode=all-rates-fixed update-stats-interval=disabled vlan-id=1 \
vlan-mode=no-tag wds-cost-range=50-150 wds-default-bridge=bridge1 \
wds-default-cost=100 wds-ignore-ssid=no wds-mode=dynamic \
wireless-protocol=nv2 wmm-support=disabled wps-mode=push-button
/interface wireless manual-tx-power-table
set wlan1 manual-tx-powers="1Mbps:17,2Mbps:17,5.5Mbps:17,11Mbps:17,6Mbps:17,9M\
bps:17,12Mbps:17,18Mbps:17,24Mbps:17,36Mbps:17,48Mbps:17,54Mbps:17,HT20-0:\
17,HT20-1:17,HT20-2:17,HT20-3:17,HT20-4:17,HT20-5:17,HT20-6:17,HT20-7:17,H\
T40-0:17,HT40-1:17,HT40-2:17,HT40-3:17,HT40-4:17,HT40-5:17,HT40-6:17,HT40-\
7:17"
/interface wireless nstreme
set wlan1 disable-csma=no enable-nstreme=no enable-polling=yes framer-limit=\
3200 framer-policy=noneSecond point config:
/interface wireless
set [ find default-name=wlan1 ] adaptive-noise-immunity=none allow-sharedkey=\
no ampdu-priorities=0 amsdu-limit=8192 amsdu-threshold=8192 antenna-gain=\
0 area="" arp=enabled arp-timeout=auto band=2ghz-onlyn basic-rates-a/g="" \
basic-rates-b="" bridge-mode=enabled channel-width=20/40mhz-Ce \
compression=no country=russia default-ap-tx-limit=0 \
default-authentication=yes default-client-tx-limit=0 default-forwarding=\
yes disable-running-check=no disabled=no disconnect-timeout=3s distance=\
dynamic frame-lifetime=0 frequency=2412 frequency-mode=superchannel \
frequency-offset=0 guard-interval=any hide-ssid=no ht-basic-mcs=\
mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7 ht-supported-mcs="mcs-0,mc\
s-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mcs-9,mcs-10,mcs-11,mcs-12,m\
cs-13,mcs-14,mcs-15,mcs-16,mcs-17,mcs-18,mcs-19,mcs-20,mcs-21,mcs-22,mcs-2\
3" hw-fragmentation-threshold=disabled hw-protection-mode=none \
hw-protection-threshold=0 hw-retries=7 installation=any \
interworking-profile=disabled keepalive-frames=enabled l2mtu=1600 \
mac-address=B8:69:F4:35:06:22 max-station-count=2007 mode=station-wds \
mtu=1500 multicast-buffering=disabled multicast-helper=default name=wlan1 \
noise-floor-threshold=default nv2-cell-radius=30 nv2-downlink-ratio=50 \
nv2-mode=dynamic-downlink nv2-noise-floor-offset=default \
nv2-preshared-key=******** nv2-qos=default nv2-queue-count=2 \
nv2-security=enabled nv2-sync-secret="" on-fail-retry-time=100ms \
preamble-mode=both radio-name=B869F4350622 rate-selection=advanced \
rate-set=configured rx-chains=0,1 scan-list=default secondary-channel="" \
security-profile=default ssid=WB station-bridge-clone-mac=\
00:00:00:00:00:00 station-roaming=enabled supported-rates-a/g="" \
supported-rates-b="" tdma-period-size=2 tx-chains=0,1 tx-power=17 \
tx-power-mode=all-rates-fixed update-stats-interval=disabled vlan-id=1 \
vlan-mode=no-tag wds-cost-range=50-150 wds-default-bridge=none \
wds-default-cost=100 wds-ignore-ssid=no wds-mode=disabled \
wireless-protocol=nv2 wmm-support=disabled wps-mode=push-button
/interface wireless manual-tx-power-table
set wlan1 manual-tx-powers="1Mbps:17,2Mbps:17,5.5Mbps:17,11Mbps:17,6Mbps:17,9M\
bps:17,12Mbps:17,18Mbps:17,24Mbps:17,36Mbps:17,48Mbps:17,54Mbps:17,HT20-0:\
17,HT20-1:17,HT20-2:17,HT20-3:17,HT20-4:17,HT20-5:17,HT20-6:17,HT20-7:17,H\
T40-0:17,HT40-1:17,HT40-2:17,HT40-3:17,HT40-4:17,HT40-5:17,HT40-6:17,HT40-\
7:17"
/interface wireless nstreme
set wlan1 disable-csma=no enable-nstreme=no enable-polling=yes framer-limit=\
3200 framer-policy=noneBandwith test from base to second point:
[[+comments_count]] answer(s)
@Zarom
@nevzorofff
D
Dmitry Shitskov, 2019-03-30 @Zarom
Air pings are just great.
The 2.4 range is quite busy and many parameters can affect ccq. It may be worth trying to select the least loaded frequency range and fix it on the points. You can also use the nstream protocol instead of nv2. It should work better on point-to-point connections.
And finally, 5 GHz ...
N
Nikolai, 2019-03-30 @nevzorofff
Do you put it in an open field? Noise level -107 at 2.4 looks somehow unrealistic.
Align the signal by polarizations - 3db differences can give a strong drop, somewhere by a factor of two.
The next step is to turn down the power on the transmitters. -60 at the input of the receiver - very good.
And what prevents you from throwing a cable at 120m?
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