433AH + XR5 + 3' dish - bandwidth uneven

RouterOS Wireless Networking
1

Hi all,

I’m having an interesting problem that I don’t understand.

The setup: 433AH + XR5 + 3ft. dish on each side. PTP nstreme.
Distance ~ 5 miles
Everything looks great - signal, s/n, CCQ.

The problem is with bandwidth. The tests i do with two routers (493AH & x86 1Ghz) attached to the radios.

TX: udp or tcp ~ 24 Mbps (CPU limited, i believe (433AH running @ 100%))
RX: udp ~ 44 Mbps - TCP ~ 8 Mbps!!!

I don’t understand why this happens. MTU on all interfaces (routers & radios) are at 1500. Should i try 1480 on wireless interfaces? Could that be it?
I have NO errors on any interface either. NO ques either. Conntrack is off on both radios.

Thanks for your help.
ptp nstreme.jpg

2

post more info about the config of the wlans please

3

If your CCQ stays at 100%/100% on both sides while you are doing your TCP tests then we can safely rule out a link issue.

I would then look at perhaps doing a bandwidth test using devices other than the units themselves.

Also, post more about your config and settings.

4

I will put command and screenshots (further down).

This is one of them:

/interface bridge
add admin-mac=00:00:00:00:00:00 ageing-time=5m arp=enabled auto-mac=yes
comment=“” disabled=no forward-delay=15s l2mtu=1526 max-message-age=20s
mtu=1500 name=bridge1 priority=0x8000 protocol-mode=none
transmit-hold-count=6
/interface ethernet
set 0 arp=enabled auto-negotiation=yes comment=“” disabled=no full-duplex=yes
l2mtu=1526 mtu=1500 name=ether1_RTR speed=
100Mbps
/interface wireless
set 0 ack-timeout=dynamic adaptive-noise-immunity=none allow-sharedkey=no
antenna-gain=0 antenna-mode=ant-a area=“” arp=enabled band=5ghz
basic-rates-a/g=6Mbps burst-time=disabled comment=“” compression=no
country=no_country_set default-ap-tx-limit=0 default-authentication=yes
default-client-tx-limit=0 default-forwarding=yes dfs-mode=none
disable-running-check=no disabled=no disconnect-timeout=3s
frame-lifetime=0 frequency=5180 frequency-mode=manual-txpower hide-ssid=
no hw-retries=4 max-station-count=2007
mode=bridge mtu=1500 name=wlan1 noise-floor-threshold=default
on-fail-retry-time=100ms periodic-calibration=default
periodic-calibration-interval=60 preamble-mode=both
proprietary-extensions=post-2.9.25 radio-name=link rate-set=default
scan-list=default security-profile=default ssid=SSID
station-bridge-clone-mac=00:00:00:00:00:00 supported-rates-a/g=
6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps tx-power-mode=
default update-stats-interval=disabled wds-cost-range=50-150
wds-default-bridge=bridge1 wds-default-cost=100 wds-ignore-ssid=no
wds-mode=dynamic wmm-support=disabled
/interface wireless manual-tx-power-table
set wlan1 comment=“” manual-tx-powers=“1Mbps:17,2Mbps:17,5.5Mbps:17,11Mbps:17,
6Mbps:17,9Mbps:17,12Mbps:17,18Mbps:17,24Mbps:17,36Mbps:17,48Mbps:17,54Mbps
:17,HT20-1:0,HT20-2:0,HT20-3:0,HT20-4:0,HT20-5:0,HT20-6:0,HT20-7:0,HT20-8:
0,HT40-1:0,HT40-2:0,HT40-3:0,HT40-4:0,HT40-5:0,HT40-6:0,HT40-7:0,HT40-8:0”
/interface wireless nstreme
set wlan1 comment=“” disable-csma=no enable-nstreme=yes enable-polling=yes
framer-limit=4000 framer-policy=best-fit
/interface bridge port
add bridge=bridge1 comment=“” disabled=no edge=auto external-fdb=auto
horizon=none interface=ether1_RTR path-cost=10 point-to-point=auto
priority=0x80
add bridge=bridge1 comment=“” disabled=no edge=auto external-fdb=auto
horizon=none interface=ether2 path-cost=10 point-to-point=auto priority=
0x80
add bridge=bridge1 comment=“” disabled=no edge=auto external-fdb=auto
horizon=none interface=ether3 path-cost=10 point-to-point=auto priority=
0x80
add bridge=bridge1 comment=“” disabled=no edge=auto external-fdb=auto
horizon=none interface=wlan1 path-cost=10 point-to-point=auto priority=
0x80
/interface bridge settings
set use-ip-firewall=no use-ip-firewall-for-pppoe=no use-ip-firewall-for-vlan=
no
/interface wireless align
set active-mode=yes audio-max=-20 audio-min=-100 audio-monitor=
00:00:00:00:00:00 filter-mac=00:00:00:00:00:00 frame-size=300
frames-per-second=25 receive-all=no ssid-all=no

And this is the other:

/interface bridge
add admin-mac=00:00:00:00:00:00 ageing-time=5m arp=enabled auto-mac=yes
comment=“” disabled=no forward-delay=15s l2mtu=1526 max-message-age=20s
mtu=1500 name=bridge1 priority=0x8000 protocol-mode=none
transmit-hold-count=6
/interface ethernet
set 0 arp=enabled auto-negotiation=yes comment=“” disabled=no full-duplex=yes
l2mtu=1526 mtu=1500 name=ether1_RTR speed=
100Mbps
/interface wireless
set 0 ack-timeout=dynamic adaptive-noise-immunity=none allow-sharedkey=no
antenna-gain=0 antenna-mode=ant-a area=“” arp=enabled band=5ghz
basic-rates-a/g=6Mbps burst-time=disabled comment=“” compression=no
country=no_country_set default-ap-tx-limit=0 default-authentication=yes
default-client-tx-limit=0 default-forwarding=yes dfs-mode=none
disable-running-check=no disabled=no disconnect-timeout=3s
frame-lifetime=0 frequency=5180 frequency-mode=manual-txpower hide-ssid=
no hw-retries=4 max-station-count=2007
mode=station-wds mtu=1500 name=wlan1 noise-floor-threshold=default
on-fail-retry-time=100ms periodic-calibration=default
periodic-calibration-interval=60 preamble-mode=both
proprietary-extensions=post-2.9.25 radio-name=link rate-set=default
scan-list=default security-profile=default ssid=SSID
station-bridge-clone-mac=00:00:00:00:00:00 supported-rates-a/g=
6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps tx-power-mode=
default update-stats-interval=disabled wds-cost-range=50-150
wds-default-bridge=bridge1 wds-default-cost=100 wds-ignore-ssid=no
wds-mode=dynamic wmm-support=disabled
/interface wireless manual-tx-power-table
set wlan1 comment=“” manual-tx-powers=“1Mbps:17,2Mbps:17,5.5Mbps:17,11Mbps:17,
6Mbps:17,9Mbps:17,12Mbps:17,18Mbps:17,24Mbps:17,36Mbps:17,48Mbps:17,54Mbps
:17,HT20-1:0,HT20-2:0,HT20-3:0,HT20-4:0,HT20-5:0,HT20-6:0,HT20-7:0,HT20-8:
0,HT40-1:0,HT40-2:0,HT40-3:0,HT40-4:0,HT40-5:0,HT40-6:0,HT40-7:0,HT40-8:0”
/interface wireless nstreme
set wlan1 comment=“” disable-csma=no enable-nstreme=yes enable-polling=yes
framer-limit=4000 framer-policy=best-fit
/interface bridge port
add bridge=bridge1 comment=“” disabled=no edge=auto external-fdb=auto
horizon=none interface=ether1_RTR path-cost=10 point-to-point=auto
priority=0x80
add bridge=bridge1 comment=“” disabled=no edge=auto external-fdb=auto
horizon=none interface=ether2 path-cost=10 point-to-point=auto priority=
0x80
add bridge=bridge1 comment=“” disabled=no edge=auto external-fdb=auto
horizon=none interface=ether3 path-cost=10 point-to-point=auto priority=
0x80
add bridge=bridge1 comment=“” disabled=no edge=auto external-fdb=auto
horizon=none interface=wlan1 path-cost=10 point-to-point=auto priority=
0x80
/interface bridge settings
set use-ip-firewall=no use-ip-firewall-for-pppoe=no use-ip-firewall-for-vlan=
no
/interface ethernet mirror
set mirror-port=none source-port=none
/interface wireless align
set active-mode=yes audio-max=-20 audio-min=-100 audio-monitor=
00:00:00:00:00:00 filter-mac=00:00:00:00:00:00 frame-size=300
frames-per-second=25 receive-all=no ssid-all=no


The links are basically the same. One is running bridge (WDS+nstreme) and the other is in station wds + nstreme.
I think i put all the info now. Let me know if there is anything else that i should post.
Thanks.

5

The speeds I reported are from devices other than the radios.

6

Here are the screenshots.
ScreenShot003.jpg
ScreenShot002.jpg
ScreenShot001.jpg

7

Some more.
ScreenShot006.jpg
ScreenShot005.jpg
ScreenShot004.jpg

8

This is off of “station WDS” radio.
ScreenShot007.jpg

9

Anyone has any idea???

10

decrease tx-power on both sides, to obtain -60 / -64dbm.

regards

11

I had the boards in the office and put the pigtails close to each other (the signals being the same ~ -45-50, with ~ 50db S/N) and ran bandwidth tests and the results for the TCP RX were ~ 35 Mbps.

I will try setting the signals lower to see if RX TCP transfers improve. I will post results later in the day.
Thanks.

12

Signals adjusted to -60 to -65, signal to noise now went to about 30db, BUT no change in bandwidth. It’s still maxing at 8 Mbps.