I have a backhaul link that has a teriffic TX/RX signal strength and 100% TX/RX CCQ. The link is 8Km and the most I get is TCP 26Mbps both directions half duplex.
Here is my config.
I see many people claiming 50+ Mbps speeds. What am I doing wrong?
/interface wireless
set 0 ack-timeout=dynamic adaptive-noise-immunity=yes 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=no default-client-tx-limit=0
default-forwarding=no dfs-mode=none disable-running-check=no disabled=no disconnect-timeout=3s frame-lifetime=0 frequency=5745
frequency-mode=manual-txpower hide-ssid=no hw-retries=4 mac-address=00:15:6D:63:0F:15 max-station-count=2007 mode=ap-bridge mtu=1600 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=“00156D630F15” rate-set=configured scan-list=default security-profile=default ssid=“xxxxx”
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=none wds-default-cost=100 wds-ignore-ssid=no wds-mode=static wmm-support=disabled
/interface wireless wds
add arp=enabled comment=“” disabled=no master-interface=wlan1 mtu=1500 name=“wds-bh-xxxxx” wds-address=00:15:6D:xx:xx:xx
Connection tracking is on because we use 172.16.XX.XX Ip’s and masq out a single public IP. (I’m not the network guru but that is why I think connection tracking is on.)
EDIT - Actually connection tracking is off on the Backhauls.
I have a similar problem. I use RB133 and never can pass above 22-27 Mbps barrier.
Noticed in this motherboard when I turned on nstreme cpu utilization goes to 45% in idle state, an when I put traffic it stacks into 100%
Im in process of getting a more powerful board, rb333 from provider and I looking forward too to get 54 Mbps. Ill post my results. My questions: Did you check cpu utilization when testing with traffic for this model of motherboard? Also check if modulation stays steady at 48Mbs or 54 Mbps. You can force it with this commands, but if you have bad signal quality the link goes down cos it can´t reach this higher modulations:
/ interface wireless
set band=5ghz
set rate-set=configured
set supported-rates-a/g=48Mbps,54Mbps
set basic-rates-a/g=48Mbps,54Mbps
Also I got my best performance with nstreme configured like this:
/ interface wireless nstreme
set wlan1 enable-nstreme=yes enable-polling=yes framer-policy=best-fit framer-limit=3200
RB133 is a low grade CPE unit ONLY!! Anyone using them for any major link needs a kick in the leg
RB333 should be the way to go but in my opinion they fall short of being a backhaul class board. Build quality is poor and you are forced to use non-release software. The most reliable boards to me are the RB532R5.
My main problem is with the mini-pci slots. They are absolute crap which is the opinion of everyone I talk to. It is a real shame considering the good CPU available. It seems to me that too much penny pinching has taken place somewhere along the line and its coming back to bite.
Sadly this means the boards are not up to scratch IMHO for quality backhaul use. The RB532 does not have this issue to my knowledge and is proof that old ones are the best.
So COME ON MIKROTIK!! Cheap mini-pci is ok for low cost CPE boards but is not acceptable for backhaul grade kit.
