Example of attempting to obtain 50Mbps throughput on point-to-point links:
- The actual throughput bit-rate is about half of the bitrate shown in Ubiquiti AirControl
- If the radio signal strength is showing very good (i.e., -64 dbm) but the throughput is much lower than your expectation, then the problem is interference.
- CCQ is the best benchmark for interference:
- 98 – 100 CCQ is very good.
- 50 – 70 CCQ is bad and indicates a lot of re-transmissions
- 71 to 97 is between good and bad
- Falling CCQ is indication of increasing interference in an area.
- CCQ is not the percentage of packets that are passing successfully to the other side of the link, but there is correlation between a high CCQ and the percentage of packets that are passing through the link.
- Ubiquiti POE switches have default throughput set at 10MBps: Of course, this would be the limitation if you are using a Ubiquiti POE switch and have not changed this setting to 100Mbps.
Another potential solution: Wide Channel: Bond two channels with 20Mbps each, to make one Wide Channel with 40Mbps
- Wide Channel is not a configuration option in AirControl
- Wide Channel is more susceptible to interference
-64 dbm signal strength is the most optimum in any link