We encounter a big problem with a link with B5 in PTP mode with tcp dowmstream.
The firmware is 1.4.4 on each B5.
We made a multiple tests with IPERF on each side of the link.
Our configuration is :
- Switch ubiquiti Thoughswitch 8 ports with B5 in AP <- 3.1 miles 4.9km -> B5 in Station and Switch ubiquiti Thoughswitch 8 ports.
Link parameter : Gender 50/50 TDMA 8ms Rate PER Phy Conservative
The Eth is 1G on each device.
Line of sight very good fresnel zone.
Ping : 20 ms up and down.
The link hasn’t any problem with Iperf test on UDP and TCP upload stream ( Station to Access Point) : our test 100 Mb upstream in TCP.
The link has few problem with Iperf test on UDP and a very low capacity on TCP dowmstream. (Access Point to Station) : and max 5 - 6 Mb - downstream in TCP.
We made a lot of tests with them but nothing change.
Fisrt we used 2x80 Mhz feature and after we test 1x80 Mhz. Same result.
Recently we had installed a B5 link which presents a similar problem of significant dissimetry between the upstream and downstream rates in TCP with IPERF. ( 100 Mb vs 1 Mb) with the same features.
We had to stop this link…
But we also have other older B5 links that have been updated to firmware 1.4.4, after their installation and we haven’t found this type of problem.
Do we have to downgrad to 1.4.1 version firmware ?
Can you help us?