Big differences with nstreme

RouterOS Wireless Networking
1

Hello from Greece,

I have some questions for nstreme.

  1. With nstreme disabled i get very bad results in bandwidth test.
    UDP one way ~ 27Mbps which is ok, but in UDP both, TCP one way and TCP both the results are very bad.
    Also, during the test, the CCQ drops from 90 to 10-20%, the rates from 54Mbps drops down to 6Mbps and the ping is too bad.

With nstreme enabled the results are OK.
UDP send & receive ~ 37Mbps
UDP both ~ 19Mbps
TCP send & receive ~ 24-30Mbps
TCP both ~ 10-15Mbps

During the test, the CCQ is 100%, the rates are at 54Mbps all the time and the ping is good (20-100ms).

I’m using 433ah + wistron cm9, offset dishes 80x85cm, hand maded feeders, 5.3km distance, tx power at 0dBm, -65dB signal strength and i have clear line of sight.

  1. The only problem that i have with enabled nstreme is when i make a change in the AP (for example increasing the tx power), the client connects in about 1 minute. During this time i see in the log some “deauth”. When i make a change in the client, the ap connects immediatly.

I’m using WPA2 PSK encryption, ap-bridge - station pseudobridge.

Do you have any ideas for these 2?

2

try aes encryption instead of psk.
aes is hardware encryption while psk is software encryption.
making aes more efficient.

You can also try specifying appropriate frequencies in a scan list, which will shorten the reconnect delay.

3

PSK is not encryption but authentication method.

encryption: AES or TKIP
authentication PSK or EAP

4

tgrand i use wpa2 psk aes and in the scan list i have put only the frequency i use.

cieplik206 is correct.

Do you have any other ideas for my 2 questions?

5

Try unselecting some of your lowest datarates.
Retransmits may cause datarate scaling. which will at times be worse for performance than the retransmits.

I recommend supporting the lowest rate.

6

I have tried all the combinations of data rates (and default) and always the same problem. When i make a change from ap side, the client reconnects after 1min.