Software Guide

Troubleshooting
Tsunami
®
800 & 8000 Series - Software Management Guide 281
8.7 Wired (Ethernet) Interface Validation
Interference issues
due to wider beam
width of the antenna
`
MP-825-CPE-50, MP-825-SUR-50
+
, QB-825-EPR/LNK-50, and
QB-825-EPR/LNK-50
+
uses a wider beam width antenna (up to 38
o
) with a
gain of 15dBi. Due to its wider beam width, it may pick up more interfering
signals and may report large number of errors compared to other Tsunami
products. Wireless interference may also lead to:
– SNR value fluctuations between the Antenna (A1/A2) ports
– DDRS operation at lower data rates
– Higher number of PHY errors which may result in false RADAR detection in
DFS bands
`
To overcome these issues, use a spectrum analyzer and switch to a noise-free
channel.
Problem Solution
Wired (Ethernet)
Interface Validation
Run iperf commands
`
Use iperf commands with –w option as 202k. The throughput is expected to be
equal in both directions and should be comparable from laptop to laptop or desktop
to desktop performance
If the above throughput value is not in the expected range,
`
Check speed and duplex settings between the device and Personal Computer or
switch or router connected
`
Make sure the connection established is of same speed and full duplex is as expected
(10 or 100 or 1000)
`
With auto negotiation, if you notice this issue, then try manually setting the speed
and duplex
`
Update the Ethernet driver in the Personal Computer to the latest one
Reason(s) Observation