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https://iperf.fr/

Speed test:

Start an iperf UDP server:       # iperf –u –p <listening port> –s           # iperf –u –p 80 –s

Then on the client:                   # iperf –u –p <listening port> –s–s           # iperf –u -p 80 –c 10.1.0.3  –b 200m

Run an iperf UDP stream with at specific rate (in Mbps):

# iperf –u –c <server @> -p <server port> -b <X>m -d

-u : UDP packet , best for bandwitdh test
-c it's the Client side
-s it's the Server side
-p destination port number on the client side
( or listening port number on the server side)
-b for bandwidth ( default 1m)  
-d for dualtest ( bi-directional)  >> becarefull at the ID number in the report

Single test: Client to Server

1- note the different port for the signaling and the data traffic?????

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