Bitrate of non-3GPP is low while using iperf3 biniding to gretun-id-2 ip

General Discussions
#1

Hi there,
I am trying to do some test with the connection between UE and free5gc via non-3GPP. Just normal setup with n3iwue (v1.0.0), free5gc (v.3.4.0)

And when I want to have the data going from gretun-id-2 interface, it just provides a bitrate about 3-4 Mbits/s. It’s pretty low, right? Do you guys have the same bitrate, or did I do something wrong? Any suggestions for better bitrate?
I used on client:
iperf3 -c <server_ip> -B <gretun-id-2_ip> -t 20

#2

Hi @hien-ngv,
Sorry for the late reply.
You can try to modify the buffer size, window size, and MSS of iperf3.
e.g. iperf3 -c <server_ip> -B <gretun-id-2_ip> -t 20 -l 1024 -M 1200 -w 1200

You may refer to the GitHub issue below.

If you have any question, feel free to let me know.
Best regards.

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