5. Testing UERANSIM against free5GC - anhtien17/free5GC GitHub Wiki

1. Run on free5gc VM

• Run network setting (must do everytime rebooting):

     sudo sysctl -w net.ipv4.ip_forward=1
     sudo iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE
     sudo systemctl stop ufw
     sudo iptables -I FORWARD 1 -j ACCEPT
  

• Run free5gc:

     cd ~/free5gc
     ./run.sh
  

  At this time free5GC has been started.

2. Run on ueransim VM

• Open a Terminal 1, execute nr-gnb and leave it running:

     cd ~/UERANSIM
     sudo build/nr-gnb -c config/free5gc-gnb.yaml
  

• Open a Terminal 2, execute nr-ue and leave it running:

     cd ~/UERANSIM
     sudo build/nr-ue -c config/free5gc-ue.yaml
  

• Open a Terminal 3, ping 192.168.31.101 to see free5gc is alive. Then, use ifconfig to see if the tunnel uesimtun0 has been created (by nr-ue).

• Ping google.com via the tunnel uesimtun0 to test the connection to the internet via 5G core network.

     ping -I uesimtun0 google.com
  

  If ping gets replies, then free5GC is running properly. Congratulations!