comnetsemu_open5gs

Deploy open5gs and ueransim in comnetsemu to perform cp state access measurements.

Setup

1. Get comnetsemu source from here.

2. Clone this repository into the comnetsemu folder (to sync with the host).

3. Patch the Vagrantfile in comnetsemu with git apply comnetsemu_open5gs/vagrantfile.patch.

4. Install comnetsemu using Option 1.

5. Enter comnetsemu VM vagrant ssh comentsemu and navigate to cd /comnetsemu/comnetsemu_open5gs/open5gs

6. Clone the open5gs source from here and then switch to the dev branch (modified source from fixed version)

7. Build UERANSIM and open5gs container with the respective build_image.sh script in ueransim and open5gs.

Experiments

Run the emulation

$ sudo python3 topo.py -i

The -i argument automatically spawns the XTerm displays for the docker hosts. In the xterms run following commands to start the 5G core network, the gNB and the UE

5gc: $ ./install/etc/open5gs/start_open5gs.sh       # Wait until the core is booted, approx. 10s
gnb: $ ./nr-gnb -c /mnt/ueransim/open5gs-gnb.yaml
ue:  $ ./nr-ue -c /mnt/ueransim/open5gs-ue.yaml

After the first boot of the 5GC, the UE must be registered in the database through WebUI (see below). To check whether everything was setup successfully, in a new window enter the UE container with docker exec -it ue /bin/bash and start a ping with ping -I uesimtun0 -c 3 www.google.com.

To end the emulation terminate core, gnb and ue with ctrl + c, run quit in the mininet cli and eventually clean up with sudo mn -c.

UE registration

UEs can be configured using the WebUI of open5gs. In your browser open localhost:3000 (username: admin, password: 1423). The configuration is then as follows:

• IMSI: 901700000000001
• Key: 465B5CE8B199B49FAA5F0A2EE238A6BC (remove spaces from the default)
• OPc: E8ED289DEBA952E4283B54E88E6183CA (remove spaces from the default)
• Slice config: leave as is