Step 9 — Stop and clean up

Stop the simulator: back on the Simulator page, click Stop. The 10 simulated CPEs release their leases (real DHCP RELEASE frames), the BNG tears down sessions, and everything returns to zero.

Uninstall CPESIM (optional): About → Toybox → CPE Simulator → Remove. This unregisters the systemd unit, removes /opt/bng-demo/, and drops the Simulator entry from the left nav.

Shut down the appliance: either Machine → Close → Send the shutdown signal in the VirtualBox window (graceful; ~30 sec), or from your host terminal:

ssh -p 2222 vagrant@localhost 'sudo poweroff'

Delete the appliance (if you're done evaluating): with the VM powered off, right-click it in VirtualBox → Remove → Delete all files. This deletes the imported VM plus its virtual disk (about 6 GB back to your host).