Integration with lab.yml

LIG Node Configuration

The LIG node at lab.yml is configured to:

1. Run in a network-multitool container
2. Mount LIG files as read-only volumes
3. Configure IP interfaces towards both BNGs (VPRN 9999)
4. Enable IP forwarding and disable rp_filter
5. Configure NAT masquerade for outgoing traffic
6. Launch Python script in background

lig:
  kind: linux
  mgmt-ipv4: 10.99.1.12
  image: ghcr.io/srl-labs/network-multitool
  ports:
    - 56619:22
    - 8092:8080          # Dashboard web
  binds:
    - configs/lig/lig.py:/config/lig.py:ro
    - configs/lig/index.html:/config/index.html:ro
  exec:
    # Configure IP toward BNG MASTER (VPRN 9999)
    - bash -c "ip addr add 172.19.1.1/30 dev eth1"
    - bash -c "ip -6 addr add 2001:db8:ffff::1/126 dev eth1"
    # Configure IP toward BNG SLAVE (VPRN 9999)
    - bash -c "ip addr add 172.20.1.1/30 dev eth2"
    # Launch LIG
    - bash -c "mkdir -p /app && cp /config/lig.py /app/ && cp /config/index.html /app/"
    - bash -c "nohup python3 /app/lig.py > /var/log/lig.log 2>&1 &"

Mapped Port

Internal Port	External Port	Service
8080	8092	Web Dashboard + REST API
22	56619	SSH

The UDP listener (port 11111) does not need external mapping since it only receives traffic from the BNGs within the laboratory network.