Chapter 49. Using nmstate-autoconf to automatically configure the network state using LLDP

Procedure

1. Enable LLDP on the Ethernet interfaces:

   1. Create a YAML file, for example ~/enable-lldp.yml, with the following content:

      interfaces:
        - name: enp1s0
          type: ethernet
          lldp:
            enabled: true
        - name: enp2s0
          type: ethernet
          lldp:
            enabled: true
        - name: enp3s0
          type: ethernet
          lldp:
            enabled: true

   2. Apply the settings to the system:

      # nmstatectl apply ~/enable-lldp.yml

2. Configure the network interfaces using LLDP:

   1. Optional, start a dry-run to display and verify the YAML configuration that nmstate-autoconf generates:

      # nmstate-autoconf -d enp1s0,enp2s0,enp3s0
      ---
      interfaces:
      - name: prod-net
        type: vlan
        state: up
        vlan:
          base-iface: bond100
          id: 100
      - name: mgmt-net
        type: vlan
        state: up
        vlan:
          base-iface: enp3s0
          id: 200
      - name: bond100
        type: bond
        state: up
        link-aggregation:
          mode: balance-rr
          port:
          - enp1s0
          - enp2s0

   2. Use nmstate-autoconf to generate the configuration based on information received from LLDP, and apply the settings to the system:

      # nmstate-autoconf enp1s0,enp2s0,enp3s0

Verification

1. Display the settings of the individual interfaces:

   # nmstatectl show <interface_name>