Networking Option 2: Self-service networks¶

Configure the Linux bridge agent¶

The Linux bridge agent builds layer-2 (bridging and switching) virtual networking infrastructure for instances including VXLAN tunnels for private networks and handles security groups.

• Edit the /etc/neutron/plugins/ml2/linuxbridge_agent.ini file and complete the following actions:

  • In the [linux_bridge] section, map the public virtual network to the public physical network interface:

    [linux_bridge]
    physical_interface_mappings = public:PUBLIC_INTERFACE_NAME
    

    Replace PUBLIC_INTERFACE_NAME with the name of the underlying physical public network interface.

  • In the [vxlan] section, enable VXLAN overlay networks, configure the IP address of the physical network interface that handles overlay networks, and enable layer-2 population:

    [vxlan]
    enable_vxlan = True
    local_ip = OVERLAY_INTERFACE_IP_ADDRESS
    l2_population = True
    

    Replace OVERLAY_INTERFACE_IP_ADDRESS with the IP address of the underlying physical network interface that handles overlay networks. The example architecture uses the management interface to tunnel traffic to the other nodes. Therefore, replace OVERLAY_INTERFACE_IP_ADDRESS with each node’s own management IP address.

  • In the [agent] section, enable ARP spoofing protection:

    [agent]
    ...
    prevent_arp_spoofing = True
    

  • In the [securitygroup] section, enable security groups and configure the Linux bridge iptables firewall driver:

    [securitygroup]
    ...
    enable_security_group = True
    firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
    

Return to Networking compute node configuration.