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 L3 agent

You can run an L3 agent that enables layer 3 forwarding and floating IP support.

The node that runs the L3 agent should run:

neutron-l3-agent --config-file NEUTRON_CONFIG_FILE --config-file L3_CONFIG_FILE

You must configure a driver that matches the plug-in that runs on the service. This driver creates the routing interface.

Table 7.3. Settings
Option Value
Open vSwitch
interface_driver ($NEUTRON_CONF_DIR/l3_agent.ini) neutron.agent.linux.interface.OVSInterfaceDriver
external_network_bridge ($NEUTRON_CONF_DIR/l3_agent.ini) br-ex
Linux Bridge
interface_driver ($NEUTRON_CONF_DIR/l3_agent.ini) neutron.agent.linux.interface.BridgeInterfaceDriver
external_network_bridge ($NEUTRON_CONF_DIR/l3_agent.ini) This field must be empty (or the bridge name for the external network).

The L3 agent communicates with the OpenStack Networking server through the OpenStack Networking API, so the following configuration is required:

  1. OpenStack Identity authentication:


    For example:
  2. Administrative user details:

    admin_tenant_name $SERVICE_TENANT_NAME
    admin_user $Q_ADMIN_USERNAME
    admin_password $SERVICE_PASSWORD
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