Edit the BGP agent configuration file and add the following configuration, substituting the bgp_router_id value with the IP address of the respective controller node, if necessary:
[bgp]
...
bgp_speaker_driver =
neutron_dynamic_routing.services.bgp.agent.driver.ryu.driver.RyuBgpDriver
bgp_router_id = 10.10.0.100
In this example, the management IP address of the host is used. Using an IP address and interface dedicated to router advertisements is possible but outside the scope of this book.