BGP dynamic routing advertises prefixes for self-service networks and host routes for floating IP addresses. The following conditions must be met to advertise a self-service network:

• The external and self-service network must reside in the same address scope.
• The Neutron router must contain an interface on the self-service subnet and a gateway on the external provider network.
• The BGP speaker must peer with a device connected to the same external provider network as the Neutron router.
• The BGP speaker has the advertise_tenant_networks attribute set to True.

Advertisement of a floating IP address requires satisfying the following conditions:

• The BGP speaker must peer with a device connected to the same external provider network as the Neutron router hosting the floating IP.
• The BGP speaker has the advertise_floating_ip_host_routes attribute set to True.