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+..
+ This work is licensed under a Creative Commons Attribution 3.0 Unported
+ License.
+
+ http://creativecommons.org/licenses/by/3.0/legalcode
+
+====================================================================
+Adding agent-less driver support for neutron-dynamic-routing project
+====================================================================
+
+[RFE] neutron_dynamic_routing project is bound to rpc driver closely
+  https://bugs.launchpad.net/neutron/+bug/1611632
+
+Problem Description
+===================
+
+The current module `BgpPlugin.py <https://github.com/openstack/neutron-dynamic-routing/blob/master/neutron_dynamic_routing/services/bgp/bgp_plugin.py#L41>`_ is bound to RPC driver so closely, so it is not
+working well with the agent-less driver. Another problem is the neutron-dynamic-routing
+project does not follow the service provider registration mechanism. Currently, for all
+advanced service features, all projects are using service provider to load the driver,
+so from this view, the `neutron-dynamic-routing <https://github.com/openstack/neutron-dynamic-routing/blob/master/neutron_dynamic_routing>`_ project needs to be refactored.
+
+
+Proposed Change
+===============
+
+Refactor the current neutron-dynamic-routing code to make sure all agent/agent-less
+drivers work well.
+
+    1. Make BgpPlugin.py as an overall interface to load different BGP drivers. The
+    service name will be DYNAMIC_ROUTING.
+
+    2. Add a new configuration file neutron_dynamic_routing.conf to specify the
+    service_providers, currently, the default service provider is RPC agent driver.
+
+    3. The existing bgp_dragent.ini will be used by the RPC driver such as RYU driver and
+    quagga driver.
+
+    4. Create a new directory to locate the BgpRpcPluginDriver. The BgpRpcPluginDriver will
+    do what the current BgpPlugin did, for example, setup rpc and register callback.
+
+
+Configuration file impact
+--------------------------
+
+Add a new neutron_dynamic_routing.conf to specify the service_providers.
+
+    service_provider = DYNAMIC_ROUTING:PRCDriver:neutron_dynamic_routing.services.bgp.service_drivers.rpc_bgp.BgpRpcPluginDriver:default
+
+Behaviour Changes
+-----------------
+
+Currently, for devstack, the dynamic routing agent (DR agent) is started by default. After the code refactor, the DR agent is
+only started when the RPC service provider is enabled. But there will not be any behavioural changes because the
+RPC back-end which is the current behaviour will remain as it is.
+
+References
+==========
+
+https://github.com/openstack/neutron-lbaas/blobl/master/neutron_lbaas/services/loadbalancer/plugin.py