Agent¶
Neutron-dynamic-routing implements a new agent named “DRAgent”. The agent talks to the neutron-dynamic-routing plugin which resides in the neutron server to get routing entity configuration. DRAgent interacts with the back-end driver to realize the required dynamic routing protocol functionality. For details, please refer to the system design document System Design
Note
One DRAgent can support multiple drivers but currently ONLY Ryu is integrated successfully.
Scheduler¶
Neutron-dynamic-routing scheduler, schedules a routing entity to a proper DRAgent.
BGP Scheduler¶
BGP Speaker and DRAgent has 1:N association which means one BGP speaker can be scheduled on multiple DRAgents.
Here is an example to associate/disassociate a BGP Speaker to/from a DRAgent.
(neutron) bgp-speaker-list
+--------------------------------------+------+----------+------------+
| id | name | local_as | ip_version |
+--------------------------------------+------+----------+------------+
| 0967eb04-59e5-4ca6-a0b0-d584d8d4a132 | bgp2 | 200 | 4 |
| a73432c3-a3fc-4b1e-9be2-6c32a61df579 | bgp1 | 100 | 4 |
+--------------------------------------+------+----------+------------+
(neutron) agent-list
+--------------------------------------+---------------------------+---------------------+-------------------+-------+----------------+---------------------------+
| id | agent_type | host | availability_zone | alive | admin_state_up | binary |
+--------------------------------------+---------------------------+---------------------+-------------------+-------+----------------+---------------------------+
| 0c21a829-4fd6-4375-8e65-36db4dc434ac | DHCP agent | steve-devstack-test | nova | :-) | True | neutron-dhcp-agent |
| 0f9d6886-910d-4af4-b248-673b22eb9e78 | Metadata agent | steve-devstack-test | | :-) | True | neutron-metadata-agent |
| 5908a304-b9d9-4e8c-a0af-96a066a7c87e | Open vSwitch agent | steve-devstack-test | | :-) | True | neutron-openvswitch-agent |
| ae74e375-6a75-4ebe-b85c-6628d2baf02f | L3 agent | steve-devstack-test | nova | :-) | True | neutron-l3-agent |
| dbd9900e-9d16-444d-afc4-8d0035df5ed5 | BGP dynamic routing agent | steve-devstack-test | | :-) | True | neutron-bgp-dragent |
+--------------------------------------+---------------------------+---------------------+-------------------+-------+----------------+---------------------------+
(neutron) bgp-dragent-speaker-add dbd9900e-9d16-444d-afc4-8d0035df5ed5 bgp1
Associated BGP speaker bgp1 to the Dynamic Routing agent.
(neutron) bgp-speaker-list-on-dragent dbd9900e-9d16-444d-afc4-8d0035df5ed5
+--------------------------------------+------+----------+------------+
| id | name | local_as | ip_version |
+--------------------------------------+------+----------+------------+
| a73432c3-a3fc-4b1e-9be2-6c32a61df579 | bgp1 | 100 | 4 |
+--------------------------------------+------+----------+------------+
(neutron) bgp-dragent-speaker-remove dbd9900e-9d16-444d-afc4-8d0035df5ed5 bgp1
Disassociated BGP speaker bgp1 from the Dynamic Routing agent.
(neutron) bgp-speaker-list-on-dragent dbd9900e-9d16-444d-afc4-8d0035df5ed5
(neutron)
Note
Currently, auto-scheduling is not supported.
ReST API’s for neutron-dynamic-routing scheduler is defined in the API document API
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