2.0 KiB
2.0 KiB
ofagent: port monitoring w/o ovsdb accesses
https://blueprints.launchpad.net/neutron/+spec/ofagent-port-monitor
Problem description
ofagent currently scans ovsdb (via ovs-vsctl command) to get a list of ports. ovsdb is not likely available for other openflow switch implementations.
Proposed change
- implement the functionality using OFPMP_PORT_DESC instead of ovsdb.
- (optional) use OFPT_PORT_STATUS asynchronous messages to avoid periodic polling.
- as there is no pure openflow equivalent for port external-ids, we plan to use port name to identify devices. (as linuxbridge does)
Alternatives
- implement switch-specific methods for every switch implementations
- use of-config at a glance of the spec, it doesn't seem usable at this point, though.
Data model impact
none
REST API impact
none
Security impact
none
Notifications impact
none
Other end user impact
none
Performance Impact
in case asyncronous messages are used, performance might be improved.
Other deployer impact
none
Developer impact
none
Implementation
Assignee(s)
- Primary assignee:
-
yamamoto
- Other contributors:
-
kakuma
Work Items
see "Proposed change" section.
Dependencies
none
but some of bug fixes need to be merged to make this useful. for example, https://review.openstack.org/#/c/88224/
Testing
ryu/ofagent third party testing would find regressions.
Documentation Impact
none
References
- https://www.opennetworking.org/sdn-resources/onf-specifications/openflow
- OpenFlow 1.3.3 7.3.5.7 Port Description
- OpenFlow 1.3.3 7.4.3 Port Status Message