120 lines
2.0 KiB
ReStructuredText
120 lines
2.0 KiB
ReStructuredText
..
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This work is licensed under a Creative Commons Attribution 3.0 Unported
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License.
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http://creativecommons.org/licenses/by/3.0/legalcode
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===========================================
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ofagent: port monitoring w/o ovsdb accesses
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===========================================
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https://blueprints.launchpad.net/neutron/+spec/ofagent-port-monitor
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Problem description
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===================
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ofagent currently scans ovsdb (via ovs-vsctl command) to get a list of ports.
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ovsdb is not likely available for other openflow switch implementations.
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Proposed change
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===============
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* implement the functionality using OFPMP_PORT_DESC instead of ovsdb.
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* (optional) use OFPT_PORT_STATUS asynchronous messages to
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avoid periodic polling.
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* as there is no pure openflow equivalent for port external-ids,
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we plan to use port name to identify devices. (as linuxbridge does)
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Alternatives
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------------
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* implement switch-specific methods for every switch implementations
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* use of-config
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at a glance of the spec, it doesn't seem usable at this point, though.
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Data model impact
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-----------------
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none
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REST API impact
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---------------
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none
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Security impact
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---------------
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none
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Notifications impact
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--------------------
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none
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Other end user impact
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---------------------
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none
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Performance Impact
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------------------
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in case asyncronous messages are used, performance might be improved.
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Other deployer impact
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---------------------
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none
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Developer impact
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----------------
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none
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Implementation
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==============
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Assignee(s)
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-----------
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Primary assignee:
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yamamoto
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Other contributors:
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kakuma
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Work Items
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----------
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see "Proposed change" section.
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Dependencies
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============
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none
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but some of bug fixes need to be merged to make this useful.
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for example, https://review.openstack.org/#/c/88224/
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Testing
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=======
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ryu/ofagent third party testing would find regressions.
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Documentation Impact
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====================
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none
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References
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==========
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* https://www.opennetworking.org/sdn-resources/onf-specifications/openflow
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* OpenFlow 1.3.3 7.3.5.7 Port Description
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* OpenFlow 1.3.3 7.4.3 Port Status Message
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