To add: Bundle based reconciliation is added via the below patch and this mechanism is NOT enabled by default. This is an alternate to FRM reconciliation, if you enable bundle based reconciliation, then instead of default reconciliation bundle based will be used. https://git.opendaylight.org/gerrit/#/c/60520/
Bundles are supported from OVS 2.6 and above. Bundles are added as an extension in OFPlugin, using bundles application can send flow/group via bundles extension. https://wiki.opendaylight.org/view/OpenDaylight_OpenFlow_Plugin:Bundles_extension_support Usage: https://wiki.opendaylight.org/view/OpenDaylight_OpenFlow_Plugin:Bundles_usage There are no CSIT available as of now, but there is a plan to add it soon. Regards, Arun From: [email protected] [mailto:[email protected]] On Behalf Of Abhijit Kumbhare Sent: Friday, October 13, 2017 9:21 AM To: Anil Vishnoi <[email protected]> Cc: [email protected] Subject: Re: [openflowplugin-dev] hitless resync First of all - yes - CSIT needs to be added for the hitless resync. Secondly hitless resync is different from bundles. Hitless resync is a reconciliation mechanism which uses bundles in order to be - errr hitless. The basic idea is that the switch will continue using the original flow table/s, the controller replays the flows/groups from the config into a bundle, the switch receives the bundle in a copy of flow table/s - and once the bundle programming is done makes the copy active. Basically to avoid datapath disruption during reconciliation. The bundles feature as present is available from OVS 2.6 and above. Gobinath has added a reconciliation framework which would allow to plug in a different resync mechanism in the patches: https://git.opendaylight.org/gerrit/#/q/owner:gobinath%2540ericsson.com+status:merged+project:openflowplugin I don't believe he has actually added the hitless resync (looking at the patches) - I will ask him to shed more light. About: - How do we verify this feature? is there a way to check bundle programming has really happened? We would need to have tests verifying reconciliation with zero datapath disruption - so we will need to think about it a bit. On Thu, Oct 12, 2017 at 1:15 PM, Anil Vishnoi <[email protected]<mailto:[email protected]>> wrote: On Thu, Oct 12, 2017 at 10:53 AM, Luis Gomez <[email protected]<mailto:[email protected]>> wrote: I have few questions on this feature: - Is this feature enabled by default? Yes, its a feature, but as of now no application is basically using it. We do have a sample application that shows how user can use this feature. https://github.com/opendaylight/openflowplugin/tree/master/samples/sample-bundles - Which OVS version supports bundles? I believe we currently use 2.5.2 in latest tools VM I believe 2.5.2 don't have support, but i am not sure. - How do we activate bundle programming? is it enough to push a bunch of flows/group to FRM using REST? I will get back to you on that. - How do we verify this feature? is there a way to check bundle programming has really happened? Bundle failure generates the error, but i think the easiest way probably is to program different set of flows with bundle and verify that all the flows are present in the switch. BR/Luis On Oct 12, 2017, at 10:26 AM, Anil Vishnoi <[email protected]<mailto:[email protected]>> wrote: No, there is no CSIT test for bundles. On Thu, Oct 12, 2017 at 10:15 AM, Jamo Luhrsen <[email protected]<mailto:[email protected]>> wrote: it's the thing that uses openflow bundles. I didn't follow the dev cycle with it, but I get the sense that it works now. https://wiki.opendaylight.org/view/OpenDaylight_OpenFlow_Plugin:Hitless_resync JamO On 10/12/2017 10:04 AM, Luis Gomez wrote: > What is hitless resync in the OF plugin context? > >> On Oct 12, 2017, at 8:22 AM, Jamo Luhrsen >> <[email protected]<mailto:[email protected]>> wrote: >> >> Hi OFP, >> >> We talked a little about this hitless resync feature from openflowplugin. >> It's of >> interest to netvirt. I'm wondering if there are any CSIT jobs that validate >> it in >> the openflowplugin CSIT jobs? >> >> We'll be adding some netvirt test cases that will also test it, but just >> from a >> higher level than maybe it would be tested at your level. >> >> Thanks, >> JamO > _______________________________________________ openflowplugin-dev mailing list [email protected]<mailto:[email protected]> https://lists.opendaylight.org/mailman/listinfo/openflowplugin-dev -- Thanks Anil -- Thanks Anil _______________________________________________ openflowplugin-dev mailing list [email protected]<mailto:[email protected]> https://lists.opendaylight.org/mailman/listinfo/openflowplugin-dev
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