On 20 Mar 2023, at 15:21, 675063826 wrote:

> Hi Eelco,
>
> Thanks a lot for your reply. Maybe I can describe more details about my 
> question. My aim is to create a tcp connection between ovs and 
> controller(maybe using tcp port 6666.). First , I tried ONOS. I found that 
> ONOS pushed flow table entries so that the tcp connection can work well. And 
> then I tried OpenvirteX(a network slice controller), I found that OVX didn't 
> dispatch any flow table entries.   So I have to add some flows manually.😫 I 
> Think it is the problem of OVX itself. Thanks a lot for your reply.

I would suggest checking if the TCP connection between OVS and the controller 
is up, and if so see if you see any controller traffic.

I think you could try setting the debug level of vconn “ovs-appctl vlog/set 
vconn:dbg”, and then check the ovs-vswitchd.log. This is from the top of my 
head, so not 100% sure this is working (you could try this first with the 
working controller).

//Eelco


>
> ---- Replied Message ----
>
> FromEelco Chaudron<echau...@redhat.com>
>
> Date03/20/2023 17:31
>
> To675063826<675063...@qq.com>
>
> ccovs-disc...@openvswitch.org<ovs-discuss@openvswitch.org>
>
> SubjectRe: [ovs-discuss] add pernament flow entry
>
>
> On 17 Mar 2023, at 17:14, 675063826 via discuss wrote:
>
>> Hello,
>> I want to keep a tcp connection between ovs and controller. But I found that 
>> the flow entries were deleted when the controller was down. Are there 
>> methods to add flows permanent?I mean when I start ovs, my flow entry exist.
>
> Hi Yani,
>
> OpenFlow rules can not be saved, they will always start with a NORMAL rule. 
> You can tune this a little bit with the “Controller Failure Settings”, see 
> http://www.openvswitch.org/support/dist-docs/ovs-vsctl.8.txt.
>
> You can always use a script to add the flows manually using “ovs-ofctl 
> add-flows” during startup.
>
> Hope this helps.
>
> Eelco
>
>> Best wishes,
>>
>> Yani._______________________________________________
>> discuss mailing list
>> disc...@openvswitch.org
>> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss

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