Hi Bertrand,

Thanks for the info - we will give it a try & update on results.

Thanks!
Koby

________________________________
From: Bertrand Low <[email protected]>
Sent: Mar 1, 2017 8:45 PM
To: Aizer, Koby; Luis Gomez; Sokolover, Dotan
Cc: openflowplugin-dev
Subject: RE: [openflowplugin-dev] OVS connection fails to restore after ODL 
restart

Hi Koby and Dotan,

The issue you are facing looks similar to 
https://bugs.opendaylight.org/show_bug.cgi?id=7462

I’ve been looking into that bug and it looks like Anil’s recent fix for Bug 
7736 resolves the OVS restart issue. This has been merged in the master branch 
and for Boron SR3.

>From the logs it looks like you are using Boron SR2, so perhaps give the 
>most-recent 0.5.3 SNAPSHOT a look.

Thanks,
Bertrand

From: [email protected] 
[mailto:[email protected]] On Behalf Of Aizer, 
Koby
Sent: March 1, 2017 8:41 AM
To: Luis Gomez <[email protected]>; Sokolover, Dotan <[email protected]>
Cc: openflowplugin-dev <[email protected]>
Subject: Re: [openflowplugin-dev] OVS connection fails to restore after ODL 
restart

+ Dotan (who wasn’t registered to the mailing list)

Hi Luis,

Dotan was able to reproduce this issue quite easily by doing OVS restarts (took 
only a few attempts).
He did so while capturing the openflow port, and also openflowplugin in TRACE.
Both the log & the wireshark trace are attached to the ticket.

Thanks,
Koby

From: Luis Gomez [mailto:[email protected]]
Sent: Friday, February 24, 2017 1:35 AM
To: Aizer, Koby <[email protected]<mailto:[email protected]>>
Cc: openflowplugin-dev 
<[email protected]<mailto:[email protected]>>
Subject: Re: [openflowplugin-dev] OVS connection fails to restore after ODL 
restart

Well, I am not sure others but I do not have an openstack available to recreate 
this, thats why I think wireshark trace is very helpful here. Anyway maybe some 
dev can figure out something but just looking at the karaf log you posted.

BR/Luis

On Feb 23, 2017, at 1:06 PM, Aizer, Koby 
<[email protected]<mailto:[email protected]>> wrote:

Hi Luis,

I’ve added the karaf.log to [1]. Unfortunately I’ve restarted the environment 
already, so I can’t get a wireshark capture (I believe it shouldn’t be too hard 
to reproduce if it’s really needed)

Thanks
Koby

From: Luis Gomez [mailto:[email protected]]
Sent: Thursday, February 23, 2017 8:14 PM
To: Aizer, Koby <[email protected]<mailto:[email protected]>>
Cc: openflowplugin-dev 
<[email protected]<mailto:[email protected]>>
Subject: Re: [openflowplugin-dev] OVS connection fails to restore after ODL 
restart

Hi Koby,

I think this is not enough information to understand your issue, can you please 
open a bug and attach a karaf log and a wireshark trace of the controller 
restart + switch fail to connect?

On Feb 23, 2017, at 9:01 AM, Aizer, Koby 
<[email protected]<mailto:[email protected]>> wrote:

Hi all,

I’ve just hit an issue where after an ODL restart, an OVS that was once 
connected to that ODL failed reconnecting to it.
I searched openflowplugin’s Bugzilla, and I saw there is already a similar bug 
on this issue [1]– though the described scenario is a bit different (OVS 
restart instead of ODL restart).

I couldn’t find a way to recover from this situation (I tried restarting OVS 
several times and I even tried an ODL restart) – it seems that ODL got to a 
state where it can’t reconnect to that switch.

Is there some known workaround for this? Any plans to fix this issue?

Thanks,
Koby

[1] https://bugs.opendaylight.org/show_bug.cgi?id=7223



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