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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">Fernando,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">It looks like you have another oVirt instance in the same network segment(s). Don’t you?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:Calibri;color:black">From: </span>
</b><span style="font-family:Calibri;color:black"><users-bounces@ovirt.org> on behalf of FERNANDO FREDIANI <fernando.frediani@upx.com><br>
<b>Date: </b>Wednesday, 12 July 2017 at 16:21<br>
<b>To: </b>"users@ovirt.org" <users@ovirt.org><br>
<b>Subject: </b>[ovirt-users] Bizzare oVirt network problem<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:Arial">Hello.<br>
<br>
I am facing a pretty bizzare problem in two of my Nodes running oVirt. A given VM running a few hundred Mbps of traffic simply stops passing traffic and only recovers after a reboot. Checking the bridge with 'brctl showmacs BRIDGE' I see the VM's MAC address
missing during this event.<br>
<br>
It seems the bridge simply unlearn the VM's mac address which only returns when the VM is rebooted.<br>
This problems happened in two different Nodes running in different hardware, in different datacenter, in different network architecture, different switch vendors and different bonding modes.<br>
<br>
The main differences these Nodes have compared to others I have and which don't show this problem are:<br>
- The CentOS 7 installed is a Minimal installation instead of oVirt-NG<br>
- The Kernel used is 4.12 (elrepo) instead of the default 3.10<br>
- The ovirtmgmt network is used also for the Virtual Machine showing this problem.<br>
<br>
Has anyone have any idea if it may have anything to do with oVirt (any filters) or any of the components different from a oVirt-NG installation ?<br>
<br>
Thanks<br>
Fernando<br>
<br>
</span><o:p></o:p></p>
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