[ovirt-users] Random reboots

Hi community, We're dealing with an issue as we occasionally have random reboots on any of our hosts. We're using ovirt 4.4.3 in production with about 60 VM distributed over 5 hosts. We've a virtualized engine and a DRBD storage mounted by NFS. The infrastructure is interconnected by a Cisco 9000 switch. The last random reboot was yesterday February 14th at 03:03 PM (in the log it appears as: 15:03 due to our time configuration) of the host: 'nodo1'. At the moment of the reboot we detected in the log of the switch a link-down in the port where the host is connected. I attach log of the engine and host 'nodo1' in case you can help us to find the cause of these random reboots. Thanks in advance. Pablo.