Hi
I'm running a few CRS504s in production to give 25Gb connections to 2 oVirt/RHV servers. For the VM to public interfaces, one server is on a bond on a single switch, and the other is on a bond across two switches with MLAG, one of which is running 7.6, and the other running 7.7 (then 7..
The big problem is that when we migrate VMs from one host to the other, or even shut them down, if they were on the switches with the MLAG, most of the time the MAC address of the VM will never be removed from the Bridge Hosts table on the one switch running >= 7.7, and this causes ARP issues and broken communication to the VM. On the same MLAG pair, the other switch running 7.6 is fine, the MAC address goes away within the bridge aging time. The only way I can clear the MAC address is to down and up the bond interface.
Has anyone come across this on this switch or other modules with RoS >=7.7? As I understand the E flag on the MAC address means it's stored in the switch chip CAM. But I don't understand why it's not cleared when the host drops off the port.
I will do a downgrade later and see if makes a difference.
Any help much appreciated.