Why does VM migration take 10 minutes

During VM migration, a VM migrates from one server to another server. When the two servers connect to different switch ports, the VM does not send free ARPs but sends RARPs. Therefore, the switch refreshes MAC addresses to the new port and the packets refresh ARPs to the new port properly. Services are interrupted for some time.

The 10 minutes duration is the ARP aging time of the original port.

To avoid service interruption, you need to enable the MAC-ARP association function. In V100R006 and later versions, run the mac-address update arp command in system mode to enable this function. For details, see MAC Address-Triggered ARP Entry Update.

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