Microsoft load-balancing node's static ARP entries with unicast MAC addresses

You can configure a Microsoft loadbalancing node's static Address Resolution Protocol (ARP) entries for unicast MAC addresses on integrated routing and bridging (IRB) interfaces. On your provider edge (PE) device, you can create a static ARP entry for the Microsoft load-balancing node's virtual IP address and its unicast virtual MAC address. This static ARP configuration enables your PE devices to flood traffic for the Microsoft load-balancing node's virtual IP address to the virtual MAC address in an EVPN Layer 2 domain or any other Layer 2 domain. To enable unicast MAC addresses on IRB interfaces, enable the flood-as-unknown-unicas option in the [edit interfaces irb unit family inet address / arp mac ] hierarchy. The flood-as-unknown-unicast option enables flooding of virtual IP addresses and virtual MAC traffic flows from a Microsoft load-balancing cluster.