EVPN host mobility is supported in SR OS as in Section 4 of draft-ietf-bess-evpn-inter-subnet-forwarding. When a host moves from a source PE to a target PE, it can behave in one of the following ways:
The host initiates an ARP request or GARP upon moving to the target PE.
The host sends a data packet without first initiating an ARP request of GARP.
The host is silent.
The SR OS supports the above scenarios as follows.