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Hierarchy Level


Enable assisted replication (AR) in an EVPN network.

AR helps to optimize broadcast, unknown unicast, and multicast (BUM) traffic in EVPN networks. To enable AR, you configure devices in the EVPN network to operate as AR replicator and AR leaf devices. Use the statements in this hierarchy to define and set up AR replicators and AR leaf devices.

AR replicator devices help perform BUM traffic replication and forwarding tasks for AR leaf devices. When an AR leaf device receives BUM traffic, instead of always using ingress replication to the EVPN core, it forwards the traffic on an AR overlay tunnel to an AR replicator device that can better handle the replication load. The AR replicator device then replicates and forwards the traffic to other ingress replication overlay tunnels. You configure a loopback interface IP address on each AR replicator device for the AR overlay tunnel.

AR devices can interoperate with devices in the EVPN network that don’t support or are not configured into an AR device role.



Configure a device as an AR leaf device.


Configure a device as an AR replicator device.

These statements and their options are explained in more detail separately.

Required Privilege Level


Release Information

Statement introduced in Junos OS Release 18.4R2 and 19.4R1.