Configuring ARP Suppression for BGP EVPN

You can enable ARP suppression for an EVPN instance. For BGP EVPN, when a VLAN is mapped to a VXLAN VNI, ARP suppression extends to corresponding EVPNs, VNIs, and EVIs. When ARP suppression is enabled, snooping MAC-IP bindings of any local endpoints for that VLAN is enabled. The information is maintained in a per-VLAN MAC-IP table. In addition to MAC-IP bindings learned through ARP snooping, any MAC-IP bindings learned via the BGP EVPN control plane are also stored in the same MAC-IP table.

The following task enables ARP suppression for a a Layer 2 EVPN.

Enter global configuration mode.
```
device# configure terminal
```

Enter EVPN configuration mode.
```
device(config)# l2vpn evpn
```

Create an EVPN instance.
```
device(config-evpn)# evpn-instance 1 vlan-based
device(config-evpn-evi)#
```
An EVPN instance with ID 1 is created and a VXLAN VLAN-based service model is configured.

Enable ARP suppression for the EVPN instance.
```
device(config-evpn-evi)# arp-suppression
```

The following example enables ARP suppression for an EVPN instance.

device# configure terminal
device(config)# l2vpn evpn
device(config-evpn)# evpn-instance 1 vlan-based
device(config-evpn-evi)# arp-suppression