Enabling DAI on a VLAN

Dynamic ARP inspection validates ARP packets from the untrusted ports of a VLAN.
Note: DAI is disabled by default.
  1. Enter global configuration mode. 
    device# configure terminal
  2. Enable DAI on an existing VLAN. 
    device(config)# ip arp inspection vlan 2

The following example enables DAI on an already configured VLAN 2. 

device# configure terminal
device(config)# ip arp inspection vlan 2
Parent topic: Configuring Dynamic ARP Inspection