Change a device name

The ExtraHop system automatically names devices by passively monitoring naming protocol traffic (DNS, DHCP, NETBIOS, CDP). If naming protocol traffic is not observed for a device, the device name displays the IP address for L3 devices or the MAC address for L2 devices. In either condition, you can change the automatic device name to a custom name. The custom name will appear throughout the ExtraHop system.

1. Log into the Web UI on the Discover or Command appliance.
2. Click Metrics and select Device in the left pane.
3. Find a device and then click the device name.
   A protocol page appears, which displays traffic and protocol activity for the selected device.
4. Select Overview in the left pane below the device name.
   
5. In the Manage Device section in the upper right corner of the page, click Properties.
   
6. Click Display custom name.
7. Type a custom name in the field.
8. Click Save.