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.
|Note:||The ExtraHop system does not perform DNS lookups for device names. The ExtraHop system derives the DNS name for a device by observing DNS traffic over wire data. For more information, see Device discovery.|
- Log into the Web UI on the Discover or Command appliance.
- Click Metrics and select Device in the left pane.
Find a device and
then click the device name.
A protocol page appears, which displays traffic and protocol activity for the selected device.
Select Overview in the left pane below the device
In the Manage Device section in the upper right corner of the page, click
- Click Display custom name.
- Type a custom name in the field.
- Click Save.