Overview of Monitoring Static IP Devices
Only IP addresses assigned by the DHCP server are visible in RADIUS accounting on an ArubaOS-Switch. Visibility of statically assigned IP addresses in RADIUS accounting is available with a command that enables and disables static IP visibility for an authenticated client.
From 16.06 release,
ip client-tracker probe-delay
command is available to enable and disable the delay in the client tracking for static IP visibility.