Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide, Cisco IOS XE 26.1.x

PDF

Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide, Cisco IOS XE 26.1.x

Interim Accounting

Interim Accounting documents the RADIUS interim accounting feature that sends updates from a NAS between start/stop messages to report session changes (e.g., DHCP, HTTP, IP, roaming). It explains that interim updates may be event‑driven or periodic, lists downsides (increased congestion, higher error rates, distorted metrics), notes the feature is enabled by default, and shows CLI steps to disable and verify the setting introduced in Cisco IOS XE Cupertino 17.9.1.