When looking under Monitoring > Event Viewer in ClearPass Policy Manager, a typical system log entry appears as:

Timestamp: 2026-08-12 17:10:25,482
Log Level: WARN
Category: Server
Source: RADIUS-Proxy
Event ID: 3002
Description: External RADIUS server did not respond to 5 consecutive requests. Server marked as down. Further requests will be dropped/proxied elsewhere for 300 seconds.

In the Access Tracker, individual client requests hitting a downed target will typically return:

Error Code: 208
Error Category: No response from home server / RADIUS-Proxy Timeout