HP ProCurve Switch 6120G/XG Manual page 212

Figure 5-13. Example of Optional Accounting Update Period and Accounting Suppression on Unknown User
To continue the example in figure 5-12, suppose that you wanted the switch to:
Send updates every 10 minutes on in-progress accounting sessions.
■
■ Block accounting for unknown users (no username).
RADIUS Authentication, Authorization, and Accounting
Configuring RADIUS Accounting
Update Period
Suppress Unknown User
5-45