The command show radius statistics (or more specifically, show radius-server statistics in ArubaOS-CX) is used to display counters and statistical information for RADIUS servers. This output includes the number of authentication requests sent, as well as the number of Access-Accept, Access-Reject, and Access-Challenge responses received. While this is not a detailed, event-by-event log, it provides a summary of authentication outcomes, which is crucial for monitoring and troubleshooting RADIUS authentication activity. Among the given choices, it is the most appropriate command for viewing information derived from authentication events.

B. show authentication radius: This is not a valid command in the ArubaOS-CX command-line interface. The show authentication command has other sub-options, but not radius directly.

C. display radius logs: The command verb display is not standard for showing information in ArubaOS-CX; the correct verb is show. This makes the command syntactically incorrect.

D. show aaa radius: This is not a valid command structure in ArubaOS-CX. While show aaa is a valid command root, it does not have a direct radius sub-option.

1. ArubaOS-CX 10.12 Security Guide

Page 101

"Show commands" section.

The guide lists the command show radius-server statistics [name | all-vrfs | vrf ]. The description states it "Displays statistics for RADIUS servers." The example output clearly shows counters for "Authentication Requests

" "Access-Accepts

" and "Access-Rejects

" which represent a summary of authentication log events.

2. ArubaOS-CX 10.12 Command-Line Interface Guide

Pages 2688-2689.

This guide details the show radius-server statistics command

confirming its function and syntax. A review of the guide's command index confirms that show authentication radius

display radius logs

and show aaa radius are not valid commands

validating their exclusion.