A company has implemented 802.1X authentication on AOS-CX access switches, where two ClearPass servers are used to implement AAA. Each switch has the two servers defined. A network engineer notices the following command configured on the AOS-CX switches:

radius-server tracking user-name monitor password plaintext aruba123

What is the purpose of this configuration?

A. Implement replay protection for AAA messages

B. Define the account to implement downloadable user roles

C. Speed up the AAA authentication process

D. Define the account to implement change of authorization

Reference:
https://techhub.hpe.com/eginfolib/networking/docs/switches/K-KA-KB/16-01/5200-0122_access_security_guide/content/ch09s02.html