A campus switch functioning as an AAA server is called a local AAA server, and...

In network security, AAA (Authentication, Authorization, and Accounting) is a framework for controlling access to network resources. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation explains that a campus switch can function as a local AAA server when it is configured to handle AAA processes internally, without relying on an external server like RADIUS or TACACS+.

When acting as a local AAA server, the switch maintains a local user database and performs authentication (verifying user identity), authorization (determining user privileges), and accounting (tracking user activity). This is particularly useful in small networks or scenarios where connectivity to an external AAA server is unavailable.