The switch supports the Terminal Access Controller Access Control System plus (TACACS+) client. TACACS+ is a remote authentication protocol that provides centralized validation of users who attempt to gain access to a router or network access server (NAS). The TACACS+ feature is disabled by default.
The switch implementation of TACACS+ does not support:
Earlier versions of TACACS
Point-to-Point Protocol (PPP) authentication and accounting
IPv6 addresses
See the following sections to troubleshoot TACACS+.