A RADIUS server is located at IP address 192.168.102.101. Which command configures a Cisco router to find the server?
- radius server 192.168.102.101
- aaa radius 192.168.102.101
- authentication radius 192.168.102.101
- address ipv4 192.168.102.101
Explanation: Configuring a RADIUS server on a Cisco router involves a two-step process using a named server object:
- First, you enter global configuration mode and create a named configuration for the server using the command radius server [configuration-name].
- Once inside the radius server configuration mode, you use the address ipv4 [hostname or IP] command to tell the router the actual location (IP address) of the server.
This specific command also allows for the optional configuration of the authentication port (default 1812) and accounting port (default 1813) on the same line. While the radius server command initiates the configuration object, the address ipv4 command is what explicitly tells the router where to "find" the server on the network.
Related exam: Modules 14 – 16: Checkpoint Exam: Network Security Answers (CCNP ENCOR v9)
