Refer to the exhibit. The settings to connect to a RADIUS server were issued on router Rtr1. Which conclusion can be drawn if a problem occurs with AAA authentication between Rtr1 and Server1?

Question:

Refer to the exhibit. The settings to connect to a RADIUS server were issued on router Rtr1. Which conclusion can be drawn if a problem occurs with AAA authentication between Rtr1 and Server1?

• The RADIUS server configuration requires that port 1813 be used for authentication and port 1812 for authorization.
• The RADIUS server configuration requires that port 49 be used for authentication and authorization.
• The port numbers configured on the router are not identical to those configured on the RADIUS server.
• The configuration will not be active until it is saved and Rtr1 is rebooted.

Explanation: RADIUS uses ports 1812 or 1645 (Cisco default) for authentication and 1813 or 1646 (Cisco default) for accounting. Therefore, if the RADIUS server is using ports 1812 and 1813, these same port numbers have to be configured on the Cisco router.

Exam with this question: CCNP Enterprise: Advanced Routing (Version 8.0) – Infrastructure Security and Management Exam