AAA RADIUS Server

Configure a Cisco Router to Access a AAA RADIUS Server:

Step 1. Create users on the RADIUS server

Step 2. Set a secret key on the RADIUS server

Step 3. Verify port 1812 for the RADIUS authentication port and 1813 for the RADIUS accounting port

Step 4. Set up SSH on the router for remote access 

Step 5. Set up a local user on the router in case of RADIUS server failure

Step 6. Enable AAA authentication on the router

Step 7. Set AAA authentication login method lists

Step 8. Enable the router to use the RADIUS server for authentication by configuring the following on the router: 

a. RADIUS server name

b. RADIUS server IP address, authentication port 1812, and accounting port 1813

c. shared secret key

Step 9. Configure the console line and specify the AAA login authentication method list to use

Step 10. Configure the VTY lines for SSH and specify the AAA login authentication method list to use

Step 11. Test and verify

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