UMGC-Fall 2021 CMIT-456 CCNP ENARSI v8 Packet Tracer Tutorial 22.2.1: Configure AAA Authentication on Cisco routers

In this video tutorial, prepared for my UMGC CMIT-456 (Cisco Networking Academy ENARSI v8 curriculum) course, we take our first look at configuring AAA authentication (not Authorization or Accounting) on Cisco routers. We compare and contrast the ‘old model’ of authentication (read: locally configured line passwords) with the AAA ‘new model’ of authentication, we configure local AAA, server-based AAA (with both TACACS+ and RADIUS), and go over the semantics of the ‘old-school’ tacacs-server and radius-server commands and their new syntax requirements. We even see the correct ‘ip domain-name’ setting (ccnp_v8.com) for the activity to ensure we max out our score at 100%. Enjoy!

***This video is an in-depth tutorial and is far more than simply an answer key to the aforementioned Packet Tracer activity. This tutorial is being made to assist my UMGC CMIT-456 learners in their journey through the ENARSI v8 material so, if you are just looking for a shortcut or easy answers for the activity, this is not the video you should watch. However, if you are looking to gain a deeper understanding of GRE tunnels/overlays, my hope is that this will increase your comprehension and help you to become a better and more effective network engineer. Enjoy!***

*This techtorial/Packet Tracer activity is all done running Cisco Modeling Labs (CML) v2.1.1-b19, some physical routers in my Evil Command Center Lab and/or Packet Tracer version 8.1.0.0722 (for the Mac) which was just recently released! The MINIMUM version you can use for any of the new CCNAv8 curriculum activities is Packet Tracer v7.3.0! Be sure to leave your feedback and questions below and I hope I have earned the privilege of your time!*