UMGC – Spring 2021 CMIT-455 CCNP ENCOR v8 Chapter #16 Supplement: GRE over IPsec w/OSPF

In this supplemental video tutorial for Chapter #16 of the ENCORv8 curriculum we continue our conversation around the use of IPsec to provide security to the sending and receiving of data across the Internet, but this time using Generic Routing Encapsulation (GRE) over IPsec and with the use of OSPFv2 as our routing protocol. We cover the use case for using IPsec/crypto maps by themselves, why we would use GRE over IPsec (remember, IPsec by itself only supports UNICAST IPv4), and the configure OSPF to support the advertisement of routing information. I also cover the IPsec/IKE/ISAKMP/AH/ESP topics again as we make our way through the tutorial. 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-455 learners in their journey through the ENCOR 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 on inter-VLAN routing configuration and designs, 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 7.3.1.0362 (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!

source
ipv4