In this video tutorial we take our first look at the Border Gateway Protocol (BGP) and more specifically, external BGP (eBGP). We go over Autonomous System (AS) Numbers (ASNs), how BGP (both iBGP/eBGP) use the Transmission Control Protocol (TCP) to establish neighborships, we look at the semantics of originating Network Layer Reachability Information (NLRI), we dive into a Wireshark packet capture of when two (2) BGP speakers attempt to establish a neighborship, we look at the BGP RFC 4271, discuss the three (3) BGP mandatory path attributes, and I recommend a number of incredible BGP resources that all network engineers should have in their tool kit. 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!