Day14 - OSPF Virtual Links and Authentication (Not sure what happened to day 13)

Hello! Welcome to the last day of my video training on OSPF. Today's video will cover OSPF virtual links, and also authentication. Remember that authentication errors, whether it be mis-match in password, or lack of authentication (on either side) or even the wrong type of authentication can cause neighbor relationship to break in your OSPF.

In my previous videos, I discussed the concept of an ABR. In today's video, we will talk about how to turn non ABR routers into ABR like routers by using virtual link. Virtual link is a method that we can use to connect and virtually extend Area 0. This way, if we have multiple areas that are not physically adjacent to Area 0 can have a way to connect to Area 0.

Please enjoy!