Who knew that the dating life of OSPF devices were controlled by the IT ELF?

First off if you are not subscribed to Keith’s Youtube channel and you are working on your CCNA, what are you thinking?  Follow this link and subscribe!  https://www.youtube.com/user/Keith6783

So IT Elf is an acronym for the OSPF states

  • I – Init
  • T – Two-way
  • E – Estart & Exchange
  • L – Loading
  • F – Full

Now as far as the dating portion, I will leave the video to explain that in detail but know that the DR (Designated Router) and BDR (Backup Designated Router) are a bit of a player as they are the only devices that build a full relationship will all the other devices.  The devices that become DROTHER routers build two way relationship with the other DROTHER devices but will build a full relationship with DR and BDR.

Check out Keith’s OSPF Neighbor States | Cisco CCNA 200-301 video