We're Sorry, Full Content Access is for Members Only...

If you like to keep on reading, Become a Member Now! Here is Why:

  • Learn any CCNA, CCNP and CCIE R&S Topic. Explained As Simple As Possible.
  • Try for Just $1. The Best Dollar You've Ever Spent on Your Cisco Career!
  • Full Access to our 619 Lessons. More Lessons Added Every Week!
  • Content created by Rene Molenaar (CCIE #41726)

 

414 New Members signed up the last 30 days!

satisfaction-guaranteed

100% Satisfaction Guaranteed!
You may cancel your monthly membership at any time.
No Questions Asked!

Tags:


Forum Replies

  1. Hi Rajiv,

    OSPF is a link-state routing protocol but it only uses SPF within an area. A router in one area doesn’t know what the topology looks like from another area.

    Between areas, OSPF works similar to distance vector routing protocols like RIP or EIGRP. To ensure we have a loop-free topology, we have a hierarchical model. All areas have to be connected to the backbone and traffic from one area to another always has to go through the backbone area.

    Hope this helps.

    Rene

  2. It has to do with the design of the network in question. The benefits you see of an area becoming a stub (reduced LSDB size) comes at a cost, which is the loss of some routing information details. This translates into routers within a stub not having all the information necessary to make the best possible choices.

    For example, suppose you have an area (which is non-zero, of course), that has multiple exit points. Now imagine that at each of those exit points there are separate external routing domains (say, EIGRP or BGP, etc). If this area is a stub, Type-5

    ... Continue reading in our forum

  3. Thanks for making a video on this series. I am always thankful when I get to a video series as I read the book and website pages and just get worn out from studying 2-6 hours a day through the week. Not to mention on CCNP ROUTE I have taken to reading every single forum post as an added learning tool.

    Sometimes I just want to lean back in chair put on headset and listen to video as it allows me to relax a bit when tired towards end of day so uch thanks for those videos. Anyway great lesson!

    I am getting close to end of OSPF website lessons already finished

    ... Continue reading in our forum

  4. Glad to hear you like it :slight_smile: Vimeo now also supports different playback speeds so you can set them to 1.5x or 2x if you like. I usually like videos when a topic is completely new to me or when I’m too tired to do anything else.

17 more replies! Ask a question or join the discussion by visiting our Community Forum