A friend of mine asked me about the OSPF forwarding address. The question was why must the network type be broadcast for the FA to be set? Why is not point to point and point to multipoint network type valid?
This post is inspired by a discussion at Twitter with Ivan Pepelnjak and Nicolas Michel. Nicolas asked what happens when there is the same route from two different OSPF processes. Which one will be selected? Ivan explained how to use
OSPF is one of the protocols where the details are very important. It has lots of bits and pieces to make it run in a proper way. I have described the forwarding address in an earlier post and this time
I’m back from London and it’s been a great experience. Many readers are interested in what the bootcamp is like. It is a big investment to go for so it is understandable that you want to know if it will
Earlier I have done some posts on route redistribution and on route filtering in different protocols. I wanted to expand on this by showing different ways we can tag and do filtering with route-maps when doing route redistribution. We start
In OSPF and other routing protocols we have something called forwarding address. This can be used to route traffic in another direction than to the router that originated the LSA. We start with the following topology. It’s a basic OSPF
OK so clearly I haven’t been updating a lot lately due to my very busy situation. I’m sorry for that but my former colleague Henri keeps nagging me for an update so I decided to write on some interesting tidbits
To become a CCIE you need detailed knowledge of OSPF. Most candidates will have read the TCP/IP Volumes by Doyle and maybe even the RFC written by J Moy. This book is also written by J Moy and it is
I’m in final preparation for my second attempt and I have been doing a lot of troubleshooting scenarios lately. I created a MPLS topology in GNS3 and sent it to my friend Darren for testing. He is taking his lab
This post is about route redistribution and the different filtering techniques we have available in our toolbelt. This post requires that you have a basic understanding of route redistribution. For some good posts look at Petr Lapukhovs posts at INE.