In this post i would like to explain how you can fix a multicast RPF failure using BGP. If you take a look at the topology in figure 1, we have a network running EIGRP as the IGP and where R1 advertises its loopback 0 (1.

NTP is one of those things that really keeps messing with my head. To break it down, what does it do for us? Simple. It provides the correct time of the day. How does it accomplish this? Now this is where it gets interesting.

My apologies for the huge lack of content lately. I have been insanely busy with work along with doing lots of labs. Especially IPv6 labs was challenging. I have done 50% of a blog post about my trials with this beast.

The role of the designated router has been bothering me every now and again. I always end up forgetting its role, where its present, and how its elected. So i thought i would post some info on it, maybe to keep my own mind fresh 🙂

I knew it would be tricky before I even started with the multicast section, but not this hard 🙂 So I wrote about PIM-DM and its flooding behavior, and how it would make sure data was flowing from the source to the receivers.

Ive started on the Developing IP Multicast Networks book from Beau Williamson. This book is apparently “the” book on multicasting, so I hope it will help me out with this weak area of mine. So far ive read about DVMRP which is not on the blueprint, but it sounded like it would be a good help to understanding PIM modes, which are on the blueprint, so I decided to go through it anyways.