I recently saw a great question on Reddit, on why Type-5 (AS-external) LSAs are flooded, in comparison to Type-3 (Summary) that are regenerated at the ABR. To investigate this, we’ll use the following simple topology where R2 and R3 are
ASBR in NSSA – Choosing what IP to use as forwarding address
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