I wanted to share a very interesting tidbit i figured out the hard way.
Again, its about NSSA areas in OSPF. When redistributing a route into an NSSA area, how is the forwarding address chosen?
Some say the lowest IP address of any loopback interfaces thats advertised into the NSSA area. Others say the highest. Which one is correct?
[Read More]Welcome back to part 3 about OSPF and external routes.
In this post I will focus on type 7 LSA’s. These are LSA’s thats created within an NSSA area. An NSSA area is, as you may know, an area which is meant as a stub area (no type 4 and 5’s), but will still allow for external routes to be introduced in the area. Instead of having type 5’s, which is not allowed in a stub area, it is allowed to have a special type of LSA called a type 7 LSA.
[Read More]