OSPF NSSA External LSA: Type 7

Still with me?  Good stuff!  We’re almost done.  Last up is the OSPF Type 7 NSSA External LSA.

OSPF External LSA: Type 5

Welcome to the OSPF Type 5 LSA!

The Type 5 LSA is used to advertise routes that are external to the OSPF domain within the OSPF domain (hence the External moniker). There are two types of Type 5 LSA’s: Type 1 and Type 2 (seriously?).  We’ll be looking at both here.