Today we’re going to tackle one of the most crucial yet often misunderstood parts of OSPF—LSA Types. When I train CCNA and CCNP candidates, many get confused with when and where to use Type 1 vs Type 3 or what the heck Type 7 LSAs […]
![OSPF LSA Types Explained: Complete Guide with CLI, EVE-NG Lab & Real-World Use Cases. [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/OSPF-LSA-Types-Explained_Complete-Guide-with-CLI-EVE-NG-Lab-Real-World-Use-Cases_networkjourney.png)
![Ticket#14 - OSPF Routes Missing: Area Type Mismatch (Stub vs NSSA) Fixed [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Ticket14_OSPF-Routes-Missing-Area-Type-Mismatch-Stub-vs-NSSA-Fixed_networkjourney.png)
Problem Summary An enterprise network running OSPF faced missing routes in one part of the topology. The issue was traced to an OSPF area type mismatch — one router was configured as a Stub area, while its neighbor was configured as NSSA (Not-So-Stubby Area). This […]