Scaling OSPF Through Hierarchical Design
OSPF can be used in some networks with very little thought about design issues. You just turn on OSPF in all the routers, and it works! However, in large networks, engineers need to think about and plan how to use several OSPF features that allow OSPF to scale well. For instance, the OSPF design in Figure 20-15 uses a single OSPF area, because this small internetwork does not need the scalability benefits of OSPF areas.
Figure 20-15 Single-Area OSPF
Using a single OSPF area for smaller internetworks, as in Figure 20-15, works well. The configuration is simple, and some of the hidden details in how OSPF ...
Get CCNA Data Center DCICN 640-911 Official Cert Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
