CCNA — IP Routing and OSPF

Routing is the beating heart of any enterprise network. Without it, two machines sitting on different subnets simply cannot talk to each other. This course, level 3 of the CCNA track, takes you from IP routing theory straight into hands-on practice.

You will start with static and default routes (IPv4 and IPv6) before diving into OSPF, the dynamic routing protocol most widely deployed in businesses: single-area setups, OSPFv3 for IPv6, multi-area design, default route propagation and advanced tuning (cost, priority, authentication). The final module is devoted entirely to OSPF troubleshooting: adjacencies, show and debug commands, and fixing the faults you will actually meet in the field.

Every lesson is built on real labs and Cisco IOS configurations you can reproduce in Packet Tracer or on physical gear. By the end, you will be able to design, configure, verify and troubleshoot a complete OSPF domain.