OSPF is a popular link state routing protocol that can be fine-tuned in many ways. Some of the most common methods of fine tuning include manipulating the Designated Router/Backup Designated Router (DR/BDR) election process, propagating default routes, fine-tuning the OSPFv2 and OSPFv3 interfaces, and enabling authentication.

This chapter of OSPF describes these tuning features, the configuration mode commands to implement these features for both IPv4 and IPv6, and the components and commands used to troubleshoot OSPFv2 and OSPFv3.