OSPF Router ID & Cost Explained — Selection Rules and Path Choice (CCNA 3) скачать в хорошем качестве

OSPF Router ID & Cost Explained — Selection Rules and Path Choice (CCNA 3)

This video explains OSPF Router ID selection and the OSPF cost metric as part of my FREE CCNA 3 course. You’ll learn how OSPF chooses the Router ID, why it must be unique, and why it plays a critical role in the protocol. We also explain what the OSPF cost metric represents, why lower cost is preferred, and how cumulative cost determines the best path through a network. Topics covered: • Router ID selection order (manual, loopback, interface) • Why Router ID uniqueness matters • What the OSPF cost metric represents • Why lower cost paths are preferred • How cumulative cost determines route selection This video focuses on conceptual understanding without deep formulas, reference-bandwidth tuning, or configuration labs — ideal for CCNA studies and anyone building a clear mental model of OSPF path selection. 📚 Part of the IT Explained FREE CCNA 3 course. ▶️ Watch OSPF Fundamentals first for best understanding.