Master OSPF Metric: Learn Cost Calculation for Optimal Routing (Updated 2025)
OSPF (Open Shortest Path First) relies on “cost” as its metric to select the best path in a network. For CCNA and CCNP students, understanding OSPF cost calculation is crucial for exam topics like route selection and optimization. The default reference bandwidth is 100 Mbps (or 10^8 bps), and lower costs indicate preferred paths. This