Topic

Cost practice labs

2 hands-on Cost scenarios you build in your own Cisco Modeling Labs instance and grade against the answer key. Cost configuration and troubleshooting practice for CCNA and CCNP.

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IntermediateDailyLocked

CCNA Foundations: OSPF Day 4 — Cost & Deterministic Path Selection

Build a 5-node triangle OSPF topology with a branch and a data center connected by two paths: a direct link and an indirect path via a core router. Implement OSPFv2 with clean hygiene (router-ids, passive on LANs), then influence path selection by adjusting interface cost so branch-to-DC traffic prefers the core path. Verify the chosen path from the end hosts using traceroute and confirm symmetric routing by validating the reverse path.

CCNA55 min5 objectives

IntermediateLocked

OSPF Cost & Path Selection: Deterministic Control (3 Routers)

Build a 3-router triangle with two end-to-end paths between Branch A and the Data Center. Stand up OSPF area 0, create an ECMP condition, then intentionally steer traffic using ip ospf cost. Verify from the end hosts and troubleshoot common OSPF control-plane mismatches.

CCNA55 min5 objectives