IntermediatePublished 2026-10-01
CCNA L3 Switching: Bring the Switch Into OSPF
Today's daily lab
Lab 4 of 4 in CCNA Layer 3 Switching: Route on the Switch · ← Previous
CCNA exam domain: IP Connectivity
The static routes are gone. Bring the distribution switch into OSPF so the campus and the edge learn each other.
Learning objectives
- Run OSPF on a multilayer switch across its routed uplink
- Advertise every user VLAN without forming adjacencies toward hosts
- Verify the edge learns the campus subnets and hosts lease again
Troubleshooting focus
- No neighbor on the uplink: compare area and subnet on both ends
- A VLAN missing from the edge's table: check what the switch advertises
Topology
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How this lab is graded
- Build it your way. Where a lab lets you choose a value — a VLAN name, an interface description — grading checks that you configured it, not which name you picked. Names that another line has to reference, like an ACL applied with
access-class, are stated in the guide and do have to match. - Addresses, modes and protocol keywords are exact. An IP address, a subnet mask,
switchport mode trunk, an encapsulation — these carry the meaning of the lab, so they are graded as written in the guide. - Grading reads your saved configuration. Export the lab from CML after you have configured it, and make sure anything you set is in the
running-config— a change that only exists in a terminal session never reaches the grader. - You can submit as many times as you like. Your best score stands, and each attempt tells you which checks passed so you can work the gaps.
- Scored something you believe is correct? Use Report an issue on this page — that is exactly how the grading fixes in the changelog got found.
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