BeginnerPublished 2026-09-28
CCNA L3 Switching: Retire the Router-on-a-Stick
Today's daily lab
The router-on-a-stick is gone. Turn the distribution switch into the gateway for both VLANs.
Learning objectives
- Build inter-VLAN routing on a multilayer switch
- Verify each VLAN's gateway answers from its host
- Trace a packet between VLANs through the switch's routing table
Troubleshooting focus
- A gateway that won't answer: check the VLAN interface is up and addressed
- Hosts reach their gateway but not the other VLAN: check the switch is routing
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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