Inter-VLAN Routing: SVI Down
A configured SVI does not become operational unless its VLAN has an active Layer 2 presence. This lab turns that IOS behavior into a repeatable troubleshooting check.
The problem
Clients in VLAN 30 cannot reach their default gateway. The multilayer switch has the correct SVI address, but the SVI remains down/down because no active access or trunk port carries VLAN 30.
What you'll practice
- Read SVI status
- Verify VLAN existence and port membership
- Understand SVI operational dependencies
- Confirm inter-VLAN routing
The topology
A multilayer switch provides gateways for multiple user VLANs; VLAN 30 is absent from the live switching path.
Commands to run yourself
The real diagnostic commands for this lab, copy-paste ready. Run these in the same order to reproduce the investigation on your own session.
show ip interface briefshow vlan briefshow interfaces trunkTopology diagram
Frequently asked
Is this aligned to CCNA practice?
Yes. It focuses on configuration, verification, and troubleshooting skills covered by the CCNA-level technology domain named on this lab.
Ready to run this lab yourself?
No setup, no image sourcing. Book a session or ask for a live demo.