Cisco VLANs & trunks cheat sheet
Understand access VLANs, tagged links, and Layer 2 boundaries.
Updated · Cisco · 5 min read
| Command | What it does |
|---|---|
show vlan brief | Inspect VLAN membership |
show interfaces trunk | Inspect trunk status |
show interfaces switchport | Inspect switchport settings |
show spanning-tree | Inspect spanning tree state |