Lists information about any interface regarding administrative settings and operational state
show interfaces “interface-id” switchport
Lists information about all operational trunks (but no other interfaces), including the list of VLANs that can be forwarded over the trunk
show interfaces “interface-id” trunk
Lists information about the VLAN
show vlan [brief | id “vlan-id” | name “vlan-name” | summary]
Displays VLAN information
show vlan [vlan]
Lists VTP configuration and status information
show vtp status