Cisco Catalyst 3120 Command Reference Manual page 533

Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands
Related Commands Command
clear l2protocol-tunnel counters
l2protocol-tunnel
l2protocol-tunnel cos
OL-12248-01
Description
Clears counters for protocol tunneling ports.
Enables Layer 2 protocol tunneling for CDP, STP, or VTP
packets on an interface.
Configures a class of service (CoS) value for tunneled Layer 2
protocol packets.
Cisco Catalyst Blade Switch 3120 for HP Command Reference
show l2protocol-tunnel
2-505