Cisco Catalyst 3550

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Catalyst 3550 Multilayer Switch Command Reference
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Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
l2protocol-tunnel
When the drop threshold is reached, the interface drops Layer 2 protocol packets until the rate at which
they are received is below the drop threshold.
The configuration is saved in NVRAM.
Note For more information about Layer 2 protocol tunneling, see the software configuration guide for this
release.
Examples This example shows how to enable protocol tunneling for CDP packets and to set the shutdown threshold
to 50 packets per second:
Switch(config-if)# l2protocol-tunnel cdp
Switch(config-if)# l2protocol-tunnel shutdown-threshold cdp 50
This example shows how to enable protocol tunneling for STP packets and to set the drop threshold to
400 packets per second:
Switch(config-if)# l2protocol-tunnel stp
Switch(config-if)# l2protocol-tunnel drop-threshold stp 400
This example shows how to enable point-to-point protocol tunneling for PAgP and UDLD packets and
to set the PAgP drop threshold to 1000 packets per second:
Switch(config-if)# l2protocol-tunnel point-to-point pagp
Switch(config-if)# l2protocol-tunnel point-to-point udld
Switch(config-if)# l2protocol-tunnel drop-threshold point-to-point pagp 1000
Related Commands Command Description
l2protocol-tunnel cos Configures a class of service (CoS) value for all tunneled Layer 2
protocol packets.
show errdisable recovery Displays error-disabled recovery timer information.
show l2protocol-tunnel Displays information about ports configured for Layer 2 protocol
tunneling, including port, protocol, class of service (CoS), and
thresholds.