L2Protocol-Tunnel Drop-Threshold - Cisco 4500M Command Reference Manual

Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches

l2protocol-tunnel drop-threshold

To set a drop threshold for the maximum rate of Layer2 protocol packets per second to be received
before an interface drops packets, use the I2protocol-tunnel drop-threshold command. You can set the
drop threshold for Cisco Discovery Protocol (CDP), Spanning Tree Protocol (STP), or VLAN Trunking
Protocol (VTP) packets. Use the no form of this command to disable the drop threshold on the interface.
Syntax Description
cdp
stp
vtp
value
Defaults
The default is no drop threshold for the number of Layer 2 protocol packets.
Command Modes
Interface configuration
Command History Release
12.2(18)EW
Usage Guidelines
Enter the drop-threshold keyword to control the number of protocol packets per second that are
received on an interface before it drops packets. When no protocol option is specified with a keyword,
the threshold is applied to each of the tunneled Layer 2 protocol types. If you also set a shutdown
threshold on the interface, the drop-threshold value must be less than or equal to the shutdown-threshold
value.
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.
Examples
This example shows how to configure the drop threshold rate:
Switch(config-if)# l2protocol-tunnel drop-threshold cdp 50
Switch(config-if)#
Related Commands
l2protocol-tunnel
l2protocol-tunnel cos
l2protocol-tunnel shutdown-threshold
78-16201-01
l2protocol-tunnel drop-threshold [cdp | stp | vtp] value
no l2protocol-tunnel drop-threshold [cdp | stp | vtp] value
(Optional) Specifies a drop threshold for CDP.
(Optional) Specifies a drop threshold for STP.
(Optional) Specifies a drop threshold for VTP.
Specifies a threshold in packets per second to be received for encapsulation before the
interface shuts down, or specify the threshold before the interface drops packets. The
range is 1 to4096. The default is no threshold.
Modification
Support for this command was introduced on the Catalyst 4500 series switch.
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
l2protocol-tunnel drop-threshold
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