Specifications

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
l2protocol-tunnel drop-threshold
l2protocol-tunne l drop-threshold
To set a drop threshold for the maximum rate of Layer 2 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 the Cisco Disc overy Protocol (CDP), Spanning Tree Protocol (STP), or VLAN
Trunking Protocol (V TP) packet s. To disable the drop thresho ld on the interface , use the no form of this
command.
l2protocol-tunnel drop-threshold [cdp | stp | vtp] value
no l2protocol-tunnel drop-threshold [cdp | stp | vtp] value
Syntax Description
Defaults T he default is no drop threshol d for the number of the Laye r 2 protocol packets.
Command Modes Interface configuration mode
Usage Guidelines The l2protocol-tunnel drop-threshold command controls 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 appl ied to each of the tunneled La yer 2 protocol types. If you also set a
shutdown threshold on the inter face, the drop-thresho ld value must be less than or equal to the
shutdown-threshold valu e.
When the drop threshold is reached, the interface drops the Layer 2 protocol packets until the rate at
which they are received is below the drop threshold.
Examples This exampl e shows how to configure the drop thr eshold rate:
Switch(config-if)# l2protocol-tunnel drop-threshold cdp 50
Switch(config-if)#
Related Commands
cdp (Optional) Specifies a drop threshold for CDP.
stp (Optional) Specifies a drop threshold for STP.
vtp (Optional) Specifies a drop threshold for VTP.
value Specifies a threshold in packets pe r second to be received for encaps ulation before the
interface shuts down, or specifies the threshold before the interface drops packets. The
range is 1 to 4096. The default is no threshold.
Command Description
l2protocol-tunnel Enables protocol tunneling on an interface.
l2protocol-tunnel cos Configures the class of service (CoS) value for all tunneled
Layer 2 protocol packet s.
l2protocol-tunnel shutdown-threshold C onfigures the protocol tunneling encapsulation rate.