Dbl; This Command Was Introduced On The Catalyst 4500 Series Switch - Cisco Catalyst 4500 Series Command Reference Manual

dbl

dbl
To enable active queue management on a transmit queue used by a class of traffic, use the dbl command.
Use the no form of this command to return to the default setting.
Syntax Description
This command has no keywords or arguments.
Defaults Active queue management is disabled.
Command Modes Policy-map class configuration
Command History Release
12.1(8a)EW
12.2(40)SG
Usage Guidelines The semantics of the DBL configuration is similar to the WRED algorithm. The dbl command can
operate alone on class-default; otherwise, it requires you to configure the bandwidth or shape
commands on the class.
Examples This example shows how to enable dbl action in a class:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# policy-map policy1
Switch(config-pmap)# class class1
Switch(config-pmap-c)# dbl
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# service-policy output policy1
Switch(config-if)# end
Related Commands Command
bandwidth
class
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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dbl
no dbl
Modification

This command was introduced on the Catalyst 4500 series switch.

Support added on Supervisor Engine 6E.
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
Description
Creates a signaling class structure that can be referred to by its
name.
Creates a class map to be used for matching packets to the class
whose name you specify and to enter class-map configuration
mode.
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