Specifications

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Catalyst 4500 Se ries S wit ch C is co IO S C om mand R efer ence —Re lease I OS XE 3 .3.0 XO(1 5.1 (1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
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.
dbl
no dbl
Syntax Description This command has no keywords or arguments.
Defaults Active queue manage ment is disable d.
Command Modes Policy-map class configuration
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
command s o n th e clas s.
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 Description
bandwidth Creates a signaling class structure that can be referred to by its
name.
class Creates a class map to be used for matching packets to the class
whose name you specify and to enter class-map configuration
mode.
policy-map Creates a policy map that can be attached to multiple ports to
specify a service policy and to enter policy-map configuration
mode.
service-policy (policy-map
class)
Creates a service policy that is a quality of service (QoS) policy
within a policy map.
show policy-map Displays information about the policy map.