Cisco Systems 4500 Configuring System Queue Limit

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Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 37 Configuring Quality of Service Configuring QoS on Supervisor Engine 6-E, Supervisor Engine 6L-E, Catalyst 4900M, and Catalyst 4948E
service-policy input my
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interface GigabitEthernet2/6
switchport mode trunk
Configuring System Queue Limit
Note This feature is supported on Supervisor Engine 6-E, Supervisor Engine 6L-E, Catalyst 4900M, and
Catalyst 4948E, and Catalyst 4948E-F.
Note This feature is available only from Cisco IOS Release 15.0(2)SG1 and later.
With the hw-module system max-queue-limit command, the Catalyst 4500 series switch allows you to
change the queue limit for all interfaces globally, instead of applying a policy with queue limit to all the
interfaces.
This command allows you to change the queue limit for all interfaces globally rather than apply a policy
with a queue limit to all the interfcaes
To set the queue limit globally, perform this task:
This is a global configuration command. It can be overriden by the per port, per class, queue-limit
command.
For a standalone supervisor engine, you must reboot the engine after applying this command.
For redundant supervisors in SSO mode, you must enter the redundancy reload shelf command enforce
reboot to both the supervisors.
For redundancy supervisors in RPR mode, you must execute two consecutive switchovers to enforce the
system queue limit on both the supervisors.
Command Purpose
Step 1 Switch# configure terminal Enters global configuration mode.
Step 2 Switch(config)# hw-module system
max-queue-limit max-queue-limit Sets the queue limit for all interfaces globally
Valid values are from 1024 to 8184.
The value must be a multiple of 8.
Step 3 Switch(config)# exit Returns to privileged EXEC mode.
Step 4 Switch# reload
or
Switch# redundancy reload shelf
Switch# redundancy force-switchover
Reloads standalone supervisor engine.
Reloads redundancy supervisor engine in SSO mode.
Reloads redundancy supervisor engine in RPR mode.
This command must be followed by another redundancy
force-switchover.