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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Command Reference, Cisco IOS Release 15.1(3)MR
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Chapter Cisco MWR 2941 Router Command Reference, Release 15.1(3)MR
queue-limit
Usage Guidelines Weighted Fair Queueing
Weighted fair queueing (WFQ) creates a queue for every class for which a class map is defined. Packets
that satisfy the match criterion for a class accumulate in the queue reserved for the class until they are
sent, which occurs when the queue is serviced by the fair queueing process. When the maximum packet
threshold that you defined for the class is reached, enqueueing of any further packets to the class queue
causes tail drop or, if WRED is configured for the class policy, packet drop to take effect.
Overriding Queue Limits Set by the bandwidth Command
Use the bandwidth command with the Modular Quality of Service (QoS) Command-Line Interface
(CLI) (MQC) to specify the bandwidth for a particular class. When used with MQC, the bandwidth
command has a default queue limit for the class. This queue limit can be modified using the queue-limit
command, thereby overriding the default set by the bandwidth command.
Note Using the queue-limit command to modify the default queue limit is especially important for
higher-speed interfaces, in order to meet the minimum bandwidth guarantees required by the interface.
Examples The following example configures a policy map called policy11. The policy11 policy map contains a
class called acl203. The policy map for this class is configured so that the queue reserved for the class
has a maximum queue size of 40 packets.
Router(config)# policy-map policy11
Router(config-pmap)# class acl203
Router(config-pmap-c)# bandwidth 2000
Router(config-pmap-c)# queue-limit 40 packets
12.2SX This command is supported in the Cisco IOS Release 12.2SX train. Support
in a specific 12.2SX release of this train depends on your feature set,
platform, and platform hardware.
12.4(20)T The following argument/keyword combinations were added:
• queue-limit-size bytes
• queue-limit-size ms
• queue-limit-size packets
Cisco IOS XE
Release 2.1
This command was implemented on Cisco ASR 1000 series routers.
12.4(20)MR This command was integrated into Cisco IOS Release 12.4(20)MR.
12.2(33)MRA This command was integrated into Cisco IOS Release 12.2(33)MRA.
15.0(1)MR This command was integrated into Cisco IOS Release 15.0(1)MR. This
release also does not support Weighted Random Early Detection (WRED).
Release Modification
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