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Cisco Catalyst Blade Switch 3030 Command Reference
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Chapter 2 Cisco Catalyst Blade Switch 3030 Cisco IOS Commands
mls qos srr-queue input dscp-map
Usage Guidelines
The DSCP assigned at the ingress port selects an ingress or egress queue and threshold.
The drop-threshold percentage for threshold 3 is predefined. It is set to the queue-full state. You can
assign two weighted tail-drop (WTD) threshold percentages to an ingress queue by using the
mls qos
srr-queue input threshold
global configuration command.
You can map each DSCP value to a different queue and threshold combination, allowing the frame to
follow different behavior.
You can map up to eight DSCP values per command.
Examples
This example shows how to map DSCP values 0 to 6 to ingress queue 1 and to threshold 1 with a drop
threshold of 50 percent. It maps DSCP values 20 to 26 to ingress queue 1 and to threshold 2 with a drop
threshold of 70 percent:
Switch(config)#
mls qos srr-queue input dscp-map queue 1 threshold 1 0 1 2 3 4 5 6
Switch(config)#
mls qos srr-queue input dscp-map queue 1 threshold 2 20 21 22 23 24 25 26
Switch(config)#
mls qos srr-queue input threshold 1 50 70
You can verify your settings by entering the
show mls qos maps
privileged EXEC command.
Related Commands
Command
Description
mls qos srr-queue input bandwidth
Assigns shaped round robin (SRR) weights to an ingress
queue.
mls qos srr-queue input buffers
Allocates the buffers between the ingress queues.
mls qos srr-queue input cos-map
Maps class of service (CoS) values to an ingress queue
or maps CoS values to a queue and to threshold ID.
mls qos srr-queue input priority-queue
Configures the ingress priority queue and guarantees
bandwidth.
mls qos srr-queue input threshold
Assigns WTD threshold percentages to an ingress queue.
show mls qos maps
Displays QoS mapping information.
