Configuring The Minimum-Reserve Levels - Cisco Catalyst 3550 series Software Configuration Manual

Chapter 29 Configuring QoS
Command
Step 4 wrr-queue cos-map queue-id cos1 ... cos8 Map assigned CoS values to select one of the egress queues.
Step 5
end
Step 6 show mls qos interface queueing
Step 7
copy running-config startup-config
To return to the default CoS-to-egress-queue map, use the no wrr-queue cos-map interface
configuration command.
This example shows how to map CoS values 6 and 7 to queue 1, 4 and 5 to queue 2, 2 and 3 to queue 3,
and 0 and 1 to queue 4.
Switch(config)# interface fastethernet0/1
Switch(config-if)# wrr-queue cos-map 1 6 7
Switch(config-if)# wrr-queue cos-map 2 4 5
Switch(config-if)# wrr-queue cos-map 3 2 3
Switch(config-if)# wrr-queue cos-map 4 0 1

Configuring the Minimum-Reserve Levels

You can configure the buffer size of the minimum-reserve levels on all 10/100 ports and assign the
minimum-reserve level to an egress queue on a 10/100 Ethernet port.
Beginning in privileged EXEC mode, follow these steps to configure the egress queue sizes:
Command
Step 1 configure terminal
Step 2
mls qos
78-11194-09
Purpose
Theses are the default map values:
CoS value 0, 1 selects queue 1.
CoS value 2, 3 selects queue 2.
CoS value 4, 5 selects queue 3.
CoS value 6, 7 selects queue 4.
For queue-id, specify the ID of the egress queue. The range is 1
•
to 4, where 4 can be configured as the expedite queue. For more
information, see the "Configuring the Egress Expedite Queue"
section on page 29-66.
• For cos1 ... cos8, specify the CoS values that select a queue. Enter
up to eight CoS values. Separate each value with a space. The
range is 0 to 7.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Enable QoS on the switch.
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring Standard QoS
29-65