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Chapter 41
Configuring QoS
This example shows how to allocate bandwidth for the 2q2t ports:
Console> (enable) set qos wrr 2q2t 30 70
QoS wrr ratio is set successfully.
Console> (enable)
Configuring the Receive-Queue Size Ratio
For 1p1q0t ports, estimate the mix of standard-priority and strict-priority traffic on your network (for
example, 85 percent standard-priority traffic and 15 percent strict-priority traffic). Specify queue ratios
with the estimated percentages, which must range from 1 to 99 and together add up to 100.
To configure the receive-queue size ratio, perform this task in privileged mode:
Task
Configure the receive-queue size ratio between
receive queue 1 (standard priority) and receive
queue 2 (strict priority).
This example shows how to configure the receive-queue size ratio:
Console> (enable) set qos rxq-ratio 1p1q0t 80 20
QoS rxq-ratio is set successfully.
Console> (enable)
Configuring the Transmit-Queue Size Ratio
Estimate the mix of traffic of various priorities on your network (for example, 75 percent low-priority
traffic, 15 percent high-priority traffic, and 10 percent strict-priority traffic). Specify queue ratios with
the estimated percentages, which must range from 1 to 99 and together add up to 100.
To configure the transmit-queue size ratio for each port type, perform this task in privileged mode:
Task
Configure the transmit-queue size ratio.
Valid port_type parameters are 2q2t and 1p2q2t. QoS maintains separate configurations for each port
type. This example shows how to configure the transmit-queue size ratio:
Console> (enable) set qos txq-ratio 2q2t 80 20
QoS txq-ratio is set successfully.
Console> (enable)
78-13315-02
Command
set qos rxq-ratio 1p1q0t queue1-val queue2-val
Command
set qos txq-ratio port_type queue1-val
queue2-val [queue3-val]
Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
Configuring QoS
41-51
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Troubleshooting
