36-59
Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 36 Configuring QoS
Configuring Standard QoS
To return to the default setting, use the
no mls qos srr-queue input buffers
global configuration
command.
This example shows how to allocate 60 percent of the buffer space to ingress queue 1 and 40 percent of
the buffer space to ingress queue 2:
Switch(config)#
mls qos srr-queue input buffers 60 40
Allocating Bandwidth Between the Ingress Queues
You need to specify how much of the available bandwidth is allocated between the ingress queues. The
ratio of the weights is the ratio of the frequency in which the SRR scheduler sends packets from each
queue. The bandwidth and the buffer allocation control how much data can be buffered before packets
are dropped. On ingress queues, SRR operates only in shared mode.
Beginning in privileged EXEC mode, follow these steps to allocate bandwidth between the ingress
queues. This procedure is optional.
To return to the default setting, use the
no mls qos srr-queue input bandwidth
global configuration
command.
Step 4
show mls qos interface buffer
or
show mls qos input-queue
Verify your entries.
Step 5
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
mls qos srr-queue input bandwidth
weight1 weight2
Assign shared round robin weights to the ingress queues.
The default setting for
weight1 and weight2
is 4 (1/2 of the bandwidth is
equally shared between the two queues).
For
weight1
and
weight2
, the range is 1 to 100. Separate each value with
a space.
SRR services the priority queue for its configured weight as specified by
the
bandwidth
keyword in the
mls qos srr-queue input priority-queue
queue-id
bandwidth
weight
global configuration command. Then, SRR
shares the remaining bandwidth with both ingress queues and services
them as specified by the weights configured with the
mls qos srr-queue
input bandwidth
weight1 weight2
global configuration command. For
more information, see the
“Configuring the Ingress Priority Queue”
section on page 36-60
.
Step 3
end
Return to privileged EXEC mode.
Step 4
show mls qos interface queueing
or
show mls qos input-queue
Verify your entries.
Step 5
copy running-config startup-config
(Optional) Save your entries in the configuration file.
