1-81
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring QoS
Configuring Standard QoS
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
In this example, the DSCP values (0 to 6) are assigned the WTD threshold of 50 percent and will be
dropped sooner than the DSCP values (20 to 26) assigned to the WTD threshold of 70 percent.
Allocating Buffer Space Between the Ingress Queues
You define the ratio (allocate the amount of space) with which to divide the ingress buffers between the
two queues. The buffer and the bandwidth allocation control how much data can be buffered before
packets are dropped.
Beginning in privileged EXEC mode, follow these steps to allocate the buffers between the ingress
queues. This procedure is optional.
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.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
mls qos srr-queue input buffers
percentage1 percentage2
Allocate the buffers between the ingress queues
By default 90 percent of the buffers are allocated to queue 1, and 10
percent of the buffers are allocated to queue 2.
For
percentage1 percentage2,
the range is 0 to 100. Separate each value
with a space.
You should allocate the buffers so that the queues can handle any
incoming bursty traffic.
Step 3
end
Return to privileged EXEC mode.
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.
Содержание Catalyst 3560-X Series
Страница 12: ...Contents 10 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 13: ...Contents 11 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 14: ...Contents 12 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 15: ...Contents 13 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 16: ...Contents 14 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 17: ...Contents 15 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 18: ...Contents 16 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 19: ...Contents 17 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 20: ...Contents 18 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 21: ...Contents 19 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 22: ...Contents 20 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 23: ...Contents 21 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 24: ...Contents 22 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 25: ...Contents 23 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 26: ...Contents 24 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 27: ...Contents 25 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 28: ...Contents 26 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 29: ...Contents 27 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 30: ...Contents 28 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 31: ...Contents 29 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 32: ...Contents 30 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 33: ...Contents 31 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 34: ...Contents 32 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 35: ...Contents 33 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 36: ...Contents 34 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 37: ...Contents 35 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 38: ...Contents 36 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...
Страница 42: ...56 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 Preface ...
Страница 1416: ...1 36 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 Chapter 1 Troubleshooting Troubleshooting Tables ...
Страница 1538: ...Index IN 58 Catalyst 3750 X and 3560 X Switch Software Configuration Guide OL 25303 03 ...