Cisco IE 3000, Руководство по настройке программного обеспечения

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Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 36 Configuring QoS
Configuring Standard QoS
Note In this policed-DSCP map, the marked-down DSCP values are shown in the body of the matrix. The d1
column specifies the most-significant digit of the original DSCP; the d2 row specifies the
least-significant digit of the original DSCP. The intersection of the d1 and d2 values provides the
marked-down value. For example, an original DSCP value of 53 corresponds to a marked-down DSCP
value of 0.
Configuring the DSCP-to-CoS Map
You use the DSCP-to-CoS map to generate a CoS value, which is used to select one of the four egress
queues.
Table 36-14 shows the default DSCP-to-CoS map.
If these values are not appropriate for your network, you need to modify them.
Beginning in privileged EXEC mode, follow these steps to modify the DSCP-to-CoS map. This
procedure is optional.
To return to the default map, use the no mls qos dscp-cos global configuration command.
Table 36-14 Default DSCP-to-CoS Map
DSCP Value CoS Value
0–7 0
8–15 1
16–23 2
24–31 3
32–39 4
40–47 5
48–55 6
56–63 7
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2 mls qos map dscp-cos dscp-list to cos Modify the DSCP-to-CoS map.
•
For dscp-list , enter up to eight DSCP values separated by spaces.
Then enter the to keyword.
• For cos , enter the CoS value to which the DSCP values correspond.
The DSCP range is 0 to 63; the CoS range is 0 to 7.
Step 3
end Return to privileged EXEC mode.
Step 4
show mls qos maps dscp-to-cos Verify your entries.
Step 5 copy running-config startup-config (Optional) Save your entries in the configuration file.