Cisco IE 4000, Руководство по настройке программного обеспечения

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Configuring QoS
Configuring QoS
After you have created an output policy map, you attach it to an egress port. See Configuring Output Policy Maps,
page 628 .
Use the no form of the appropriate command to delete an existing policy map or class map or to delete a WTD
configuration.
This example shows a policy map with a specified bandwidth and queue size. Traffic that is not DSCP 30 or 10 is
assigned a queue limit of 112 packets. Traffic with a DSCP value of 30 is assigned a queue-limit of 48 packets, and traffic
with a DSCP value of 10 is assigned a queue limit of 32 packets. All traffic not belonging to the class traffic is classified
into class-default, which is configured with 10 percent of the total available bandwidth and a large queue size of 256
packets.
Switch(config)# policy-map gold-policy
5. queue-limit [ cos value | dscp value |
precedence value | qos-group value ]
number-of-packets [ packets ]}
Specify the queue size for the traffic class.

(Optional) For cos value , specify a CoS value. The range is
from 0 to 7.

(Optional) For dscp value , specify a DSCP value. The range
is from 0 to 63.

(Optional) For precedence value , specify an IP precedence
value. The range is from 0 to 7.

(Optional) For qos-group value , enter a QoS group value.
The range is from 0 to 99.

For number-of-packets , set the minimum threshold for WTD.
The range is from 16 to 544, in multiples of 16, where each
packet is a fixed unit of 256 bytes.
Note: For optimal performance, we strongly recommend that you
configure the queue-limit to 272 or less.
The value is specified in packets by default, but the packets
keyword is optional.
Note: Multiple output policy maps can use the same queue-limit
configuration. However these policy maps can have only three
unique queue-limit configurations.
6. exit Return to policy-map configuration mode.
7. exit Return to global configuration mode.
8. interface interface-id Enter interface configuration mode for the interface to which you
want to attach the policy.
9. service-policy output policy-map-name Attach the policy map (created in Step 2) to the egress interface.
Note: If you try to attach an output policy map that contains a
fourth queue-limit configuration, you see an error message, and
the attachment is not allowed.
10. end Return to privileged EXEC mode.
11. show policy-map [ policy-map-name [ class
class-map-name ]]
Verify your entries.
12. copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose