Edge-Core ECS4120-28F, Справочное руководство, Страница: 626 / 938

Chapter 23
| Quality of Service Commands
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Create a Class Map ( page 625 ) before assigning it to a Policy Map.
Example
This example creates a policy called “rd-policy,” uses the class command to specify
the previously defined “rd-class,” uses the set command to classify the service that
incoming packets will receive, and then uses the police flow command to limit the
average bandwidth to 100,000 Kbps, the burst rate to 4000 bytes, and configure the
response to drop any violating packets.
Console(config)#policy-map rd-policy
Console(config-pmap)#class rd-class
Console(config-pmap-c)#set cos 0
Console(config-pmap-c)#police flow 10000 4000 conform-action transmit
violate-action drop
Console(config-pmap-c)#
class
This command defines a traffic classification upon which a policy can act, and
enters Policy Map Class configuration mode. Use the
no form to delete a class map.
Syntax
[ no ] class class-map-name
class-map-name - Name of the class map. (Range: 1-32 characters)
Default Setting
None
Command Mode
Policy Map Configuration
Command Usage
◆
Use the policy-map command to specify a policy map and enter Policy Map
configuration mode. Then use the class command to enter Policy Map Class
configuration mode. And finally, use the set command and one of the police
commands to specify the match criteria, where the:
■
set phb command sets the per-hop behavior value in matching packets.
(This modifies packet priority for internal processing only.)
■
set cos command sets the class of service value in matching packets.
(This modifies packet priority in the VLAN tag.)
■
police commands define parameters such as the maximum throughput,
burst rate, and response to non-conforming traffic.
◆
Up to 16 classes can be included in a policy map.