1       组网需求

2  配置思路

l              配置acl 3000&＃xff0c;匹配DSCP值为63的数据流

l              配置流分类car_class&＃xff0c;匹配acl 3000

l              配置流行为car_behavior&＃xff0c;动作为car

l              配置QoS策略car_policy&＃xff0c;绑定流分类和流行为

l              因DSCP不属于默认流模板中的值&＃xff0c;所以得配置自定义流模板dscp_flow

l              将流模板下发到端口g3/1/2

l              将QoS策略下发到端口g3/1/2

3  配置步骤

# 定义ACL 3000&＃xff0c;匹配DSCP值为63的数据流

[H3C] acl number 3000

[H3C-acl-adv-3000] rule 0 permit ip dscp 63

# 定义流分类car_class&＃xff0c;匹配acl 3000

[H3C] traffic classifier car_class

[H3C-classifier-car_class] if-match acl 3000

# 定义流行为car_behavior&＃xff0c;动作为car

[H3C] traffic behavior car_behavior

[H3C-behavior-car_behavior] car cir 10240 pir 20480

# 定义QoS策略car_policy,绑定流行为和流动作

[H3C] qos policy car_policy

[H3C-qospolicy-car_policy] classifier car_class behavior car_behavior

# 定义自定义流模板dscp_flow&＃xff0c;流模板中字段值为DSCP

[H3C] flow-template dscp_flow basic dscp

# 将自定义的流模板下发到接口g3/1/2

[H3C] interface GigabitEthernet 3/1/2

[H3C-GigabitEthernet3/1/2] flow-template dscp_flow

# 将QoS策略下发到接口g3/1/2出方向

[H3C] interface GigabitEthernet 3/1/2

[H3C-GigabitEthernet3/1/2] qos apply policy car_policy outbound

# 验证配置信息

[H3C-GigabitEthernet3/1/2] display qos policy interface GigabitEthernet 3/1/2

  Interface: GigabitEthernet3/1/2

  Direction: Outbound

  Policy: car_policy

   Classifier: car_class

     Operator: AND

     Rule(s) : If-match acl 3000

     Behavior: car_behavior

      Committed Access Rate:

        CIR 10240 (kbps), CBS 640000 (byte), EBS 0 (byte), PIR 20480 (kbps)

        Red Action: discard

        Green : 0(Bytes)

        Yellow: 0(Bytes)

        Red   : 0(Bytes)

&  说明&＃xff1a;

l              报文&＃xff08;如IPV4/IPV6单播报文、组播报文、隧道报文、L3×××入隧道报文&＃xff09;进行三层转发时&＃xff0c;car命令中的报文长度只计算报文IP首部和载荷的长度。

l              聚合CAR与普通CAR不同&＃xff0c;在多个端口应用同一聚合CAR&＃xff0c;则多个端口的流量总和被限速在流量监管的范围之内&＃xff0c;而普通car则每个端口的流量被限速在流量监管的范围之内

l              聚合CAR与accounting&＃xff0c;filter deny冲突&＃xff0c;car与filter deny冲突  

l              本文档不严格与具体软、硬件版本对应。