R0106-HP MSR Router Series ACL and QoS Configuration Guide(V7)

CBQ configuration example

Network requirements

As shown in Figure 17, configure a QoS policy to meet the following requirements:

• Traffic from Router C is classified into three classes based on DSCP values. Perform AF for traffic with

DSCP values of AF11 and AF21, and set a minimum guaranteed bandwidth percentage of 5% for

the traffic.

• Perform EF for traffic with a DSCP value of EF and set the maximum bandwidth percentage for the

traffic to 30%.

Before performing the configuration, make sure:

• The route from Router C to Router D through Router A and Router B is reachable.

• The DSCP fields have been set for the traffic before the traffic enters Router A.

Figure 17 Network diagram

Configuring Router A

# Define three classes to match the IP packets with the DSCP values AF11, AF21, and EF, respectively.

<RouterA> system-view

[RouterA] traffic classifier af11_class

[RouterA-classifier-af11_class] if-match dscp af11

[RouterA-classifier-af11_class] quit

[RouterA]traffic classifier af21_class

[RouterA-classifier-af21_class] if-match dscp af21

[RouterA-classifier-af21_class] quit

[RouterA] traffic classifier ef_class

[RouterA-classifier-ef_class] if-match dscp ef

[RouterA-classifier-ef_class] quit

# Define two traffic behaviors, and enable AF and set a minimum guaranteed bandwidth percentage of

5% in each traffic behavior.

[RouterA] traffic behavior af11_behav

[RouterA-behavior-af11_behav] queue af bandwidth pct 5

[RouterA-behavior-af11_behav] quit

[RouterA] traffic behavior af21_behav

[RouterA-behavior-af21_behav] queue af bandwidth pct 5

[RouterA-behavior-af21_behav] quit

Router A

GE2/1/0

1.1.1.1/24

GE2/1/0

1.1.1.2/24

Router C

Router D

Router B

AF11

AF21

EthernetEthernet