
In terms of service, service flow 1 must occupy a bandwidth of 10K, service flow 2 
must occupy a bandwidth of 20K, under the premise of ensuring voice service. 
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Router A Router B
s0 1.1.6.1
s0
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PC2
PC1 PC3
PC4
Tel ephone Tel ephone
 E1
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Figure 1-2 Networking diagram of CBQ configuration 
  Note: 
This example only illustrates configurations corresponding to CBQ. The configurations of various 
services and routes should be performed by the user independently. This example only configures CBQ 
on Router A. Router B can be configured similarly. 
Configure Router A: 
1   Configure ACL rule. 
[RouterA] acl 101  
[RouterA-acl-101] rule normal permit ip source 1.1.0.0 0.0.255.255 destination 
any 
[RouterA] acl 102 
[RouterA-acl-102] rule normal permit ip source 10.1.0.0 0.0.255.255 destination 
any 
2   Configure class 1: 
[RouterA] qos class logic-and 1 
[RouterA-qosclass-1] if-match acl 101 
[RouterA-qosclass-1] quit 
3   Configure class 2: 
[RouterA] qos class logic-and 2 
[RouterA-qosclass-2] if-match acl 102 
[RouterA-qosclass-2] quit 
4   Configure priority class: 
[RouterA] qos class logic-and voip  
3Com Router Configuration Guide Addendum for V1.20
15