ZyXEL Communications 650 Series Manuel D’Utilisation

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Prestige 650 Series User’s Guide 
20-2 
Bandwidth Management             
The total of the configured bandwidth budgets for child-classes cannot exceed the configured bandwidth 
budget speed of the parent class.  
20.3 Proportional Bandwidth Allocation 
Bandwidth management allows you to define how much bandwidth each class gets; however, the actual 
bandwidth allotted to each class decreases or increases in proportion to actual available bandwidth.  
20.4  Bandwidth Management Usage Examples 
These examples show bandwidth management allotments on a WAN interface that is configured for 
640Kbps. 
20.4.1 Application-based Bandwidth Management Example 
The bandwidth classes in the following example are based solely on application. Each bandwidth class 
(VoIP, Web, FTP, E-mail and Video) is allotted 128kbps. 
 
Figure 20-1 Application-based Bandwidth Management Example 
20.4.2 Subnet-based Bandwidth Management Example 
The following example uses bandwidth classes based solely on LAN subnets. Each bandwidth class (Subnet 
A and Subnet B) is allotted 320kbps.