ZyXEL Communications ZyXEL ZyAIR 100 - Manual (Page 266)

ZyWALL 10~100 Series Internet Security Gateway
18-2 Bandwidth Management Screens
application and/or subnet. Use the Class Configuration tab (see section 18.9.1) to set up a bandwidth
class’s name, bandwidth allotment, and bandwidth filter. You can configure up to one bandwidth filter per
bandwidth class. You can also configure bandwidth classes without bandwidth filters. However, it is
recommended that you configure child-classes with filters for any classes that you configure without filters.
The ZyWALL leaves the bandwidth budget allocated and unused for a class that does not have a filter itself
or child-classes with filters. View your configured bandwidth classes and child-classes in the Class Setup
tab (see section 18.9 for details).
The total of the configured bandwidth budgets for child-classes cannot exceed the configured bandwidth
budget speed of the parent class.
18.3 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.
18.4 Bandwidth Management Usage Examples
These examples show bandwidth management allotments on a WAN interface that is configured for
10Mbps.
18.4.1 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 2 Mbps.