ZyXEL Communications P-660H-T Series - Manual (Page 184)

P-660H/HW-T Series User’ Guide
183 Chapter 16 Media Bandwidth Management Advanced Setup
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
Prestige 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 screen (see
Section 16.10 on page 190 for details).
The total of the configured bandwidth budgets for child-classes cannot exceed the configured
bandwidth budget speed of the parent class.
16.3 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.
16.4 Bandwidth Management Usage Examples
These examples show bandwidth management allotments on a WAN interface that is
configured for 640Kbps.
16.4.1 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 88 Application-based Bandwidth Management Example
16.4.2 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.