ZyXEL Communications P-660W-T1 v2, User Manual

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Chapter 16 Media Bandwidth Management Advanced Setup
P-660W-Tx v2 User’s Guide
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Enable bandwidth borrowing on a child-class to allow the child-class to use its parent class’s
unused bandwidth. A parent class’s unused bandwidth is given to the highest-priority child-
class that has bandwidth borrowing configured, first.
The total of the bandwidth allotments for child-classes cannot exceed the bandwidth allotment
of their parent class. The ZyXEL Device uses the scheduler to divide a parent class’s unused
bandwidth among the child-classes.
16.2.1 What You Can Do in the Media Bandwidth Management Screens
• Use the main Media Bandwidth Management screen ( Section 16.3 on page 159 ) to enter
the Summary , Class Setup , or Monitor screens.
• Use the Summary screen ( Section 16.4 on page 160 ) to enable and configure bandwidth
on the interfaces.
• Use the Class Setup screen ( Section 16.5 on page 163 ) to configure bandwidth classes.
• Use the Monitor screen ( Section 16.6 on page 167 ) to view bandwidth usage information.
16.2.2 Bandwidth Management Usage Examples
These examples show bandwidth management allotments on a WAN interface that is
configured for 640Kbps.
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 84 Application-based Bandwidth Management Example
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.