ZyXEL Communications 650 Series Manuel D’Utilisation
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.
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.
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.
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.
(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.
A and Subnet B) is allotted 320kbps.