ZyXEL ADSL Prestige 2602R-61 VoIP 91-006-024004B Manual Do Utilizador

Prestige 2602R Series User’s Guide

Chapter 18 Media Bandwidth Management Advanced Setup

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Here is an example of a Prestige that has maximized bandwidth usage enabled on an interface. 
The first figure shows each bandwidth class’s bandwidth budget and priority. The classes are 
set up based on subnets. The interface is set to 10 Mbps. Each subnet is allocated 2 Mbps. The 
unbudgeted 2 Mbps allows traffic not defined in one of the bandwidth filters to go out when 
you do not select the maximize bandwidth option.

Figure 96   Bandwidth Allotment Example

The following figure shows the bandwidth usage with the maximize bandwidth usage option 
enabled. The Prestige divides up the unbudgeted 2 Mbps among the classes that require more 
bandwidth. If the administration department only uses 1 Mbps of the budgeted 2 Mbps, the 
Prestige also divides the remaining 1 Mbps among the classes that require more bandwidth. 
Therefore, the Prestige divides a total of 3 Mbps total of unbudgeted and unused bandwidth 
among the classes that require more bandwidth. 

In this case, suppose that all of the classes except for the administration class need more 
bandwidth.

• Each class gets up to its budgeted bandwidth. The administration class only uses 1 Mbps 

of its budgeted 2 Mbps. 

• Sales and Marketing are first to get extra bandwidth because they have the highest 

priority (6). If they each require 1.5 Mbps or more of extra bandwidth, the Prestige 
divides the total 3 Mbps total of unbudgeted and unused bandwidth equally between the 
sales and marketing departments (1.5 Mbps extra to each for a total of 3.5 Mbps for each) 
because they both have the highest priority level. 

• R&D requires more bandwidth but only gets its budgeted 2 Mbps because all of the 

unbudgeted and unused bandwidth goes to the higher priority sales and marketing 
classes. 

• The Prestige does not send any traffic that is not defined in the bandwidth filters because 

all of the unbudgeted bandwidth goes to the classes that need it.