Zyxel-communications P-660H-T Series Manual do Utilizador descarregar pdf (Página 187)

P-660H/HW-T Series User’ Guide

Chapter 16 Media Bandwidth Management Advanced Setup 186

16.6.2 Maximize Bandwidth Usage Example

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 91 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.

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Zyxel-communications P-660H-T Series Manual do Utilizador Página 187