P-660H/HW/W-T Series User’ Guide

CHAPTER 16

Media Bandwidth Management

Advanced Setup

This chapter describes bandwidth management with one level of child class.

16.1 Media Bandwidth Management Overview

Bandwidth management allows you to allocate an interface’s outgoing capacity to specific types of traffic. It can also help you make sure that the Prestige forwards certain types of traffic (especially real-time applications) with minimum delay. With the use of real-time applications such as Voice-over-IP (VoIP) increasing, the requirement for bandwidth allocation is also increasing.

Bandwidth management addresses questions such as:

•Who gets how much access to specific applications?

•What priority level should you give to each type of traffic?

•Which traffic must have guaranteed delivery?

•How much bandwidth should be allotted to guarantee delivery?

Bandwidth management also allows you to configure the allowed output for an interface to match what the network can handle. This helps reduce delays and dropped packets at the next routing device. For example, you can set the WAN interface speed to 1000kbps if the ADSL connection has an upstream speed of 1Mbps. All configuration screens display measurements in kbps (kilobits per second), but this User’s Guide also uses Mbps (megabits per second) for brevity’s sake.

Refer to Section 16.9 on page 188 to enable and configure bandwidth on the interfaces.

Refer to Section 16.10 on page 190 to configure bandwidth classes.

Refer to Section 16.11 on page 194 to view bandwidth usage information.

16.2 Bandwidth Classes and Filters

Use bandwidth classes and child-classes to allocate specific amounts of bandwidth capacity (bandwidth budgets). Configure a bandwidth filter to define a bandwidth class (or child-class) based on a specific application and/or subnet. Use the Class Configuration screen (see Section 16.10 on page 190) to set up a bandwidth class’s name, bandwidth allotment, and

Chapter 16 Media Bandwidth Management Advanced Setup

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