Media Bandwidth Management Advanced Setup; Bandwidth Management Advanced Setup Overview; Bandwidth Classes And Filters - ZyXEL Communications Prestige 661H Series User Manual

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

19.1 Bandwidth Management Advanced Setup 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.
You can use the wizard setup screens to configure basic bandwidth management. Refer to
Chapter 4 on page 68

19.2 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 19.9 on page
bandwidth filter. You can configure up to one bandwidth filter per bandwidth class. You can
also configure bandwidth classes without bandwidth filters. However, it is recommended that
Chapter 19 Media Bandwidth Management Advanced Setup
C
Advanced Setup
for more information.
235) to set up a bandwidth class's name, bandwidth allotment, and
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