ZyXEL ZyWALL 5 User Guide - Page 465
Bandwidth Management, Screens
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CHAPTER 25 Bandwidth Management Screens 25.1 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 ZyWALL forwards certain types of traffic, such as Voice-over-IP (VoIP), with minimum delay. 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 1024 kbps (or less) if the broadband device connected to the WAN port has an upstream speed of 1024 kbps. 25.1.1 What You Can Do in the Bandwidth Management Screens • Use the Summary screen (Section 25.2 on page 467) to enable bandwidth management on an interface and set the maximum allowed bandwidth for that interface. • Use the Class Setup screen (Section 25.3 on page 471) to view the configured bandwidth classes by individual interface and to set up a bandwidth class's name, bandwidth allotment, and bandwidth filter. • Use the Monitor screen (Section 25.6 on page 478) to view the device's bandwidth usage and allotments. 25.1.2 What You Need to Know About Bandwidth Management Bandwidth Classes and Filters Use bandwidth classes and sub-classes to allocate specific amounts of bandwidth capacity (bandwidth budgets). Configure a bandwidth filter to define a bandwidth class (or sub-class) based on a specific application and/or subnet. ZyWALL 5/35/70 Series User's Guide 465
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