ZyXEL 2WG ユーザーガイド
ZyWALL 2WG User’s Guide
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C
H A P T E R
21
Bandwidth Management
Screens
21.1 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 (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:
types of traffic. It can also help you make sure that the ZyWALL 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?
• 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.
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.
21.1.1 What You Can Do in the Bandwidth Management Screens
• Use the Summary screen (
) to enable bandwidth management on
an interface and set the maximum allowed bandwidth for that interface.
• Use the Class Setup screen (
) to view the configured bandwidth
classes by individual interface and to to set up a bandwidth class’s name, bandwidth
allotment, and bandwidth filter.
allotment, and bandwidth filter.
• Use the Monitor screen (
) to view the device’s bandwidth usage
and allotments.
21.1.2 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.
(bandwidth budgets). Configure a bandwidth filter to define a bandwidth class (or sub-class)
based on a specific application and/or subnet.