User`s guide

LAN-Cell 2 User’s Guide
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CHAPTER 18
Bandwidth Management
Screens
18.1 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 LAN-Cell 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 1024 kbps (or less) if the
broadband device connected to the WAN port has an upstream speed of 1024 kbps.
18.1.1 What You Can Do in the Bandwidth Management Screens
• Use the Summary screen (Section 18.2 on page 354) to enable bandwidth management on
an interface and set the maximum allowed bandwidth for that interface.
• Use the Class Setup screen (Section 18.3 on page 356) to view the configured bandwidth
classes by individual interface and to to set up a bandwidth class’s name, bandwidth
allotment, and bandwidth filter.
•Use the Monitor screen (Section 18.4 on page 362) to view the device’s bandwidth usage
and allotments.