What Is The 3-Dns Controller - Dell 3-DNS Administrator's Manual

Dell 3-dns administrator guide version 4.5
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Identifying command syntax

What is the 3-DNS Controller?

®
3-DNS
Administrator Guide
We show actual, complete commands in bold Courier text. Note that we do
not include the corresponding screen prompt, unless the command is shown
in a figure that depicts an entire command line screen. For example, the
following command sets the 3-DNS Controller load balancing mode to
Round Robin:
lb_mode rr
Table 1.1 explains additional special conventions used in command line
syntax.
Item in text
Description
\
Continue to the next line without typing a line break.
<
>
You enter text for the enclosed item. For example, if the command
has <your name>, type in your name.
|
Separates parts of a command.
[
]
Syntax inside the brackets is optional.
...
Indicates that you can type a series of items.
Table 1.1 Command line conventions used in this manual
A 3-DNS Controller is a network appliance that monitors the availability
and performance of global resources, and uses that information to manage
network traffic patterns. The 3-DNS Controller uses load balancing
algorithms, topology-based routing, and production rules to control and
distribute traffic according to specific policies. The system is highly
configurable, and its web-based and command line configuration utilities
allow for easy system setup and monitoring.
The 3-DNS Controller provides a variety of features that meet special needs.
For example, with this product you can:
• Configure a content delivery network with a CDN provider
• Guarantee multiple port availability for e-commerce sites
• Ensure wide-area persistence by maintaining a mapping between an local
DNS server and a virtual server in a wide IP pool
• Direct local clients to local servers for globally-distributed sites using
Topology load balancing
• Change the load balancing configuration according to current traffic
patterns or time of day
• Customize load balancing modes
Introduction
1 - 5

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