Table of Contents
3-DNS® Administrator Guide vii
1
Introduction
IMPORTANT HARDWARE INFORMATION .................................................. .......... 1-1
Getting started ........................................................................ ......................................... 1-1
Choosing a configuration tool ................................................................................ 1-2
Browser support ...................................................................................................... 1-3
Using the Administrator Kit .............. ............................................................................. 1-3
\Stylistic conventions ................................................... ........................................... 1-4
What is the 3-DNS Controller? ................................................................................. ...... 1-5
Internet protocol and network management support .............................................. 1-6
Security features ............. ........................................................................................ 1-6
Configuration scalability ....................................................................................... .1 -6
System synchronization options .................. ........................................................... 1-7
Configuring data collection for server status and network path data ...... ............... 1-7
Redundant system configurations ........................................................................... 1-8
What’s new in version 4.5 ............................ .................................................................. 1-9
Automatic discovery .................................................... ........................................... 1-9
Easy system account and password creation ...... .................................................... 1-9
Enhanced synchronization ...................................... ................................................ 1-9
Expanded statistics ............................................................................... ................. 1-10
Multi-homing and firewall support .......................................................................1-10
Security enhancements .............. ........................................................................... 1-10
Finding help and technical support resources ...............................................................1-11
2
Planning the 3-DNS Configuration
Managing traffic on a global network ............................................................................. 2-1
Understanding a basic 3-DNS configuration ......................................... ................. 2-1
Synchronizing configurations and broadcasting performance metrics ................... 2-2
Using a 3-DNS Controller as a standard DNS server ............................................. 2-3
Load balancing connections across the network .................................................... 2-4
Working with 3-DNS Controllers and other products ............................................2-4
Planning issues for the network setup ............................................................................ 2-6
Configuring the base network ................................................................................ .2-6
Defining data centers and servers ...................................... ..................................... 2-7
Planning a sync group ........................................................................ ..................... 2-7
Setting up communications on a 3-DNS Controller ........................ ....................... 2-8
Choosing the 3-DNS mode ............................................... ............................................ 2-10
Running a 3-DNS Controller in node mode .........................................................2-10
Running a 3-DNS Controller in bridge mode or router mode .............................. 2-11
Planning issues for the load balancing configuration ........................... ........................ 2-12
Using advanced traffic control features ................................. ....................................... 2-12
3
Using the Setup Utility
Creating the initial software configuration with the Setup utility .. ................................ 3-1
Connecting to the 3-DNS Controller for the first time ..................... .............................. 3-2
Running the utility from the console or serial terminal .......................................... 3-2
Running the Setup utility remotely .........................................................................3-2
Using the Setup utility for the first time ................ ......................................................... 3-5
Keyboard type .................................................................... ..................................... 3-5
Root password ......... ......................................................................................... ...... 3-5
Host name .................................. ............................................................................. 3-6
Redundant system settings ...................................................................................... 3-6