Rockwell Automation 1757-SWKIT5000 ProcessLogix R500.1 Installation and Upgrade Guide - Manual (Page 158)

Publication 1757-IN500A-EN-P - September 2002
6-2 Additional Redundant Server Procedures
Changing Hosts File Entries
Use the following procedure to map computer names to respective unique IP
addresses on both Servers.
1. Use Notepad to view the Hosts file in the directory location:
C:\WINNT\SYSTEM32\DRIVERS\ETC.
2. You must enter the desired computer names and respective unique IP
addresses for both Primary and Secondary Servers on a separate line for
each Server and Client as shown in the display above.
These names and addresses must be included in the Hosts file and
resident on each Server.
ATTENTION
!
To support redundant Servers (Primary/Secondary), you
must identify all computer names and respective unique IP
addresses in the Hosts file and be sure they are resident on
each ProcessLogix Client.
Use the DOS command >IPCONFIG/ALL<, or access
TCP/IP Properties through the General tab in the Local
Area Connection Properties dialog box to obtain IP
addresses for all configured components.