To create multiple instances of a gateway, see Chapter 4, Installing and Configuring a Gateway With Portal Server, in Sun Java System Portal Server 7.2 Installation and Configuration Guide
Multi-homed gateway instances are multiple gateways on one Portal Server. To create these instances, modify the platform.conf file as follows:
gatewaybindipaddress = 0.0.0.0
If you are creating multiple gateway instances that use the same LDAP, after creating the first Gateway on all subsequent Gateways:
In /etc/opt/SUNWam/config/, modify the following areas in AMConfig-instance-name.properties to be consistent with the first installed instance of the Gateway.