About this task
Step 4 towards the goal:
Configuring LTPA and working with keys
Procedure
You can specify the shared keys and configure the authentication
mechanism that is used to exchange information between servers to
import and export LTPA keys across multiple WebSphere® Application
Server cells. You must start the server again for any changes
you make to become active.
Read the Managing LTPA keys from multiple WebSphere Application Server
cells article for more information.