After you have configured the SAP Web dispatcher with your Sun Cluster HA for SAP, perform the following steps.
The SAP Web dispatcher has the capability of auto restart. If the SAP Web dispatcher goes down, the SAP Web dispatcher watch dog process will restart. Currently, there is no Sun Cluster agent available for the SAP Web dispatcher.
Ensure that SAP Web dispatcher has an instance number different than the Central Instance and the application server instances.
For example, SAPSYSTEM = 66 is used in the profile for the SAP Web dispatcher.
Activate the Internet Communication Frame Services manually after you install the SAP Web Application Server.
See SAP OSS note 517484 for more details.