Symantec 5 manual 1depicts the flow of configuring VCS cluster in secure mode

30Preparing to install VCS

Preparing to configure the clusters in secure mode

■The system clocks of the root broker and authentication brokers must be in sync.

The installvcs program provides the following configuration modes:

Automatic mode	The root broker system must allow rsh or ssh passwordless login to
	use this mode.
Semi-automatic	This mode requires encrypted files (BLOB files) from the AT
mode	administrator to configure a cluster in secure mode.
	The nodes in the cluster must allow rsh or ssh passwordless login.
	See “Setting up inter-system communication” on page 44.
Manual mode	This mode requires root_hash file and the root broker information
	from the AT administrator to configure a cluster in secure mode.
	The nodes in the cluster must allow rsh or ssh passwordless login.
	See “Setting up inter-system communication” on page 44.

Figure 3-1depicts the flow of configuring VCS cluster in secure mode.