Discovery Preferences window: HMC page

You can use Discovery Preferences to specify discovery parameters for Hardware Management Console (HMC).

Fields

Predefined directory agent servers
Add
Allows you to specify a server that is a Service Location Protocol (SLP) directory agent to assist the management server in discovering Hardware Management Consoles (HMCs).
Remove
Deletes the selected directory agent from the list of Predefined directory agent servers.
SLP Scope
Add
Allows you to define an SLP scope in which to discover HMCs. You can use scopes to group services. There is a standard SLP scope called "default".
Remove
Deletes the selected item from the SLP scope list.
Discovery
Maximum wait time in seconds:
Specifies the number of seconds a discovery will wait to find new systems before timing out.
Use broadcast
When this check box is selected, IBM Director issues a general IP broadcast to discover service agents. If a directory agent is provided, then this option is ignored. Some sites might not use a general IP broadcast to discover systems. If your site does not permit general broadcasts, clear this check box.
Use multicast
When this check box is selected, IBM Director issues an IP multicast in an attempt to discover service agents. If a directory agent is provided, then this option is ignored. Multicasting can have the advantage of being able to discover systems across multiple subnets without requiring specific configuration data for each subnet. Multicast is the preferred discovery and is used by default. Not all network configurations allow multicast.
HMC
Auto-discover period (hours)
The frequency with which IBM Director Server attempts to automatically discover other IBM Director systems for management. This feature can be disabled (the default value) or set to a period of 1 - 168 hours (7 days).
Presence Check Period (minutes)
The frequency with which IBM Director Server checks the status of each IBM Director system it can manage. The presence check period determines how quickly the IBM Director Server detects that a system has gone offline (due to a problem, or being shutdown), or has come online. The automatic presence check can be disabled, or set to repeat every 1 - 240 minutes (4 hours). The default setting is 15 minutes.

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