Configuring the Discovery Protocol for a core group

The Discovery Protocol for a core group establishes network connectivity between a new core group member and the other members of that core group.

 

Before you begin

Understand the concepts that are described in Core group Discovery Protocol . Then determine how long you want the Discovery Protocol to wait before it recalculates the set of unconnected core group members and attempts to open connections to those members.

 

About this task

You might want to perform this task if you are trying to tune the discovery protocol behavior for a core group. The default value of 60 seconds, which is set during the WAS installation process, provides an acceptable process detection time for most situations.

To change wait interval for the Discovery Protocol:

 

Procedure

  1. In the administrative console, click Servers > Core groups > Core group settings > core_group_name.

  2. Under Additional Properties, click Custom Properties.

  3. Change the value that is specified for the IBM_CS_UNICAST_DISCOVERY_INTERVAL_SECS custom property.

    If the IBM_CS_UNICAST_DISCOVERY_INTERVAL_SECS property already exists, click on the property name and specify the new interval length, in seconds, in the Value field.

    If this property does not already exist, click New and create it:

    1. In the Name field, specify IBM_CS_UNICAST_DISCOVERY_INTERVAL_SECS.

    2. In the Value field specify the length of time, in seconds, you want the Discovery Protocol to wait before it recalculates the set of unconnected core group members and attempts to open connections to those members.

  4. Click OK, and then click Save to save your changes.

  5. Select Synchronize changes with nodes, and then click Save again.

  6. Restart all members of the core group.

 

Results

After the servers restart, the core group members all run with the new Discovery Protocol setting.



Related concepts
Core groups (high availability domains) Core group Discovery Protocol Related tasks
Setting up a high availability environment

 



 

 

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