Knowledge Base

This procedure introduces the use of additional IP addresses on the public network adapters of both the Primary and Secondary server for use during Split-Brain Avoidance configuration.

Note: The IP addresses shown below are for illustration purposes only. Use IP addresses that are appropriate to your network ensuring that the IP addresses selected are not in the same subnet as the Corporate (public) or Channel (private) subnet.

1. Add this IP address to the public network adapter on the Primary server: 11.0.0.1. This does not need to be the first IP address in the list.
2. Add this IP address to the public network adapter on the Secondary server: 11.0.0.2. This does not need to be the first IP address in the list.
3. Ping 11.0.0.1 and 11.0.0.2 in both directions.
4. Configure Split-Brain Avoidance to use 11.0.0.1 and 11.0.0.2 IP addresses:
   
   1. Open the VMware vCenter Server Heartbeat Console.
   2. Click Communication.
   3. Click the Split-Brain Avoidance Configuration tab.
   4. Enable Split-Brain Avoidance.
   5. Configure the Ping Interval and Timeout for Ping Echoes fields.
   6. Enter the appropriate newly assigned IP address for both the Primary and Secondary server.
   7. Click Apply.

Using this procedure removes the problem of having multiple IPs on the same subnet and also removes all of the DNS registration issues that can be seen as the addresses provided are outside of the client's normal subnet.