How to Limit IP Movement in a Cluster

This task describes how to set the IP imbalance threshold for probe clusters to minimize IP movement in the cluster.

To set the imbalance threshold:

  1. Go to Administration > Infrastructure Settings Manager > General Settings > Maximum allowed cluster imbalance.

  2. Enter the imbalance threshold (in percentage).

    Default: 20% The cluster must distribute the IPs among its Probes so that they are balanced. That is, by default no Probe may have 20% more or less than the average number of IPs. If the number of IPs on any Probe deviates from this threshold, the cluster attempts to redistribute the IPs among its Probes.

    For an example, see Limiting IP Movement in a Cluster.

    Note If minimal IP movement is more critical than cluster imbalance, then minimize the IP movement by making this threshold higher. The higher the imbalance threshold, the less the IPs will be moved around.