One of the classic yet not so commonly used features of ClusterXL is the ability to configure cluster IP addresses in a manner where physical IP addresses and VIPs are on different network subnets.
The advantage of this is that it:
- Enables a multi-machine cluster to replace a single-machine gateway in a pre-configured network, without the need to allocate new addresses to the cluster members.
- Makes it possible to use one routable address only, for the ClusterXL Gateway Cluster.
Article sk32073 explains the configuration, implications and limitations of this feature.
