All API Gateways in a cluster must be configured with the same multicast address. This is good design, and a requirement for the API Gateway to start up successfully. The API Gateway checks for this at startup.
If gateway nodes in a particular cluster do not have the same multicast address they will not start up successfully and may contain the following line in the ssg_0_0.log file:
2014-10-10T15:24:07.141-0400 SEVERE 1 com.l7tech.server.cluster.ClusterBootProcess: At least two nodes in database have different multicast addresses com.l7tech.server.LifecycleException: At least two nodes in database have different multicast addresses
The following instructions listed below should be followed in order to troubleshoot and resolve the issue noted above. Once resolved, the API Gateway should start up as expected. If it does not start up as expected after following the instructions below, then a Support case should be opened up for further assistance.