Selecting Configuration->RCA Topology Manager in the UMP I get the following: "Error connecting to server. Please contact administrator". How can I get this portlet functioning properly? Second error: "The elements you requested don't exist, or the group is empty, or you lack sufficient permission to view them."
As a test we configured the SNMP service on the relay where the discovery_agent was deployed.
In Discovery manager (Remote admin portlet) we added one IP address for the local relay 10.194.23.60. Once we did that and restarted the discovery_agent, we could see that 1 of 4 nodes was discovered by SNMP as per the discovery_agent log at log level 3.
We then cold started the topology_agent.
Then once we checked the RCA/Topology portlet again the 'elements' error was gone and the machine was displayed (10.194.23.60) in the topology view. Issue resolved.