Make sure the MDM IP address appears in the gatwayUser.properties file, it not please the Mgmt IP of the Primary+Secondary (P.MDM_IP,S.MDM_IP) and restart the gateway service.
Hello experts  After enable snmp trap in scaleio gateway ,there are the following errors,could you help explain? 2015-11-11 16:55:29,674 [threadPoolTaskScheduler-1] INFO  c.e.s3g.scaleio.web.SNMP.TrapManager - New alerts: [Alert{affectedObject=System:4d2, severity=ALERT_MEDIUM, type=FAILED_CONNECT}] 2015-11-11 16:55:29,676 [threadPoolTaskScheduler-1] INFO  c.e.s3g.scaleio.web.SNMP.TrapSender - Sending V2 Trap: TRAP[requestID=0, errorStatus=Success(0), errorIndex=0, VBS[1.3.6.1.2.1.1.3.0 = Wed Nov 11 16:55:29 CST 2015; 1.3.6.1.6.3.1.1.4.1.0 = 1.3.6.1.4.1.1139.101.1; 1.3.6.1.4.1.1139.101.1.1 = 5; 1.3.6.1.4.1.1139.101.1.2 = MDM.MDM_Cluster.SNMP_Server_Cannot_Connect_To_MDM; 1.3.6.1.4.1.1139.101.1.3 = NA; 1.3.6.1.4.1.1139.101.1.4 = 2.1.3]] 2015-11-11 16:55:59,672 [threadPoolTaskScheduler-1] ERROR c.e.s.s.s.ConnectionServiceImpl - Failed connecting to cluster 2015-11-11 16:55:59,672 [threadPoolTaskScheduler-1] ERROR c.e.s3g.scaleio.web.SNMP.TrapManager - Failed connecting to mdm cluster: com.emc.s3g.scaleio.services.ScaleIORemoteRuntimeException: Failed connecting to cluster 2015-11-11 16:55:59,672 [threadPoolTaskScheduler-1] ERROR c.e.s.s.s.ConnectionServiceImpl - Failed connecting to cluster 2015-11-11 16:55:59,673 [threadPoolTaskScheduler-1] ERROR c.e.s3g.scaleio.web.SNMP.TrapManager - Could not retrieve failed devices: com.emc.s3g.scaleio.services.ScaleIORemoteRuntimeException: Failed connecting to cluster 2015-11-11 16:55:59,673 [threadPoolTaskScheduler-1] ERROR c.e.s.s.s.ConnectionServiceImpl - Failed connecting to cluster 2015-11-11 16:55:59,673 [threadPoolTaskScheduler-1] ERROR c.e.s3g.scaleio.web.SNMP.TrapManager - Could not retrieve disconnected sdss: com.emc.s3g.scaleio.services.ScaleIORemoteRuntimeException: Failed connecting to cluster
snmp trap error