The CA WA Agent can receive SNMP notifications CA WA Manager.  The agent can then forward them to the SNMP service.

How to setup the CA WA Agent to receive SNMP notifications from CA WA Manger or Scheduler?

CA WA DE 
CA WA Agent
OS Any

Enable the following parameters.  The 'management' plugin is needed to forward the SNMP traps to the SNMP service.
 

plugins.start_internal_6=management 
management.snmp.community=public 
management.snmp.host=<ip/hostname of SNMP service>
management.snmp.mibfile=<path to  CA WA Agent install>\cybermation.mib 
management.snmp.port=<SNMP service port>

E.g.

management.snmp.community=public 
management.snmp.host=10.10.90.99 
management.snmp.mibfile=C:\CA\WA_Agent\cybermation.mib 
management.snmp.port=162

For DE:  Make sure the Agent in the Topology has SNMP enabled set to true.

Note:  The plugin number for management must follows sequence accordingly.  Check agent_properties.log for all the plugins and sequence. 

plugins.start_internal_1=runner
plugins.start_internal_2=router
plugins.start_internal_3=filemon
plugins.start_internal_4=objmon
plugins.start_internal_5=filebrowser
plugins.start_internal_6=management

The number sequence must not break or have gap.  So, if you define management as plugins.start_internal_7 in the above example, the Agent will ignore the management plugin and will only load the first five.
See this documentation for more details.

For further debugging, set the following parameter in the agentparm and restart the Agent.  The parameter will create 'snmpconnector_provider.log' log with SNMP debug information

management.snmp.log.debug=true