Can I use a TransportMapping with two Snmp instances?

Although it is recommended to use only a single Snmp instance with one or more TransportMappings, you can also use a single TransportMapping instance with more than one Snmp instance. 

You probably need to implement your own MessageDispatcher then, to properly dispatch incoming messages to avoid timeouts because a response is processed by a different Snmp instance than the instance that sent the corresponding request. 

When using the DefaultUdpTransportMapping you also need to call

before 

or 

To avoid parallel access to the transport mappings message buffer.