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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

transport.setAsyncMsgProcessingSupported(true);

before

transport.listen();

or

snmp.listen();

To avoid parallel access to the transport mappings message buffer.