Hi,

To generate a trap, please refer the example bundled with the product under the directory given below.

<Product_Home>AdventNet/JavaAgent/examples/snmp/traps/simpletrap/agent/bin/

Hope it helps you.

Thanks,
Ramkumar

I guess I wasn't clear. The case I was interested in is that I have the Agent running. It is setup to receive and forward traps. Now, suppose that someone sends a trap to my agent. Rather than just forwarding the trap I want to intercept it and so something. Basically I want a callback when my agent receives a trap.

Thank you.

Brian

Perhaps I was unclear. We're not wanting to send a trap, we have an existing agent that receives and forwards traps from third party agents.

When those traps arrive at our agent we want a callback in our code to be called so that we can process that trap, i.e. rather than just act as a passthrough for traps we want to intercept and process the trap.

Thank you.

Brian Tarbox

Hi,

From your mail, we understood that the trap forwarded by the subAgent must be modified in the master agent as per your requirement and send to the manager. If our assumption is wrong, please correct us with the appropriate details.

To modify the traps send by the subAgent, the master agent waits in a callback thread waiting for the packet at the default port 8005. To modify the trap pdu, you can override the method callback of SnmpTrapReceiverService and process the trap pdu and send the pdu by calling the sendTrap method of SnmpTrapService.

The following shows the sample code snippet to override the callback method.

public class TrapService extends SnmpTrapReveiverService {
TrapService(int port){
super(port);
}

public boolean callback(SnmpSession session,
SnmpPDU pdu, int reqid){
...(process your pdu)
...(send the pdu)
return false;
}
public void addTrapRequestListener(TrapRequestListener trapListener)
{
this.trapListener = trapListener;
}

}

In the main file of the master agent, by default the SnmpTrapReceiverService is instantiated. please include the following line instead of SnmpTrapReceiverService.

TrapService trapservice = new TrapService(8005);
trapservice.addTrapRequestListener(trapListener);

Also to send a trap, please refer our example bundled with the product. For further reference, please refer the javadoc.

Hope we are clear.

Please do get back to us for further clarification.

Thanks,
Ramkumar

HI,

From the steps said in earlier mail, please make a note that the trap listening port of master agent should be defined in the trap forwarding table of subagent. The master agent listens for the trap at port 8005 by default.

Hope we are clear.

Please do get back to us clarification.

Thanks,
Ramkumar