Hi,
If you do not want to configure the USM of the trap receiver,
then the sender should send noAuthNoPriv v3 notifications.
Best regards,
Frank
Am 21.11.2012 20:20, schrieb Li, Hoiying:
> Hi,
>
> I implemented a simple snmp4j trap listener a while ago which has been
> receiving SNMPv1 and SNMPv2c traps without any issue. Recently I noticed that
> my trap listener is not receiving v3 traps. According to the following snmp4j
> documentation, to receive v3 traps, I have to add the highlighted code with
> the v3 USM configured. My system allows various v3 credentials to be
> configured on the agents and the v3 credentials are not naturally known to
> the trap listener. I'm wondering if snmp4j allows disabling v3 trap
> authentication in some way so that my current trap listener code can also
> receive v3 traps without having to configure USM?
>
> Example for Receiving SNMP Messages
> import org.snmp4j.*;
> import org.snmp4j.smi.*;
> import org.snmp4j.mp.SnmpConstants;
> ...
> TransportMapping transport =
> new DefaultUdpTransportMapping(new UdpAddress("0.0.0.0/161"));
> Snmp snmp = new Snmp(transport);
> if (version == SnmpConstants.version3) {
> byte[] localEngineID =
>
> ((MPv3)snmp.getMessageProcessingModel(MessageProcessingModel.MPv3)).createLocalEngineID();
> USM usm = new USM(SecurityProtocols.getInstance(),
> new OctetString(localEngineID), 0);
> SecurityModels.getInstance().addSecurityModel(usm);
> snmp.setLocalEngine(localEngineID, 0, 0);
> // Add the configured user to the USM
> ...
> }
> snmp.addCommandResponder(this);
> snmp.listen();
> ...
> public synchronized void processPdu(CommandResponderEvent e) {
> PDU command = e.getPdu();
> if (command != null) {
> ...
> }
> }
>
>
> Thanks,
> Hoiying
> _______________________________________________
> SNMP4J mailing list
> [email protected]
> http://lists.agentpp.org/mailman/listinfo/snmp4j
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