SNMP v3 Trap listener not working for AuthNoPriv both MD5 and SHA

[kaushikakshay359]

@AGENTPP On the side note, can you please help on below

@AGENTPP

When sending INFORMs from the agent to the SNMP4J manager (notification receiver), then the SNMP4J notification receiver is authoritative. Thus, the agent (command responder) needs to use the engine ID of the manager (notification receiver) to send the SNMPv3 INFORM request.
In this case, is it absolutely necessary that you add the USM user the agent is using as localised user with the engineID of the agent to the SNMP4J manager!
Otherwise the manager will not be able to handle the INFORM request.

I am setting the Constant Engine id in USM() as below

        // add usm object
		SecurityProtocols securityProtocols = SecurityProtocols.getInstance();
		OctetString ConstantEngineId = OctetString.fromHexStringPairs("ConstantEngineID made with enterprise id and all in format 80xxxx");
		USM usm = new USM(securityProtocols, ConstantEngineId, 0);
		SecurityModels.getInstance().addSecurityModel(usm);

		// Add needed security protocols - we can add all in one go as well, will explore later.
		securityProtocols.addAuthenticationProtocol(new AuthMD5());
		securityProtocols.addAuthenticationProtocol(new AuthSHA());
		securityProtocols.addPrivacyProtocol(new PrivDES());
		securityProtocols.addPrivacyProtocol(new Priv3DES());
		securityProtocols.addPrivacyProtocol(new PrivAES128());

And added USM user for noAuthPriv like below

	    // NoAuthPriv
		OctetString engineId = OctetString.fromHexStringPairs("Agent's engine id");
		UsmUser noAuthPrivUser = new UsmUser(securityName, null, null,
				null, null);
		noAuthPrivUser = noAuthPrivUser.localizeUser(engineId, null, null, securityProtocols);
		snmp.getUSM().addUser(noAuthPrivUser);

But When Inform is received I am getting unknown engine id: ‘’" error (1410)