[SNMP4J] getting responseing snmp4j
Tayyab Akram
mail.tayyab at gmail.com
Tue Jul 15 15:14:19 CEST 2008
First thing about your code..... You are mixing up the things.... like you
wrote
target.setVersion(SnmpConstants.*version1*);
But the code you have written is for SnmpV3.... Like you have used USM and
you have created User and used MD5DES......etc...
So I think your code should give exception due to Message Processing
Model...
What you want to do??? I mean why you want to receive the response??? and
what you want to do with the response??
If you are using a Trap Listener that does not support SnmpV3 then of course
you can't send SnmpV3 messages to that Listener.
Regards,
--Muhammad Tayyab
On Tue, Jul 15, 2008 at 4:39 PM, Shweta <shweta_naik at persistent.co.in>
wrote:
> Its ok
>
> But tell wht shd I use INFORM is not suppoted then
>
> I tried this code also
>
>
>
> Address targetAddress = GenericAddress.*parse*("udp:localhost/162");
>
> TransportMapping transport;
>
> Snmp snmp = *null*;
>
> *try* {
>
> transport = *new* DefaultUdpTransportMapping();
>
>
>
> snmp = *new* Snmp(transport);
>
> USM usm = *new* USM(SecurityProtocols.*getInstance*(),
>
> *new* OctetString(MPv3.*
> createLocalEngineID*()), 0);
>
> SecurityModels.*getInstance*().addSecurityModel(usm);
>
> transport.listen();
>
> // add user to the USM
>
> snmp.getUSM().addUser(*new* OctetString("MD5DES"),
>
> *new* UsmUser(*new*OctetString(
> "MD5DES"),
>
> AuthMD5.*ID*,
>
> *new* OctetString(
> "MD5DESUserAuthPassword"),
>
> PrivDES.*ID*,
>
> *new* OctetString(
> "MD5DESUserPrivPassword")));
>
>
>
>
>
>
>
>
>
>
>
>
>
> // create the target
>
> //CommunityTarget target = new CommunityTarget();
>
> // target.setCommunity(new OctetString("public"));
>
> UserTarget target = *new* UserTarget();
>
> target.setAddress(targetAddress);
>
> target.setRetries(1);
>
> target.setTimeout(5000);
>
> target.setVersion(SnmpConstants.*version1*);
>
> target.setSecurityLevel(SecurityLevel.*AUTH_PRIV*);
>
> target.setSecurityName(*new* OctetString("MD5DES"));
>
>
>
> // create the PDU
>
> PDU pdu = *new* ScopedPDU();
>
>
>
> pdu.setType(PDU.*GETNEXT*);
>
> VariableBinding vb = *new* VariableBinding();
>
> vb.setOid(*new* OID(".1.3.6.1.2.1.1.1.0"));
>
> vb.setVariable(*new* OctetString("This is just test
> trap"));
>
> pdu.add(vb);
>
> //pdu.add(new VariableBinding(new
> OID("1.3.6.1.2.1.1.1.0")));
>
>
>
>
>
> System.*out*.println("next is............"+pdu);
>
> // send the PDU
>
> ResponseEvent response;
>
> //try {
>
> response = snmp.send(pdu, target,transport);
>
> PDU responsePDU = response.getResponse();
>
> // extract the address used by the agent to send the
> response:
>
> Address peerAddress = response.getPeerAddress();
>
> System.*out*.println("so peeraddress........"
> +response);
>
> snmp.close();
>
> //}
>
>
>
>
>
> But it gives me Message Exception….
>
> Waiting fro reply
>
>
>
> Thanks,
>
> Shweta Naik.
> ------------------------------
>
> *From:* Tayyab Akram [mailto:mail.tayyab at gmail.com]
> *Sent:* Tuesday, July 15, 2008 3:49 PM
> *To:* Shweta
> *Cc:* snmp4j at agentpp.org
> *Subject:* Re: [SNMP4J] getting responseing snmp4j
>
>
>
> Hi Shweta,
>
> [Sorry for duplicate reply. I forgot to add mailing list in CC in previous
> message]
>
> There is nothing wrong with your code except that you are expecting the
> response of a V1TRAP.
> SNMP Version-1 only supports TRAPs and these traps are not acknowledged. So
> when the Trap Listener receives your trap it will not send any response.
>
> If you want to use acknowledged traps where you get the response from the
> Trap Listener, then you have to use the Version-2c or Version-3 of SNMP.
> These are called INFORMS.
>
> Or in simple words INFORM is acknowledged TRAP and is not supported in SNMP
> Version-1.
>
> Regards,
> --Muhammad Tayyab
>
>
>
> On Tue, Jul 15, 2008 at 3:19 PM, Shweta <shweta_naik at persistent.co.in>
> wrote:
>
> HI all, I facing one problem tht getting response always null
>
> I tried following code, when I print response that shows me null but if I
> run this code & check in the runnig tool on my machin i.e in trap receiver
> I
> able to seen mag
>
> But I want to handle response programmatically but it showing me null
>
>
>
>
>
>
>
>
>
> Address targetAddress = GenericAddress.parse("udp:"
> + "localhost"
>
> + "/162");
>
> CommunityTarget target = new CommunityTarget();
>
> target.setCommunity(new OctetString("public"));
>
> target.setAddress(targetAddress);
>
> target.setRetries(1);
>
> target.setTimeout(2000);
>
> target.setVersion(SnmpConstants.version1);
>
> PDUv1 pdu1 = new PDUv1();
>
> pdu1.setGenericTrap(PDUv1.COLDSTART);
>
> pdu1.setSpecificTrap(Integer.parseInt(("0")));
>
> pdu1.setEnterprise(new org.snmp4j.smi.OID());
>
> //pdu1.setEnterprise(new OID(".1.3.6.1.2.1.1.1.0"));
>
> pdu1.setType(PDUv1.V1TRAP);
>
>
>
> VariableBinding vb = new VariableBinding();
>
> vb.setOid(new OID(".1.3.6.1.2.1.1.1.0"));
>
> vb.setVariable(new OctetString("This is just test
> trap"));
>
> pdu1.add(vb);
>
> //pdu1.addOID(new VariableBinding(new
> OID("1.3.6.1.2.1.1.1.0")));
>
> try {
>
> //IpAddress sourceIp = new
> IpAddress("10.77.200.82");
>
> IpAddress sourceIp = new
> IpAddress(InetAddress.getLocalHost());
>
> pdu1.setAgentAddress(sourceIp);
>
> //System.out.println("so PDU
> is......."+pdu1);
>
>
>
> DefaultUdpTransportMapping
> udpTransportMap = new DefaultUdpTransportMapping();
>
> udpTransportMap.listen();
>
> Snmp snmp = new Snmp(udpTransportMap);
>
> ResponseEvent response = snmp.send(pdu1,
> target,udpTransportMap);
>
>
>
>
>
> System.out.println("SnmpNotificationTrap
> : pdu1: " + pdu1);
>
> System.out.println("SnmpNotificationTrap
> : response: " + response.getSource());
>
> snmp.close();
>
>
>
>
>
> }
>
> catch (Exception e) {
>
> e.printStackTrace();
>
>
>
> }
>
>
>
>
>
> Thanks
>
> Shweta
>
>
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