Hi,
I would recommend using the
http://www.snmp4j.org/doc/org/snmp4j/Snmp.html#addNotificationListener(org.snmp4j.smi.Address,
org.snmp4j.CommandResponder)
hook to receive notifications and inform requests.
The snmp class will then send the response for you.
The UDP checksum error can be ignored.
The code below is buggy and should not be used.
Best regards,
Frank
Tayyab Akram wrote:
Hi all,
I need some help,
I have implemented trap receiver using Snmp4j and now I am sending SnmpV3
INFORM using net-snmp tool "*snmpinform*"
I have implemented the *processPdu()* function to response the INFORM
messages as told by Jeff.
Still *snmpinform* fails due to bad response, Below is the output of the
snmpinform command,
[EMAIL PROTECTED] *snmpinform -v 3 -u wes localhost ''
SNMPv2-MIB::sysLocation.0*
*snmpinform: Timeout (plaintext scopedPDU header type A6: s/b 30)*
Can anybody tell me what's wrong???
I used WireShark paket sniffer to see the packets which shows,
*snmpinform* sent 5 INFORMS (retries).... Against every INFORM my Trap
Receiver sent response but Packet Sniffer shows that the response packets
have *WRONG UDP CHECKSUM*.
Can anybody give some hint about what could be wrong???
Why my code is sending Bad response?? Below is the implementation of my *
processPdu()* function,
public void processPdu(CommandResponderEvent crEvent) {
crEvent.setProcessed(true);
PDU trapPDU = new PDU(crEvent.getPDU());
if(trapPDU != null) {
if(trapPDU.getType() == PDU.INFORM) {
*PDU responsePDU = new PDU(trapPDU);*
responsePDU.setErrorIndex(0);
responsePDU.setErrorStatus(0);
responsePDU.setType(PDU.RESPONSE);
StatusInformation statusInfo = new StatusInformation();
StateReference stateRef = crEvent.getStateReference();
try {
*crEvent.getMessageDispatcher().returnResponsePdu(
crEvent.getMessageProcessingModel(),
crEvent.getSecurityModel(),
crEvent.getSecurityName(),
crEvent.getSecurityLevel(),
trapPDU,
crEvent.getMaxSizeResponsePDU(),
stateRef,
statusInfo);*
} catch (MessageException msgEx) {
Logger.error(msgEx);
}
}
}
Thanks in advance,
--Tayyab
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