Hi Frank,
Thank you for your reply. Following your suggestion I implemented the method
shown below. It doesn't test broadcast yet. It is currently calling GET method
on an agent.
After sending async request (using snmp.send(pdu, target, null, listener);), I
think 'onResponse' method is never invoked.
I am not sure what am I missing. Could you please help?
Thanks!!
public static void testBroadcast() throws IOException {
Address targetAddress =
GenericAddress.parse("udp:172.17.77.112/161");
// Broadcast address:
// Address targetAddress = new UdpAddress("172.17.77.255/161");
TransportMapping transport;
try {
transport = new DefaultUdpTransportMapping();
transport.listen();
snmp = new Snmp(transport);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// setting up target
CommunityTarget target = new CommunityTarget();
target.setCommunity(new OctetString("public"));
target.setAddress(targetAddress);
target.setRetries(2);
target.setTimeout(5000);
target.setVersion(SnmpConstants.version1);
// creating PDU
PDU pdu = new PDU();
pdu.add(new VariableBinding(new OID(new int[] { 1, 3, 6, 1, 2,
1, 1, 1,
0 })));
pdu.add(new VariableBinding(new OID(new int[] { 1, 3, 6, 1, 2,
1, 1, 2,
0 })));
pdu.setType(PDU.GET);
System.out.println("Sending async request");
// send Async request
ResponseListener listener = new ResponseListener() {
public void onResponse(ResponseEvent resEvent) {
// Always cancel async request when response
has been received
// otherwise a memory leak is created! Not
canceling a request
// immediately can be useful when sending a
request to a
// broadcast
// address.
((Snmp)
resEvent.getSource()).cancel(resEvent.getRequest(),
this);
System.out.println("Received response PDU is: "
+ resEvent.getResponse());
}
};
snmp.send(pdu, target, null, listener);
}
Thanks,
Shraddha.
-----Original Message-----
From: SNMP4J [mailto:[email protected]] On Behalf Of Frank Fock
Sent: Friday, June 27, 2014 11:53 AM
To: [email protected]
Subject: Re: [SNMP4J] SNMP Agent discovery
Hi Shraddha,
Yes, of course. MIB Explorer is based on SNMP4J and its network discovery
engine is based on SNMP4J.
Use the asynchronous request interface in conjunction with the broadcast
address and use the cancel method by timeout (and not for each response as
usual).
Best regards,
Frank
Am 27.06.2014 19:21, schrieb Shraddha Herlekar:
> Hi,
>
> Is it possible to discover SNMP agents in a network using SNMP4J?
> I am looking for a functionality that any MIB browser provides for Network
> Discovery, which results into list of SNMP agents, IP Address, sysDescr
> ..etc, given a Subnet IP.
>
> TIA,
> Shraddha.
>
> _______________________________________________
> SNMP4J mailing list
> [email protected]
> https://oosnmp.net/mailman/listinfo/snmp4j
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