Marek,
No, you do not need to (must not) register the parent OID.
It hink the error is most likely in the MOCreate.createReadOnly method.
For scalars, you have to append a ".0", because that identifies the
instance.
Sclarars alwasy register under their parent OID, because otherwise,
someone will be able to register a second scalar instance under the same
OID but with different index...
Best regards,
Frank
Am 01.04.2013 11:55, schrieb Marek Hajduczenia:
Frank,
I tried already different OIDs, thinking that this particular one might be
indeed used on the system. I switched to a different OID, which is still
within the experimental range, but should be unused (1.3.6.1.3.1122 - found
no record online of it being used)
OID oidLocalHostName = new
OID("1.3.6.1.3.1122.1.1"); // nomeServidor
OID oidRootFolder = new OID("1.3.6.1.3.1122.1.2");
// diretoriaBase
OID oidDefaultPlayer = new
OID("1.3.6.1.3.1122.1.3"); // musicPlayer
OID oidNumberOfMusicFiles = new
OID("1.3.6.1.3.1122.1.4"); // nTotalmMsicasDisp
And then tried to create the objects
server.registerManagedObject(MOCreator.createReadOnly(oidLocalHostName,
java.net.InetAddress.getLocalHost().getHostName()));
server.registerManagedObject(MOCreator.createReadOnly(oidDefaultPlayer,
"VLC"));
server.registerManagedObject(MOCreator.createReadOnly(oidRootFolder,
folder.getAbsolutePath()));
getting the duplicate error on the second line.
Perhaps it is a lame question, but do I need to register 1.3.6.1.3.1122.1
somehow before? I just noticed that I am not really doing that anywhere ...
Marek
-----Original Message-----
From: Frank Fock [mailto:[email protected]]
Sent: Monday, 01 April, 2013 10:47 AM
To: Marek Hajduczenia
Cc: [email protected]
Subject: Re: [SNMP4J] Registering multiple managed objects and
org.snmp4j.agent.DuplicateRegistrationException error
Hi Marek,
Ok, the experimental sub-tree is indeed something different.
Nevertheless, the DuplicateRegistrationException only occurs,
if another ManagedObject have bee registered for this OID
or any prefix OID of that OID. Somehow, the OID 1.3.6.1.3.22.1
has been already registered.
Best regards,
Frank
Am 01.04.2013 11:35, schrieb Marek Hajduczenia:
Frank,
There cannot be clash within my own agent. I specifically use the
experimental branch (1.3.6.1.3) which does not require any formal
registration as long as it is for testing purposes only. In either case, I
tried different root locations and the net result is the same -
DuplicateRegistrationException.
The funny thing is that I can create a table at 1.3.6.1.3.22.2 with no
problems. It is just the 1.3.6.1.3.22.1 and subbranches that generate this
kind of problem.
Is there any example piece of code that show how to properly register a
number of scalar values? I need the following 4 objects to be created:
OID oidLocalHostName = new OID("1.3.6.1.3.22.1.1");
// nomeServidor
OID oidRootFolder = new OID("1.3.6.1.3.22.1.2"); //
diretoriaBase
OID oidDefaultPlayer = new OID("1.3.6.1.3.22.1.3");
// musicPlayer
OID oidNumberOfMusicFiles = new
OID("1.3.6.1.3.22.1.4"); // nTotalmMsicasDisp
Marek
-----Original Message-----
From: Frank Fock [mailto:[email protected]]
Sent: Sunday, 31 March, 2013 11:28 AM
To: Marek Hajduczenia
Cc: [email protected]
Subject: Re: [SNMP4J] Registering multiple managed objects and
org.snmp4j.agent.DuplicateRegistrationException error
Hi Marek,
The registration clash occurs in your own agent program.
You have to acquire your own root OID at the IETF.
It is called "enterprise registration number".
The root OID of your enterprise is the prefix of each OID you use. For
AGENT++ it is 1.3.6.1.4.1.4976
Best regards,
Frank
Am 30.03.2013 17:52, schrieb Marek Hajduczenia:
Hi Frank,
Thank you for the quick answer.
I removed the "dots" from the OID numbers, but the problem still
remains. I did not find any standard MIBs that have OID 1.3.6.1.3.22.1
so I am not quite sure why there would be a clash here. This is the
first time I register the OIDs in my agent and there are no other
agents running on my machine that could use this particular OID value.
Also, I'd very much appreciate if you could point me to any code that
provides the definition of my own OID root. I could not find that in
the sample agent code.
Thank you in advance
Marek
-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Frank Fock
Sent: Saturday, 30 March, 2013 2:37 PM
To: [email protected]
Subject: Re: [SNMP4J] Registering multiple managed objects and
org.snmp4j.agent.DuplicateRegistrationException error
Hi,
First, OIDs start with a number, not a dot.
Second, you need to register your own OID root. You must not define
any OIDs in subtrees of other vendors or standard MIB modules.
In your case, your OIDs clash with other OIDs in the agent -> that's
why a DuplicateRegistrationException is being thrown.
Best regards,
Frank
Am 30.03.2013 14:35, schrieb Marek Hajduczenia:
Dear colleagues,
I am continuing the development of my project and now I have a rather
simple task that keeps on generating errors for some reason I do not
quite understand. But let me first describe what I am doing and what
the output
is:
[1] I create 4 individual OID to be used later on
OID oidLocalHostName = new OID(".1.3.6.1.3.22.1.1"); // nomeServidor
OID oidRootFolder = new OID(".1.3.6.1.3.22.1.2"); // diretoriaBase
OID oidDefaultPlayer = new OID(".1.3.6.1.3.22.1.3"); // musicPlayer
OID oidNumberOfMusicFiles = new OID(".1.3.6.1.3.22.1.4"); //
nTotalmMsicasDisp
[2] then I try to register individual new managed objects as follows
server.registerManagedObject(MOCreator.createReadOnly(oidLocalHostNam
e , java.net.InetAddress.getLocalHost().getHostName()));
server.registerManagedObject(MOCreator.createReadOnly(oidDefaultPlaye
r , "VLC")); // HERE IS THE LINE WITH ERROR
server.registerManagedObject(MOCreator.createReadOnly(oidRootFolder,
folder.getAbsolutePath()));
server.registerManagedObject(MOCreator.createReadOnly(oidNumberOfMusi
c
Files,
0));
the function registerManagedObject is just a simple wrapper defined
as
follows:
public void registerManagedObject(ManagedObject mo)
{
try
{
server.register(mo, null);
}
catch (DuplicateRegistrationException ex)
{
throw new RuntimeException(ex);
}
}
I get however the following error on console:
208 [main] INFO org.snmp4j.agent.DefaultMOServer - Registered MO
org.snmp4j.agent.mo.MOScalar[oid=1.3.6.1.3.22.1.1,access=org.snmp4j.a
g ent.mo .MOAccessImpl@3ce3e8f3,value=Marek-HP,volatile=false] in
default context with scope
org.snmp4j.agent.mo.MOScalar[oid=1.3.6.1.3.22.1.1,access=org.snmp4j.a
g ent.mo .MOAccessImpl@3ce3e8f3,value=Marek-HP,volatile=false]
Exception in thread "main" java.lang.RuntimeException:
org.snmp4j.agent.DuplicateRegistrationException:
org.snmp4j.agent.DefaultMOContextScope[context=null,lowerBound=1.3.6.1.3.22.
1,lowerIncluded=true,upperBound=1.3.6.1.3.22.2,upperIncluded=false]
at
org.snmpagent.snmpAgentServer.registerManagedObject(snmpAgentServer.j
a
va:177
)
at
org.snmpagent.snmpAgentClientMain.main(snmpAgentClientMain.java:160)
Caused by: org.snmp4j.agent.DuplicateRegistrationException:
org.snmp4j.agent.DefaultMOContextScope[context=null,lowerBound=1.3.6.1.3.22.
1,lowerIncluded=true,upperBound=1.3.6.1.3.22.2,upperIncluded=false]
at
org.snmp4j.agent.DefaultMOServer.register(DefaultMOServer.java:279)
at
org.snmpagent.snmpAgentServer.registerManagedObject(snmpAgentServer.j
a
va:173
)
... 1 more
With the information that the content was registered at OID of
1.3.6.1.3.22.1.1 (oidLocalHostName) with the default context (null).
The attempt to perform registration for OID of 1.3.6.1.3.22.2 causes
the org.snmp4j.agent.DuplicateRegistrationException for some reason.
I looked through the documentation associated with this error, but
cannot still locate what the problem is. Any hints?
Also, is there a better / cleaner way to create a number of OIDs with
specific values? I looked through the examples in the SampleAgent
class, but there is no clear example of how that could be done.
Thanks for any help
Marek
_______________________________________________
SNMP4J mailing list
[email protected]
http://lists.agentpp.org/mailman/listinfo/snmp4j
--
---
AGENT++
Maximilian-Kolbe-Str. 10
73257 Koengen, Germany
https://agentpp.com
Phone: +49 7024 8688230
Fax: +49 7024 8688231
_______________________________________________
SNMP4J mailing list
[email protected]
http://lists.agentpp.org/mailman/listinfo/snmp4j
--
---
AGENT++
Maximilian-Kolbe-Str. 10
73257 Koengen, Germany
https://agentpp.com
Phone: +49 7024 8688230
Fax: +49 7024 8688231
--
---
AGENT++
Maximilian-Kolbe-Str. 10
73257 Koengen, Germany
https://agentpp.com
Phone: +49 7024 8688230
Fax: +49 7024 8688231
_______________________________________________
SNMP4J mailing list
[email protected]
http://lists.agentpp.org/mailman/listinfo/snmp4j
