Re: Debugging SNMP

I have checked and there is only once instance of my subagent running. It is running as a separate process using AgentX protocol. 


I have tried to manually register 3 hard coded scalars, one by one, each with its own handler: 
int returnValue1 = netsnmp_register_read_only_scalar( 
netsnmp_create_handler_registration("test1", 
handle_snmp, 
test1_oid, 
OID_LENGTH(test1_oid), 
HANDLER_CAN_RONLY 
)); 



int returnValue2 = netsnmp_register_read_only_scalar( 
netsnmp_create_handler_registration("test2", 
handle_snmp, 
test2_oid, 
OID_LENGTH(test2_oid), 
HANDLER_CAN_RONLY 
)); 

etc... 



This works fine and snmpget returns a value. However , if I put these 3 hard coded scalars OID in a list, iterate over that list and register them, I get a duplicate error. 

for (oid_iterator) { //Overlook pseudocode here 

const oid *oid_value = (*oid_iterator); 
const char *buffy = tmp_string.c_str(); 
int returnValue = netsnmp_register_read_only_scalar( 
netsnmp_create_handler_registration(buffy, 
handle_snmp, 
oid_value, 
OID_LENGTH(oid_value), 
HANDLER_CAN_RONLY 
)); 
} 





----- Original Message -----

Fra: "Jatin Bodarya" <[email protected]> 
Til: "Sverre Moe" <[email protected]> 
Sendt: 29. oktober 2012 09:59:23 
Emne: RE: Debugging SNMP 



I don’t know in your case, but one reason is because of execution of a subagent code multiple times. So when you run your subagent with “./XXX &” make sure that the previous execution has already been stopped. And if you have compiled the code with master agent, In that case you have to replace your “ libnetsnmpmibs.so.X... “ files... and then you have to execute it as subagent. 



From: Sverre Moe [mailto:[email protected]] 
Sent: 29 October 2012 13:57 
To: Dave Shield 
Cc: net-snmp-users 
Subject: Re: Debugging SNMP 


I have checked the contents of each elements inputted into 
int returnValue = netsnmp_register_read_only_scalar( 
netsnmp_create_handler_registration(buffy, 
handle_snmp, 
scalar_oid, 
OID_LENGTH(scalar_oid), 
HANDLER_CAN_RONLY 
)); 

For each iteration of the loop the OID and scalar name is unique. So why does it returns MIB_DUPLICATE_REGISTRATION? 


/Sverre 
----- Original Message -----


Fra: "Dave Shield" <[email protected]> 
Til: "Sverre Moe" <[email protected]> 
Kopi: "net-snmp-users" <[email protected]> 
Sendt: 26. oktober 2012 14:52:18 
Emne: Re: Debugging SNMP 

On 26 October 2012 13:29, Sverre Moe <[email protected]> wrote: 
> Full code of my scalar registration. Changed to register all scalars one by 
> one instead of in group. 
> 
> The oid_wrapper class is a wrapper around oid that contains an oid pointer 
> and the length of that oid. 

Try printing out the value of 'scalar_oid' (and 'scalar_length') 
each time round the loop. 
What is the registration call *actually* being invoked with? 
(as opposed to what you think it _should_ be invoked with) 

Dave 



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