Re: Net-SNMP 5.5 on Windows Server 2008 with own subagent, can"t set scalar

[Julian C. <Ce...@fe...>]

>>>Try doing an "snmpget" request for one OID within your private enterprise.

>>>What does the agent display?   (i.e. the debug output with the packet dumps)



>> I tried "snmpget" on a OID from my private enterprise. At the first time I get

>> "Timeout: no Response from localhost"

>> When I try it a second time I get

>> "FERRARI-ELECTRONIC-MIB::Productname = No Such Object available on this agent at this OID"



>You don't specify the exact "snmpget" command that you ran.

>But it looks suspiciously as if you forgot the instance subidentifier.

>Remember that you need to ask for



>    snmpget ....   FERRARI-ELECTRONIC-MIB::Productname.0



>when retrieving a scalar object.



Oh you're right, thanks for commemorate me of the subidentifier.



>But that's not the main problem here.





>> Here the output from the agent from start to the second "snmpget" call:



>    [snip]



>Judging by that output, the GET requests is passed on to the subagent,

>but nothing is ever received back.   It's almost as if the subagent has crashed.



>(It might be easier to follow if you give the original request using otpions

>such as '-r 0 -t 60'.   That would avoid resending the GET request, and

> allow a bit more time for the subagent to respond)



I tried a GET request like that: "snmpget.exe -v 2c -r 0 -m all -t 60 -c public localhost .1.3.6.1.4.1.17524.1.1.0"

Output:

"Error in packet

Reason: (genError) A general failure occured

Failed object: FERRARI-ELECTRONIC-MIB::Productname.0"



The Master send the request only once but he resend it 5 times with a delay under a second.


In my Subagent I call sometimes the routine "Sleep()" but only with a value of between 2 and 5 (Milliseconds).
So this should not be the reason !?




>> I have debug code in my MIB handler but there is nothing like an error.



>What debug code do you have in this routine?

>What is displayed when the GET request gets passed over?

I've get only debug code at these routines:



netsnmp_ds_set_string()

init_agent()



Both return zero.



I've included these SNMP headers:



net-snmp-config.h

net-snmp-includes.h

net-snmp-agent-includes.h



I thought that these headers or the routines in it handles the get request from the master agent.
Or have I to write a function for that?!



Sorry if I'm to slow or a little bit slow-witted but this is my first project, I'm programming since one year :)



Thanks
Julian


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