Hello I have a weird situation with a compiled snmpd V7.5.3 and not able to find out what's going on.
I have a linux system. At first instance I used the "official" snmpd (sudo apt-get install snmpd ... ) and added a reduced set of OIDs from an own MIB (with several scalar OIDs) in a dynamic loadable module following the steps of the corresponding tutorial. It worked fine. So far so good. Next, I had to add more OIDs that belonged to a table. I followed the corresponding steps to add the table and got it working. In this case, the functionality for that table was added as a subagent. So at this moment everything was fine. But I realized that one OID from the table was an OCTET STRING which size was 65536 and in my case it only worked up to 1472 bytes. I investigated a little and I realized I had to recompile snmpd with that change. I recompiled. The OID with big size worked perfectly well, with a big string (around 50000 bytes). But unfortunately (here comes the problem) the initial scalar OIDs added by means of the dynamic loadable module didn't work: the response for a command snmpget is always "No Such Object available on this agent at this OID". More investigation and debugging. I see the following: 1. Function dlmod_load_module is called (dlmod.c) 2. Inside that function, function dl_init is called in turn 3. From my dynamic loadable module, the function init_... is called (I checked it adding it a return value and capturing it in function dlmod_load_module and showing by means of DEBUGMSGTL) but I don't see the log at the beginning of function init_... (I use "DEBUGMSGTL"). So this leads me to suspect there is some problem. I have investigated a lot but with no results ... Any ideas? Thank you very much. Jose.
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