I took a look at the snmp code and I found out that in the function static void _init_snmp(void) there is a static variable called have_done_init that prevents snmp from doing more than one initialization. The same happens in the function void init_snmp(const char *type). I think that in my case, it is necessary to make a complete initialization each time a switch over is done. Is it a way to do this without modifying the sources?
Thanks,
Rafael
On 9/6/05, Thomas Anders <[EMAIL PROTECTED]> wrote:
Rafael Garabato wrote:
> I increased the tcpdump's snaplen as you asked. This time I didn't get
> the same problem as the time before. Only 2 packets are transmited each
> time the session is opened.
That's exactly how the engineID discovery is supposed to work.
So what happens now if you actually perform a GET before and after the
changeover?
> However I noticed that there is a parameter
> called " usmStatsUnknownEngineIDs.0" that always increments its value
> untill the Change over. Could this be the problem?
That's just a counter of the received packets with unknown engineIDs
(most-if-not-all of them being the engineID probes). Don't worry.
What you *should* worry about, again, is that you will need to increment
the engineBoots value when the "new" agent becomes active after the
changeover (compared to the "old" agent). *How* you pass that
information between the two systems is *your* problem and will depend on
your failover setup. For the testing just manually tweak the
"engineBoots" value in your persistent config file (usually
/var/net-snmp/snmpd.conf) on the "new" system *before* starting the new
agent.
+Thomas
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Thomas Anders (thomas.anders at blue-cable.de)
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