[mrtg] Re: SNMPv2c

Tobias Oetiker oetiker at ee.ethz.ch
Wed Jul 12 23:25:25 MEST 2000

Today you sent me mail regarding [mrtg] SNMPv2c:

*> Does mrtg 2.9.0 pre5 really have all the code to query 64-bit
*> counters?  I followed the suggestions in the CHANGES file (and I'm
*> querying a device which definitely supports SNMPv2c) but the log file
*> still contains 32-bit counter values.  Looking at the mrtg code, I can
*> see that it is setting $HC but there doesn't seem to be anything which
*> picks up this value elsewhere in the script.
*> I noticed that mrtg was understating traffic on high speed interfaces.
*> In our case throughput on the monitored interface reaches 250Mbits/sec
*> or more, which causes 32-bit counters to wrap roughly every two
*> minutes.  So sampling the 32-bit counter every five minutes is
*> tantamount to graphing line noise.
*> TIA
*> Simon
*> Target[asp-gbit]: -636:public at ge5500:::::2

well the code is there ... it may be wrong though ... this is a pre
release folks ... threfore I have not announced it ... can't do
much about people spilling the beans on freshmeat ... (grrr) ... 

however, If you try it and fix it ... patches are oh so welcome ... 

it will be a few more pre releases before 2.9.0 comes out ... so if
you want stable stuff wait till then. If you use pre and find a
bug, tell me or even better send a patch ... 


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