[mrtg] Re: Problems with interfaces running at GigE speed
michiel at xsnews.nl
Mon Nov 7 10:32:51 MET 2005
I'm using mrtg-2.11.1. I'm mrtg-ing a few hosts (linux machines) with
net-snmp 220.127.116.11 and compiled them with --mfd-rewrites, so the 64bit
counters show up.
But still it looks like MRTG either doesnt use these or the 64bit
counters in snmp aren't working correctly.
Pavel Ruzicka wrote:
>>I'm using mrtg to monitor some servers with GigE connections to the
>>internet. All these servers are pushing 600-800mbit to the internet,
>>causing counter rollover in snmp.
>>I've recompiled SNMP with --with-mfd-rewrites to enable 64-bit counters
>>in net-snmp. I'm running mrtg with :::::2 at every host in mrtg.cfg.
> MRTG probably doesn't use net-snmp tools. What version of MRTG you have?
> It's possible that, your device (what device you read?) doesn't support
> 64bit counters and MRTG doesn't read them.
>>The problem is that I still have problems with counter wrapping, also
>>with the ':::::2' option added.
>>I'm running mrtg every minute.
> Running every 5 minutes is enough with 64bit counters.
>>Any comments to make this work?
> I measure traffic on STM-16 and Gigabit interfaces on Cisco routers and
> switches without problems.
> Best regards,
> Pavel Ruzicka
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