[mrtg] MRTG problems on a Foundry Switch?

Eric Brander mailinglists at rednarb.com
Tue Oct 9 02:28:33 CEST 2007

On 10/8/07, Scott Baker <bakers at web-ster.com> wrote:
> It seems like any time this port goes over 110 or so Mb/s the graph
> freaks out. It's like the counters are looping because it's so much
> bandwidth. The config is super simple:
> Target[foundry_1]: 1:xxxxxx at xxxxx:
> SetEnv[foundry_1]: MRTG_INT_IP="" MRTG_INT_DESCR="GigabitEthernet1"
> MaxBytes[foundry_1]: 125000000
> Title[foundry_1]: Traffic Analysis for 1 -- FESX424 Router
> PageTop[foundry_1]: <H1>Traffic Analysis for 1</H1>
> Options[foundry_1]: bits

You're seeing 32-bit counter wrap problem. Try SNMP v2 for 64-bit counters.

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