Hi Pyae - or Wai :) As I can't see your graph, I can't be all sure - but I expect you're facing the problem of counter overflow, which is really common on fast links.
Be sure to read the long integer counters in SNMPv2 instead of the short integer counters in SNMPv1: ifHCInUcastPkts.<ifindex>&ifHCOutUcastPkts.<ifindex>:<community>@<A.B.C.D>:::::2 The overflow generates a graph which typically increases from 'night' until a certain level (around the 200 M) then drops to zero and continues the 'normal' trace during 'day' - and then back. Best regards Jan Ferré Pyae Phyo Wai wrote: > On 2/1/10, Pyae Phyo Wai <[email protected]> wrote: > >> Dear ALL >> I'm also facing terrible problem with mrtg false graph. I hv attached >> WAN gigabit interface of cisco router. When bandwidth over 200 Mbits/s >> , graph goes false. When i monitor real time, it show nearly >> 300Mbits/s in router. I use SNMP version 1 for mrtg as well as my >> router , also use-default 16 bits option for mrtg. other interfaces on >> switch isn't much differ with real time traffic. but cisco router >> I attach graph and cfg reference. Please take a look. >> >> Target[x.x.x.x]: 9:[email protected]:::::1 >> SetEnv[x.x.x.x]: MRTG_INT_IP="x.x.x.x" >> MRTG_INT_DESCR="GigabitEthernet11/0/0" >> MaxBytes[x.x.x.x]: 125000000 >> Title[x.x.x.x]: *** WAN interface*** >> PageTop[x.x.x.x]: <h1>*** WAN interface***</h1> >> >> >> Any idea ? >> >> Hope for advice from you soon. >> >> With Regards >> JLP >> >> > > _______________________________________________ > mrtg mailing list > [email protected] > https://lists.oetiker.ch/cgi-bin/listinfo/mrtg > -- Jan Ferré - UNI-C Netdrift - DTU Bygning 304, DK-2800 Lyngby tlf. +45 3587 8935, cell. +45 2160 8012, fax. +45 3587 8990 EAN-no.: 5798000555198 _______________________________________________ mrtg mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/mrtg
