The 64-bit counter rollover is likely the problem here. I've regenerated my config and we'll see how it goes. Thank you both Jan and Dan.
Also, thanks for the ifref tip. This helps me not with this problem, but with another problem I've got where my router re-enumerates interfaces when it reboots. (I know this isn't the problem with my switch, as it hasn't rebooted, and I already tried regenerating the config, without it being fixed.) ________________________________ From: Koelstra, J. (Jan) [mailto:[EMAIL PROTECTED] Sent: Friday, March 21, 2008 11:31 AM To: Kettler, Matt; [email protected] Subject: RE: [mrtg] cisco switches, etherchannel,and artificially low graph values? Matt, It looks like your config is not using the 64bit counters but the 32bit counters. At about 114Mbits/s the 32bit counters roll over once per 5 minutes. MRTG can deal with one roll over per interval but there is no way to deal with multiple roll overs. Resent versions of MRTG detect the availability of the ifHC* (i.e. 64bit) counters. In the older versions you need to specify the usage of the 64bit counters in the cfgmaker command: --snmp-options=:::::2 You can also manualy add the :::::2 at the end of the targetlines in the mrtg cfg file to get the 64bit counters. An other possibility is that the ifIndex for the specific port has changed, and now you are looking at an graph with figures from an other port. This can easily happen after changes in the configuration. To fix an interface to one graph you can add '--ifref=name' or '--ifref=descr' in the cfgmaker command. HTH, Jan. _________________________________________________________ Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u niet de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, wordt u verzocht dat aan de afzender te melden en het bericht te verwijderen. De staat aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die verband houdt met risico's verbonden aan het elektronisch verzenden van berichten. _________________________________________________________ This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. The state accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages. _________________________________________________________
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