This is a common question. In this case (IE, if the throughput is >100Mbps) you should instead use SNMPv2. This will cause MRTG to use the Hc counters, which are64bit and so do not suffer from this problem.
Steve ________________________________________ From: [EMAIL PROTECTED] [EMAIL PROTECTED] On Behalf Of Alexey V. Panfilov [EMAIL PROTECTED] Sent: Saturday, 29 November 2008 1:08 a.m. To: [email protected] Subject: [mrtg] How mrtg counts used bandwith? Hi everyone! I've the question: how mrtg counts used bandwidth of high-loaded ports? AFAIK, mrtg uses ifInOctets.PORT_NUM and ifOutOctets.PORT_NUM OIDs. For example, I've Cisco3560G and I got next result: IF-MIB::ifOutOctets.10128 = Counter32: 1751739669 but Counter32 can have maximum value of 2^32-1. So, if I've traffic around 1Gbit/sec on this port Counter will reset to zero around 30 sec, but mrtg collects data every 5 min... Please, explain me mrtg's algorithm... P.S. Sorry for bad english -- Best regards, Alexey V. Panfilov ICQ: 1053180 Jabber: [EMAIL PROTECTED] mailto: [EMAIL PROTECTED] www: http://www.subnets.ru _______________________________________________ mrtg mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/mrtg _______________________________________________ mrtg mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/mrtg
