On Fri, Oct 03, 2003 at 01:47:13PM +1000, [EMAIL PROTECTED] wrote: > Use 64 bit counters where possible (ifHCInOctets). Collecting > ifOperStatus, ifLastChange and sysUptime helps you distinguish between > certain events, ie counters resetting due to a reboot. Program the speed > of the interface in to your app so you can detect obviously wrong data. > Take in to account network and cpu load, plus how frequent counters > could wrap when deciding how often to poll.
The rrdtool COUNTER type handles wrapping. Dunno about unexpected outages. FWIW, rrdtool is less than mrtg in the sense that it doesn't do the snmp stuff, but mrtg does. For rrdtool, you have to do they snmp query by other means (snmpget/walk). But you probably know this. For me, rrdtool/cricket/ and the other stuff in the rrdworld links page on rrdtool.org promise easy monitoring and beautiful graphs in minutes, but the reality is lot of staring hard at manuals and fiddling with scripts. Matt -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
