I have a question with respect to counters in SNMP and the rollover of
counters. If anyone can point me to a precedence or recommendation for the
metrics reporting that I intend to do, I would be very grateful.
I'm writing a MIB that supports reports metrics from hardware/firmware. Since
hardware and firmware have constraints on memory space, bits for metrics
recording come at a premium. The metrics that I wish to report roll over at
odd bit counts. Some are at 29 bits; others at 48. I can collect these
metrics into Count32 and Count64 variables respectively, but management
systems using these MIBs will see rollovers at 29 and 48. Is this acceptable?
I cannot believe that this situation has not been encountered before. RRDtool
and other tools only handle 32 or 64 bit rollovers, by default. I don't think
that they support odd rollover bit counts. If that is the case, maybe there
are algorithms or methodologies to adapt the lower counts to the higher ones
required by the SNMP MIB consumers.
Does anyone have a suggestion on this subject?
Judy Walker
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