RE: [cacti-user] Re: Initial release of the Bacula SNMP Subagent - v1.2

Hi Les,

> Mostly unrelated question: do you happen to know who to
> complain to about Linux x86_64 interface traffic stats
> from net-snmp being incorrect as reported by cacti?
> The target is Centos3.x (should be the same as RHEL3) with
> cacti running on a 32-bit Centos4 box.  After a reboot the
> values are correct for a while, then go crazy, showing
> 100 Meg traffic (the interface limit) most of the time.

Cacti (usually) just uses net-snmp's agent to get the data, so the issue is
probably "garbage in, garbage out".  I had seen problems a few months ago
(and posted here) where a 64-bit net-snmp agent will return a
greater-than-Counter32 value for a Counter32 value, which causes funny
results on the net-snmp 32-bit client side, especially when a snmpwalk is
being done. Interestingly enough, if the client was also 64-bit, then it
would "properly" report the bad value as it was transmitted.  I don't see
this problem anymore with recent versions of net-snmp.

If you want more information on what cacti sees, you can turn its log level
up to "medium", which will cause it to show the exact results in the log.
Further questions on this should probably go to a cacti forum.

============================
Darren Gamble
Planner, Regional Services
Shaw Cablesystems GP
630 - 3rd Avenue SW
Calgary, Alberta, Canada
T2P 4L4
(403) 781-4948


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