Problem with "Interface In/Out erros/discarded packets&

[slackfr]

Hi,

I graph "Interface In/Out erros/discarded packets".
On this graph, i see all counter to "0". I say "ok, i have no trouble on my interface".
But in fact, i have "errors_in" on this interface but they aren't graphed.
Let see error counters with ifconfig:

eth0 Link encap:Ethernet HWaddr 00:17:31:7A:79:7B
inet addr:91.121.1.9 Bcast:91.121.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10437552 errors:10414

with snmp:
snmpwalk -v1 -c XXXXXX localhost IF-MIB::ifInErrors.1
IF-MIB::ifInErrors.1 = Counter32: 10410

Cacti log:
01/09/2007 12:36:21 PM - CACTID: Poller[0] Host[2] DS[49] SNMP: v1: localhost, dsname: errors_in, oid: .1.3.6.1.2.1.2.2.1.14.1, value: 10410

Why theses errors aren't graphed?

[gandalf]

Because this is a COUNTER. If it always sticks to this value, there is no increase of errors. In fact, there have been this amount of errors, but currently this counter semms not to increase. So, currently you have no errors
Reinhard

[slackfr]

In fact this value increase (i have forget to specify this in the last post).

But now, i have change the network driver, i was using the SysKonnect Yukon2 support, and now i use New SysKonnect GigaEthernet support, and i don't have any more errors.

Another strange things with the old driver: when i had error, i see them increase in ifconfig but NOT in snmp. An when i restarted snmp, the snmp value become the same value as ifconfig, but value of ifconfig still increased in the time but not the snmp value (i wish you understand me, i'm french and my english isn't perfect...)

[gandalf]

This looks like a bug in the snmp agent for that system. As cacti gets the data from snmp, i will report only this
Reinhard