[solved] Incorrect traffic of interfaces

[cybluesky]

Hi all:
I'm useing Cacti to monitor a kind of firewall based on Linux. The Firewall has 8 Gigaethernet interfaces, I tested it with a high performance. so ervery interface has about 1G traffic, but Cacti only displayed 400M. So I changed to PRTG, and PRTG displayed is correct. I used the SNMP - Interfaces statistics. Please help me to fix it. thanks

[BSOD2600]

Already using snmpv2? http://forums.cacti.net/viewtopic.php?f=6&t=24526

[cybluesky]

Already using snmpv2? http://forums.cacti.net/viewtopic.php?f=6&t=24526

Thanks for your reply.
I'm using snmp v2.

[BSOD2600]

Great, but are you also using the 64-bit Counters templates so the ifHCInOctets counter is being utilized?
What OID does PRTG use?
The poller cache will show what OID it's using.

[cybluesky]

Great, but are you also using the 64-bit Counters templates so the ifHCInOctets counter is being utilized?
What OID does PRTG use?
The poller cache will show what OID it's using.

Thank you agagin. I'm very appreciate it.
I was tried to find what the problem is. I have tried 64-bit Counters termplates, but still had problem. I caputred snmp packets, 32-bit counters and 64-bit counters are not the same OID. I tried another software called PRTG, PRTG get the same OID as 64-bit counters of Cacti, and PRTG can draw a correct graphic. so I guess the problem maybe the algorithm of Cacti templates is different form PRTG. Do you know the templates how to comput the traffic?
eg.The OID of PRTG used
eth5
Object Name: 1.3.6.1.2.1.31.1.1.1.6.7 (iso.3.6.1.2.1.31.1.1.1.6.7) inpkt/s
Object Name: 1.3.6.1.2.1.31.1.1.1.10.7 (iso.3.6.1.2.1.31.1.1.1.10.7) outpkt/s

[BSOD2600]

1. change the cacti logging level from low to medium to view the raw counter data returned from the device.
2. read though http://docs.cacti.net/manual:088:4_help ... #debugging yet?