problem with cisco 2924 switch, snmp counting

[khans]

Hi!
I'm testing zabbix with cisco switch 2924.
I've downloaded template for 2960, and modified it to my needs.
I have 2mbit ADSL connection.
I connected to one port of switch ADSL modem and to 2nd port router. Both recognized as FullDuplex 100Mbps.
I've tried 2 counters one 32-bit (.1.3.6.1.2.1.2.2.1.10) second 64-bit (.1.3.6.1.2.1.31.1.1.1.6).
And I got 2 different results. I've downloaded big iso file with browser speed showing 210 kbytes, iptraf shows also about 210 kbytes.
32 bit counter shows about 210-230 Kbps.
64 bit counter shows about 270-290 Kbps.
Which counter shows correct values?
Also counters shows Kbps (Kilo bytes per second?), but I want Kilo bits per second. Unit used in template is bps (which should mean bit per second ?).

I'd like to also create total bandwidth counting ( month base) per port. How can I do it?

Thanks and regards,
Hans

[khans]

I've found then if I use multiplier field (8) it shows kilobits.
But still don't understand difference in 32-bit,64-bit counters.
I notice that Interval time in big way modifies graphs. default in template was 15 sec, but it seems that 20 sec works better for me . How can I be sure how big interval should be set up to show real bandwidth use?

Hans

[khans]

Anybody?
Especially I need help with setting up bandwitdh counting per month.

Regards,
Hans