OID sent and received bits per second

Question

I am looking for the SNMP OID that can deliver the sent and received bits per second for the UTM9 appliance like in the screen shot below 
 
 I have the OIDs for octets sent and received but its the TOTAL number of octets sent and received while I am looking for sent and received bits per second. 
 Thanks in advance.

dirkkotte · Accepted Answer

" Where is here? " - is the Standard MIB2 definition. But there is no such counter. The only bit/sec SNMP Variable is for interface speed. 
 ifInOctets is the total interface byte counter 
 &Delta;ifInOctets is the difference between two SNMP requests (you have to calculate by yourself ... my tolalnow-totalold 
 &Delta;time the time between two SNMP requests 
 so the result from &Delta;ifInOctets/&Delta;time is bytes per second 
 better explained here: 
 www.bob-team.de/.../