Index of table in SNMP Agent

Hi Everyone

I have a question for SNMP table handler.
I am trying to setup a SNMP Agent to manage data from outside of SNMP Agent. I try to use mib2c.iterate.conf to generate code, I found that the table handler need to keep a index list of the table data, but as my data is from out side of SNMP Agent, I am confused why SNMP need to keep a copy of the index list, this index list might cause the data inconsistent with  out-side data when the list is mismatch with out-side data.

Is this a must that SNMP Agent need to keep a index list for table handler?

Thanks and Nice weekend!
Barclay

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