RE: How the SNMP read(differentiate) the different indexes in the OID ?

>> How the SNMP read(differentiate) the different indexes in the OID ?
In this particular case 3 of them of are of fixed length, so SNMP specs tell how to interpret the indexes. Ip address is in dotted format, so there will be 3 dots for ip. In case variable length( e.g name), it needs to prepended with number of characters in the index. E.g
Index 1: name1 (varaiable length)
Index2:  new-name2 (varaiable length)

Now the index for any ROW for the table will be
5.ASCII(n).ASCII(a).ASCII(m).ASCII(e).ASCII(1).9. ASCII(n).ASCII(e).ASCII(w).ASCII(-).ASCII(n).ASCII(a).ASCII(m).ASCII(e).ASCII(2)

5 here is length of "name1" and 9 is length of "new-name2"

For fixed length string or IP Addresses, lndeth doesn't have to pre-pended


>> How net-snmp code find out this object having  4 indexes ?
To use net-snmp code needs to know the MIB, then only net-snmp can handle the request else it will respond back with "Unkown OID". Somebody has to compile MIB and fill the needed places to net-snmp to accept a OID


Is there any net-snmp function available(Or similar which I can modify and use) which will separate out the different Indexes
>> I am not sure of a function. I believe the generated code will have access to all the indexes. I believe it will be good if you try to compile a MIB, see the data-structures generated. On generation of code, there is structure generated for indexes also. Look for GENERATED_TABLE_mib_index.

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