Instance Identification
How does the manager refer to a variable ?
- Simple variables: append “.0” to variable’s object identifier
- Eg: udpInDatagrams.0 = 1.3.6.1.2.1.7.1.0
- Only leaf nodes can be referred (since SNMP can only transfer scalars)
- Table elements:
- Each element in a table needs to be fetched separately.
- Traverse MIB based upon lexicographic ordering of object identifiers using get-next
- Column-by-column: Elements of each column first.