Two classes of collection are considered to count towards an ‘instance’ for licensing purposes.
1) I/O Collections.
I/O collections involve ifInOctets, ifOutOctets, ifInErrors, ifOutErrors, CiscoAvgBusy5 and sysuptime are in the I/O class.
2) Non- I/O Collections.
All other collections are considered as user defined collections.
If no collections exist then otadd will setup collections based purely on I/O OR if there is a definition for the SNMP sysObjectID in the templates.xml file then that will be used.
For I/O collections (from routers and switches or other network interfaces)
1 instance = 1 interface's InOctets, OutOctets, InErrors and OutErrors.
1 instance = Cisco CPU Average Busy 5
For all other collections 1 instance = 1 SNMP instance
So collection 1 router’s 10 interface’s In and Out octets is 10 instances.
Collecting In and Out octets from 5 routers each with router having 2 interfaces is also 10 instances.
Collecting a single OID instance (non I/O) from 7 switches is 7 instances.