I am not able to discover nodes using SNMP. What should I check?

The following are the basic oid’s and Mib’s which has to be enabled to discover the device:

sysDescr : .
ipAdEntAddr : .
ipAdEntIfIndex : .
ifIndex : .
ifPhysAddress: .
sysObjectID : .

Note : If you are able to do snmp walk but still you are unable to discover the device then check for the above oids in the snmp walk. These oids are must for SapphireIMS to discover the device. If not present then ask the customer to enable following mibs in the device.

SNMPv2-MIB (v2)