tmnxOspfIfMD5KeyIndex 1.3.6.1.4.1.6527.3.1.2.36.22.1.1

The value of tmnxOspfIfMD5KeyIndex provides a unique identifier for a key to be used for authentication on a specific OSPFv2 IP address. If tmnxOspfIfMD5KeyIndex has a value of 0, it means that no keys are configured.