Smarts IP: After Smarts IP discovery for a certified device, an expected entity within the device is not discovered

Products

• VMware

Issue/Introduction

Symptoms:




After Smarts IP discovery for a certified device, an expected entity is not discovered within the device
After Smarts IP discovery for a Cisco 3750 device, there is no Fan or Power Supply discovered within the device

Device is certified in Smarts IP for specific entity Availability or performance monitoring, and the entity is available in the device, but the entity is not being discovered or monitored in the device

Environment

VMware Smart Assurance - SMARTS

Cause

The environment contains Restricted MIBs. The absence of an expected entity (such as the Fan and Power Supply in the above problem symptom) can be caused by the MIB being restricted at the device level, which can impact Smarts IP discovery.

Restricted MIBs
Restricted MIBs are used in some locations for security purposes so that only a limited MIB is available to be polled from a device. For the Cisco 3750 Router device mentioned in the above problem symptom (SysOID .1.3.6.1.4.1.9.1.544), the Fan is created from FanState OID .1.3.6.1.4.1.9.9.13.1.4.1.3, while the power supply is created from PowerSupply OID .1.3.6.1.4.1.9.9.13.1.5.1.3.

If you looked in the SNMP walk file of the device where the MIB has been restricted for these entities as in the following example, you would see that neither of these OIDs are present:

ASL File: ic-cisco-router-health.asl

ciscoEnvMonFanDescrOID { ciscoMIBOID ".9.13.1.4.1.2" }

ciscoEnvMonFanStateOID { ciscoMIBOID ".9.13.1.4.1.3" }

ciscoEnvMonSupplyDescrOID { ciscoMIBOID ".9.13.1.5.1.2" }

ciscoEnvMonSupplyStateOID { ciscoMIBOID ".9.13.1.5.1.3" }

Resolution

To resolve this issue, you must allow the required OIDs to be polled at the device level.