Smarts IP: What does IsMightBeDown mean?

Products

• VMware Smart Assurance

Issue/Introduction

Symptoms:


Smarts IP: What does IsMightBeDown mean?
Smarts IP: How does Smarts determine the value of IsMightBeDown?


Smarts IP Availability Manager does not provide a description for the IsMightBeDown attribute

Environment

VMware Smart Assurance - SMARTS

Resolution

IsMightBeDown is used to trigger the "MightBeDown" event which is used in Root Cause Analysis for UnitaryComputerSystem::Down. This attribute depends on the "IsEveryNeighborUnresponsive" attribute, and indicates that the system is not responding to SNMP polls or ICMP pings and is logically near the root-cause problem.

The following is the logic used to compute this attribute:

propagate attribute boolean or IsSystemUnresponsive
"TRUE if the system is unresponsive."
 = ICIM_UnitaryComputerSystem, PartOf, IsMightBeDown;

 event MightBeDown
 "Indicates that the system is not responding to SNMP polls or ICMP "
 "pings and is logically near the root-cause problem."
        loss(1.0)
        = ((!IsProxy && IsMightBeDown) ""
    ( IsProxy && IsProxyMightBeDown))
   else FALSE;

 readonly computed attribute boolean IsMightBeDown
 = IsUnresponsive && (Type != HOST "" !IsEveryNeighborUnresponsive);