Criteria for Smarts IP to generate a DOWN notifications

Products

• VMware Smart Assurance
• VMware Telco Cloud Service Assurance

Issue/Introduction

Smarts does not generate a down notification for a device which is down. Provides details on criteria/conditions for a down notification. 

Environment

Smarts 10.1.X / 2.X

Resolution

The down notification generates if the following conditions are satisfied:

(IsUnresponsive && (HasNoPartition || !IsEveryNeighborUnresponsive))
 
So if IsUnresponsive = TRUE and HasNoPartition = TRUE or IsEveryNeighborUnresponsive = FALSE the down event is triggered.

Hence, at least one of a device's neighbors should be responsive, to get a down event in Smarts. If all connected devices are also down, no down notification is created.  

Also if the device is part of a partition and all the devices in the partition group are down, the partition down event overrides the system down event.