Some of my Operator Console (OC) groups go blank after 30 days.

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

We are seeing some of our groups go blank after 30 days. We are not collecting any QOS for these devices; we are just monitoring alarms.
We have to keep adding these devices back every month.

Environment

UIM 20.4 CU3 and above

Cause

What's New in DX UIM 20.4 CU3 (broadcom.com)

Expire Inactive Devices

Discovery Server periodically removes any inventory that had no activity in the recent past or no QoS flowing into the database. By default, discovery_server looks for device activity within the last 30 days and QoS time range. The discovery_server considers the maximum raw age, History age, or Daily average age from the data_engine probe. The discovery server supports the following configuration to customize the inventory removal process:

• setup/expire_time

  : Specify the number of days of inactivity after which the device is removed from the inventory. The default is 30 days.
• setup/expire_computer_system_by_alive_time_only

  : When set to 

  true

  , discovery_server does not look for QoS flow and deletes the device based on the activity. When set to 

  false

   or QoS is not being stored (expire_time is set to a high value), the discovery_server does not delete the devices. The default is false.

Resolution

Broadcom support does not recommend disabling this feature.

 We suggest you turn on a single simple qos that collects once a day. This will prevent discovery server from removing the device due to lack of qos in the database and it will minimize the amount of data being added to the database.