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Home > Success Center > Network Performance Monitor (NPM) > F5 Failover Node is displaying unknown

F5 Failover Node is displaying unknown

Created by Michael Almadova, last modified by MindTouch on Jun 23, 2016

Views: 12 Votes: 0 Revisions: 4


The F5 Failover Node suddenly appears that is has an unknown node. Removing and re-adding the node does not resolve the issue. 


NPM 11.5.2


The C: drive is out of space and polling has stopped on the Application Server. 


  1. Check the C: drive. 
  2. Clean up disk space. 
Last modified
22:21, 22 Jun 2016