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Home > Success Center > Network Performance Monitor (NPM) > NPM - Knowledgebase Articles > Interface names are displayed as question marks

Interface names are displayed as question marks

Created by Daniel Phillipps, last modified by Steven Bansil_ret on Apr 20, 2017

Views: 1,011 Votes: 0 Revisions: 5


This article describes the issue when similar interface names are displayed as ??????.



NPM version 11.x


This issue occurs when the device sends over the same display name for multiple interfaces. 


  1. Use the IP Address to find which interface is for that specific one.
  2. Edit the interface Details page.
  3. Change the display name.


Last modified