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Home > Success Center > Network Performance Monitor (NPM) > NPM - Knowledgebase Articles > The DNS Hostname is not a valid format

The DNS Hostname is not a valid format

Created by Kate Asaff, last modified by MindTouch on Jun 23, 2016

Views: 1,446 Votes: 0 Revisions: 8

Overview

Error: The DNS hostname (name) is not a valid format.

Environment

  • NPM
  • SAM
  • SRM
  • NCM
  • NTA
  • EOC
  • UDT
  • IPAM
  • VNQM

Cause 

The DNS hostname does not fit the standard format as described in RFC 952.

Resolution

  1. The DNS hostname must fit the standards laid out in RFC 952.  Specifically, only the following characters are acceptable:

    0...9
    a...z
    A...Z
    .
    - (hyphen, not underscore)

 

 

 

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