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Home > Success Center > Network Performance Monitor (NPM) > DNS entry is unavailable on a monitored node

DNS entry is unavailable on a monitored node

Updated June 29, 2017

Overview

A DNS entry is not available and is displayed as a blank entry on a node.

Environment

  • All NPM versions
  • All SAM versions
  • All UDT versions

Cause 

The reverse DNS is unavailable for the IP address on the DNS server where the Orion server is configured to query on the primary NIC.

Resolution

  1. Establish a remote connection to the Orion server.
  2. Open a command prompt and run the following command:
    nslookup [IP address]

If no response is received, this means that Orion is unable to determine the DNS.

Consult with the DNS server administrator as there may be no PTR record or a badly configured record is present.

 

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