Network Management

Trap or Syslog Viewer displays IP address or old hostname in the Orion Platform

This article explains how Orion manages the IP address or hostname populated for traps received.

First published date

10/18/2018 7:04 PM

Last published date

11/10/2021 7:55 AM

Overview

This article explains how Orion resolves the IP address of a trap to a hostname based on a hierarchical order which is then displayed in the log viewer.

Product section

Network Performance Monitor

Cause

  • The IP address will be resolved to a hostname in the following order when we receive a trap or syslog message:
  1. Hosts file entry
  2. DNS result
  3. Hostname held in the Orion database
  • Beginning with Orion NPM version 10.0, both forward and reverse DNS records are required to correctly determine the IP address of the device sending the message.  If there is no hostname result found in one of the methods listed above, the trap or syslog message will retain the IP address.  

Resolution

  • The IP address will be resolved to a hostname in the following order when we receive a trap or syslog message:
  1. Hosts file entry *
  2. DNS result
  3. Hostname in the Orion database. Replace the IP with the hostname in the hostname column once table editing is enabled in the "traps" table.
  • Beginning with Orion NPM version 10.0, both forward and reverse DNS records are required to correctly determine the IP address of the device sending the message.  If there is no hostname result found in one of the methods listed above, the trap or syslog message will retain the IP address.
 
  • * The hosts file can be found in "C:\windows\system32\drivers\etc\hosts". Add the IP and then hostname as shown below. To save the Hosts file, notepad will need to be run as administrator.
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