SNMP Service is Misconfigured

Last Modified

Mon Feb 26 17:01 GMT 2018

Description

  • You've set up SNMP monitoring on a device, however, the SNMP service remains in a Misconfigured state.

Environment

  • N-able N-central (any version)

Solution

To troubleshoot SNMP monitoring that is misconfigured or otherwise non-functional, try the following steps:

  • Verify you have enabled SNMP on the hardware device with a "GET"/"READ ONLY" community string of 'public'. Some hardware will have multiple places to enable this.
  • Verify that the devices are able to accept SNMP requests from "ALL" sources rather than specific IP addresses.
  • Ensure you have enabled SNMP by clicking All Devices > [Device Name]> Settings > Monitoring Options tab and the community string populated. This is case sensitive.
  • Make sure the appropriate device class is selected on the All Devices > [Device Name]> Settings > Properties tab.
  • Re-discover the device by running a discovery with the SNMP string populated with the community string.
  • Re-apply the Service Templates that may include:
    • Network Devices for Switches or Network Devices.
    • Network Devices and Cisco ASA or Cisco PIX for Cisco Firewalls.
    • Network Devices and SonicWALL for SonicWALL devices.
    • Network Devices and Fortinet Fortigate Firewalls for Fortinet Fortigate Firewalls.
    • Network Devices and Watchguard Firewall for Watchguard Firewalls.
    • Network Devices and Juniper (ScreenOS) for Juniper (ScreenOS) Firewalls.
    • Network Devices and Juniper Secure Access for non-ScreenOS Juniper Firewalls.
    • Network Devices and Untangle Network Gateway for Untangle Firewalls.
    • Servers - Windows and Dell Servers for non-iDRAC Dell servers.
    • Servers - Windows and Dell Servers using iDRAC for iDRAC enabled Dell servers.
    • Servers - Windows and HP Servers for HP servers.
    • etc.

If this does not pull the data you want, you may not have SNMP configured on the device correctly, or the probe cannot reach the device. Download an application such as the free MIB Browser from iReasoning. Install this software on the probe server, point it at the SNMP enabled network device by IP and choose to walk the device. It should show a collection of OIDs. If it does not, SNMP is not properly configured.

It's also possible that the device does not support much detail for SNMP. A search in Google for its "MIB" file or "OID" list may confirm this, as will other people's experience with trying to monitor it. Tier 1 devices such as Enterprise level Cisco, SonicWall, Procurve switches and so on should work without issue.