[network::ubiquiti::unifi::snmp::plugin] : mode virtual-access-points return UNKNOWN: SNMP Table Request: Cant get a single value.

[PhilCANDIDO]

Hi all !

Quick description

I have a new Unifi Access Point U6-LR. On this device the supervision return the following result :

UNKNOWN: SNMP Table Request: Cant get a single value.

But on older devis like Unifi UAP-AC-Pro-Gen2, I haven't the issue.

How to reproduce

Centreon-engine command executed :

/usr/bin/perl /var/lib/centreon-plugins/src/centreon_plugins.pl --plugin=network::ubiquiti::unifi::snmp::plugin --mode=vi
rtual-access-points --hostname=192.168.3.172 --snmp-version='2c' --snmp-community='public'  --filter-name='' --filter-ssid='' --unknown-status='' --warning-status='' --critical-status='%{status} eq "down"' --warning-total='' --critical-total='' --warning-total-clients-connected='' --critical-total-cl
ients-connected='' --warning-clients-connected='' --critical-clients-connected='' --warning-traffic-in='' --critical-traffic-in='' --warning-traffic-out=
'' --critical-traffic-out='' --verbose --filter-counters='connected'

Environment:

Poller Server : Almalinux 9.5
Release of the plugin : plugins-20250114

This file content the result of command snmpwalk -ObentU -v 2c -c public 192.168.3.172 .1.3.6.1.4.1

unifi-lr-u6.txt

[lucie-dubrunfaut]

Hello :)

When a plugin returns the Cant get a single value error, this doesn’t means that the plugin itself isn't working, this is explained as follows:

UNKNOWN: SNMP GET Request : Can't get a single value​
SNMP Plugins request one or several OIDs from the target devices' MIBS. When it doesn't obtain a value for one of these OIDs, it returns an UNKNOWN state to warn the user.

Frequently, the device doesn't ship the MIB or one of the OIDs the Plugin utilizes. In other words, the Plugin used is not suitable for this device.

Ref: Troubleshooting Plugin errors

So in your case the new equipment isn't supported by the current plugin. If you want to ask a plugin enhancement for compatibility, please address it here to be take into account and vote on (you can link this github issue in your idea proposition).
Thank you for your understanding.