LibreNMS detects Cisco WLC to Generic Device

Hello All,

My LibreNMS distributed pollers are working fine. Except one poller - I just installed today (Ubuntu 20.04 + Apache). Devices have been added to this poller, devices keeps up and down (fake alerts, devices were online), and devices are showing “Generic Device”. LibreNMS can not identify devices OS - such as Cisco WLC…

The poller “Total Polling time” are 0 second.

I got no idea on this issue. Can you please give me an advice?



Jeff Deng

run poller.php -d:

LibreNMS Poller
SQL[select migration from migrations order by id desc limit 1 [] 55.72ms]

SQL[select count(*) as aggregate from migrations limit 1 [] 55.16ms]

SQL[SELECT version() [] 55.5ms]

Version info:
Commit SHA: xxxxxxxxxxxxxxxxxxxxxxxx
Commit Date: 1604287518
DB Schema: 2020_07_27_00522_alter_devices_snmp_algo_columns (188)
PHP: 7.4.3
MySQL: 10.1.47-MariaDB-0ubuntu0.18.04.1
RRDTool: 1.7.2
Updating os_def.cache
Starting polling run:

SQL[SELECT * FROM devices WHERE disabled = 0 AND hostname = ‘’ ORDER BY device_id ASC [] 58.37ms]

SQL[select * from devices where device_id = ? limit 1 [12] 55.08ms]

SQL[select * from devices_attribs where devices_attribs.device_id = ? and devices_attribs.device_id is not null [12] 56.23ms]

Attempting to initialize OS: generic
OS initialized: LibreNMS\OS\Generic
Device ID: 12
OS: generic
Resolved IP: