Show lldp neighbors works but LibreNMS empty

Hi there,

Sorry to ask, but, it’s my first few days using LibreNMS and I’m having an issue with the Neighbours which I think is making the Maps not work.

I’ve gone through the user guide and my setup seems fine. I can see the neighbours on each switch with ‘show lldp neighbors’. But its blank in LibreNMS.

To note, all switches were added with their internal 10.x IPs as the hostnames have no DNS etc. Everything else seems to be working fine via SNMP.

Any advice on what to check would be appreciated.

librenms@librenms:~$ ./validate.php
Component | Version
--------- | -------
LibreNMS  | 24.3.0-17-g54e07d0b5 (2024-04-15T20:25:08+01:00)
DB Schema | 2024_02_07_151845_custom_map_additions (290)
PHP       | 8.1.2-1ubuntu2.15
Python    | 3.10.12
Database  | MariaDB 10.6.16-MariaDB-0ubuntu0.22.04.1
RRDTool   | 1.7.2
SNMP      | 5.9.1

[OK]    Composer Version: 2.7.2
[OK]    Dependencies up-to-date.
[OK]    Database connection successful
[OK]    Database Schema is current
[OK]    SQL Server meets minimum requirements
[OK]    lower_case_table_names is enabled
[OK]    MySQL engine is optimal
[OK]    Database and column collations are correct
[OK]    Database schema correct
[OK]    MySQL and PHP time match
[OK]    Active pollers found
[OK]    Dispatcher Service not detected
[OK]    Locks are functional
[OK]    Python poller wrapper is polling
[OK]    Redis is unavailable
[OK]    rrd_dir is writable
[OK]    rrdtool version ok

It seems LLDP is not available via SNMP from your devices.
You would need to verify manually whether the devices respond to OIDs belonging to LLDP (OID 1.0.8802.1.1.2 ieee8021lldp, lldpMIB reference info).