Devices show “Down” after migration to new LibreNMS host. Old host shows them “Up”

Help
1

I migrated from an old LibreNMS server to a new one. On the old box, most devices are Up. On the new box, many are Down.
Environment
• Install: Docker (librenms + db)
• Old Libre host: old-libre.example.net
• New Libre host: new-libre.example.net
• Devices: mix of Cisco IOS, Cisco ASA, and Extreme
• Poller: local
What I see
• Devices page on the new server shows many red “Down”.

I have double checked the setup from the old and new, and the settings are the same.

Questions

• In Docker installs, what are the most common causes when the old server shows devices Up, but the new one shows them Down

2

Can anyone help?

3

Check why it says they are down, if it’s icmp then it’s because LibreNMS can’t ping it, if it’s snmp it’s because the snmp details are wrong or a firewall/acl is blocking it.

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