Failed connection to EnvisaLink 4 - resolved

Information and support for EnvisaLink modules.

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Joined: Fri Jun 12, 2020 4:49 pm

Failed connection to EnvisaLink 4 - resolved

Postby jamesfpb » Fri Jun 12, 2020 5:06 pm

Purchased Envisalink 4 and have been struggling with intermittent connectivity, really slow local access, packet loss and firmware update failure.
Envisalink is directly connected to Ubiquiti switch with Ubiquiti USG providing DHCP.

For reasons that I still don't understand, situation was fully resolved by disabling STP (Spanning Tree Protocol) and LLDP Med for the switch port where my Envisalink 4 connected. From assessing packet loss, I believe both settings are affecting connectivity but it's possible that one or other of the 2 is much more important.

Real PITA to work this out so wanted to share for the benefit of others.
I am curious if anyone can explain why these settings matter.


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