LACP through SFP

talaveror

New Member
May 5, 2025
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I'm trying to expand my network infrastructure and added a 4xNIC card to my host and now I want to enable LACP on them to take advantage of such protocol, even found a handy guide (https://homenetworkguy.com/how-to/c...-proxmox-server-using-l2-switch-and-opnsense/) demonstrating the same topology I want for my network

For context, I'm using a Tp-Link TL-SG3428 Switch (firmware 2.30.8 Build 20250430 Rel.43731).

The thing is, I've configured the bond and bridge fine as I've already managed to get a working LACP connection using regular copper ports but when I try to build the LACP Config through the 4 SFP ports (using RJ45 SFP modules), I can't connect as LAG Port Status is always "LinkDown". This post https://forum.proxmox.com/threads/p...nd-tp-link-managed-switch.130789/#post-628502 gave some directions of some of the things needed.

This is the LACP Config
Screenshot_2.png

I've replicated exactly the same config in both LACP groups (SFP and copper ports) and the modules work fine as I've tested all cables and modules with a separate device.

Would this be some sort of limitation of SFP ports I'm unaware? Thanks in advance