I'm facing an issue with my Windows Server 2022 where I have a team of 4 NICs, and 2 of them are showing LACP negotiation errors. The NICs are NetXtreme-E Advanced Dual-port 10Gb SFP+ Ethernet OCP 3.0 BCM57412, and I'm using a 1GbE RJ45 transceiver (SF-CP100CM-GP). I've tried turning off Energy Efficient Ethernet, Large Send Offload V2, and Flow Control, and I've manually set the speed to 1GbE. The switch I'm working with is the cnMatrix EX2052-P. When I don't use aggregation, the cards work fine, but they still encounter LACP negotiation errors even when teamed alone. I've also updated to the latest drivers and firmware from Dell. Interestingly, the other two cards (NetXtreme 1Gbe RJ45) are functioning properly in LACP. Does anyone have any suggestions to resolve this issue?
2 Answers
Have you considered using a SET team instead of the traditional NIC teaming? This may help solve the negotiation errors you're encountering. SET teams can offer better support for LACP operations.
It sounds like you're dealing with a classic LACP setup issue. Make sure that your switch's port configuration matches the NIC settings closely—check things like aggregation methods and control frame rates. If the switch ports aren't configured to sync with your NICs, you'll run into LACP errors. How exactly do you have the switch configured?
I have the port channel in hybrid mode, two VLANs active, and I've also ensured STP is enabled along with BPDU and port fast settings. The other two cards are working fine in LACP under the same conditions.

I’ve set up a TEAM in dynamic load mode and confirmed that LACP is enabled. Still seeing some negotiation issues, though.