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Forum Discussion
Solved
LAG between Unifi Aggregation switch and Netgear switch keeps failing
I set up a LAG on ports 1 and 2 on Unifi Aggregation switch. Ports 1 and 2 are connected to the 2 SFP+ ports on the Netgear switch with 2 DAC cables. Options on the Netgear are set to LACP, Link Trap...
Nevermind I solved it myself. Enabling Spanning Tree Protocol (STP) on the switch and the LAG group fixed it. The Netgear switch is now connected to my Unifi switch at 20Gbps.
Start with a current or at lest recent firmware.
Provide the best information of the switch and LAG config on both switches on that LAG.
Configure and enable memory logs, FASH Log, Server Log (assuming there is a syslog server).
Enable trap log on the links/LAG.
Similar on the other brand switch config environment.
Ensure the current firmware is active, and reboot the switch.
Consult the logs, and grab what happens around the moment when the "LED stop flashing" use an out-of-band connection for the switch access if required.
Post this information here on the community.
Various LAG run rock solid for daily operations of several MS510 TXUP. However, I admit we don't run LAG over SFP+ and DAC connections.
Crystal ball is out of service.
Nevermind I solved it myself. Enabling Spanning Tree Protocol (STP) on the switch and the LAG group fixed it. The Netgear switch is now connected to my Unifi switch at 20Gbps.
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