I'm having alot of trouble trying to connect more that one LAG between two SG300-52 switches.
Basically i have configured both switches with the same vlans. For 2 of the vlans i would like to connect them together between the two switches using LAG. Switch1 has Vlan 5 (ports 1-12) & Vlan 10 (Ports 25-36) with LAG configured on ports 1-2 and ports 25-26. I have setup the second switch identical to the first. But when i connect the LAG's there is no connectivty. If i disconnect one LAG the other starts working.
Can you only have i interconnect LAG between switches?
This sounds like a Spanning Tree issue. Spanning Tree is designed to prevent a loop in your network, which will cause network issues when a loop does exist. When Spanning Tree detects the loop, it will shut down the port or in your case the LAG. When Spanning Tree detects that the active LAG is down, it will activate the LAG that was previously shut down in order to maintain network connectivity.
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