D-Link 3100 24P - DGS Switch - Stackable User Manual page 86

Notes about Trunking on the DGS-3100 Series
DGS-3100 series supports up to 32 LAGs per device (or stack).
NOTE: A port must belong to the default VLAN when the user is adding the port to a LAG, After
adding the port to the LAG, the LAG itself can be joined to other VLAN.
When a port is added to a LAG, the port's configuration is stopping to be active, this configuration will return to be active
only after the port will be removed from the LAG.
DGS-3100 Series Gigabit Stackable Managed Switch User Manual
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