Dear fellow Dlink-Users,
I try to use the DGS-3627G as a CoreSwitch and would like to trunk/aggregate two DEM-311GT SFP modules in each switch.
I wonder, why I need to put the aggregated ports on the DES-1252 into a VLAN while the DGS-3627G does not request this configuration. I tried a little but my missing knowledge even locked me out of the DES-1252. At least it has got a reset button

.
Does any fellow Dlink user has information about this trunking setup of the DES-1252? Do the VLAN-IDs need to conform on both ends?
Any suggestions will by gracefully read.
Regards,
Martin Petersen