I have a problem with two models of SLM2048.
I only than configured in these devices was 4 Vlans and one link Aggregation port between these devices.
I'm detecting than some ports don´t work (I connect one workstation in these port and the port don´t up, but in other port if up)
Can be a hardware failure? or can be the switch is blocking these port?
I am not sure I fully understand your port problems. Is this a single port failure or do you have an end to end problem between ports on two different switches?