Hello Cecasacle,   Is this a new configuration or something that was working and now is not working? We don't typically assist directly in initial configurations as there are some Dell Professional services that can handle this task on your behalf  but I will see what I can do.   Please take a look at this resource and let me know if it helps. Dell EMC Networking N-Series  User’s Configuration Guide Version 6.7.0 Private VLANs Page 799-805 Configuring Private vlan page 855. [URL]    
Hello. I have a central switch model Dell S4048-ON with a few vlans created. One of them is the VLAN 111 used in a port-channel. Here is the configuration: ............... interface Port-channel 11description "Aula 11"no ip addressswitchportno shutdown ..... interface Vlan 111description vlan 111 Aula 11ip address 10.11.0.254/16untagged Port-channel 11ip pim sparse-modeip igmp immediate-leaveip igmp version 3ip access-group ACL100 inip helper-address 10.0.0.1no shutdown!   Connected to that port-channel is the student's classroom switch model Dell N1148T-ON (firmware 6.7.1.8). I created private vlan to avoid communication between students. Here is part of the config with 2 isolated ports and the LACP 1 and port 45 as private-vlan promiscuous:   Everything is working properly. In the classroom switch, isolated ports (1 and 2) can connect to the internet and other servers in the network (through port-channel 1), and also to port 47 in the same switch. From por 47 I can ping ports 1 and 2 and connect to any other server in the network. And finally ports 1 and 2 can't connect to each other as expected. The problem I have is I can't connect to the switch IP management address 10.11.0.253, from promiscuous ports (port-channel 1 and 47) or from isolated ports (not important for me). I can connect only to the management IP address using any port belonging to VLAN 1. And I would need to connect from central switch and port 47.  I don't know how to solve this. Any idea? Thanks in advance.  
N1148T-ON private vlan and management VLAN 1