The best source for information is going to be the user guides. www.dell.com/.../manuals www.dell.com/.../manuals I would bring the 8024-k out of simple mode.  Console # no mode simple  On both stacks you will need to aggregate the 4 ports together.  Here is an example of placing a port into an aggregation group. console(config)# interface gigabitethernet 1/0/5 console(config-if-1/0/5)# channel-group 1 mode (active/Auto) Once the ports are into channel-group 1, we can then configure the channel-group to carry traffic for multiple VLANs. console(config)# interface port-channel 1 console(config-if-po1)#switchport mode trunk console(config-if-po1)#switchport trunk allowed vlan add 2-150 Once that is done you should then have connectivity.  Keep us posted.
Hi All I am getting more confused by the minute.  I have a pair of M8024-k blade switches in a M1000e enclosure, on the outside I have a pair of N3048 switches. I seem to have the stacking working on the M8024-k but I found a config guide for Simple mode that says take port 17-20 out of the Port Aggregation group on the pair, and leave the stack ports and the internal ports in the PA group.  When I do this they won't stay out of the group, whether I do it in the CLI or the GUI.   Does anyone have a config guide which shows how I can Trunk the 2 pairs together and allow 4 vlans as I keep coming up with no access to the blade servers in the enclosure?  Do I have to come out of simple mode on the M8024-k to achieve this?  Any help gratefully received. [IMAGE]  
M8024-k stack (pair) to M3048 stack (pair) Lags, VLANS and port groups?