When the switches are stacked they act as one unit, so don’t think of them as three separate switches. Think of them as 1 switch with ports 1/1/1-1/3/48. LAG 1 on the stack will be LAG 1 regardless of which ports you put in it. So for LAG1 you could have port 1/1/1, 1/2/1, 1/3/1 and even though that lag consists of ports from three physically different switches, since they are stacked the ports would all belong to the same LAG. Hope this helps some, if not let me know.
Hi, I bought 3X Powerconnect N3048P Switches and want to set these up with ESXi 5.1 but I am new to Dell switches and have a few questions. What I am trying to achieve is: I have 3X Poweredge R710 servers with 4Nics each In VMWare I have 1 vSwitch and I want to have all 4 Nics added to this Vswitch as Nic Teaming. (Multiple VLans but that should be easy to setup) The 3 X N3048P switches are in a stack. Now Dell best practise describes that the cabling should look as follows: Server 1: Nic 1 + 2 go to Switch 1 Server 1: Nic 3 + 4 go to Switch 2 Server 2: Nic 1 + 2 go to Switch 2 Server 2: Nic 3 + 4 go to Switch 3 Server 3: Nic 1 + 2 go to Switch 3 Server 3: Nic 3 + 4 go to Switch 1 How do I set up the LAG's on the Dell switches? Do I create 3 LAGS on each switch? And If I create LAG1, LAG2 and LAG3 on switch1  do I use the same LAG ID on switch 2 and switch 3? If it is the same LAG ID do I then connect Server 1 Nic 1 + 2 to LAG1 on switch 1 and server 1 NIC 3 + 4 to LAG1 on Switch 2 and so on?  I have added a simple drawing below. Excuse the looks it was done in paint. I hope you understand what I am trying to achieve? Thanks in advance. [IMAGE] 
Powerconnect N3048P and ESXi 5.1 LAG setup