I opened up a set of new Power Connect 6248’s today and 4 stacking modules as well. I installed both stacking modules, and then connected the stacking cables as laid out in the installation manual (Switch 1 Port 1 going to Switch 2 Port 2, and Switch 2 Port 1 going to Switch 1 Port 2) and then turned them on.
To my surprise they both had the “Master” light lit, and both had stack ID light of “1” lit. I consoled into each of them, and neither saw the other switch, even though all of the cables were correct, and the instruction manual said that nothing else needed to be preformed. The manual stated that the first switch started would automatically become master, and the others would just fall in line after it, this was not the case for me.
Here is what I had to do to get them working properly, and performing like stacked switches:
- log into the first switch via the console
- Type “show stack-port” and then press enter, this should verify that your stack ports are set to “ethernet” instead of “stack” which is why they are not forming a stack
- Type “config”, press enter, and then type “stack” and press enter.
- Type “stack-port 1/xg1 stack” and then press enter.
- Type “stack-port 1/xg2 stack” and then press enter.
- Repeat these steps on the other switch, and then reboot both of them. But don’t forget to Type “Copy run start” before rebooting.
- Once they both reboot only one should be displaying the “Master” light now, move your console cable to this switch, log into the console and type “show switch”. Both switches should now be listed, one as the master (the one you are console connected to, and the other(s) in “Oper Stby” waiting to assume the master role if the master fails.