The other day, I needed to remove two switches from a stack of Cisco 3750-Xs. Not hard to do really, but most people think you can just unconnect the stack cables on the back of the units and reconfigure the last cable to go back to the master. Well, that is ok to do, somewhat, and will work, but the master still thinks the switches will come back sometime. They do show as removed, but what we really want to do is to 'completly' remove them. You do this with the 'no switch member# provision' command. Below, I removed switch 5 and 6 from the stack. Dont forget to do a 'wr mem' when you are done. The config will still be there until you do. You wont want that.
SwitchStack#sh switch
Switch/Stack Mac Address : 10f3.11cb.0700
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 10f3.11cb.0700 15 3 Ready
2 Member 7cad.7494.7a80 10 3 Ready
3 Member 7cad.748a.b300 9 3 Ready
4 Member 7cad.7472.9b00 8 3 Ready
5 Member 0000.0000.0000 0 0 Removed
6 Member 0000.0000.0000 0 0 Removed
SwitchStack(config)#no switch 6 provision
SwitchStack(config)#exit
SwitchStack#sh switch
Switch/Stack Mac Address : 10f3.11cb.0700
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 10f3.11cb.0700 15 3 Ready
2 Member 7cad.7494.7a80 10 3 Ready
3 Member 7cad.748a.b300 9 3 Ready
4 Member 7cad.7472.9b00 8 3 Ready
5 Member 0000.0000.0000 0 0 Removed
SwitchStack#
SwitchStack#sh switch
Switch/Stack Mac Address : 10f3.11cb.0700
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 10f3.11cb.0700 15 3 Ready
2 Member 7cad.7494.7a80 10 3 Ready
3 Member 7cad.748a.b300 9 3 Ready
4 Member 7cad.7472.9b00 8 3 Ready
5 Member 0000.0000.0000 0 0 Removed
SwitchStack#config t
Enter configuration commands, one per line. End with CNTL/Z.
SwitchStack(config)#no switch 5 provision
SwitchStack(config)#exit
SwitchStack#sh switch
Switch/Stack Mac Address : 10f3.11cb.0700
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 10f3.11cb.0700 15 3 Ready
2 Member 7cad.7494.7a80 10 3 Ready
3 Member 7cad.748a.b300 9 3 Ready
4 Member 7cad.7472.9b00 8 3 Ready
SwitchStack#
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