Enterprise Lab 1 Data Center Back to Back vPC

I was wondering why you didn't stick to all your task from thesheet for this lab.
Was there a reason you didn't create vlan 20 and 21 on all switches or was this a mistake which was copied and paste from the previous task.

Also my show mac address-table dynamic is always empty. maybe it's the code I'm using on the 9k which is nxos.9.2.2.bin