Update 3850 Switch Stack

Setting up the switch stack

1. Create a loop between all stack members with stack cables
    Note: For N stack members, you need N stack cables to run at full duplex and redundancy.

2. Create a loop between all stack members with power cables
    Note: Similar to stack cables, you would need N power cables.

3. Plug in power supplies. Every stack gets one. Add an extra power supply for every 4th stack member.
    Note: When plugging into rack, put one of the power cables into the wall and the rest into UPS for redundancy. 

4. Console into the switch and use screen (Linux) command to view it
    sudo screen /dev/ttyUSB0 9600

Updating the Software 

1. Enable privileged exec mode
   enable
   
   
2. Configure VLAN 1
   interface vlan 1
   
   
3. Turn the port hot
   no shut
   
   
4. Exit config mode
   end 
   
   
5. Enter global configuration mode
   configure terminal
   
   
6. Configure Gi1/0/1
   int gi1/0/1
    
7. Set access VLAN to 1
   switchport access vlan 1
   
   
8. Prevent inbound/outbound BPDU
   spanning-tree bpdufilter enable
   
   
9. Turn the port hot
   no shut
   
   
10. Plug a port into gi 1/0/1
    
    
11. Exit config mode
    end
    
    
12. Verify VLAN 1 picked up an IP address
    ip dhcp snooping binding vlan 1
    
    
13. Use scp to copy a file from remote server to the switch (must be on privileged net)
    copy scp://<username>@<file path> flash:/
    
    
14. Install the new firmware on the switch
    software install file flash:cat3k_caa-universalk9.SPA.03.03.04.SE.150-1.EZ4.bin