September 28

Remove a Provisioned Switch from a Cisco Switch Stack

To remove a switch from stack, the member number of the switch must be changed back to 1 and the provision info must be removed.

Otherwise, you might see error “..Switch can not be un-provisioned when it is physically present..”

switch# show switch                (determine the member number of the switch)

switch(config)#switch 2 renumber 1 (assume the switch is member 2)

Write mem

Reload

switch(config)#no switch 2 provision

Write mem

Reload

September 28

Upgrade Cisco 3750E IOS

First, configure an ip address at the switch so that it can communicate with tftp server

conf t

int vlan 1

ip address 192.168.0.254 255.255.255.0

  • Backup old ios  copy flash:  tftp:   (please note, the file name is case sensitive. the source ios file can be at flash:/c3750e-universalkg-mz.122-44.SE2/c3750-universalk9-mz.122-44.SE2.bin, use sh flash: command to see first)

  • Delete old ios files       delete  flash:c3750e-universalk9-mz.122-55.SE1.bin (old ios name)

or delete the old folder 

delete the old tar file (if there is one)wr

  • Copy new ios bin file copy tftp: flash:

or  if you have tar file  use this command: archive tar /xtract tftp://192.168.0.2/c3750aaaaaa.tar flash:        (replace 192.168.0.2 with your tftp server ip address)

Set boot image

conf t

boot system flash:/c3750-advipservicesk9-mz.122-25.SEE1/c3750-advipservicesk9-mz.122-25.SEE1.bin

Exit

write memory 

  • Confirm boot image  show boot
  • reload
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