Extract Config from Catalyst 3750 Stack - Password/Username unknown

[switchUpswitchDown]

Hi All,

Can anyone provide any guidance as to finding out the saved (or running) config on a Catalyst 3750 stack (fibre + copper mixture)?

I've got physical access to the switches, but unfortunately I don't have the username or passwords need to access enable mode/global config mode to make changes.

Thanks!

[luis_cordova]

Hi @switchUpswitchDown ,

Check this links:

https://community.cisco.com/t5/switching/cisco-3750-password-recovery/td-p/2064077

http://www.firewall.cx/cisco-technical-knowledgebase/cisco-switches/1164-cisco-catalyst-3750-x-3560-x-password-recovery.html

Regards

[Mark Malone]

Just to add for the recovery make sure you dont skip any steps in the re-naming section of the config file in password recovery or you may wipe/overwrite the config

[Deepak Kumar]

Hi,

1. Power off the switch and press hold the MODE button (Don't release it)

2. Plug the power cable and wait till you will not see the "Switch:" prompt. After that release the MODE button.

3. run the command "flash_init"

4. Run a command "rename flash:config.text flash:config.old

5. Run a command "boot"

The switch will boot and wait for boot proper.

6. Run a command "rename flash:config.old flash:config.text"

7. copy flash: config.text running-config

Your configuration is here and doesn't forget to change the password.

Regards,

Deepak Kumar

[paul driver]

Hello
Just like to add on some switch(s) you may have to also initiate the load_helper

1)
power cycle switch <- depress mode button until port 1 led shows solid for about 2-3 secs
flash_int
load_helper

2)
dir flash:
rename flash:config.text flash:config.old
boot

3)
rename flash:config.old flash:config.text
copy startup-config run
    .......change password(s)
wr
reload