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How to default a Summit switch when the password is unknown:

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TitleHow to default a Summit switch when the password is unknown:
Objective
Reset a switch to the factory default config from the boot rom, as the admin password is unknown.
Environment
  • Summit
  • EXOS All
  • All bootrom versions except 2.0.2.1
Procedure
Summit X870 procedure:
  • Power cycle the switch while connected to the console port.
  • When you see the GNU GRUB menu select one of the below options
    • EXOS: Primary   - 22.x.x.x - default configuration
    • EXOS: Secondary - 22.x.x.x - default configuration


All other EXOS Switches:
  • Power cycle the switch while connected to the console port.
  • When prompted, press and hold the spacebar to enter the boot rom
  • At the boot rom prompt, type the command config none
  • Type the command boot to continue the boot process.
  • Once the switch boots up to EXOS, save the config with the command save to overwrite the old config with the new, blank config.
Additional notes
In Boot Rom v2.0.2.1, the config none command has been removed for security reasons. It was added back into Boot Rom v2.0.2.3.
If the config none command is not present, the only way to default the switch from boot rom is by loading a rescue image (see How to use the Boot Rom menu to tftp download a new image to the switch).

If the banner still appears after using the config none command, still login with the default username and password anyway. The banner can be stored in a different part of the memory so it displays before EXOS is fully loaded.
There is no mechanical process such as a switch to clear the config, which means console access is mandatory.

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