Cisco ROMMON, Set Boot Variable, Password Reset

MACaddr

Entering ROMMON Mode

Power ON the switch and the press the MODE Button (1) ONLY when you see “System LED” is rapidly blinking. Pressing and holding the MODE button on startup WILL NOT WORK.

Reference: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9300/hardware/install/b_c9300_hig/b_c9300_hig_chapter_01001.html

Setting up manual boot variable

!
config t
!
boot system flash:packages.conf
exit
!
copy run start (or write mem)
!
reload
!

Password Reset

1. Enter ROMMON Mode
   Switch:
   Switch: SWITCH_IGNORE_STARTUP_CFG=1
   Switch: reset


2. Once the switch has booted, copy the Startup-config the Running-config.
   Switch>
   Switch> enable
   Switch# copy start runn


3. From here, you may SET THE NEW PASSWORD or Add new user profile(s) 


4. Revert to DEFAULT STARTUP by removing the "ignore startupconfig" variables
   Switch# no system ignore startupconfig switch all
   Switch# copy runn start

Reference: https://community.cisco.com/t5/switching/c9300-switch-reset-to-factory/td-p/3358278

Related Posts