We need to reset password for several possible reasons, forgot to set the local user account (this happened to me while I was labbing to simulate the environment to test the commands on the switch before implementation) or the password has been expired. These steps work for Extreme SummitX460 on XOS 15.3.1.4. For older summit series, such as Alpine Series, you can try the steps from the following link.
- Connect switch to serial console;
- Cold boot your device (power of the device, wait a minute, power on the device);
- In the very beginning of the boot process press Space to enter bootrom menu;
- Follow this procedure to remove any configuration and passwords:
- These steps result the switch with default login (admin and empty password)
BootRom > config none Configuration selected: none BootRom > boot
For your information, I took this from help menu on bootrom:
BootRom > h
Boot and Load
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pboot boot
oload load memory from hostport
boot boot an image
Misc
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loader Sets which BootLoader BootStrap will boot
call call function
devls list devices
reboot Reboot system (hard reset)
flash program flash memory
show display information
config select configuration
Debugger
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cpu select cpuinfo
c continue execution
t trace (single step)
to trace (step over)
db delete break point(s)
b set break point(s)
g start execution (go)
sym define symbol
ls list symbols
r display/set register
l list (disassemble) memory
bt stack backtrace
Shell
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enable enable features
h on-line help
help on-line help
? on-line help
sh command shell
vers print version info
eval evaluate and print result
stty set tty options
plvl Set the debug print level
hi display command history
about about PMON2000
Network
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ifaddr Configure Network Interface
ping ping remote host
Memory
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map show memory map
m modify memory
d display memory
compare compare memory to memory
copy copy memory to memory
fill fill memory
search search memory
mt tests all available memory up to 2GB using 64 bit physical addresses
Device
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Environment
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env display variable
set display/set variable
unset unset variable(s)
eset edit variable
Compact Flash
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cfopen open a file on the CF
cfclose close a file on the CF
cfread read <n> bytes from CF file
dir list contents of CF directory
cd change working CF directory
pwd print working CF directory
Download
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configip configure the bootloader ip address
download download an image
Cmdline
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CF
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You can see my log files when I perform the reset. You can download it from my dropbox link
Thank you and hope it helps.
Source: