如何重置3850交换机密码

Posted 2020-12-27

SUMMARY STEPS：

1. Connect a terminal or PC to the switch.
2. Set the line speed on the emulation software to 9600 baud.
3. Power off the standalone switch or the entire switch stack.
4. Reconnect the power cord to the or the active switch. Within 15 seconds, press the Mode button while
   the System LED is still flashing green. Continue pressing the Mode button until all the system LEDs turn
   on and remain solid; then release the Mode button.
5. After recovering the password, reload the switch or the active switch .
6. Power on the remaining switches in the stack.

DETAILED STEPS：
Step 1 ：Connect a terminal or PC to the switch.
? Connect a terminal or a PC with terminal-emulation software to the switch console port. If you are recovering the
password for a switch stack, connect to the console port of the active switch or
? Connect a PC to the Ethernet management port. If you are recovering the password for a switch stack, connect to
the Ethernet management port of a stack member .
Step 2 ：Set the line speed on the emulation software to 9600 baud.
Step 3 ：Power off the standalone switch or the entire switch stack.
Step 4 ：Reconnect the power cord to the or the active switch. Within 15 seconds, press the Mode button while the System LED
is still flashing green. Continue pressing the Mode button until all the system LEDs turn on and remain solid; then release
the Mode button.
?
Switch:
Xmodem file system is available.
Base ethernet MAC Address: 20:37:06:4d:e9:80
Verifying bootloader digital signature.
The system has been interrupted prior to loading the operating
system software, console will be reset to 9600 baud rate.

proceed to the Procedure with Password Recovery Enabled section, and follow the steps：

Step 1 Initialize the flash file system.
Switch: flash_init
Step 2 Ignore the startup configuration with the following command:
Switch: SWITCH_IGNORE_STARTUP_CFG=1
Step 3 Boot the switch with the packages.conf file from flash.
Switch: boot flash:packages.conf
Step 4 Terminate the initial configuration dialog by answering No.
Would you like to enter the initial configuration dialog? [yes/no]: No
Step 5 At the switch prompt, enter privileged EXEC mode.
Switch> enable
Switch#
Step 6 Copy the startup configuration to running configuration.
Switch# copy startup-config running-config Destination filename [running-config]?

Press Return in response to the confirmation prompts. The configuration file is now reloaded, and you can change the
password.
Step 7 Enter global configuration mode and change the enable password.
Switch# configure terminal
Switch(config)#
Step 8 Write the running configuration to the startup configuration file.
Switch# copy running-config startup-config
Step 9 Confirm that manual boot mode is enabled.
Switch# show boot
BOOT variable = flash:packages.conf;
Manual Boot = yes
Enable Break = yes
Step 10 Reload the switch.
Switch# reload
Step 11 Return the Bootloader parameters (previously changed in Steps 2 and 3) to their original values.
Switch: switch: SWITCH_IGNORE_STARTUP_CFG=0
Step 12 Boot the switch with the packages.conf file from flash.
Switch: boot flash:packages.conf
Step 13 After the switch boots up, disable manual boot on the switch.
Switch(config)# no boot manual