H3C交换机：H3C E552C-X登录Console口时会跳过认证密码

H3C交换机：H3C E552C-X登录Console口时会跳过认证密码
（1）交换机启动时，可以一直按Ctrl+B，以免来不及
<h3c-sw4>Press Ctrl+D to access BASIC BOOT MENU
Booting Normal Extend BootWare....
********************************************************************************
*                                                                              *
*                   H3C E552C-X Switch BOOTROM, Version 121                    *
*                                                                              *
********************************************************************************
Copyright (c) 2004-2018 New H3C Technologies Co., Ltd.
Creation Date       : May  4 2018, 16:17:55
CPU Clock Speed     : 800MHz
Memory Size         : 512MB
Flash Size          : 256MB
CPLD Version        : 001
PCB Version         : Ver.A
Mac Address         : 542bde21b135
Press Ctrl+B to access EXTENDED BOOT MENU...0
Loading the main image files...
Loading file flash:/e500c_d-cmw710-system-r6126p20.bin..........................
..................Done.Press Ctrl+D to access BASIC BOOT MENU
Booting Normal Extend BootWare....
********************************************************************************
*                                                                              *
*                   H3C E552C-X Switch BOOTROM, Version 121                    *
*                                                                              *
********************************************************************************
Copyright (c) 2004-2018 New H3C Technologies Co., Ltd.
Creation Date       : May  4 2018, 16:17:55
CPU Clock Speed     : 800MHz
Memory Size         : 512MB
Flash Size          : 256MB
CPLD Version        : 001
PCB Version         : Ver.A
Mac Address         : 542bde21b135
Press Ctrl+B to access EXTENDED BOOT MENU...0
Password recovery capability is enabled.

（2）按Ctrl+P，输入Y确认，然后再输入0重启交换机

   EXTENDED BOOT MENU
1. Download image to flash
2. Select image to boot
3. Display all files in flash
4. Delete file from flash
5. Restore to factory default configuration
6. Enter BootRom upgrade menu
7. Skip current system configuration
8. Set switch startup mode
9. Set The Operating Device
0. Reboot
Ctrl+Z: Access EXTENDED ASSISTANT MENU
Ctrl+F: Format file system
Ctrl+P: Change authentication for console login
Ctrl+R: Download image to SDRAM and run
Ctrl+C: Display Copyright
Enter your choice(0-9):  按Ctrl+P
Authentication is required for console login.
Are you sure you want to skip the authentication for console login? (Y/N):Y
Setting...Done.
   EXTENDED BOOT MENU
1. Download image to flash
2. Select image to boot
3. Display all files in flash
4. Delete file from flash
5. Restore to factory default configuration
6. Enter BootRom upgrade menu
7. Skip current system configuration
8. Set switch startup mode
9. Set The Operating Device
0. Reboot
Ctrl+Z: Access EXTENDED ASSISTANT MENU
Ctrl+F: Format file system
Ctrl+P: Change authentication for console login
Ctrl+R: Download image to SDRAM and run
Ctrl+C: Display Copyright
Enter your choice(0-9): 0

) k
`Starting......
Press Ctrl+D to access BASIC BOOT MENU
Booting Normal Extend BootWare....

********************************************************************************
*                                                                              *
*                   H3C E552C-X Switch BOOTROM, Version 121                    *
*                                                                              *
********************************************************************************
Copyright (c) 2004-2018 New H3C Technologies Co., Ltd.

Creation Date       : May  4 2018, 16:17:55
CPU Clock Speed     : 800MHz
Memory Size         : 512MB
Flash Size          : 256MB
CPLD Version        : 001
PCB Version         : Ver.A
Mac Address         : 542bde21b135

Press Ctrl+B to access EXTENDED BOOT MENU...0

Loading the main image files...
Loading file flash:/e500c_d-cmw710-system-r6126p20.bin..........................
..................Done.
Loading file flash:/e500c_d-cmw710-boot-r6126p20.bin.........Done.

Image file flash:/e500c_d-cmw710-boot-r6126p20.bin is self-decompressing........
................................................................................
................................................................................
................................................................................
................................................................................
...................................................................Done.
System is starting...
Cryptographic algorithms tests passed.

Line aux0 is available.
Press ENTER to get started.
<h3c-sw4>%Jan  1 00:01:19:188 2013 h3c-sw4 SHELL/5/SHELL_LOGIN: TTY logged in from aux0.
<h3c-sw4>
<h3c-sw4>
<h3c-sw4>

（3）设置一个console密码或者保留空密码

#配置密码
line aux 0
 authentication-mode password
 set authentication password simple 密码

#配置空密码

#
line aux 0
  authentication-mode none

[h3c-sw4-line-aux0]authentication-mode ?
  none      Login without authentication
  password  Password authentication
  scheme    Authentication use AAA
[h3c-sw4-line-aux0]