Qlogic 光纤交换机 忘记或者不知道管理IP,帐号，密码的时候，需要重置一些配置信息（IP,USERNAME ,PASSWORD)
交换机的网线接口下面有个小孔，这个就是和普通家用ADSL路由器一样的恢复出厂设置按钮，交换机通电状态下，按下这个按钮4秒钟，它左侧最下面的那个状态灯会变黄，过会交换机会自动重新启动，用一个串口线（和mcdata 交换机的线一样，就是普通的标准线序，注意2头都是孔）使用9600 比特率，交换机提示输入帐号密码，输入prom/prom (username/password) ，从提示菜单中依次选3，输入y确认重置admin密码为password，选2输入y重置ip地址为10.0.0.1 ，最后选 7，输入y确认后系统重新启动。 下次打开你的交换机时就和手册中的缺省配置信息一样了。
ip: 10.0.0.1
username: admin
password: password
以下为qlogic 官方论坛的介绍信息原文。
How do you reset the SANbox switch password file back to factory default?
Question: How do you reset the SANbox switch password file back to factory default?
Response: Put switch into Maintenance Mode (disruptive) by pressing the maintenance mode switch/button for 4 seconds or power on and press the maintenance mode switch until the heartbeat LED is on solid (the maintenance mode switch is in the hole located under the Ethernet connection). Use Telnet and log in as prom/prom (username/password). Select menu option#3 (Reset Password File) to defaults (admin/password = username/password). Select menu option#7 (Reset Switch) to reset switch once selecting exiting from Maintenance Mode menu, then menu item#0 (Exit).
Sanbox2 login: prom
Password: prom
0) Exit
1) Image Unpack
2) Reset Network Config
3) Reset Password File
4) Copy Log Files
5) Remove Switch Config
6) Remake Filesystem
7) Reset Switch
Option: 3
OK, password file has been reset to factory defaults.
0) Exit
1) Image Unpack
2) Reset Network Config
3) Reset Password File
4) Copy Log Files
5) Remove Switch Config
6) Remake Filesystem
7) Reset Switch
Option: 7
Are you sure you want to reboot the switch? (y/n) y
0) Exit
1) Image Unpack
2) Reset Network Config
3) Reset Password File
4) Copy Log Files
5) Remove Switch Config
6) Remake Filesystem
7) Reset Switch
Option: 0
Note: After resetting, the SANbox switch will come up in Normal mode and be ready to use with a default password file.
For more information, refer to the Switch Installation Guide and search for a section on 'Recovering a Switch' to 'Reset User Accounts to Defaults'.