Detailed explanation of switch IOS Failure Recovery

Use the Xmodem method to restore the first part of IOS, tools, and notebook settings www.2cto.com I. After the switch control port is powered on, we connect the CONSOLE data line of the switch to the CONSOLE port of the switch. On the other end, can we connect to our laptop? If there is no same interface, we have to use USB to turn it. Remember to install the usb to serial port driver (available on the Internet ), this line will work. After the driver www.2cto.com is installed, let's set the speed. Right-click my computer and choose "manage". Then, choose "manage. Click OK. In this way, the physical connection is complete, isn't it fun. Www.2cto.com 2. The tool secureCRT connects to the switch tool secureCRT. You can download the Chinese version on the Internet. After installation. Open the secureCRT that has been installed, click the quick connection item, such as the second icon, and then select the protocol, port, and baud rate for the quick connection, and click Connect to connect to the vswitch. Part 2: Upload the OS file to vswitch 1. We have just used the secureCRT tool to connect to the vswitch using the Serial protocol. If the OS breaks down, it won't go into the system, and it will come here. On the page, enter <Ctrl + B> to enter the BOOT menu, and then enter the password (the password for entering the BOOT menu is blank by default. If you have set a BOOT menu password, but the password has been lost, contact your agent ). Here we press enter to go to OK. **************************************** * H3C S5800-56C BOOTROM, version 212 ************************************** * *********************************** Copyright (c) 2004-2011 Hangzhou H3C Technologies Co ., ltd. creation Date: Feb 23 2011,15: 47: 03CPU Clock Speed: 750 MHzMemory Size: 1024 MBFlash Size: 512 MBCPLD Version: 003PCB Version: Ver. BMac Address: C4CAD9C52 9 ABPress Ctrl-B to enter Extended Boot menu... 0 Please input BootRom password: BOOT MENU1. Download application file to flash Download the application to Flash 2. select application file to boot Select Startup file 3. display all files in flash Display all files in Flash 4. delete file from flash Delete files in Flash 5. modify BootRom password 6. enter BootRom upgrade menu to Enter BootROM upgrade menu 7. skip current system configuration Settings restart does not run the current configuration file 8. set BootR Om password recovery resume BootROM password 9. Set switch startup mode to Set switch start mode 0. Reboot. Restart the vswitch as prompted above. Because IOS is broken or accidentally deleted (3 is also available or 4 is deleted), we need to download the IOS again, so enter 1 here and press ENTER;
2. Enter 3 and press enter (set the XMODE Protocol Parameter) 1. set TFTP protocol parameters2. Set FTP protocol parameters3. Set XMODEM protocol parameters0.return to boot menu 3. Select Download rate. If the download speed is 5, it is 11520. Please select your download baudrate: 1.*96002. 192003. 384004. 576005. 1152000. return to boot menu 4. Disconnect the terminal, reset the terminal speed to 11520 and connect to the vswitch. Press enter to display the CCC character. The connection is normal. 6. Select transmission-send xmodem in the secureCRT terminal window. in the displayed dialog box, browse the binfile to be uploaded, in the Protocol box, select Xmodem and then click send. In this way, the OS file is transferred to the switch. 8. After the download is complete, enter the file name when the following prompt appears (for some models, the extension must be entered, so we still have a good extension ). The file you download is not a app file, please name the file! At this time, we enter the file name and press back. Then, the file is saved. 10. Enter main and press enter to specify IOS as the main guide 11. Then, we will disconnect the terminal again, set the terminal speed to 9600, and connect again. 12. Restart the device.
Source http://ctcmcc.blog.51cto.com/148050/1052623