Router IOS fault solution

Source: Internet
Author: User

The router IOS fault solution is explained in detail, and IOS faults are often encountered. How to solve this IOS fault becomes a concern of us, the Troubleshooting steps are explained in depth during the testing process.

First, use the dedicated CONSOLE cable of the router to connect the COM port of the notebook with the CONSOLE port of the router, and enable the Super Terminal to establish a connection with the router on the notebook. After the power of the router is connected, you can see the following loading information on the Super Terminal:

The last statement indicates that the system initialization fails. After you see "Autoboot in 2 seconds-press ESC to abort and enter prom.", press the "ESC" key to enter the start mode. By default, the IOS fault system image file in the flash card is directed when the router is started. If the IOS fault file is lost, the system initialization fails. To successfully boot the system, you must download the system image file again. We can use the following steps to restore the lost IOS fault:

Set the IP address of the laptop and the IP address of the vro Ethernet Management port to the same subnet. For example, set the IP address of your laptop to 10.10.10.2 and the mask to 255.255.255.0. And connect the NIC of the computer with the en0 of SSR with the crossover line.

Install the TFTP service software on your laptop. This software is actually opening port 69 on the computer to accept incoming data, or passing data out through this port. It can be installed on WIN9X, WINDOWS2000, or WINDOWSXP. Then, place the router's IOS fault system image file in the default path of TFTP.
◆ Set the IP address of en0 on the vro。 to 10.10.10.1 and mask to 255.255.255.0 in startup mode ).
◆ SSR-BOOT> set netaddr 10.10.10.1 set the IP address of the router)
◆ SSR-BOOT> set bootaddr 10.10.10.2 set the address of the started TFTP Server)
◆ SSR-BOOT> set netmask 255.255.255.0 set subnet mask)

Use the PING command to test the connectivity between the router and the notebook. If the connectivity is correct, run the following command:
◆ SSR-BOOT> boot ssrimage "ssrimage" is put in the TFTP server root directory of the image file name)
◆ SSR-BOOT> reboot to restart the router)

After the router is started, enter the management mode and copy the system image file to the flash card. The command format is as follows: System image add for example: "10.10.10.2" is the IP address of the computer, and "ssr3200" is the System image file name stored in the root directory of the tftp server. After "kernel:", the Progress indicator is displayed: from 0% to 100%. After the download is complete, perform automatic verification to determine whether the download is correct.

At this point, the system image file has been downloaded. Type system image list to view the list of system image files on the PCMCIA flash card. If your PCMCIA card has a large capacity, you can store two system images. Then use the system image choose command to select the system image as the system at the next Startup of SSR.

For example, you do not need to activate this operation. The new system image will be used after the next restart. After selecting the system image, the next time you use the system image list to display the list of system image files, "[selected for next boot]" will be displayed after this file.

When the router is started, if the following information is displayed on the Super Terminal, it indicates that the IOS fault is successfully loaded: the incidence of such faults is high, so the administrator must learn, although different brands of routers use different commands, the basic steps or principles are similar.

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