Because the system image is stored on an external CompactFlash memory card, you can use a PC with a compact flash card reader to format the card and copy a new system image file onto the card. However, this upgrade method is not commonly used.
Step 1 Remove the compact flash memory card from the router. Step 2 Insert the card into the compact flash card reader on a PC. Step 3 Use the PC to copy the system image file to the compact flash memory card.
Step 4 Remove the card from the compact flash card reader. Step 5 Insert the compact flash memory card into the router. This section describes how to load the new system image that you copied into flash memory. To load the new system image from the Cisco IOS software, follow these steps.
Optional boot system flash0: system-image-filename. Optional Repeat to specify the order in which the router should attempt to load any backup system images.
If the last digit in the configuration register is 0 or 1, proceed to Step 9. However, if the last digit in the configuration register is between 2 and F, proceed to Step When prompted to save the system configuration, enter no. When prompted to confirm the reload, enter y. Step 1 dir flash Note Determine whether the new system image is the first file or the only file listed in the dir flash0: command output is not required if it is the first file or only file listed.
Step 2 configure terminal. Use this command to enter global configuration mode:. Step 3 no boot system. Use this command to delete all entries in the bootable image list, which specifies the order in which the router attempts to load the system images at the next system reload or power cycle:. Step 4 If the new system image is the first file or the only file displayed in the dir flash0: command output, you do not need to perform the following step.
Use this command to load the new system image after the next system reload or power cycle. Step 5 Optional Repeat to specify the order in which the router should attempt to load any backup system images. Step 6 exit. Use this command to exit global configuration mode:. Step 7 show version. Use this command to display the configuration register setting:.
Step 8 If the last digit in the configuration register is 0 or 1, proceed to Step 9. Step 9 configure terminal. Step 10 config-register 0x Use this command to set the configuration register so that, after the next system reload or power cycle, the router loads a system image from the boot system commands in the startup configuration file:.
Step 11 exit. Step 12 copy run start. Use this command to copy the running configuration to the startup configuration:. Step 13 reload. Step 14 When prompted to save the system configuration, enter no :. Step 15 When prompted to confirm the reload, enter y :. Step 16 show version. Use this command to verify that the router loaded the proper system image:.
To load the new system image from ROM monitor mode, follow these steps. Step 1 dir flash0: [ partition-number : ]. Note whether the new system image is the first file or the only file listed in the dir flash0: command output. Step 2 confreg 0x Step 3 boot flash0: [ partition-number : ] filename. Use this command to force the router to load the new system image:. Step 5 enable. Use this command to enable privileged EXEC mode, and enter your password if prompted:. Step 6 configure terminal.
Step 7 no boot system. Eliminate all entries in the bootable image list, which specifies the system image that the router loads at startup:. Step 8 If the new system image is the first file or only the file displayed in the dir flash0: command output, this step is not required.
Use this command to load the new system image after the next system reload or power cycle:. Step 9 Optional Repeat to specify the order in which the router should attempt to load any backup system images. Step 10 exit. Step 11 copy run start.
To aid file recovery and to minimize downtime in the event of file corruption, we recommend that you save backup copies of the startup configuration file and the Cisco IOS software system image file on a server. Tip Do not erase any existing backup copies of your configuration and system image that you saved before upgrading your system image.
If you encounter serious problems using your new system image or startup configuration, you can quickly revert to the previous working configuration and system image.
This section describes how to upgrade the Cisco IOS image on the access point. To upgrade the IOS image on the access point, establish connectivity between the access point and the download server by following these steps:.
Enters the configuration mode for a Gigabit Ethernet interface on the router. Router config-if ip address Sets the IP address and subnet mask for the specified Gigabit Ethernet interface. Enables the Gigabit Ethernet interface, changing its state from administratively down to administratively up.
Exits configuration mode for the Gigabit Ethernet interface and returns to global configuration mode. The access point communicates with the external server and setup option 43 for the controller IP address in the DHCP pool configuration.
The following example shows a dhcp pool configuration:. Perform the following steps to confirm connectivity. Ping the external server from the router to confirm connectivity. Enter the service-module wlan-ap 0 session command to establish a session into the access point.
Ping the external server from the access point to confirm connectivity. The following example shows a sample router and access point configuration:. Follow the image upgrade instructions at Cisco. Note If the access point enters Bootloader mode, manually configure the IP address, default router, netmask, and default gateway to upgrade the IOS image.
Here is an example configuration. JDA flash0: apk9w7-tar. The following sections provide references related to upgrading the system image on your router. Matching Cisco IOS releases and features to hardware. Displaying minimum DRAM and flash memory requirements. Removing, inserting, and upgrading compact flash memory cards. Technical Assistance Center TAC home page, containing 30, pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools.
Registered Cisco. Skip to content Skip to search Skip to footer. Book Contents Book Contents. Find Matches in This Book. PDF - Complete Book 3. Updated: March 30, The configuration file copy can serve as a backup copy.
Enter the destination URL when prompted. Step 3 dir flash0: Router dir flash0: Displays the layout and contents of a flash memory file system. Learn the name of the system image file.
Copy the system image file to a server. This file can serve as a backup copy. Enter the flash memory partition number if prompted. Enter the filename and destination URL when prompted. Router copy flash0: tftp: Source filename [running-config]? Address or name of remote host []? Ensuring Adequate Flash Memory for the New System Image This section describes how to check whether your router has enough flash memory to upgrade to the new system image and, if necessary, how to properly delete files in flash memory to make room for the new system image.
Copying the System Image into Flash Memory This section describes how to copy the system image into the compact flash memory card for your router. Prerequisites The following details the logistics of upgrading the system image. Establish a console session to the router. We recommend that you connect your PC directly to the router console port.
Typically, the same filename is entered as was used in Step 4 : Destination filename []? Erase flash0: before copying? Caution Using the tftpdnld ROM monitor command may erase the system image, configuration, and data files. System image, configuration, and data files must be present on USB CF in slot0 for the router to boot and perform normal file operations. Enter ROM monitor mode 2. Locate the compact flash memory card slot on the router chassis.
For help with locating the slot and instructions for removing and inserting the card, see the hardware installation guide for your router. Caution Removing the compact flash memory card may disrupt the network because some software features use the compact flash memory card to store tables and other important data.
Loading the New System Image This section describes how to load the new system image that you copied into flash memory. Optional boot system flash0: system-image-filename 5. Step 2 configure terminal Use this command to enter global configuration mode: Router configure terminal Router config Step 3 no boot system Use this command to delete all entries in the bootable image list, which specifies the order in which the router attempts to load the system images at the next system reload or power cycle: Router config no boot system Step 4 If the new system image is the first file or the only file displayed in the dir flash0: command output, you do not need to perform the following step.
For example: Router config boot system flash0: cuniversalk9-mz. Step 6 exit Use this command to exit global configuration mode: Router config exit Router Step 7 show version Use this command to display the configuration register setting: Router show version Cisco Internetwork Operating System Software. Configuration register is 0x0 Router Step 8 If the last digit in the configuration register is 0 or 1, proceed to Step 9.
Step 9 configure terminal Use this command to enter global configuration mode: Router configure terminal Router config Step 10 config-register 0x Use this command to set the configuration register so that, after the next system reload or power cycle, the router loads a system image from the boot system commands in the startup configuration file: Router config config-register 0x Step 11 exit Use this command to exit global configuration mode: Router config exit Router Step 12 copy run start Use this command to copy the running configuration to the startup configuration: Router copy run start Step 13 reload Use this command to reload the operating system: Router reload Step 14 When prompted to save the system configuration, enter no : System configuration has been modified.
System returned to ROM by reload System image file is " flash0:cuniversalk9-mz. For help, see the hardware installation guide for your router.
Before using the ROM monitor, you should understand the following concepts:. The router boots to ROM monitor mode when one of the following occurs:. Note Recovering the system image is different from upgrading the system image.
You need to recover the system image if it becomes corrupt or if it is deleted because of a disaster that affects the memory device severely enough to require deleting all data on the memory device in order to load a system image.
This product can be configured using the Cisco command-line interface CLI. The CLI conforms to accessibility code because it is text based and it relies on a keyboard for navigation. All functions of the router can be configured and monitored through the CLI. For a complete list of guidelines and Cisco products adherence to accessibility, see the Cisco Accessibility Products document at:. Note This section does not describe how to perform all possible ROM monitor tasks. Use the command help to perform any tasks that are not described in this document.
This section provides two ways to enter ROM monitor mode:. To enter ROM monitor mode by reloading the router and entering the Break key sequence, follow these steps. Press Ctrl - Break. Interrupts the router reload and enters ROM monitor mode. The Break key sequence varies, depending on the software on your PC or terminal.
This section describes how to enter ROM monitor mode by setting the configuration register to boot to ROM monitor mode at the next system reload or power-cycle.
For more information about the configuration register, see the Changing the Configuration Register Settings document at:. Router config config-register 0x0. The following example shows how to set the configuration register to boot to ROM monitor mode:. This section describes how to display ROM monitor commands and command syntax options. Displays a summary of all available ROM monitor commands. Displays syntax information for a ROM monitor command. To display a list of the files and directories in the file system, use the dir command, as shown in the following example:.
This section describes how to load a system image by using the boot ROM monitor command. Determine the filename and location of the system image that you want to load. Note In IOS, flash0 will be aliased onto flash.
It is not necessary to use a bootloader image from the compact flash device. Any system image can be used for this purpose. Cisco E and Cisco E do not support this boot option. The following example shows how to load boot flash memory and USB boot flash memory:. If you want to configure the router to load a specified image at the next system reload or power-cycle, see the following documents:. This section describes how to modify the configuration register by using the confreg ROM monitor command.
You can also modify the configuration register setting from the Cisco IOS command-line interface CLI by using the config-register command in global configuration mode. The modified configuration register value is automatically written into NVRAM, but the new value does not take effect until you reset or power-cycle the router. Changes the configuration register settings while in ROM monitor mode. In the following example, the configuration register is set to boot the system image from flash memory:.
In the following example, no value is entered; therefore, the system prompts for each bit in the register:. This section describes how to obtain information on USB devices that are installed in the router. Displays the contents of the USB flash device, including directories, files, permissions, and sizes. Shows the targeted USB flash devices that are inserted in the router and the valid device names that may or may not be currently inserted.
Directory of usbflash Devices in device table:. Using this command improperly can adversely affect the functioning of the router. Before you can enter the tftpdnld command, you must set the ROM monitor environment variables.
Connect the TFTP server to a fixed network port on your router. Sets the TFTP server from which the software is downloaded. Sets the name and location of the file that is downloaded to the router. Optional Sets the input port to use one of the Gigabit Ethernet ports. The default is 0. Optional Sets the Gigabit Ethernet port speed mode, with these options:. Optional Determines whether the router performs a checksum test on the downloaded image.
Optional Designates the targeted flash device as compact flash or USB flash. The default is Optional Sets the amount of time, in seconds, before the download process times out. The default is seconds minutes.
Optional Sets the amount of time, in seconds, before the client will resend the ACK packet to indicate to the server to continue transmission of the remaining packets.
The default is 5 seconds. Optional Configures how the router displays file download progress, with these options:. Displays the ROM monitor environment variables. Verify that you correctly configured the ROM monitor environment variables. Downloads the system image specified by the ROM monitor environment variables.
Confirms that you want to continue with the TFTP download. Sample Output for Recovering the System Image tftpdnld. This section lists and describes some ROM monitor commands that can be used to troubleshoot router crashes and hangs. Most ROM monitor debug commands are functional only when the router crashes or hangs. If you enter a debug command when crash information is not available, the following error message appears:.
The ROM monitor commands in this section are all optional and can be entered in any order. A router or system crash is a situation in which the system detects an unrecoverable error and restarts itself. The errors that cause crashes are typically detected by processor hardware, which automatically branches to special error-handling code in the ROM monitor.
The ROM monitor identifies the error, prints a message, saves information about the failure, and restarts the system. For detailed information about troubleshooting crashes, see the Troubleshooting Router Crashes and Understanding Software-forced Crashes tech notes. A router or system hang is a situation in which the system does not respond to input at the console port or to queries sent from the network, such as Telnet and Simple Network Management Protocol SNMP.
Router hangs are discussed in detail in the Troubleshooting Router Hangs tech note. Under certain mis-configuration situations, it can be impossible to establish a console connection with the router due to a speed mismatch or other incompatibility.
The most obvious symptom is erroneous characters in the console display. If a ROM monitor failure of this type occurs, you may need to change a jumper setting on the motherboard so that the router can boot for troubleshooting. Procedures for accessing the motherboard and jumper locations are described in the installation of internal components section of the hardware installation document for your router.
The jumper forces the data rate to a known good value. Do not manually reload or power-cycle the router unless reloading or power cycling is required for troubleshooting a router crash.
The system reload or power-cycle can cause important information to be lost that is needed for determining the root cause of the problem. Optional Displays the CPU context at the time of the fault. Optional Displays an entire individual stack frame.
Optional Displays return information from the last booted system image. Optional Displays memory information, including:. Alternatively, using the meminfo -l command provides information on supported DRAM configurations for the router. You can also use the meminfo -l command to show the supported DRAM configurations for the router. The following is sample output for the command:. Displays a list of the files and directories in flash memory. Note Options to the boot command are -x load image but do not execute and -v verbose.
The following sections provide references related to using the ROM monitor. Break key sequence combinations for entering ROM monitor mode within the first 60 seconds of rebooting the router. Using the boot image Rx-boot to recover or upgrade the system image. Troubleshooting Router Crashes. Understanding Software-forced Crashes.
Troubleshooting Router Hangs. Technical Assistance Center TAC home page, containing 30, pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco. You must have an account at Cisco. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear.
Skip to content Skip to search Skip to footer. Book Contents Book Contents. Find Matches in This Book.
0コメント