You want to boot using an alternate IOS image. To specify which IOS image the router should load next time it reboots, use the boot system command:. The sequence of the boot system commands is extremely important, as the router will attempt to load the IOS images in the order that they appear in the configuration file. The router can store as many IOS images in its flash memory as there is space to hold.
If there is only one file, it can safely assume that this must be the IOS image to load. However, if the router has several images in its flash storage, you need to specify which one it should load, or the router will simply select one. This is particularly true on routers that have additional flash memory in the form of PCMCIA cards, which can hold many files, not all of which are even necessarily IOS images.
With the default configuration register settings, the router will attempt to load the first accessible IOS image it finds in its flash storage. However, loading the first available image might not be appropriate.
For instance, in our last recipe we showed that, if you have space, you can download a new IOS image without erasing old images.
Recover an IR829 where the Embedded AP803 AP is Unable to Boot
In this case, you probably want the router to load the newer IOS image. And it would be better still if the router would try the new image first, and revert to the old image if the first one failed to load correctly for any reason.
The boot system command allows you to specify not only which IOS images to boot from, but also the order to try them in if it has trouble booting. In the example, this router will try a succession of three different IOS images. If they all fail, it will resort to using its boot ROM image. As we noted earlier, the sequence of the boot system commands is important since the router will attempt to load the IOS images in order of entry.
This means that the only way to add a new IOS image to load is to remove all of the old boot system commands and reenter them again in the order of preference. You can remove all of the boot system commands at once with the following command:. Once the old boot system commands have been removed, you can configure a new set in whatever order you require. Recipe 1. Table shows all of the different options for the boot system command. The last octet in the configuration register must be set to 2or the router will ignore the boot system commands completely.
For instance, if the last octet of the configuration register is set to 1the router will boot from ROM and ignore the boot system commands. The config-register command allows you to set the appropriate configuration register values:.
It will survive a reload without being saved. In fact, the new setting will not take effect until after the next reload:.When you upgrade the controller software, the software on the access points associated with the controller is also automatically upgraded.
How To Copy a System Image from One Device to Another
When an access point is loading software, each of its LEDs blinks in succession. Do not power down the controller or any access point during this process; otherwise, you might corrupt the software image. Upgrading a controller with a large number of access points can take as long as 30 minutes, depending on the size of your network.
However, with the increased number of concurrent access point upgrades supported in the controller software release, the upgrade time should be significantly reduced. The access points must remain powered, and the controller must not be reset during this time.
The following are some of the general restrictions that are applicable when upgrading the Cisco WLC software. For any release-specific restrictions, see the relevant release notes. Before upgrading or downgrading the controller image, you must close all open web pages and clear the browser cache. If you require a downgrade from one release to another, you might lose the configuration from your current release. The workaround is to reload the previous controller configuration files saved on the backup server or to reconfigure the controller.
You can upgrade or downgrade the controller software only between certain releases. In some instances, you must first install an intermediate release prior to upgrading to the latest software release. When you upgrade the controller to an intermediate software release, you must wait until all of the access points that are associated with the controller are upgraded to the intermediate release before you install the latest controller software.
In large networks, it can take some time to download the software on each access point. When you upgrade to the latest software release, the software on the access points associated with the controller is also automatically upgraded. We recommend that you install the latest software version available for maximum operational benefit. Installing the FUS image requires special attention because it installs some critical firmware. The FUS image is independent of the runtime image.
Ensure that your TFTP server supports files that are larger than the size of the controller software release.
If you are upgrading through the distribution system network port, the TFTP or FTP server can be on the same or a different subnet because the distribution system port is routable. When you plug a Cisco WLC into an AC power source, the bootup script and power-on self-test run to initialize the system.
During this time, you can press Esc to display the bootloader Boot Options Menu. The menu options for the Cisco and Flex WLCs are different than for other controller platforms. Enter 1 to run the current software, enter 2 to run the previous software, enter 4 on a Cisco WLCor enter 5 on another controller platform to run the current software and set the controller configuration to factory defaults.In the first two cases, the image on the AP is loaded and you can use the CLI to switch to another version if needed.
For this document, TFTP-server is Optionally, if the first attempt fails due to a corrupt flash: file system, you can run this command:. If all went well, you should now have a directory in flash: with the name of the image and the image in there:.
At this point, the image should be started and after some time you are presented with the prompt of the image of your choice. Skip to content Skip to footer. Available Languages. Download Options. Updated: March 31, Contents Introduction. Step 1. Step 3. IR config int wlan-ap0 The wlan-ap 0 interface is used for managing the embedded AP. Please use the "service-module wlan-ap 0 session" command to console into the embedded AP IR config-if ip addr Initiate the Copy and Extract of the Image.
Boot the Copied and Extracted Image. JI1" uncompressed and installed, entry point: 0x executing Stop MAC. Starting IOS Contributed by Cisco Engineers Jens Depuydt. Was this Document Helpful? Yes No Feedback.Backup and Restore Cisco Configuration file - Cisco backup Config
Related Cisco Community Discussions.The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared default configuration. If your network is live, make sure that you understand the potential impact of any command. The WLC, by default, maintains two images.
These images are the primary image and the backup image. The primary image is the active image used by the WLC while the backup image is used as a backup for the active image. The controller bootloader ppcboot stores a copy of the active primary image and the backup image. If the primary image becomes corrupted, you can use the bootloader to boot with the backup image. You can change the active image using either of the following two methods: During boot process or manually changing the active boot image.
Assuming that the controller has a valid backup image, reboot the controller. During the boot process on the controller, press Esc key to see additional options. You are prompted to choose an option from the following:.
ChooseOption 3: Change active boot image from the boot menu to set the backup image as the active boot image. The controller, when rebooted, boots with the new active image. Each controller can boot off the primary, previously loaded OS image or boot off the backup image, an OS image that was loaded earlier.
By default, the primary image on the controller is chosen as the active image. In order to remove or overwrite an image on the WLC, boot up the WLC with the image that you want to keep and perform an upgrade.
This way, the new image replaces the primary image. On the controller CLI, use the show boot command to view the primary and backup image present on the controller. Skip to content Skip to footer. Available Languages. Download Options. Updated: February 18, Contents Introduction.
Configure You can change the active image using either of the following two methods: During boot process or manually changing the active boot image. During Boot Process Assuming that the controller has a valid backup image, reboot the controller. You are prompted to choose an option from the following: Run primary image Run backup image Change active boot image Clear configuration Manually update images ChooseOption 3: Change active boot image from the boot menu to set the backup image as the active boot image.
Cisco bootloader. Cisco BootLoader Version : 8. Run primary image 8. Run backup image 8. Change active boot image 4. Clear configuration 5. Manually update images Enter selection: Note: Older versions of Cisco BootLoader might show slightly different Menu options. From the Image drop-down list, choose the image to be used as the active image. Click Apply. Save the configuration and reboot the controller. The controller, when rebooted, boots with the image that you chose.All Cisco Aironet The newer Access Point IOS is distributed as a tar file.
These tar files can be downloaded from cisco. The AP image names include the following components: platform - featureset -tar. Thanks for this information. And I am still not very clear on how this is to be accomplished.
Problem is that I have not really found a good or at least clear set of instructions in how to load this IOS into my AP, so I have not done that yet. And how does one recover from a, heaven forbid, faulty installation. What is the fallback from that. I'd appreciate any information you can point me to to help me better understand how I can update my AP. Because, right now, I am most certainly hesitant to even attempt an upgrade.
Could you also please update the section regarding archive, image name in flash and boot variable to relect the changes COS made in comparision to IOS? I would like to use this Access Point in Autonomous mode, is "ck9w7-tar. Set your ethernet NIC to use The AP uses Hold the reset button in whilst turning on the AP.
The light should start flashing and turn red after about 20 seconds. This takes about 5 minutes. AP can then be reconfigured using the config you hopefully saved before you started this process. Buy or Renew. Find A Community.If you have wlc then you have to use the wlc firmware version. If you want a newer version just upgrade the wlc. I believe is possible to download the firmware version. Try to use copy flash:firmware version tftp.
If we would have a AP with firmware 8. Server, so we could upgrade all APs with this firmware. Since this is Mobility Express, if you want to upgrade, why not promote that one AP as the master and then swap the image. Upon next reboot, the AP will use its backup image.
However, it will switch it back if it finds a suitable controller running different code. Now I would like to upload the firmware to an tftp- Server, so i can use the file for upgrading other aps. This is a production enviroment, so i want to feel certain, that everything works.
So i want to test in my office with reserve APs. Then I will put the image on a tftp Server and upgrade through the Webinterface of the Controller. Buy or Renew. Find A Community. We're here for you! Turn on suggestions.
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. George Hill. The last AP we got, had the firmware -version 8. The backup image is now 8. Is it possible to download the backup- image to a tftp- Server?
Thanks, George. Labels: Other Wireless-Mobility Topics.In order to change a Cisco WLC boot option, issue the config boot command. By default, the primary image on the controller will be chosen as the active image. When you upgrade the WLC with a new image, the WLC automatically writes the new image as the primary image and the previously existing primary image is written over the backup image. Here is an example:. In order to remove or overwrite an image on the WLC, boot up the WLC with the image that you want to keep and perform an upgrade.
This way, the new image replaces the primary image. Reference Links Buy or Renew. Find A Community. We're here for you! Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for. Search instead for. Did you mean:. Labels: Other Wireless-Mobility Topics. Rajesh Premachandran. Note: The previously existing backup image will be lost. Tags: configuration. Latest Contents. Created by patoberli on AM. I have access to some old i in Autonomous mode. My main AP at home is an Ubiquiti model though. Problem is, I don't have any Wi-Fi in the cellar, second problem, I don't ha Created by ccnaluna93 on AM. Hi, I'm studying wireless security fundamentals but I was wondering something about As far as I know port-based means security per-port, this makes sense with wire Created by Kelli Glass on PM.
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