Access Point ROMMON Recovery AP: prompt Recovery
Here is the step by step procedure for 1140 series AP.. Its the same for almost 90% or all the Aironet product series
Image used
c1140-k9w7-tar.124-21a.JY.tar
Assuming We have the IP 192.168.100.101 assigned to the LAPTOP or the DESKTOP Ethernet port which runs as the TFTP server and assigning 192.168.100.100 as the IP to AP.
Make sure you have the TFTP server or download it from google (tftpd32.exe)
Using the CLI
Follow the steps below to reload the access point image using the CLI. When the access point begins to boot, you interrupt the boot process and use boot loader commands to load an image from a TFTP server to replace the image in the access point.
First of all, I would like to let you know that there is a problem if you don’t see the extensions of the files in your folders. The problem is that, when you rename the file, you just rename the name, and not the extension.
The solution for this is:
Go to the folder that contains the IOS image and go to the tools option in the window bar. Click on folder options
Go to the view tab and uncheck the option that says: “Hide file extensions for known file types”.
Note Your access point configuration is not changed when using the CLI to reload the image file.
Step 1 Open the CLI using a Telnet session or a connection to the access point console port.
Step 2 Reboot the access point by removing power and reapplying power.
Step 3 Let the access point boot until it begins to inflate the image. When you see these lines on the CLI, press Esc:
Loading "flash:/c1140-k9w7-tar.124-21a.JY.tar"
...###########################################################################
################################################################################
################################################################################
####################
Step 4 When the ap: command prompt appears, enter the set command to assign an IP address, subnet mask, and default gateway to the access point.
Note You must use upper-case characters when you enter the IP-ADDR, NETMASK, and DEFAULT_ROUTER options with the set command.
Your entries might look like this example:
ap: set IP_ADDR 192.168.100.100
ap: set NETMASK 255.255.255.0
ap: set DEFAULT_ROUTER 192.168.100.1
Step 5 Enter the tftp_init command to prepare the access point for TFTP.
ap: tftp_init
ap: ether_init
ap: flash_init
Step 6 Enter the tar command to load and inflate the new image from your TFTP server. The command must include this information:
•the -xtract option, which inflates the image when it is loaded
•the IP address of your TFTP server
•the directory on the TFTP server that contains the image
•the name of the image
•the destination for the image (the access point Flash)
Your entry might look like this example:
ap: tar -xtract tftp://192.168.100.101/images/c1140-k9w7-tar.124-21a.JY.tar flash:
Step 7 When the display becomes full the CLI pauses and displays --MORE--. Press the spacebar to continue.
extracting info (229 bytes)
c1140-k9w7-tar.124-21a.JY/ (directory) 0 (bytes)
c1140-k9w7-tar.124-21a.JY/html/ (directory) 0 (bytes)
c1140-k9w7-tar.124-21a.JY/html/level1/ (directory) 0 (bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/appsui.js (558 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/back.htm (205 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/cookies.js (5027 bytes).
extracting c1140-k9w7-tar.124-21a.JY/html/level1/forms.js (15704 bytes)...
extracting c1140-k9w7-tar.124-21a.JY/html/level1/sitewide.js (14621 bytes)...
extracting c1140-k9w7-tar.124-21a.JY/html/level1/config.js (2554 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/stylesheet.css (3215 bytes)
c1140-k9w7-tar.124-21a.JY/html/level1/images/ (directory) 0 (bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/images/ap_title_appname.gif (1422 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/images/apps_button_1st.gif (1171 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/images/apps_button_cbottom.gif (318 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/images/apps_button_current.gif (348 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/images/apps_button_last.gif (386 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/images/apps_button_last_filler.gif (327 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/images/apps_button_last_flat.gif (318 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/images/apps_button_nth.gif (1177 bytes)
extracting c1140-k9w7-tar.124-21a.JY/html/level1/images/apps_leftnav_dkgreen.gif (869 bytes)
-- MORE --
If you do not press the spacebar to continue, the process eventually times out and the access point stops inflating the image.
Step 8 Enter the set BOOT command to designate the new image as the image that the access point uses when it reboots. The access point creates a directory for the image that has the same name as the image, and you must include the directory in the command. Your entry might look like this example:
ap: set BOOT flash:/c1140-k9w7-tar.124-21a.JY/c1140-k9w7-tar.124-21a.JY
And save the boot variable
ap: sync <- not supported or needed on more recent AP models
Step 9 Enter the set command to check your bootloader entries.
ap: set
BOOT=flash:/c1140-k9w7-tar.124-21a.JY/c1140-k9w7-tar.124-21a.JY
DEFAULT_ROUTER=192.168.100.1
IP_ADDR=192.168.100.100
NETMASK=255.255.255.0
Step 10 Enter the boot command to reboot the access point. When the access point reboots, it loads the new image.
ap: boot
This will get the AP to Autonomous image AP# prompt after reload..
Drop a comment if we are facing any issues!!
