About an any version in WLC

[Holmesz]

What is RTOS Version , Bootloader Version and Emergency Image Version ?

How does it work and How can I upgrade them ?

Sorry , It's a simply question but I'm just a beginner.

Thanks.

[marce1000]

 - show sysinfo , on the controller, will return most of these parameters. Afraid that upgrading requires sufficient knowledge of a CISCO controller and understanding release notes and upgrade procedures (too).

 M.

[Sandeep Choudhary · Accepted solution]

Hi,

RTOS is a kernal file. It is mandatory to run the same version of the Real-Time Operating System (RTOS) on all controllers in the same mobility group.

The controller bootloader (ppcboot) stores a copy of the primary (active) image and the backup image. If the primary image is corrupted, you must use the bootloader to boot with the backup image.

The Emergency Image Version has kdump facility enabled to handle kernel panic dump collection.

What you nee dto upgrade:

1. Cisco Wireless Controller (WLC) Field Upgrade Software (FUS) is a special AES package that performs various system-related component upgrades. Cisco recommend that you install the FUS image to upgrade components such as the bootloader, emergency image, FPGA/MCU, and other firmware to their latest respective versions. (FYI: FUS upgrade takes about 40-45 min)

2. After FUS installation you should also upgarde the WLC to latest stable version.

Regards

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[Rasika Nayanajith]

What is the controller model you got ? Depend on the controller model you need to find the documentation for upgrade 

Upgrade procedure/release notes for normal software can be found here.

For 5500 series

https://www.cisco.com/c/en/us/support/wireless/5500-series-wireless-controllers/products-release-notes-list.html

For 8500 series

https://www.cisco.com/c/en/us/support/wireless/8500-series-wireless-controllers/products-release-notes-list.html

For 3504 series

https://www.cisco.com/c/en/us/support/wireless/3500-series-wireless-controllers/products-release-notes-list.html

For 2504 series

https://www.cisco.com/c/en/us/support/wireless/2500-series-wireless-controllers/products-release-notes-list.html

If you want to upgrade FUS (which include those bootloader, RTOS, emergency image version), you can find release notes here.

For 5508 series

https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/fus_rn_OL-31390-01.html

For 2504/8510/7500 series

https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/fus-rn-20.html

HTH

Rasika

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