cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
463
Views
0
Helpful
5
Replies

Cisco Maintenance Releases - Degrading Wireless LAN Controller

djgizmo250
Level 1
Level 1

We upgraded our Wireless LAN Controllers from 3.2.78.4 > 3.2.195.10 > 4.1.185.0 > 4.2.99.0.

We are implementing Vocera and they are requiring that we degrade the Wireless LAN Controllers to 4.2.112.0. Is it possible to degrade without losing any configuration or having any complications?

5 Replies 5

Rob Huffman
Hall of Fame
Hall of Fame

Hi Michael,

You can Downgrade the WLC Release Version, but in this case I believe 4.2.112.0 is actually the newest release in the 4.2 train (just released March 17), if you do have to downgrade a WLC Version be careful of this note;

Caution: If you require a downgrade from one release to another, you may 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.

Managing Controller Software and Configurations

http://www.cisco.com/en/US/docs/wireless/controller/4.1/configuration/guide/c41mfw.html

Cisco 4400 Series Wireless LAN Controllers Release Notes

http://www.cisco.com/en/US/products/ps6366/prod_release_notes_list.html

Hope this helps! Good luck with the Vocera, sounds like a pretty cool product :)

Rob

Ah yes! Sorry, it's been a long week with 12 hour shifts. Since we're upgrading from 4.2.99.0 to 4.2.112.0, should we worry about losing the configuration? I would think not, but it's better to ask. :)

What is the difference between the 4.2.112.0 and the 4.2.112.0 BOOT?

Thanks so much for you input!

Hi Michael,

No worries, I know the feeling ;-)

You should be fine in regards to losing the config (best to back it up just in case) With this upgrade you will require both files, 4.2.112.0 and 4.2.112.0 Boot. The Bootloader upgrade is required to mitigate the two bugs listed below;

Cisco requires you to install the Cisco Unified Wireless Network Controller Boot Software 4.2.112.0 ER.aes file on the following controllers: 4400 series, Cisco WiSM, and Catalyst 3750G Wireless LAN Controller Switch. It is optional on other controller platforms. This file resolves CSCso00774 and CSCso02733 and is necessary to ensure proper operation of the controller. If you do not install the ER.aes file, your controller does not obtain the fixes for these two defects.

--------------------------------------------------------------------------------

Note When you install the ER.aes file, a new bootloader file is also loaded. This is true for all controllers except the 2106 controller, for which the bootloader is not upgradable.

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

Note The ER .aes files are independent from the controller software files. You can run any controller software file with any ER.aes file. However, installing the latest boot software file (4.2.112.0 ER.aes) ensures that the boot software modifications in all of the previous and current boot software ER.aes files are installed.

http://www.cisco.com/en/US/docs/wireless/controller/release/notes/crn421120.html

Hope this helps!

Rob

I just upgraded to 4.2.112 and no issues.

-Scott
*** Please rate helpful posts ***

raun.williams
Level 3
Level 3

This is off topic, but am curious if your a hospital deploying Vocera and what kind of issues your running into, or any one else for that matter. Vocera has been deployed here 8months, and my personal opinion is that it's a piece o'crap. We have a very dense AP deployment in our ED area to handle all of the mobile devices, and they all work fine. Vocera on the other hand doesn't seem to do to well. What badge are you starting with? B or B/G?

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: