Question Regarding AP Image Pre-download

Answered Question
Feb 15th, 2013

I'll get straight to the point on this one.  I have 84 LAP1242AG access points and a 5508 WLC.  Currently, the WLC has version 7.4.100.0 set as the primary image with version 7.0.116.0 as the active/default image.  Presently, all APs are running version 7.0.116.0.  I need to upgrade all 84 of the APs as well as the WLC.  Do I use the pre download primary or the pre download backup to push the new image (7.4.100.0) to the APs?  Or, should I just do it the brutal way and reboot the WLC and force the LAPs to rejoin and update the software during the boot process?  I would like to have this project completed by the 23rd.  Thanks!

Terence                  

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Correct Answer by Scott Fella about 1 year 1 month ago

Well the ap will download the new image fro the WLC is is associated to.  SO if the AP moves to another WLC, well the pre-download will not work.  Make sure the primary WLC is set to the WLC that you want to do the pre image download and disable master WLC on any WLC that has that enabled... Make sure the AP stays on the WLC.

Thanks,

Scott

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Correct Answer by Stephen Rodriguez about 1 year 2 months ago

it won't cause them to reload on there own.  Just schedule the WLC to reboot and it will take care of the AP.

HTH,
Steve

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Correct Answer by Stephen Rodriguez about 1 year 2 months ago

config ap image pre-download primary all

HTH,
Steve

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Correct Answer
Stephen Rodriguez Fri, 02/15/2013 - 10:03

config ap image pre-download primary all

HTH,
Steve

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tlockette Fri, 02/15/2013 - 10:05

Now will this cause the APs to reboot on their own automatically or will it just download the image to the APs until I manually reset them?

Correct Answer
Stephen Rodriguez Fri, 02/15/2013 - 10:06

it won't cause them to reload on there own.  Just schedule the WLC to reboot and it will take care of the AP.

HTH,
Steve

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tlockette Fri, 02/15/2013 - 10:08

Awesome!  Thanks for your quick responses!  Much appreciated!

tlockette Fri, 02/15/2013 - 10:16

One last question.  Should I see the new image somewhere in memory for the APs once the pre-download has completed?

Stephen Rodriguez Fri, 02/15/2013 - 10:27

you should yes.  just look at Wireless tab it will show you if both images are there as well.

HTH,
Steve

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tlockette Fri, 02/15/2013 - 10:30

This is what I was afraid of.  When I check it from both the GUI & CLI, I don't see the new image.  All I see is the current image.  I'm wondering if the pre-download is not supported by these APs.  I just tested on one of the APs and this is what I get:

(Cisco Controller) >show ap image scwp6ap09.shepctr.org

Total number of APs.............................. 84
Number of APs
        Initiated....................................... 0
        Predownloading.................................. 0
        Completed predownloading........................ 0
        Not Supported................................... 0
        Failed to Predownload........................... 0

                                                 Predownload     Predownload
AP Name            Primary Image  Backup Image   Status          Version
Next Retry Time  Retry Count
------------------ -------------- -------------- --------------- --------------
---------------- ------------
scwp6ap09.shepctr.org 7.0.116.0      0.0.0.0        None            None
   NA               NA

(Cisco Controller) >

Any thoughts/suggestions?

Stephen Rodriguez Fri, 02/15/2013 - 10:34

it doesn't look like it initiated. 

Completed predownloading........................ 0

so you did:

config ap image predownload primary all

after that you can do a

show ap image all

and see how many have started, are pending and are done.

HTH,
Steve

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Scott Fella Fri, 02/15/2013 - 15:29

I don't think you can pre download to those older APs due to the memory. I ran into that issue just a few weeks ago.

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Craiglebutt_2 Sun, 02/17/2013 - 01:08

Hi

I was speaking to a techie at a local uni, they have found away of upgrading the AP without rebooting it.
I don't know how this is possible.


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Leo Laohoo Sun, 02/17/2013 - 01:40
I was speaking to a techie at a local uni, they have found away of upgrading the AP without rebooting it.

I've been playing with Cisco IOS since 2005 and I have yet to see an appliance get it's IOS upgraded WITHOUT a reboot.

Let me know how it's done because I'm would sure like to know how I'm doing it wrong.

NOTE:  Maybe that techie is getting confused between "loading" an IOS into an appliance and upgrading an IOS.

Stephen Rodriguez Mon, 02/18/2013 - 05:55

the 1242 should have enough NV to be able to hold two images.  the 1130 and 1242 are in the list of supported AP, just teh 1230/1200 are not, and they aren't supported on later code anyway.

Now, the AP will reboot when the WLC goes down, so a reboot is needed but it doesn't have to happen immediately.

HTH,
Steve

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tlockette Tue, 02/19/2013 - 09:08

Here's what I get everyone when I attempt to predownload the image to the 1242:

(Cisco Controller) >config ap image predownload primary scs3ap01.shepctr.org


(Cisco Controller) >show ap image scs3ap01.shepctr.org

Total number of APs.............................. 85
Number of APs
        Initiated....................................... 0
        Predownloading.................................. 1
        Completed predownloading........................ 0
        Not Supported................................... 0
        Failed to Predownload........................... 0

                                                 Predownload     Predownload
AP Name            Primary Image  Backup Image   Status          Version
Next Retry Time  Retry Count
------------------ -------------- -------------- --------------- --------------
---------------- ------------
scs3ap01.shepctr.org 7.0.116.0      0.0.0.0        Predownloading  7.4.100.0
  NA               NA

(Cisco Controller) >

(Cisco Controller) >show ap image scs3ap01.shepctr.org

Total number of APs.............................. 85
Number of APs
        Initiated....................................... 0
        Predownloading.................................. 0
        Completed predownloading........................ 0
        Not Supported................................... 0
        Failed to Predownload........................... 0

                                                 Predownload     Predownload
AP Name            Primary Image  Backup Image   Status          Version
Next Retry Time  Retry Count
------------------ -------------- -------------- --------------- --------------
---------------- ------------
scs3ap01.shepctr.org 7.0.116.0      0.0.0.0        None            None
  NA               NA

(Cisco Controller) >

I've researched this and the 1242s should be able to support predownload.  Am starting to think I need to open a Cisco TAC case on this.

Scott Fella Tue, 02/19/2013 - 09:28

Do you have enough space in flash? Maybe you have multiple images already in flash causing your issue.

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tlockette Tue, 02/19/2013 - 11:30

I'll have to check but I read that the image pre-download will remove any backup image in flash and replace it with the new image.  Perhaps I read that incorrectly.  Oddly enough I was able to get my test AP to join our secondary controller after changing it to the master controller.  I tested another AP that was associated to the primary WLC and issued the pre-download command from the primary WLC.  This 2nd AP disassociated itself from the primary WLC and began downloading the software from the secondary controller.  Was that supposed to happen?  My understanding is that the AP would download the new image from the WLC that it's currently associated with and will only reboot when told.

Correct Answer
Scott Fella Tue, 02/19/2013 - 11:34

Well the ap will download the new image fro the WLC is is associated to.  SO if the AP moves to another WLC, well the pre-download will not work.  Make sure the primary WLC is set to the WLC that you want to do the pre image download and disable master WLC on any WLC that has that enabled... Make sure the AP stays on the WLC.

Thanks,

Scott

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tlockette Fri, 02/22/2013 - 06:33

Ok.  First let me say thanks for all the responses, suggestions, and hints.  I have all but 5 APs prepped for this upgrade.  For some reason, 5 of these APs will not take the new image when trying to predownload; it just stays stuck in downloading operational status.  Any ideas why this is happening?

Thanks,

Terence

Scott Fella Fri, 02/22/2013 - 06:39

I would just say forget about the press download for 5 APs. Just switch the WLC code and let those 5 download it that way.

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tlockette Fri, 02/22/2013 - 06:44

That's what I was gonna do but I'm afraid that the AP may never actually upgrade.  The reason why I say that is because when I force the AP to use the secondary WLC that has the new image, it still just sits there in the downloading op status.  So even without pre downloading, it just hangs and I get the following error in the logs:

*osapiReaper: Feb 22 14:16:23.522: #OSAPI-0-RAD_SW_UPGRADE: osapi_task.c:5119 System has been upgrading Radio SW for more than 30 minutes.

Again, I stress, that this is without predownloading the image to these APs but rather forcing them to join our backup WLC and automatically downloading the software before registering to it.

tlockette Sat, 02/23/2013 - 09:16

Thanks everyohe who gave their support and input.  I have successfully upgraded our primary WLC and all LAPs have successfully registered.  I did run into problems with 3 of the APs however.  Two of them had to be manually configured from WLC before they registered and the last one actually had to be replaced with a spare I had.  Thanks again!

Terence

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