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Looking for a quicker way to predownload image onto 8540 WLC APs

CarrieRasak13520
Beginner
Beginner

I'm predownloading 8.10.171.0 onto our APs, using a 8540 WLC. There are over 2000 APs on the controller. I know you can predownload to every AP at once, and also individually by AP name. I was wondering if anyone knew of a wildcard to use as a catch all for a site name instead of listing each one individually. So for example, instead of sitename-ap-01, sitename-ap-02, sitename-ap-03 etc, is there like a sitename-ap-* that can be used to reduce the number of commands that need to be pasted?

I know you can also predownload to all on the GUI but did not see a way to go by site there either. I am willing to use either GUI or command line if anyone knows of a way to do this.

 

Thanks for any help or insight provided!

1 Accepted Solution

Accepted Solutions

I dont see an easy way to perform that. Actually, the easiest way is predownload all but since you want to do per site, I think you can take all the AP from one site in a spreadsheet and run on cli.

ap sitename-ap-1-01  predownload

ap sitename-ap-1-02 predownload

sa sitename-ap-1-03 predownload

 

Then run for other sites

 

ap sitename-ap-2-01  predownload

ap sitename-ap-2-02 predownload

sa sitename-ap-2-03 predownload

.

.

.

 

View solution in original post

7 Replies 7

I dont see an easy way to perform that. Actually, the easiest way is predownload all but since you want to do per site, I think you can take all the AP from one site in a spreadsheet and run on cli.

ap sitename-ap-1-01  predownload

ap sitename-ap-1-02 predownload

sa sitename-ap-1-03 predownload

 

Then run for other sites

 

ap sitename-ap-2-01  predownload

ap sitename-ap-2-02 predownload

sa sitename-ap-2-03 predownload

.

.

.

 

CarrieRasak13520
Beginner
Beginner

Yeah, I've been doing several sites at once but wasn't sure about predownloading 2000+ at the same time. The spreadsheet plan is probably the easiest way along with a concatenate formula so I can just edit the AP names. Thanks for your reply


@CarrieRasak13520 wrote:

Yeah, I've been doing several sites at once but wasn't sure about predownloading 2000+ at the same time. 


The 8540 has a (pre-)download "hard set" limit of 1000 APs. This means only 1000 APs will, on a first-come-first-serve basis, will download/pre-download the image.  

How many APs are there?

You can download 1000 at a given time, but believe me that this process will take much more time as WLC will be bogged down. If I am to do it I will do preferably 300-400 AP's at a given time. If you have a N+1 environment look at rolling AP upgrades where you upgrade one of the WLC's to new code and then select certain AP's in a certain location to move to  at a given point of time while others are serving clients (considering that you have redundant coverage at all places)

 

If your AP's are in Flex then you can make use of flex group master upgrade, here you have to manually trigger the predownload for each flex group name.

Cisco Wireless Controller Configuration Guide, Release 8.10 - FlexConnect AP Image Upgrades [Cisco Wireless LAN Controller Software] - Cisco

That's a great idea, thanks! We usually just do it after hours as it's not a 24/7 environment so they aren't being used in the late evenings/early night depending on your view point.

That makes sense. I've been doing around 250-350 at a time which seems to be fine. There are about 2100 APs on the controller.


@CarrieRasak13520 wrote:

That makes sense. I've been doing around 250-350 at a time which seems to be fine. There are about 2100 APs on the controller.


I have several controllers with >3500.  I used to (past tense) pre-download them 900 at a time.  No issue.  

However, I have found a way to "pre-download" the entire lot in one "big bang" and we have never encountered any problems.  

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