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Hi ivan aguilar my name is Johnnatan and I am part of the Small business Support community.
I've never heard of any management software as you need, though it would be very useful one, for now a way to make your settings is via a TFTP server, if you have some identical devices, you can copy it configuration, you can do this following these steps.
Once you have configure your devices, you can access them through the GUI.
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Johnnatan Rodriguez Miranda
Cisco network support engineer
Thanks Jonathan for your replay.
Your answer only was useful for backup issues but not for my problem.
Finally I needed to configure all APs one by one, and the issue was how to configure all at once, but as i have been is not possible.
With the release of version220.127.116.11 software you can create a cluster of up to 8 WAP321's. The feature is called Single Point. You create a cluster name and then configure a WAP with an IP and the cluster name, then it will join the cluster and get the configuration of the cluster. It also does channel planning within the cluster. Here is a paper on the feature
That doesn't get your 100 into one management entity, but you could create 13 clusters of 8 each which is better than managing them individually.