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4402 wlc upgrade from 4.1.171 to 4.2.130

james.randolph
Level 1
Level 1

This is my first wlc upgrade. I have 2 4402s with 12 AP1242s lwaps split between the two controllers. What's the best practice in upgrading the wireless lan controllers? Should I power one controller off while I upgrade the other or keep them both on during the upgrade process?

Thanks in advance.

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andrew.prince
Level 10
Level 10