https://community.cisco.com/t5/wireless/wlc-upgrade/m-p/2969145#M39281 <P>I have WLC 5508 with HA and&nbsp;having &nbsp;Software version 8.0.121.0, and I would to upgrade the same to Software Version 8.2.110.0, what will be the impact to the Controllers and AP's.</P> Mon, 05 Jul 2021 12:36:38 GMT Irshad Mohammed Hussain 2021-07-05T12:36:38Z https://community.cisco.com/t5/wireless/wlc-upgrade/m-p/2969145#M39281 <P>I have WLC 5508 with HA and&nbsp;having &nbsp;Software version 8.0.121.0, and I would to upgrade the same to Software Version 8.2.110.0, what will be the impact to the Controllers and AP's.</P> Mon, 05 Jul 2021 12:36:38 GMT https://community.cisco.com/t5/wireless/wlc-upgrade/m-p/2969145#M39281 Irshad Mohammed Hussain 2021-07-05T12:36:38Z https://community.cisco.com/t5/wireless/wlc-upgrade/m-p/2969146#M39282 <P>It will take, approximately, 5 minutes to reboot the controller and the AP. &nbsp;</P> <P></P> <P>It will take the AP longer than 5 minutes if pre-download is not enabled. &nbsp;During the time when the AP joins the controller &amp; then downloads the firmware, the AP will NOT be servicing any wireless clients.</P> Thu, 11 Aug 2016 10:54:06 GMT https://community.cisco.com/t5/wireless/wlc-upgrade/m-p/2969146#M39282 Leo Laohoo 2016-08-11T10:54:06Z