Own two 5508 controllers operating in HA SSO. Became necessary to accomplish the change of addressing these. Both addresses will remain the same subnet, however the question arose whether to undo the HA configurations or is there a way to alter these addresses without removing these settings.
Leo is correct... Disable AP SSO and reconfigure the management IP address for both. You can change the AP's high availability for the primary WLC with the new IP address also before your break AP SSO and change the IP address. This way the AP has the info.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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