5508 as HA active controller - Failed to set Redundancy Mode

Question

I am trying to setup HA in our lab
Both 5508s are running 7.4.100.0.
The primary/active controller is configured as follows
management IP:                         144.249.185.33
Redundancy-Management:        144.249.185.69
Redundancy Port:                       169.254.185.69
The standby controller was purchased as an HA SKU is configured as follows
management IP:                         144.249.185.3
Redundancy-Management:        144.249.185.70
Redundancy Port:                       169.254.185.70
When we set the standby AP SSO state to enabled, it reboots, etc and all seems good.
When we set the primary AP SSO state to enabled, it doesn't let us.  All it does is give us a pop up window via the web gui that says:
"Failed to set Redundancy Mode"
Not very meaningful.

Answer 1

v7.4.100.60 is recommended for HA unless you get a TAC version.  There are some stability issues that have been fixed in the .60 version and if your planing on testing in a lab, I would suggest you use that code.  You would need to disable AP SSO and upgrade the WLC's.
Thanks,
Scott
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