Yes it is possible, you need to use the redundancy port so it has to be layer 2 or if they are in the same rack just connect the two ports directly together.
Mikey Boy: thanks for your answer.
We did that. But the AP SSO is never synchronized. We follow the step-by-step document.
Under what scenarios could the configuration fail?
Hi, are both WLC running the same code levels? What is the output of:
Show redundancy summary
Show redundancy detail