I have an RFS600 controller with approximately 55 APs adopted to it. The software version is WiNG v5.9. The APs are a mixture of AP6522, AP6521, AP6532, and AP7632. The controller currently shows that 9 APs are down, but I can ping all 9 APs, and I have verified that all of them are functioning properly. I have been having this problem for a while and sometimes the "offline" APs will change to showing online, and then they will eventually go back to showing offline. This status change is usually after a power cycle, but a power cycle does not always have this effect. These APs are at different locations, and I was told by support to make sure that they were in their own RF Domains. I did this and saw no change. If anyone has seen this before, or has any ideas on how I might be able to fix this issue, any assistance would be appreciated.