Hi.
Thanks to Google I found this post. Cause I have exactly the same problem with ESX 3.5.123630 (Update3) and NEC Servers Express5800/120.
I enabled Jumbo frames. Dont know if that's anything t do with it... Also the RED warning, saying in front of the ESX server name. Behind the name it says "(standby mode)" but in Summary tab, it shows "HA agent disabled on esx3.blabla.com in cluster..."And I have a RED alarm relative to "Host connection state".
It appeared once yesterday that I had a blue moon logo in front of it, then it disappeared and was replaced by the red warning.
I think this might be some kind of a bug.
Thanks for any help once might provide here,
Mini.
BTW, how can I obtain a report from my esx server or virtual infrastructure so you clever guru guys can spot the cause of this bad situation ?