Only one host in cluster could not reach isolation address

[songphonj]

Hi

In my envelopment system in cluster there are 3 host using ESXi4.0 and vCenter 4.1.

all host install on cisco UCS.

Just only one host have a problem, other work fine no error about "Could not reach isolation"

Has anyone seen a similar problem ?? and how to do it?

Now currently status, I just reboot the host and now seen maybe work.

Thank you

Mod

[weinstein5]

Welcome to the Community - the most common cause for that error is that the host is unable to reach the isolation address that HA uses ti determine if the hoist has becpme isolated is that there is an issue on the network - buts it sounds like it is resolve d-

[songphonj]

Thank you weinstein5

I think the problem is not from network because another hosts not receive the effects.

I expect the problem seems to come from "HA functions" because after reboot that host and re-enabling HA on clusters two day ago, the problem don't occur again.

I would like to know how to find the root cause come from HA or not and how to prevent the problem.