Hey guys I got a weird one here. vCenter 4.1 & ESXi 4.1.0 build 502767. The vCenter service will crash then the vCenter VM is rebooted. After reboot some hosts are disconnected and cannot be pinged. From the DCUI I cannot ping out to DNS/vCenter/Gateway etc, restarting the mangement network or the remote management agents does not resolve the issue. The only way to resolve the problem is to forceably reboot the host which kills all the VMs that were on it.
Any help is much appreciated!