Had a problem on a blade running esx 4 yesterday. The blade couldn't ping out and nothing could ping in. We tried all sorts of things including working with the firewall and INPUT/OUTPUT rules to no avail.
Re-installed ESX. Same problem again.
The internal bladecenter network switch was at fault. It was showing the port as GREEN and working, but when we removed the blade and tried it in another slot it worked fine.
We had to disable then enable the network port in the switch and then it worked fine. As usual, there was absolutely no error from the IBM kit and we had to find it by trial and error.
Sigh. Regular readers will know about IBM's lack of errors when there is one.
Thursday, 18 February 2010
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Update:
ReplyDeleteWe think this was caused by a broadcast storm shutting down the port administratively, but not telling us. We're reconfiguring the core to reduce the broadcast filter thresholds.