@MartynThomas -- Thanks for your post.
We recently experienced a similar issue. In our case our BL460G8 blades abruptly disconnected both ethernet and storage networks serviced by the Emulex OneConnect chipset (NC554FLB).
Our environment regained stability after applying the following:
esxcli software vib install -d /tmp/VMW-ESX-5.5.0-elxnet-10.4.255.13-offline_bundle-2555693.zip ## Emulex OneConnect Network Driver v10.4.255.13
esxcli software vib install -d /tmp/VMW-ESX-5.5.0-lpfc-10.2.455.0-offline_bundle-2254453.zip ## Emulex OneConnect FC Driver v10.2.455.0
esxcli software vib install -d /tmp/hp-esxi5.5uX-bundle-2.2-17.zip ## HP ESXi5.5 bundle
(reboot)
Then
./CP025747.scexe ## Emulex OneConnect Firmware v10.2.477.23
(reboot)
NOTE: The HP prescribed ESX5.5 recipie specifies the elxnet v10.2.445.0 driver. In our experience this has not resolved the issue. We are stable with elxnet 10.4.255.13.
We're in dialog with L3 (VMW, HDS, HP) to triage further.
Hope this helps someone.
Adam Kupsta.
