Re: ESXi 5.1 hosts randomly disconnects from vCenter

Hello Krede,

Your issue is related to HP. It is a known issue with HP Proliant servers. HP ProLiant servers configured with any of the HP NC55x Network Adapter may experience continuous pause frames when using firmware older than version 4.1.450.7. Continuous pause frames cause servers to lose network connectivity and block switch ports.

PLease log a call with HP and refer to the HP article below:

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03650833&jumpid=em_alerts_us-us_Jan13_xbu_all_all_2021934_141452_bladesystemproliantserversoptionsandaccessories_critical_006_0

Thanks

AG