I have a 2 four host HP servers running ESXI with dual 10gbe nic cards hp 535t. They are connected to to a stack of cisco 9300s with 10gbe copper ports, and are in separate rooms. The server I'm having issues with houses hosts 1-4. The 10gbe connections to the hosts flap every 4 hours. I tried wiping the switches and tried every possible troubleshooting step with them and they always flap on the exact schedule. I hooked up a different stack of 9300s with 1gb SFPs and had zero issues. I moved the stack to the second room and it had zero issues when connected to hosts 5-8. so it appears to be either an issue with with HP hardware or Vmware. The ilo ports never flap and they are the only 1gb connections. There is nothing in any logs that I can find that sheds light on the issue. The ports just go down and come back a few seconds later. I currently have hosts 1-3 down as I was trying to isolate to an individual host. So in the attached picture you'll just see the connections for host four. I also tried capturing traffic using span from one of the host connections and it didn't show any issues. The ports just go down and come back up. Any help with this issue would be greatly appreciated.
