There is a very strange thing happening here.
- my network setup; Fibre A and B NICs from the host are connected to the fabric switch which has trunk to core switch.
- Copper port is connected to copper switch which has separate trunk to core switch.
- I run continuous ping from a physical PC which has access to management network.
- when I shut the port from the switch going to Fibre A NIC on the host, management network fails over to Fibre B.
- I lost 5 pings and it comes back up.
- I re-enable link to Fibre A.
- when I shut the port from the switch going to Fibre B NIC on the host, management network fails over to Fibre B.
- I lost 5 pings and it comes back up.
- when I shut ports from the switch going to both Fibre A and B, management network does not fail over to copper.
- 100% ping lost from both PC ... AND Copper switch.
- When I re-enable Fibre A or B or both, then I can ping from PC AND Copper switch can ping the management IP again.
- I don't understand why the state of Fibre A and Fibre B could have such effect on the Copper port.
Here is how my teaming and failover is set up for Mgmt portgroup in the DVSwitch:
