I recently built a Windows 2012 Hyper-V cluster with 5 nodes. The validation report shows “duplicate physical address” error (error text pasted below).
The hardware: HP BladeSystem – servers are BL460c blades, in a c7000 enclosure, connected to HP Virtual Connect switches.
Each server has 2 physcal nics, teamed in Windows. In the NIC Teaming console, I created the following Team Interfaces and assigned each a VLAN ID:
“Team1” (the default team)
“Team1 - VLAN 204 – Management”
“Team1 - VLAN 212 - 2012HB”
“Team1 - VLAN 211 -Exchange DAG Replication”
I also created 2 HV Virtual Switches. Neither one allows management interface to share. They are assigned to “Team1” and “Team1 - VLAN 211 -Exchange DAG Replication” respectively.
Therefore, in Network Connection, I see the 2 physical Ethernet nics, and 4 “virtual” nics. Only 2 of them have IP addresses assigned: Management and HB. These are the two that the validation wizard complains about.
The MAC address is not configurable in the NIC Teaming console, so I don’t see a way to resolve this error, except to use separate physical nics. I don’t want to do that because a) I would lose the benefits of the bandwidth aggregation that Virtual Connect provides, and b) When creating an Interface on a Team in Windows, it looks like it ALWAYS gives it the same MAC address, so that should be a supported configuration.
Everything works just fine, and there are no other errors or IP conflicts or anything else. But I really want to fix it because I don’t know what unknown problems this may be causing.
From the Cluster Validation report:
Found duplicate physical address 10-60-4B-A9-4A-30 on node Cluster201.OurDomain.local adapterTeam1 - VLAN 212 - 2012HB and node Cluster201.OurDomain.local adapterTeam1 - VLAN 204 - Management.
Found duplicate physical address F0-92-1C-13-3C-2C on node Cluster202.OurDomain.local adapterTeam1 - VLAN 212 - 2012HB and node Cluster202.OurDomain.local adapterTeam1 - VLAN 204 - Management.
Found duplicate physical address 68-B5-99-C1-7E-9C on node Cluster210.OurDomain.local adapterTeam1 - VLAN 212 - 2012HB and node Cluster210.OurDomain.local adapterTeam1 - VLAN 204 - Management.
Found duplicate physical address 3C-4A-92-DE-1E-74 on node Cluster211.OurDomain.local adapter VC-Team - VLAN 212 - 2012HB and node Cluster211.OurDomain.local adapterVC-Team - VLAN 204 - Management.
Found duplicate physical address 68-B5-99-C0-3D-50 on node Cluster212.OurDomain.local adapterTeam1 - VLAN 212 - 2012HB and node Cluster212.OurDomain.local adapterTeam1 - VLAN 204 - Management.
Thanks!
Dan