System Center Virtual Machine Manager
A family of System Center products that enable enterprise-wide management of virtual machines.
378 questions
Server 2022 Hyper-V Networking Issue
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Jayson C
0
Reputation points
I've been chasing an infuriating networking issue while trying to build a new cluster that I'm really starting to think is a bug. I've built 100+ 2016/2019 clusters so it's not my first rodeo.
What I am seeing.... I build the VM switch, attach VMNetworkAdapters for the Host OS, everything looks perfect, connectivity works all is well and magically on a reboot all of the VMNetworkAdapters will show a disconnected media state. What's even weirder, I can see the adapters under Get-NetAdapter but not Get-VMNetworkAdapter -ManagementOS .
Dell R6525
Broadcom 57416 10GbE Copper Adapters
I've been able to re-produce this over multiple hosts, multiple re-installs of the OS. At first I thought it was SCVMM weirdness applying the port profile, I can duplicate it with a simple standard switch as per below, without VMM in the mix.
New-VMSwitch "VS-Storage FD1" -MinimumBandwidthMode weight -NetAdapterName "MPIO1-10GbE" -AllowManagementOS $false
Add-VMNetworkAdapter -ManagementOS -name "Storage FD1" -SwitchName "VS-Storage FD1"
New-NetIPAddress -InterfaceAlias "vEthernet (Storage FD1)" -IPAddress 10.1.1.1 -PrefixLength 24 -Type Unicast
System Center Virtual Machine Manager
Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
12,521 questions
Hyper-V
Hyper-V
A Windows technology providing a hypervisor-based virtualization solution enabling customers to consolidate workloads onto a single server.
2,613 questions
Windows Network
Windows Network
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.Network: A group of devices that communicate either wirelessly or via a physical connection.
696 questions
{count} votes
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Jayson C 0 Reputation points
2023-09-12T15:17:36.6566667+00:00 Even more painful, the OS now things these adapters are physical adapters not virtual adapters and I can't easily remove them running on server core with no access to devmgmt.msc
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Eric Siron 1,256 Reputation points MVP2023-09-12T18:38:13.0666667+00:00 Working from the theory that this is a driver problem, does the OS recognize the 10G adapters without loading drivers? If so, I wonder if you can get it to work at all without drivers, just to confirm the suspicion. Can you use an older or newer driver pack? Does the Broadcom driver set now have special settings for Hyper-V adapters that don't work without explicit configuration?
Long shot, but Dell support might be able to help. They have the connections with Microsoft and Broadcom if this turns out to be a bug in the OS or the network drivers.
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