Microsoft Networking best practice advice to run LiveMigration traffic on separate VLAN. Personally I think this is very good idea to isolate different traffic types (management, VM, SVC, LiveMigration, storage) from each other.
In example below I will show how to Configure LiveMigration network on Hyper-V running on Nutanix. I will use PowerShell, of course 
First things first. Let me explain Hyper-V networking concept on Nutanix. After deployment, you can find two Logical Switches – InternalSwitch and ExternalSwitch. Internal switch is used only for local CVM to local Hyper-V host communication, has no physical uplinks bounded . ExternalSwitch – as name states – is used for external communication between CVMs, Hyper-V hosts, virtual machine traffic, LiveMigration. ExternalSwitch has LBFO team with usually two 10GbE physical NICs attached.
[c03cadhv-2]: PS> Get-NetLbfoTeam
Name : NetAdapterTeam
Members : {Ethernet 3, Ethernet 4}
TeamNics : NetAdapterTeam
TeamingMode : SwitchIndependent
LoadBalancingAlgorithm : Dynamic
Status : Degraded
[c03cadhv-2]: PS > Get-NetLbfoTeamMember
Name : Ethernet 3
InterfaceDescription : Intel(R) 82599 10 Gigabit Dual Port Network Connection
Team : NetAdapterTeam
AdministrativeMode : Active
OperationalStatus : Active
TransmitLinkSpeed(Gbps) : 10
ReceiveLinkSpeed(Gbps) : 10
FailureReason : NoFailure
Name : Ethernet 4
InterfaceDescription : Intel(R) 82599 10 Gigabit Dual Port Network Connection #2
Team : NetAdapterTeam
AdministrativeMode : Active
OperationalStatus : Failed
TransmitLinkSpeed(Mbps) : 0
ReceiveLinkSpeed(Mbps) : 0
FailureReason : PhysicalMediaDisconnected
[c03cadhv-2]: PS >Run Poweshell on hyper-V host – locally or remotely and list all the switches
[c03cadhv-1]: PS > Get-VMNetworkAdapter -ManagementOS
Name IsManagementOs VMName SwitchName MacAddress Status IPAddresses
---- -------------- ------ ---------- ---------- ------ -----------
InternalSwitch True InternalSwitch 00155D000000 {Ok}
ExternalSwitch True ExternalSwitch 0CC47ABC18A1 {Ok}Add new one for LiveMigration
[c03cadhv-1]: PS > Add-VMNetworkAdapter -ManagementOS -Name LiveMigration -SwitchName ExternalSwitch
List again all switches
[c03cadhv-1]: PS > Get-VMNetworkAdapter -ManagementOS
Name IsManagementOs VMName SwitchName MacAddress Status IPAddresses
---- -------------- ------ ---------- ---------- ------ -----------
LiveMigration True ExternalSwitch 00155DEC5401 {Ok}
InternalSwitch True InternalSwitch 00155D000000 {Ok}
ExternalSwitch True ExternalSwitch 0CC47ABC18A1 {Ok}Assign VLAN to new LiveMigration switch
[c03cadhv-1]: PS > Set-VMNetworkAdapterVlan -ManagementOS -VMNetworkAdapterName LiveMigration -Access -VlanId 100 [c03cadhv-1]: PS >
List all network adapters on hyper-v host, check if LiveMigration adapter is on the list.
[c03cadhv-1]: PS > Get-NetAdapter Name InterfaceDescription ifIndex Status MacAddress LinkSpeed ---- -------------------- ------- ------ ---------- --------- vEthernet (LiveMigration) Hyper-V Virtual Ethernet Adapter #4 58 Up 00-15-5D-EC-54-01 10 Gbps vEthernet (InternalSwi... Hyper-V Virtual Ethernet Adapter #3 25 Up 00-15-5D-00-00-00 10 Gbps vEthernet (ExternalSwi... Hyper-V Virtual Ethernet Adapter #2 23 Up 0C-C4-7A-BC-18-A1 10 Gbps NetAdapterTeam Microsoft Network Adapter Multiplexo... 20 Up 0C-C4-7A-BC-18-A1 10 Gbps Ethernet 3 Intel(R) I350 Gigabit Network Conn...#2 14 Not Present 0C-C4-7A-64-7D-BD 0 bps Ethernet 2 Intel(R) I350 Gigabit Network Connec... 13 Not Present 0C-C4-7A-64-7D-BC 0 bps Ethernet 5 Intel(R) 82599 10 Gigabit Dual Por...#2 16 Up 0C-C4-7A-BC-18-A1 10 Gbps Ethernet 4 Intel(R) 82599 10 Gigabit Dual Port ... 15 Disconnected 0C-C4-7A-BC-18-A0 0 bps
Rename vEthernet (LiveMigration) to something more user friendly
[c03cadhv-1]: PS > Rename-NetAdapter "vEthernet (LiveMigration)" -NewName LiveMigration
Assign IP address and subnet to LiveMigration adapter
[c03cadhv-1]: PS > New-NetIPAddress -InterfaceAlias LiveMigration -IPAddress 10.10.10.10 -PrefixLength 24 -Confirm:$false IPAddress : 10.10.10.10 InterfaceIndex : 58 InterfaceAlias : LiveMigration AddressFamily : IPv4 Type : Unicast PrefixLength : 24 PrefixOrigin : Manual SuffixOrigin : Manual AddressState : Tentative ValidLifetime : Infinite ([TimeSpan]::MaxValue) PreferredLifetime : Infinite ([TimeSpan]::MaxValue) SkipAsSource : False PolicyStore : ActiveStore IPAddress : 10.10.10.10 InterfaceIndex : 58 InterfaceAlias : LiveMigration AddressFamily : IPv4 Type : Unicast PrefixLength : 24 PrefixOrigin : Manual SuffixOrigin : Manual AddressState : Invalid ValidLifetime : Infinite ([TimeSpan]::MaxValue) PreferredLifetime : Infinite ([TimeSpan]::MaxValue) SkipAsSource : False PolicyStore : PersistentStore [c03cadhv-1]: PS C:\Users\artur.krzywdz\Documents>
That’s it. Repeat it on every Hyper-V host in the cluster. When is done, start Failover cluster manager and check if new network appear in network resources
New network is visible
Right click on failover cluster –> LiveMigration networks and choose new network as the one dedicated for LiveMigration traffic only
Choose dedicated network for LiveMigration traffic
About Artur Krzywdzinski
Artur is Consulting Architect at Nutanix. He has been using, designing and deploying VMware based solutions since 2005 and Microsoft since 2012. He specialize in designing and implementing private and hybrid cloud solution based on VMware and Microsoft software stacks, datacenter migrations and transformation, disaster avoidance. Artur has been in IT industry since 1999 and consulting since 2008. Artur holds VMware Certified Design Expert certification (VCDX #077).
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