Configure a vMotion interface using vSphere Client

1. Log into the vCenter Server using vSphere Client.
2. Click to select the host.
3. Click the Configuration tab.
4. Click Networking under Hardware.
5. Click Add Networking.
6. Select VMkernel and click Next.
7. Select the existing vSwitch, or select Create a vSphere standard switch to create a new vSwitch and click Next.
8. Enter a name in the Network Label to identify the network that vMotion uses.
9. Select a VLAN ID from the VLAN ID (Optional) dropdown if applicable.
10. Select Use this port group for vMotion and click Next.
11. Enter the IP address and Subnet Mask of the host's vMotion Interface. (Note: it is not recommended to override the default gateway)
12. Click Next, then click Finish.
    
    Note: For multiple hosts, repeat steps 2 to 12. Use a unique IP address for each host vMotion interface.

Configure a vMotion interface using vSphere Web Client:

vSphere vMotion Networking Requirements

• Migration with vMotion requires a correctly configured vMotion network interface on both source and target hosts.
• Configure each host with at least one vMotion network interface. To ensure secure data transfer, the vMotion network must be a secure network, accessible only to trusted parties. Because vMotion performance improves significantly with additional bandwidth, dedicate at minimum a physical 1 Gigabit Ethernet (GigE) NIC to vMotion. As a best practice, provision at least one additional physical NIC as a failover NIC.

In vSphere 5 and later you can configure multiple vMotion interfaces for greater throughput. For more information, see Multiple-NIC vMotion in vSphere 5 (2007467).
For a full list of requirements, see vSphere vMotion Networking Requirements in the vCenter Server and Host Management Guide.

Recommended vMotion networking best practices

• Use one dedicated Gigabit Ethernet adapter for vMotion.
• If there are only 2 Ethernet adapters available:
  • For best security, dedicate the Gigabit Ethernet adapter to vMotion, and use VLANs to divide the virtual machine and management traffic on the other adapter.
  • For best availability, combine both adapters into a bond, and use VLANs to divide traffic into networks: one or more for virtual machine traffic and one for vMotion.
• Keep the vMotion interfaces on a dedicated vMotion network. You can use VLANs to segment a single physical network or the preferred option is to use separate physical networks.

For more information, see Networking Best Practices section in the VMware vSphere 5.5 Storage Guide.

Commonly overlooked vMotion requirements

• Ensure that virtual machines have access to the same subnets on source and destination hosts.
• If you are using standard switches for networking, ensure that the network labels used for virtual machine port groups are consistent across hosts.
• During a migration with vMotion, vCenter Server assigns virtual machines to port groups. Configure hosts for vMotion with shared storage to ensure that virtual machines are accessible to both source and target hosts.
• If you use vMotion to migrate virtual machines with raw device mapping (RDM) files, ensure that the LUN IDs for RDMs are consistent across all participating hosts.

Multiple-NIC vMotion in vSphere
ESXi/ESX ホストでの VMkernel ポートの作成と vMotion の有効化
在 ESXi/ESX 主机上创建 VMkernel 端口并启用 vMotion
Configuring vSwitch or vNetwork Distributed Switch from the command line in ESXi/ESX
Configuring a VMkernel port and enable vMotion via command line