6.5.1

If you migrate physical NICs, leave at least one active NIC that handles the traffic of port groups. For
example, if vmnic0 and vmnic1 handle the traffic of the VM Network port group, migrate vmnic0 and leave
vmnic1 connected to the group.
Removing Hosts from a vSphere Distributed Switch
Before you remove hosts from a distributed switch, you must migrate the network adapters that are in use
to a different switch.
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To add hosts to a different distributed switch, you can use the Add and Manage Hosts wizard to
migrate the network adapters on the hosts to the new switch all together. You can then remove the
hosts safely from their current distributed switch.
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To migrate host networking to standard switches, you must migrate the network adapters in stages.
For example, remove physical NICs on the hosts from the distributed switch by leaving one physical
NIC on every host connected to the switch to keep the network connectivity up. Next, attach the
physical NICs to the standard switches and migrate VMkernel adapters and virtual machine network
adapters to the switches. Lastly, migrate the physical NIC that you left connected to the distributed
switch to the standard switches.
Add Hosts to a vSphere Distributed Switch
To manage the networking of your vSphere environment by using a vSphere Distributed Switch, you must
associate hosts with the switch. You connect the physical NICs, VMkernel adapters, and virtual machine
network adapters of the hosts to the distributed switch.
Prerequisites
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Verify that enough uplinks are available on the distributed switch to assign to the physical NICs that
you want to connect to the switch.
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Verify that there is at least one distributed port group on the distributed switch.
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Verify that the distributed port group have active uplinks configured in its teaming and failover policy.
If you migrate or create VMkernel adapters for iSCSI, verify that the teaming and failover policy of the
target distributed port group meets the requirements for iSCSI:
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Verify that only one uplink is active, the standby list is empty, and the rest of the uplinks are unused.
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Verify that only one physical NIC per host is assigned to the active uplink.
Procedure
1 In the vSphere Web Client, navigate to the distributed switch.
2 From the Actions menu, select Add and Manage Hosts.
3 On the Select task page, select Add hosts, and click Next.
4 On the Select hosts page, click New hosts, select from the hosts in your data center, click OK, and
then click Next.
vSphere Networking
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