A virtual distributed switch can be associated with one or more physical ports on a host. To build the association, the following requirements must be met:
Network ports associated with the same virtual distributed switch have Layer 2 reachability.
The port usage must be Not passthrough. A port used for SR-IOV passthrough or PCI passthrough cannot be associated with a virtual distributed switch. If you need to associate the port, first change the use of the port to Not passthrough. For details, see the Switching the port usage section.
When the host associated with the virtual distributed switch contains at least two network ports, you need to configure the port bonding mode. Additionally, if the network port uses the active-backup bonding mode, ensure that the active ports in all associated hosts are connected to the same physical switch or stackable switch. Otherwise, the host network will not be able to communicate normally.
VM networks in the same cluster are not allowed to have duplicate names.
The VLAN IDs of two VM networks associated with the same virtual distributed switch can be duplicated. You can enable the QoS policy for VM networks to meet the traffic usage requirements.
When planning ports for a VM network, the administrator can configure the ports according to the port condition and the server room network. If there are sufficient 10 Gigabit ports, it is recommended that the virtual distributed switch where the VM network resides use 10 Gigabit ports to speed up the data transmission speed between virtual machines.
The virtual distributed switch where the management network is located needs to be connected to at least one Gigabit network port on each host.
The virtual distributed switch where the storage network is located needs to be connected to at least one 10 Gigabit port on each host.
The virtual distributed switch, where the migration network, access network, VPC system network, and mirroring egress network are located, needs to be connected to at least one port on each host.
The management network, storage network, migration network, access network, VPC system network, mirroring egress network, and VM network can each occupy a virtual distributed switch, or they can share a virtual distributed switch. However, if the storage network has RDMA enabled, it cannot share a virtual distributed switch with other system networks.
It is recommended that you associate the VM networks and storage network with different virtual distributed switches.
