Overview

A distributed virtual switch is like a template stored in vCenter. When you create a distributed virtual switch in vCenter, identical hidden standard vSwitches are created on all ESXi hosts added to VDS configuration. If you create a port group for VLAN on a distributed virtual switch, the same port group will be created on all vSwitches of ESXi hosts associated to that VDS. You only need to create a port group once, which is a significant advantage. A distributed virtual switch created in vCenter is a control plane (used for management) and hidden standard vSwitches on ESXi hosts are the IO plane (responsible for network operation).vCenter is a management system for vSphere environment, including a distributed virtual switch. If, for some reason, vCenter Server is unavailable, you will not be able to change VMware distributed switch configuration, including reconnecting virtual machines to other port groups. However, even if vCenter is offline, a network will remain in a working state because hidden standard vSwitches (the IO plane) are responsible for network operation. Keep in mind that vCenter cannot be connected to a distributed virtual switch.vCenter Distributed Switch VLANs - DportGroups will Connect to the Cisco L2 Switch Trunk through the already configured MS Loopback Adapters/VMNICs and attached to the ESXi Hosts. We Dont need to assign IP Addresses for the MS LoopBac Adapters in Windows11. Since While Configuring the DPortGroups We will be specifying the VLANs to get mapped and the VMs which are going to sit in those VLANs will have their Subnet Range, Which will match with the Cisco L2 Switch VLANs and SVIs(Switch Virtual Interfaces) Configured.

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