Considering there is no backup ..
You need to recreate new dvSwitch config from scratch, connect all your hosts to the new dvSwitch and then migrate physical nics, VMs and vmkernel ports to the new one.
Current ESXi host dv Switch configuration matters downtime, if you dont have multiple pNIC for uplink redundancy
To avoid Switch rollback and host to vcenter connectivity loss you should move the pNIC and your management vmkernel port at the same time. If the new dvSwitch is set up correctly, this should work.
* Right click on your new dvswitch and select "Add and Manage Hosts"
* Select "Manage Host Networking"
* Select the host you're working on
* Tick "manage physical adapters" and "manage vmkernel adapters"
* Select the physical adapter you want to connect to uplink port on your new dvSwitch and click on "Assign uplink"
* Select your existing vmkernel port used for management (now connected to your ghost switch), click on "Assign port group" and choose the portgroup you have created on your new dvswitch for management traffic
* If everything works fine move the remaining physical adapters, vmkernel ports and virtual machines on that host to your new dvswitch.
* Right click on your new dvswitch - settings - export configuration for switch configuration backup
Thanks
Vysakh Nair
Blog:- https://www.vxpert.in
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Vysakh Nair
Blog - https://www.vxpert.in
