Connect the new rack to inter-rack switches.
Ensure that the additional rack is powered down so that there is no connectivity between the first rack and and this rack.
The bring-up process must have been completed successfully on rack 1. The rack 1 Dashboard must be accessible and the SDDC Manager VMs must be powered on.
First rack ToR 1 port 49 to spine 1 port 1 on rack 2
First rack ToR 1 port 50 to spine 2 port 1 on rack 2
First rack ToR 2 port 49 to spine 1 port 2 on rack 2
First rack ToR 2 port 50 to spine 2 port 2 on rack 2
What to do next
Power on the additional rack.