NSXT uses a protocol called Geneve to encapsulate traffic and this is similar to VXLAN. It requires a jumbo frame ( MTU > 1600 )
It stands for NSX VDS ( Distributed Switch).
We need to put a switch on the host somehow, there are two ways to do it.
- vSphere < 7.0 = N-VDS ( needs a spare nic )
- vSphere > 7.0+ = Converged vDS ( can use same adapters as our vDS uplinks )
N-VDS Option
NVDS is a distributed switch created by NSX-T that is fully controlled by NSX-T, so we won’t be able to modify this switch similar to how we modify VDS portgroups. Any changes will need to be done by NSX-T so this switch remains in full control via the NSX-T.
NVDS requires a dedicated nic in vSphere 6.7 and on version 7.0 or newer we go for a converged VDS option. Converged would mean we can use the existing uplinks on the vDS and create NSX switches on top of it without stealing an uplink from the distributed switch.
Converged Option
We prep host, instead of NVDS we select the Converged option so our NSX sits on top of the existing vDS.
