Design Option

Pros

Cons

No Edge Cluster

Simplicity

Ideal for traditional networking architectures (three tier)

VLANs trunked to all provider VDC hosts limit scale and extend network failure domain

Combined Edge/Compute Cluster

Spine-leaf network architecture support

Scale

Deployement simplicity

Administration overhead around capacity management of Edge/Compute cluster

Four network uplinks (for two vDS switches) needed in order to be able live migrate workloads away from Edge/Compute cluster

Dedicated Edge Cluster

Spine-leaf network architecture support

Support for provider managed Edge Gateway

Provider edge could become a bottleneck in large deployments

Dedicated Edge Cluster with ECMP Edges

Spine-leaf network architecture support

Highly scalable

Support for additional provider managed NSX features

Deployment complexity