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20 Network Virtualization with Dell Infrastructure and VMware NSX | Version 1.2

Additionally, edge cluster(s) need to also be part of the transport zone as edge components (NSX

Perimeter Edge & DLR Control VM) that connect to and interact with the logical switches forward

traffic/interact with the physical infrastructure. The Distributed Logical Router Control VM sits on the edge

server and provides the control plane and configuration functions for the kernel-embedded DLR on the

vSphere ESXi hosts. A minimum of two edge servers allows for high availability in an active/active

configuration for edge devices. Scalability is achieved by each tenant DLR having a pair of active/active

DLR Control VMs and Perimeter Edge devices. Starting with NSX 6.1 release, ECMP is supported on both

the DLR and the Perimeter Edge. Up to eight active/active edges are possible per each tenant DLR.

Although not required, by having a separate cluster respectively for compute, management, and edge, it

allows for cluster-level configuration for each cluster without affecting hosts in other clusters. Also, it

allows for some predictability of Distributed Resource Scheduling (DRS) at the cluster-level; this can help

ensure for example that a NSX controller (installed as a VM on a host in the management cluster) does not

end up being vMotioned by DRS to a host where NSX Edge Services (contained within the edge cluster) is

running.

You can see separate edge, management, and compute (Production Site A & B) clusters in Figure 12

below. The servers that are part of the respective clusters are labeled in the prior diagram in Figure 10.

Note that each of these clusters has its own VDS switch. This also is not a requirement but is a design

choice so NSX bits and infrastructure VLANs are only installed/configured on the hosts/clusters they need

to be installed/configured on during the deployment process. There are different designs possible if

desired such as having one VDS span across all clusters, or having one VDS for edge and compute clusters

and another for the management cluster. For more detailed information see the Dell Infrastructure with

VMware NSX Deployment Guide.

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Dell Networking S6000 System Manual de usuario Pagina 20