VMware vCloud Networking and Security Upgrade to VMware NSX : Impact of Network Virtualization Technology : 3.1 Cisco Nexus 1000V
   
3.1 Cisco Nexus 1000V
vCloud Director supports the Cisco Nexus 1000V virtual distributed switch through the External Switch Provider feature of vShield Manager. The vShield API calls to deploy, manage, or delete virtual networks are then translated to Network Segmentation Manager APIs, which run on the Cisco Virtual Supervisor Module—the management component of Nexus 1000V switch. The logical networks can be VLAN-based or VXLAN-based.
Figure 5. vCloud Networking and Security Integration with External Switch Providers
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This functionality is no longer supported with VMware NSX. In such cases, you must first migrate from Cisco Nexus 1000V to VMware vSphere Distributed Switch™ and then subsequently migrate to VMware NSX.
The actual migration steps are out of scope for this document.