To create a network across multiple organization virtual data centers, you first group the virtual data centers, then create a stretched network in the data center group. A data center group can have either a common egress point configuration or an egress point configuration for each network fault domain.
- Data center group
A group of up to four virtual data centers that are configured to share multiple egress points. A data center group can have one of the following egress points configurations:
Egress Points Configuration Type Description Common egress points configuration The data center group can be configured with one active egress point and one standby egress point. The two egress points are common to all participating virtual data centers across all network fault domains in the data center group. Egress points configuration per fault domain The data center group can be configured with one active egress point for each network fault domain in the data center group. Standby egresses cannot be created.
The participating organization virtual data centers can belong to different vCloud Director sites. See Configure and Manage Multisite Deployments.
- Network Fault Domain
- The network provider scope, typically representing the underlying vCenter Server instance with the associated NSX Manager.
- Egress point
- An edge gateway that connects a data center group or network fault domain to the Internet. The edge gateway must belong to a virtual data center from the data center group. BGP routes are configured on the edge gateway representing the egress point and the universal router of the virtual data center group or network fault domain. Existing routes on the edge gateway are not affected.
- Stretched network
- A layer 2 network that is stretched across all virtual data centers in a data center group. Can be IPv4 only.