You can add two kinds of segments: overlay-backed segments and VLAN-backed segments. When you create segments from Global Manager, only overlay-backed segments can span multiple locations.

You can view segments ports from Global Manager, but you cannot create or modify them. If you need to create or modify a segment port, you must do it from the Local Manager.


Do not change the gateway connectivity of a segment in Federation. Changing the gateway affects the span of the segment. If the span changes in such a way that it excludes a location, the segment is deleted on the excluded location. You must disconnect all VMs before you shrink the span of a segment.


Verify that each location has a default overlay transport zone configured. The default overlay transport zone is used to create global overlay segments. From each Local Manager, select System > Fabric > Transport Zones. Select an overlay transport zone, and click Actions > Set as Default Transport Zone.


  1. From your browser, log in with admin privileges to a Global Manager at https://<global-manager-ip-address>.
  2. Select Networking > Segments.
  3. Click Add Segment.
  4. Enter a name for the segment.
  5. Select the Connectivity, Traffic Type, and Locations for this segment.
    Table 1. Segment Configurations
    Connectivity Traffic Type Location and Transport Zone Details
    A global tier-0 or tier-1 gateway Overlay The Location section is populated with the following configurations:
    • the same locations that are configured on the attached gateway.
    • the default overlay transport zone for each location.
    Use this configuration to create a global overlay-backed segment connected to the selected global gateway.
    None VLAN You must select one location for this segment. You must also select a transport zone from that location. Use this configuration to create a global VLAN-backed segment to use for a tier-0 external interface.
    None Overlay No locations or transport zones can be selected. This segment is created on the Global Manager but is not realized in any Local Managers. You can attach it to a gateway later.

    Creating a VLAN-backed segment that is attached to a gateway is not supported.

  6. Enter the Gateway IP address of the subnet in a CIDR format. A segment can contain an IPv4 subnet, or an IPv6 subnet, or both.
    • If a segment is not connected to a gateway, subnet is optional.
    • If a segment is connected either to a tier-1 or tier-0 gateway, subnet is required.

    Subnets of one segment must not overlap with the subnets of other segments in your network. A segment is always associated with a single virtual network identifier (VNI) regardless of whether it is configured with one subnet, two subnets, or no subnet.

  7. Skip Set DHCP Config.
    Only static bindings are supported on a segment created from Global Manager. See Features and Configurations Supported in Federation.
  8. If the transport zone is of type VLAN, specify a list of VLAN IDs. If the transport zone is of type Overlay, and you want to support layer 2 bridging or guest VLAN tagging, specify a list of VLAN IDs or VLAN ranges
  9. (Optional) Select an uplink teaming policy for the segment.
    This drop-down menu displays the named teaming policies, if you have added them in the VLAN transport zone. If no uplink teaming policy is selected, the default teaming policy is used.
    • Named teaming policies are not applicable to overlay segments. Overlay segments always follow the default teaming policy.
    • For VLAN-backed segments, you have the flexibility to override the default teaming policy with a selected named teaming policy. This capability is provided so that you can steer the infrastructure traffic from the host to specific VLAN segments in the VLAN transport zone. Before adding the VLAN segment, ensure that the named teaming policy names are added in the VLAN transport zone.
  10. Click Save.
  11. To continue configuring the segment, click Yes when prompted.
  12. To select segment profiles, click Segment Profiles .
  13. To bind a static IP address to the MAC address of a VM on the segment, expand DHCP Static Bindings, and then click Set.
  14. Click Save.