Cannot create external network in vCD 9

[heaveaxy]

Hello there,

I created VDC provider corresponding the docs, now I creating External network and vCloud Director shows me following error:

[ e24a585b-501a-46fa-97b0-65092a175af8 ] Cannot create External Network. Existing network backings in use or is an uplink.  Possible solution would be to configure overlapping networks (i.e. if you wish to use the same VLAN ID).

In NSX manger I have created one Edge Services Gateway with one port connected as uplink to Distributed port group (physical network access) and another port connected to Logical switch as internal interface. This Logical switch I have selected in vSphere Network section while creating External Network.

Please, how to troubleshoot this issue?

vCloud Director 9.0.0.3

vCenter Server 6.5

NSX 6.4.4

[paluszekd · Accepted solution]

Go to System -> Administration -> General

Check the box for Allow Overlapping External Networks

You might have the same VLAN ID on your ESG uplink interface. Cheers.