NSX-T 3.0- Tier 0 - external interface - VLAN issue

[rajkumar49]

hi,

I am new to VMware NSX-T.  we are trying to set up the single ESXi host NSX-T 3.0 setup. we are getting the below error while setting up the Tier 0 gateway.

Error :

The vlan-ids:0 of attaching LS conflicts with another VLAN sharing same underlying Physical devices

Screenshots:

[Sreec · Accepted solution]

is your overlay and transit network using same VLAN-ID ? You should correct that , or use unique NVDS for Overlay&Edge and connect to the respective portgroup.

[rajkumar49]

thanks for the answer, we created two NVDS  in the edge transport node. one for Overlay and another for VLAN uplink. this solved the issue.

[calvin_wong]

I ran into the same issues, is there any screen shot for how to connect to respective portgroup? suppose i was using the same interface and vlan ... is that possible?

[Bilal041987]

I have created two nVDS, one for overlay and other one for VLAN then NSX allowed me to use same vlan for external uplink but when I created an overlay segment and assign it to a VM, tunnel goes down. Can you please help?