VMware Networking Community

Unable to Extend L2 ... Error Failed to get Opaque Network ... Any Ideas?

Have HCX up and all is green, diagnostics says all good, can even migrate a VM, but cannot extend L2 network.  Get the following error, have no idea what it's telling me.

Failed to get opaque network moref with logical switch id 176aa762-b5b3-49c6-9b68-e724d20394fd

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3 Replies
VMware Employee
VMware Employee

try to look for the object referring with that ID in the Managed Object Reference in vCenter thru this :

VMware Knowledge Base

the logical switch id number will be the one that you will be looking for a check if exists there, try to catch on logs as well using this doc:


on page 113, to get more idea on this failure.

hope this helps.

Community Manager
Community Manager

Hi trevordavismsft​ - good to see you here!   Just to let you know, there is a HCX​ specific place here in VMTN communities. 

Opaque networks are coming from NSX, with I would try to see what the network extension service is logging on the HCX Cloud app.log. 

Gabe Rosas (VMware HCX team at VMware)
Blog: hcx.design
LinkedIn: /in/gaberosas
Twitter: gabe_rosas

Thanks grosas​ ... when i  posted this didn't see an HCX group, glad to see one exists now 🙂

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