Help — Virtual lab deployment fails with add virtual switch error

Martin Hollingsworth

When deploying a virtual lab with backup_server, the isolated network creation fails and the deployment aborts. Relevant log:

2025/12/04 16:44:11 backup_server [ERROR:3154#Vmware add virtual switch error]: add virtual switch error. vmware/vmware_backup_task.cpp:12687:DeployIsolateNetwork
2025/12/04 16:44:11 backup_server [ERROR:3154#Vmware add virtual switch error]: deploy isolate network error. vmware/vmware_backup_task.cpp:12620:DeployVirtualLabTask
2025/12/04 16:44:11 backup_server [DEBUG]: deploy isolated network and proxy vm failed !!!
2025/12/04 16:44:11 backup_server [ERROR:4967#vmware deploy sure backup virtual lab nertwork error]: deploy virtual lab error. vmware/vmware_backup_task.cpp:12580:DoDeployVirtualLab
2025/12/04 16:44:12 backup_server [ERROR:4967#vmware deploy sure backup virtual lab nertwork error]: do deploy virtual lab error. backup_server_task.cpp:2419:DoDeployVirtualLabTask

Has anyone seen this? Possible causes and fixes? Thanks!

Iris Li

Martin Hollingsworth
Hi, Martin
It was discovered in vCenter that the standalone network name contains special characters, but it is not yet determined which character is causing the problem.
The underscore character does not cause this problem.

The solution is to recreate the virtual lab without using special characters.

Martin Hollingsworth

Iris Li Problem solved perfectly! Thank you!

Peter Haverhill

I’ve run into a similar issue before, didn’t manage to fix it, but I’m here to cheer you all on! 💪

Alistair

Just stopping by to say thanks for sharing the details—always good to learn from these cases. Hope everything gets sorted out smoothly! 😄