---
title: "UplinkPortVlanUntrunkedEvent"
description: "Not all of the VLANs are trunked by the physical switch connected to the uplink port. There is an issue with the vSphere distributed switch VLAN configuration. Review the event description for detail on the cause."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/uplinkportvlanuntrunkedevent.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > vSphere Host Network Error > UplinkPortVlanUntrunkedEvent"
dateModified: "2026-09-10"
---

# UplinkPortVlanUntrunkedEvent

## Summary

Not all of the VLANs are trunked by the physical switch connected to the uplink port.

## Cause

There is an issue with the vSphere distributed switch VLAN configuration. Review the event description for detail on the cause.

## Resolutions

Review VMware online documents such as [vSphere Networking Guide](https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.networking.doc/GUID-35B40B0B-0C13-43B2-BC85-18C9C91BE2D4.html) to resolve issues.

## External

Refer to the [VMware Online Documentation](https://techdocs.broadcom.com/) for more information.