---
title: "esx.problem.net.lacp.uplink.fail.duplex"
description: "Duplex mode across all uplinks must be full, VDS uplink has different duplex modes. There is an issue with network uplink configuration. Review the event description for detail on the cause. Review network configuration."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/esx.problem.net.lacp.uplink.fail.duplex.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > vSphere Host Network Error > esx.problem.net.lacp.uplink.fail.duplex"
dateModified: "2026-09-10"
---

# esx.problem.net.lacp.uplink.fail.duplex

## Summary

Duplex mode across all uplinks must be full, VDS uplink has different duplex modes.

## Causes

There is an issue with network uplink configuration. Review the event description for detail on the cause.

## Resolutions

Review network configuration. More details can be found in this [VMware KB article](https://kb.vmware.com/s/article/2034683).

## External

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