---
title: "esx.problem.net.redundancy.lost"
description: "Lost uplink redundancy on a virtual switch. Physical NIC is down. Failure of the network cable, disconnect of cable, failure of the physical network card, failure of network switch, port, and so on."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/esx.problem.net.redundancy.lost.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event Monitors > Host Network Adapter Status > esx.problem.net.redundancy.lost"
dateModified: "2026-09-17"
---

# esx.problem.net.redundancy.lost

## Summary

Lost uplink redundancy on a virtual switch. Physical NIC is down.

## Causes

Failure of the network cable, disconnect of cable, failure of the physical network card, failure of network switch, port, and so on.

## Resolutions

Check the physical connection of the vmnic specified in the alert, and the configuration of the attached network switch.

Note that by browsing the Veeam view **\_vCenter Storage Network Topology** you can see which virtual switch is impacted, and which VMs are attached to the impacted switch.

Refer to this [VMware KB article](http://kb.vmware.com/kb/1009515) for more information on troubleshooting network connectivity issues.

## External

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