Knowledge BaseTroubleshootingHost network port status is down

Host network port status is down

TroubleshootingZCF · CloudVersions3.x-5.5.30Article IDKB-100302Updated2026-08-19

Issue/Introduction

This article describes how to troubleshoot a host network port whose status is down. It applies to the initial diagnosis and resolution of similar issues in ZStack Cloud.

Environment

  • Product: ZCF
  • Component: Cloud
  • Version: 3.x-5.5.30

Possible causes

The host hardware, optical module, or NIC might have failed.

Resolution

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Host network port status is down | KB-100302 | ZStack Resource Center