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WLAN Troubleshooting Guide

About This Document
Using eDesk Pro for Network Inspection and Troubleshooting
Using Troubleshooting Insights
Risky Operations
- Hardware-Related Risky Operations
- Software-Related Risky Operations
Routine Maintenance
- Routine Maintenance Overview
- Before You Start
- Checking the Device Environment
  - Checking the Equipment Room Environment
  - Checking the Cable Status
- Checking Basic Device Information
  - Checking the Indicator Status
  - Checking for Critical or Major Alarms on an AC
- Checking the Device Running Status
- Checking Interface Information
- Checking Services
  - Checking the User Status
- Fault Information Collection and Feedback
Troubleshooting: Hardware
- Hardware Overview
- Troubleshooting Guidelines for Hardware
- Troubleshooting Cases for Hardware Faults
- Hardware FAQs
Troubleshooting: STA Experience Faults
- Troubleshooting Guidelines for STA Experience Faults
- Troubleshooting Cases for STA Experience Issues
- STA Experience FAQs
Troubleshooting: AP Joining Faults
- Troubleshooting Guidelines for AP Joining Faults
  - An AP Fails to Go Online on the AC
  - An AP Goes Offline Unexpectedly
- Troubleshooting Cases for AP Onboarding Issues
- AP Onboarding FAQs
Troubleshooting: STA Onboarding Faults
- Troubleshooting Guidelines for STA Onboarding Faults
- Troubleshooting Cases for STA Onboarding Issues
- STA Onboarding FAQs
Troubleshooting: Wireless Access Authentication Issues
- 802.1X Authentication Failures
- HTTP-based External Portal Authentication Failures
- Failures in External Portal Authentication Using the Portal Protocol
- Portal Redirection Failures
- Built-in Portal LDAP or AD Authentication Failures
- Failure to Access the Built-in Portal Page
  - Key Configuration Check
  - Common Built-in Portal Page Access Failures
- Troubleshooting Cases for STA Authentication Failures
- WLAN Authentication FAQs
Troubleshooting: Device Login Faults
- Troubleshooting Guidelines for Device Login Faults
- Device Login FAQs
Troubleshooting: Device Upgrade Faults
- Troubleshooting Guidelines for Device Upgrade Faults
- Troubleshooting Cases for Device Upgrade Failures
  - Case Study: Intelligent Upgrade Fails Because the CA Certificate on the AC Does Not Match That on the HOUP Server
  - Case Study: AP5030DN Upgrade and Mode Switching Are Abnormal Because the AP5030DN Enters the Assistant Package Mode
- Device Upgrade FAQs
Troubleshooting: Device Management Faults
- Troubleshooting Guidelines for Device Management Faults
- Device Management FAQs
Troubleshooting: Reliability Faults
- Troubleshooting Guidelines for Reliability Faults
- Troubleshooting Cases for Reliability Issues
- Reliability FAQs
Troubleshooting: Wireless Bridge Service Faults
- Troubleshooting Guidelines for Wireless Bridge Service Faults
- Wireless Bridge FAQs
Troubleshooting: Radio Management Service Faults
- Troubleshooting Guidelines for Radio Management Service Faults
  - Radio Calibration Does Not Take Effect
  - AI Roaming Does Not Take Effect
- Radio Management FAQs
Troubleshooting: Cloud Management Faults
- Troubleshooting Guidelines for Cloud Management Faults
- Troubleshooting Cases for Cloud Management Faults
  - Case Study: Fit APs Managed by a Cloud AC Fail to Go Online Due to Insufficient License Resources on the Cloud Management Platform
  - Case Study: In a VRRP Backup Scenario, a Loop Occurs on the Network When ACs Connect to the Cloud in PnP Auto-Negotiation Mode
Troubleshooting: CPE Service Faults
- Troubleshooting Guidelines for CPE Service Faults
- Troubleshooting Cases for CPE Service Faults
  - Case Study: When a CPE Roams Repeatedly, Terminals Connected to the CPE Are Intermittently Disconnected
  - Case Study: An Exception Occurs on a CPE Tunnel Due to EoGRE Configuration Changes
- CPE Service FAQs
  - How Can I Know the CPE Connected to a Wired Terminal and Its Uplink AP?
  - How Do I Collect CPE Fault Information by One Click?
Troubleshooting: Others
- Troubleshooting Guidelines for Other WLAN Service Faults
  - User Rate Limiting Does Not Take Effect
- Troubleshooting Cases for Other WLAN Service Issues
  - Case Study: Two STAs Connected to the Same SSID on the Same AP Cannot Communicate with Each Other Because the traffic-optimize bcmc deny all Command Is Executed on the Device
- FAQs About Other WLAN Services
TechNotes
- WLAN Network Optimization
- How an AP Joins an AC and Troubleshooting Any Join Failures
- How to Log In to WLAN ACs and APs
- Troubleshooting WLAN Password Issues
- AP Mode Switching - Overview, Configuration Examples, and Troubleshooting
- TechNotes: Mapping Between WACs and APs
- TechNotes: Wireless Packet Obtaining
- VLAN Deployment Guide for WLAN
- WLAN Performance Test Guide
- How to Configure Option 43 When Huawei APs Are Connected to DHCP Servers of Different Vendors
- Common WLAN Configuration Errors
Appendix: Common Information Collection and Fault Diagnostic Commands
- Information Collection
- Typical Fault Information Collection
- System Maintenance Methods
- Common Fault Diagnostic Commands
Appendix: Indicators
Contacting Huawei Technical Support

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).

Introduction

Introduction

This document describes how to log in to Huawei ACs and APs.

Table 19-10 lists common scenarios where you need to log in to ACs and APs.

Table 19-10 Common AC and AP login scenarios

WLAN Device	Mode Switching upon Deployment	Service Configuration	Routine O&M	Fault Diagnosis
AC	-	√	√	√
Fit AP	×	×	×	√
Fat AP	√	√	√	√
Cloud AP	√	×	×	√

The user name and password may be required during the login. The default username and password are available in WLAN Default Usernames and Passwords (Enterprise Network or Carrier). If you have not obtained the access permission of the document, see Help on the website to find out how to obtain it. If you forget the password, take measures by referring to the Troubleshooting WLAN Password Issues.

Internet Explorer, Firefox, or Chrome of the latest version is recommended for you to log in to the device using the web system. If a browser of an earlier version is used, the web page may not be properly displayed.

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Updated: 2023-06-02

Document ID: EDOC1000060368

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