Huawei AC & Fit AP Operating manual

Quick Maintenance Guide
AC & Fit AP
Issue: 04 (2018-05-30)

About This Document
This document provides commonly used methods to maintain AC and Fit AP products, troubleshoot
faults, and collect fault information on the web platform. It will help you quickly understand key
preventive maintenance measures, so as to detect and remove potential risks. References are also
listed at the end of the document, from which you will obtain more information for AC and Fit AP
maintenance.

How to Quickly Maintain HuaweiAC & Fit AP
Contents
Before You Start 1
2
Solution to a Web Platform Login Failure 17
Risky Operations 18
References 19
Fault Information Collection and Feedback 12

Before You Start
Before starting maintenance of AC and Fit AP products, you are advised to:
1Collect the network plan and data of the entire network, make a topology diagram and a data table
(including ports, IP addresses, service and management VLANs, and SSIDs), and attach them in a
position easy for you to check the topology and data.
3Obtain the following contact information and attach it near your workstation:
Huawei global technical service hotline (visit http://e.huawei.com/en/service-hotline and query the
telephone number of the Huawei local office in your region).
Telephone number of the agent that provides network construction and maintenance service for you
4Prepare tools and cables that you may use during maintenance.
5Visit Huawei enterprise technical support website (http://support.huawei.com/enterprise and register a
user account. A registered account allows you to browse or download more product documents,
cases, and announcements, as well as subscribe to information updates.
No. Item Description
1 Cables
Operation terminal
Instruments and
meters
One standard RS232 serial cable: Connect the RJ45 connector to the console
port of the device you need to maintain and the DB9 connector to the USB
port of the operation terminal, so that you can log in to the device.
Network cables, optical fibers and SFP/eSFP/SFP+/XSFP/QSFP+ transceiver
modules: used to locate failure points or replace faulty cables or modules.
One operation terminal, which is generally a portable computer with serial
communication software installed for device login.
Optical power meter: used to test optical parameters of optical ports (such as
optical power and receiver sensitivity).
WLAN tester: used to measure wireless signal strength. You can use a
software tool, such as Huawei WLAN Tester, or a handheld tester, such as
Fluke Wi-Fi Tester.
2
3
1
This document is applicable to V200R006 and later versions. The screenshots and commands in this
document may differ slightly from actual ones, and the actual ones shall prevail. Version differences
that affect comprehension are explained in the document.
6
2Collect names and passwords of users such as STelnet and Web login users, so that you can quickly
obtain them as required when troubleshooting. Save the user names and passwords properly. To view
default account information, visit http://support.huawei.com/onlinetoolsweb/einfoplus/Portal, log in to the
Online Tools Platform, click Default Account Query, and select a product model and version.

How to Quickly Maintain Huawei
AC & Fit AP
Follow this flowchart for AC & Fit AP maintenance:
2
To check AC status, AP status, user distribution, or other information required for
fault location, you need to log in to the web platform. (For the login method, see
the Web-based Configuration Guide ). If the login fails, see Solution to a Web
Platform Login Failure.
Collect and report fault
information
NoYes
Check
indicators
and rectify
the fault
Check
alarms on
the AC and
rectify the
fault
Check AP
status and
rectify the
fault
Check AC
status and
rectify the
fault
Check
user
status and
rectify the
fault
Check the
license of
the AC
and rectify
the fault
Start
End
Is the fault
rectified?
Check
whether an
AP needs to
be replaced

If all indicators on an AP are off, the indicators may have been turned off using
the led off command. It is recommended that you run the undo led off command
on the AC to turn on the indicators and then check indicator status again.
Check Indicator Status
Observe indicators on each AC and AP.If you find any indicator in an abnormal state, record the fault
information immediately and take measures based on the meaning of the indicator state described in the
Product Description of the product. If the fault cannot be rectified, contact your agent or Huawei
enterprise technical service hotline.
The following table lists the normal indicator states on an AC and an AP.
3
Category Indicator Normal State
Service port
indicator Network cable connected: steady green
No cable connected: off
AC PWR
SYS
Steady green (If there are two indicators, at least one of them should be
steady green.)
Slow blinking green
STAT
SPED
Steady green
Off
PoE Off (Ignore this if there is no PoE indicator on the AC.)
Link/ACT Steady green or blinking (Ignore this if there is no Link/ACT indicator on
the AP.)
Wireless Blinking yellow or green or steady on (Ignore this if there is no Wireless
indicator on the AP.)
AP SYS Slow blinking green

Check for Critical or Major Alarms on the AC
4
Log in to the web platform, click CLI Console on the upper right corner to display the command line
interface (CLI). Run the display alarm active command on the CLI to check whether critical or major
alarms have been reported.
<AC6605> display alarm active | include Major
77/Independent/2015-09-21 11:08:13/-/0xfff32000/hwApFaultTrap/Major/Start/OID
1.3.6.1.4.1.2011.6.139.13.1.1.1 AP changes to fault. (APMAC=[60.de.44.74.96.40 (
hex)], APType=AP5010DN-AGN, APName=AP_1, APFAULTTIME=2, APID=0)
78/Independent/2015-09-21 11:08:22/-/0xfff32000/hwApFaultTrap/Major/Start/OID
1.3.6.1.4.1.2011.6.139.13.1.1.1 AP changes to fault. (APMAC=[dc.d2.fc.f6.76.a0 (
hex)], APType=AP6010DN-AGN, APName=AP_3, APFAULTTIME=1, APID=3)
Alarms on an AC are classified into critical, major, minor, warning, indeterminate, and cleared alarms,
among which critical and major alarms must be handled immediately. Handle these alarms according to
the Alarm Handling. If alarms cannot be cleared, record fault information and contact your agent or
Huawei enterprise technical service hotline.
If you have a network management system (NMS), such as eSight, check alarms
on the NMS. For details, see the NMS product documentation.
A/B/C/D/E/F/G/H/I/J
A=Sequence, B=RootKindFlag(Independent|RootCause|nonRootCause)
C=Generating time, D=Clearing time
E=ID, F=Name, G=Level, H=State
I=Description information for locating(Para info, Reason info)
J=RootCause alarm sequence(Only for nonRootCause alarm)
The alarm format is as follows:

Check AP Status
5
Log in to the web platform, and choose Monitoring >Summary to check whether an AP is working
properly.
Check whether the AP version matches the AC version. If not, upgrade the AP to a version
matching the AC version by referring to the AP upgrade guide.
1Check whether the AP health score is 100.
2Choose Monitoring >AP to check AP information.
If the AP health score is 100, check its CPU Usage and Memory Usage.
If the AP health score is lower than 100, check Version,Status,STA Access Failure Ratio,
Logout Ratio,STA Quantity,CPU Usage,and Memory Usage.
Check whether CPU Usage exceeds 90% and whether Memory Usage exceeds 80%.
If the AP has a high CPU usage or memory usage, check the CPU usage or memory usage in the
next 5-10 minutes. If the value remains high, record the CPU usage and memory usage data.

Check AP Status
6
Check whether STA Access Failure Ratio and Logout Ratio values exceed 20%.
If the STA access failure ratio or logout ratio exceeds 20%, record the values.
Check the STA Quantity field to see whether more than 40 STAs connect to the same AP.
More STAs connected to a single AP means fewer resources for each STA and therefore a worse
user experience. If more than 40 STAs associate with the same AP, user experience will deteriorate.
In this case, reduce the maximum number of STAs that can associate with a VAP to deliver good
experience to each user.
3Choose Diagnosis >Intelligent Diagnosis, select an AP, and start the diagnosis. Handle the
problem found in the diagnosis according to the suggestions provided in the diagnostic result.
4Seek technical support.
If the problem persists, contact your agent or Huawei enterprise technical service hotline, and provide
the fault information you have recorded to the technical support engineers.
Check whether the Status field of the AP displays normal. Possible values of this field include:
•normal: The AP is running normally, and no action is required.
•fault: The AP failed to go online. Check the network environment and configuration. Remove errors
in the radio environment or configuration to ensure that the AP can go online.
•name-conflicted: Another AP with the same name has already gone online. Rename the current AP.
•ver-mismatch: The AP and AC versions do not match. Upgrade the AP to a version matching the
AC version by referring to the AP upgrade guide.
•download: The AP is upgrading. Wait until the upgrade is complete.
•Config: The AP is initializing the configuration. Wait until the initialization is complete.
•Committing: WLAN configuration is being delivered to the AP. Wait until the configuration delivery is
complete.
•Standby: This is the AP status displayed on the standby AC, and no action is required.
•countryCode-mismatch: The AP version does not support the country code configured on the AC.
Upgrade the AP or modify the country code on the AC.
If the AP is in another state or its state cannot restore to normal after you perform the preceding
operations, collect network configuration information.

Check AC Status
7
Log in to the web platform, and choose Monitoring > AC > AC to check whether the AC is working
properly.
1Check whether the CPU usage and memory usage are lower than 80%.
If the CPU usage or memory usage is too high, observe the CPU usage or memory usage values in
the next 5-10 minutes. If the values remain high, record the values and contact your agent or Huawei
enterprise technical service hotline.
2Check whether AC's temperature is in the range of -5oCto +50oC (23oFto 122oF).
If the AC temperature is out of the operating temperature range, check whether fans of the AC are
running normally and whether the ambient temperature is in normal range. High temperature may
cause damage to the device. If the temperature keeps increasing and exceeds the upper threshold,
the AC will be powered off automatically, causing service interruption.
An ACU2 card has no fans. Check the fans in the chassis where theACU2 card is
installed and the ambient temperature.

Check User Status
8
Log in to the web platform, and choose Monitoring >Summary to check status of users associated
with an AP.
1Check whether the user health score is 100.
2Check user information.
If the user health score is 100, check Login Failure Record and User Distribution.
If the user health score is lower than 100, check Negotiation Rate,SNR,Retransmission Ratio,
Packet Loss Ratio,Login Failure Record,and User Distribution.
Choose Monitoring > User > User Statistics to view user login failure records. Select a record,
and then click Intelligent Diagnosis. Handle the problem according to the suggestions provided in
the diagnostic result.
Choose Monitoring > User > User Distribution to check user distribution. If user distribution
among APs is severely unbalanced, record user distribution information.
Choose Monitoring > User > User Statistics, and check the Negotiation Rate values of users. If
the negotiation rate of a user is lower than 12 Mbit/s, choose Configuration > AP Config > Profile
> Radio Management, select 2G Radio Profile or 5G Radio Profile, and set a larger value for
Maximum rate.
Choose Monitoring > User > User Statistics, and check the SNR values of users. If the SNR of a
user is smaller than 20 dB, check whether there is severe interference in the radio environment, and
record configuration, network deployment, and SNR data.

Check User Status
9
3Choose Diagnosis >Intelligent Diagnosis, select a user, and start the diagnosis. Handle the
problem found in the diagnosis according to the suggestions provided in the diagnostic result.
4Seek technical support.
If the problem persists, contact your agent or Huawei enterprise technical service hotline, and provide
the fault information you have recorded to the technical support engineers.
Choose Monitoring > User > User Statistics, and check whether the Retransmission Ratio value
exceeds 50% and whether the Packet Loss Ratio value exceeds 5%. If the retransmission ratio
exceeds 50% or the packet loss ratio exceeds 5%, check whether network communication is normal
and whether the radio environment affects data transmission on the network, and record related
information.

Check the AC License
10
Log in to the web platform, and choose Maintenance > AC Maintenance > License to check whether
the AC's license is normal.
1Check whether the License status field displays Normal.
If the License status field is not Normal, reload and activate the license.
If the problem persists, record the license key and ESN of the AC by referring to the License Usage
Guide,and contact your agent or Huawei enterprise technical service hotline.
2Check whether the number of APs connected to the AC is in the expected range. If an AP fails to go
online, check the AP status to analyze the cause. For details, see Check AP Status.

Check Whether an AP Needs to Be Replaced
11
1If you doubt that an AP is faulty, contact your agent or Huawei enterprise technical support hotline for
further confirmation.
2Replace an AP rapidly while retaining the original AP configuration as follows:
Log in to the web platform, and choose Configuration > AP Config > AP Config > AP Info.
Select the AP to be replaced, and click Replace.
Enter the new AP's MAC address in New AP MAC. Alternatively, click ... In the dialog box that is
displayed, select an AP and click OK. The new AP's model must be the same as the original AP.
The new AP goes online with the ID of the original AP. All data configured on the original AP takes
effect on the new AP.
Replace an AP.

12
Fault Information Collection
and Feedback
When you find any exceptions on an AC or AP, collect fault information before taking rectification
measures.
Fault information includes:
Basic fault information: fault occurrence time, symptom, severity, impact, topology of the failure point,
measures that have been taken, and effect of the measures
Running information: startup configuration, current configuration, interface information, and system
version
Log information: logs record when the fault occurred
Diagnostic information: recorded by the intelligent diagnosis tool after diagnosing an AC, AP, or user
Provide the collected information to your agent or Huawei technical support engineers.
Collect Fault Basic Information
The following table lists the basic information that you need to collect when a fault occurs.
No. Item Collection Method
1
5
Fault occurrence time
Symptom
Impact
Topology
Measures taken
Record the time when the fault occurred, accurate to minutes.
Record the fault symptom and detailed information.
Record severity of the fault and affected services.
Draw a network diagram, showing the upstream and downstream devices and
connected ports.
Record the measures that have been taken and effect of the measures
(including the configuration procedure and command outputs).
2
3
4
Collect Running Information
Log in to the web platform, choose Diagnosis > Diagnosis Tool > One-click Information Collection,
and click One-click Collection to collect device running information, including the startup configuration,
current configuration, interface information, and system version.
The collected information is saved in the web_diaginfo.txt file. Click to download the file to your PC
so that you can view the file or send it to technical support engineers.

13
Collect Log Information
Collect AC diagnostic logs.
For V200R007C20 and earlier versions: Log in to the web platform, choose Maintenance > AC
Maintenance > Log > View AC Logs, and click Export.
1
Logs record such information as user operations, system faults, and system security events.
In the Export Logs dialog box, select the log file you want to export, and click OK.

14
Collect Log Information
Files with file name extensions .log and .log.zip are user log files, and those with file name
extensions .dblg and dblg.zip are diagnostic log files. The log.log and log.dblg files are latest log files.
Save the exported log files to your PC so that you can view the files or send them to technical support
engineers.
For V200R007C20 and later versions: Log in to the web platform, choose Maintenance > AC
Maintenance >Log > Log File, select required log files, and click Download.

15
Collect Log Information
Collect AP diagnostic logs.
For V200R006: Log in to the web platform, choose Maintenance > AP Maintenance > Log, and
click Export Logs in the row of the AP whose logs you want to export.
2
In the Export Logs dialog box, select the log file you want to export, and click OK.
Files with file name extension .log are user log files, and those with file name extension .dblg are
diagnostic log files. The log.log and log.dblg files are latest log files. Save the exported log files to
your PC so that you can view the files or send them to technical support engineers.
For V200R007 and later versions: Log in to the web platform, choose Maintenance > AP
Maintenance > Log, and click Export the log or diagnosis information in the row of the AP
whose logs you want to export.
In the Export the Log or Diagnosis Information dialog box, select the log or diagnosis file that you
want to export, and click OK.

14
Collect Diagnostic Information
16
When a fault occurs on your WLAN network, you can use the intelligent diagnosis function to diagnose
WLAN devices and the network, and rectify the fault accordingly. If the fault cannot be rectified, export
diagnostic information and log information, and contact your agent or Huawei technical service hotline.
1Run an intelligent diagnosis task.
Log in to the web platform, choose Diagnosis > Intelligent Diagnosis, select a diagnosis object and
set diagnosis parameters, and then run the diagnosis task.
2Export diagnostic information and log information.
After the diagnosis task is completed, click Export Diagnosis Info, and then click OK in the dialog
box that is displayed.
The system saves diagnostic information in .txt files and prompts you to save them to your computer.
The files downloaded to your PC are named overall_diaginfo_xxx.txt and autodiagnose-detail.txt.
The overall_diaginfo_xxx.txt file saves all diagnostic information on the AC, and the autodiagnose-
detail.txt file saves the current intelligent diagnostic result.
3View diagnostic information and log information or send them to technical support engineers.

17
Solution to a Web Platform Login
Failure
If you fail to log in to the AC using the web platform, log in to the AC through Telnet/STelnet or the
console port (serial port), and then check and modify the configuration for the web platform.
1Check whether the web function is enabled on the AC.
Run the display http server command to check the HTTP/HTTPS configuration.
If the HTTP/HTTPS service is not enabled, run the http server enable or http secure-server enable
command in the system view to enable the HTTP/HTTPS service.
2Check whether the user name and password are correct.
If you forget the password, restore the password by referring to section "Forgetting Passwords" in the
Troubleshooting.
3Check whether the service types for the login user include HTTP.
Run the display local-user username username command. If the Service-type-mask field in the
command output contains H, the HTTP service is included in the service types for the user that is
used to log in to the web platform.
4Check the browser version and settings.
If the browser version does not match the web platform or its settings are incorrect (for example, the
security level is too high), use another browser.
For the browser versions supported by the web platform, see the Web-based Configuration.
7Seek technical support.
If the preceding methods are ineffective, contact your agent or Huawei technical service hotline.
5Check whether the IP address of the PC used to log in to the web platform and the AC's management
IP address are reachable to each other.
Check whether the AC's management IP address can be pinged from the PC.
6Check whether the HTTP/HTTPS port number is blocked on any device between the PC and the AC.
The default HTTP port number is 80, and the default HTTPS port number is 443.