display ap offline-record

Function

The display ap offline-record command displays AP offline records.

Format

display ap offline-record { all | mac mac-address }

Parameters

Parameter	Description	Value
all	Displays offline records of all APs.	-
mac mac-address	Displays offline records of the AP with the specified MAC address.	The AP's MAC address must exist.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

This command displays AP offline records, helping the maintenance personnel manage and maintain the APs.

After the number of AP offline records reaches the maximum that can be stored, new records overwrite existing ones.

A maximum of five offline records can be stored for each AP.

Example

# Display offline records of all APs.

<HUAWEI> display ap offline-record all
------------------------------------------------------------------------------  
MAC               Last offline time      Reason                                 
------------------------------------------------------------------------------  
0023-0024-0080    2015-01-31/16:21:50    The AP name is modified.
60de-4476-e360    2015-01-31/14:02:35    An AP is deleted.
------------------------------------------------------------------------------  
Total records: 2

**Table 1** Description of the **display ap offline-record** command output
Item	Description
MAC	MAC address of an AP.
Last offline time	Time when the AP went offline last time.
Reason	Reason why the AP goes offline. For the description of offline reasons and handling suggestions, see Table 2. For the description of offline reasons and handling suggestions, see An AP Goes Offline Unexpectedly.

**Table 2** Possible causes and suggestions for APs to go offline
Reason Why an AP Goes Offline	Suggestion
The AC country code is modified.	The AP goes offline due to normal configuration changes, and no action is required.
The AP is replaced.	The AP goes offline due to normal configuration changes, and no action is required.
Reboot by ap update reset command. The AP is reset automatically after the upgrade.	The AP resets to load the new version file after the upgrade, and no action is required.
A command is delivered to reboot an AP.	The AC delivers a reboot command to the AP, and no action is required.
An AP is deleted.	The AP is deleted on the AC, and no action is required.
The license expires.	Apply for a new license. Huawei's Electronic Software Delivery Platform (ESDP) is accessible from the Internet and Huawei intranet. Internet: http://app.huawei.com/isdp Huawei intranet: http://w3.huawei.com/sdp
Insufficient license resources.	Choose one of the following handling suggestions based on the networking: If license control is deployed, check whether the link between the license server and client is disconnected. If so, restore the link. If N+1 or dual-link backup is deployed, check whether the active and standby link is disconnected. If so, restore the link. If the number of APs on the network exceeds the total number of license resources, apply for a new license.
The AP is added to the blacklist.	Check whether the AP needs to be added to the blacklist.
A CAPWAP tunnel is faulty (due to inconsistent link IDs).	The AP will automatically attempt to recover the link, and no action is required.
The DTLS configuration of the CAPWAP tunnel changes.	The AP goes offline due to normal configuration changes, and no action is required.
The AP's factory settings are restored.	The AP goes offline due to normal configuration changes, and no action is required.
The radio type is inconsistent between the AC and AP.	Run the display ap config-info command to verify the AP radio configuration.
Heartbeat packet transmission for the CAPWAP data tunnel between the AC and AP times out.	Check the intermediate network between the AP and AC.
Heartbeat packet transmission for the CAPWAP control tunnel between the AC and AP times out.	Check the intermediate network between the AP and AC.
The dual-link networking configuration is modified.	The configuration change causes the AP to automatically reboot, and no action is required.
The AP name is modified.	The AP goes offline due to normal configuration changes, and no action is required.
The AP group name is modified.	The AP goes offline due to normal configuration changes, and no action is required.
The management VLAN is modified.	The AP goes offline due to normal configuration changes, and no action is required.
AP provisioning parameters are set.	The AP goes offline due to normal configuration changes, and no action is required.
The CAPWAP source IP address is deleted.	The AP goes offline due to normal configuration changes, and no action is required.
The central AP goes offline.	Check the reason why the central AP goes offline.
The central AP proactively reboots RUs.	The AP goes offline due to normal configuration changes, and no action is required.
The AP is powered off and restarts.	Check the AP power supply.
An internal error (KP) occurs.	Contact technical support personnel.
An internal error (VOS signal error) occurs.	Contact technical support personnel.
An internal error (forwarding error monitored by MFPI) occurs.	Contact technical support personnel.
An internal error (PKO error monitored by MSC) occurs.	Contact technical support personnel.
An internal error (reset due to timer expiration) occurs.	Contact technical support personnel.
An internal error (reset of the write CPLD register) occurs.	Contact technical support personnel.
The reset button is pressed to reset the AP.	Check whether the AP is manually reset.
The AP restarts due to a CANBUS reset.	Contact technical support personnel.
The AP restarts due to AP interference.	Contact technical support personnel.
The AP restarts due to a chip exception. The AP restarts due to a firmware exception.	Contact technical support personnel.
The CAPWAP sensitive-info PSK is modified.	The configuration change causes the AP to automatically reboot, and no action is required.
The CAPWAP integrity-check PSK is modified.	The configuration change causes the AP to automatically reboot, and no action is required.
The country code is inconsistent on the AC and AP.	Check the country code configuration on the AC and AP.
The AP is forcibly disconnected.	No action is required.
The wideband status change.	The AP goes offline due to normal configuration changes, and no action is required.
Reset for a configuration delivery failure.	Check network connectivity. If no problem is found, contact technical support personnel.
Reboot for the branch group of AP change.	The AP goes offline due to normal configuration changes, and no action is required.
The AC license expires.	Re-activate the AC license.
A CAPWAP tunnel is faulty (due to a CAPWAP link entry verification failure).	The AP will automatically attempt to recover the link, and no action is required.
Batch delete	Check whether the active AC runs properly. When the active AC is restored, the AP switches to this active AC to go online.
Switch service radio to proxy scanning radio.	The configuration change causes the AP to automatically reboot, and no action is required.
Switch proxy scanning radio to service radio.	The configuration change causes the AP to automatically reboot, and no action is required.
The WAC license expires.	Purchase a new license and load it to iMaster NCE-Campus.
The device has been disconnected from the iMaster NCE-Campus for more than 90 days.	Verify the iMaster NCE-Campus address configured on the AC, and check network connectivity.
The device is deleted from the iMaster NCE-Campus.	No action is required.
The iMaster NCE-Campus does not deliver AP information.	Verify that AP information is correctly added to iMaster NCE-Campus, the AP is associated with the AC, and the AC is online. Verify the iMaster NCE-Campus address configured on the AC, and check network connectivity. Check whether iMaster NCE-Campus fails to deliver AP information. If so, manually deliver AP information again.
An internal error (Reset for firmware abnormal) occurs.	Contact technical support personnel.
An internal error (Reset for abnormal network port self-healing) occurs.	Contact technical support personnel.
An internal error (Reset for the forcible AP disconnection in specific scenarios) occurs.	Contact technical support personnel.
An internal error (Reset for slow task switching) occurs.	Contact technical support personnel.
An internal error (Reset for MFPI detect CAP PBUF use out) occurs.	Contact technical support personnel.
An internal error (Reset for ap abnormal self-healing) occurs.	No action is required.
An internal error (Reset for exception(redis-server exit)) occurs.	Contact technical support personnel.
An internal error (Reset for exception(confd exit)) occurs.	Contact technical support personnel.
An internal error (Reset for exception(callhome exit)) occurs.	Contact technical support personnel.
An internal error (Reset for an abnormal process) occurs.	Contact technical support personnel.
N+1 switchover of APs.	No action is required.
During inter-AC roaming, the SSID is inconsistent with that before roaming.	Check whether the SSID is consistent before and after roaming. If this fault persists, contact technical support personnel.
An internal error (Reset for an NP heartbeat message exception) occurs	Contact technical support personnel.
An internal error (exceed the extreme temperature) occurs.	Take proper measures to lower the ambient temperature, for example, by lowering the air conditioner temperature and ventilate the equipment room.
An internal error (memory use out) occurs.	Contact technical support personnel.
An internal error (dophi-server exit) occurs.	Contact technical support personnel.
An internal error (Wi-Fi SDK self-healing failure) occurs.	Contact technical support personnel.