AP Crash File Upload

Access point crash files

A crash file is a diagnostic file that

  • is created when an AP experiences an unexpected reboot,

  • contains information about the state of the AP at the time of the crash, and

  • is stored in the local flash memory of the AP for retrieval.

AP crash files provide data that is essential for diagnosing the causes of unexpected reboots in access points. This data aids in troubleshooting and maintenance.

Process crash details

When a process crashes, the device collects various types of data. and compiles it into a single, compressed archive for analysis.

  • Full process core

  • Trace logs

  • Cisco IOS syslogs (not guaranteed in case of nonactive crashes)

  • System process information

  • Bootup logs

  • Reload logs

  • Certain types of proc information


Note

Except for the full core and tracelogs, everything else is a text file. This consolidated information provides a snapshot of the AP's state, which can be used for further diagnosis.

Limitations

Reports are not generated by the system in case of a reload.

Configure access point crash file upload process (CLI)

Set up and configure an access point to collect and upload crash files for diagnostics.

This involves configuring multiple data collection commands and ensuring files are available for troubleshooting access point failures.

Follow these steps to configure the AP crash file upload process:

Procedure

Step 1

Enter privileged EXEC mode.

Example:

Device# enable

Step 2

Collect AP crash information.

Example:

Device# ap name ap-name crash-file get-crash-data

The crash file is uploaded automatically after the AP reloads to the ready state. As a result, this command does not have to be manually executed.

Step 3

Collect the AP core dump file for slot 0 or slot 1.

Example:

Device# ap name ap-name crash-file get-radio-core-dump slot {0 | 1}

Step 4

Upload the AP crash coredump file to the given TFTP location.

Example:

Device# ap name ap-name core-dump tftp-ip crash-file uncompress

Step 5

Display your AP crash file and the radio crash file.

Step 6

Display the crash file in bootflash with .crash extension.

Example:

Device# dir bootflash

The AP crash files and core dumps are collected and available in specified locations for troubleshooting.