fsck_fail: True if file system check has failed.fs_zero_size: True when flash hung has been detected file system showing "-" - (show file system - command).flash_issue: True if any flash corruption has been observed.fs_free_bytes: Number of free bytes in the flash file system.It breaks down reports into the following path: / / įile: _ap_fs.csv - Summary of the checks executed on APs and their results It stores all output display by the WLAN poller on the terminal.Note: Remember, the script needs to be run 2 times to have accurate information on how many AP are impacted WLAN Poller Output Use the following command: wlanpoller -cli-logging Run WLAN Pollerįrom the directory where config files were created (Previous section, step 3). Note: You do not need to specify any AP list. You can add several WLCs, If so, copy/paste the above syntaxis using new WLC information. You can find this information on WLC Monitor Page. To recover APs use: ap file system checks (WARNING: recover will force IOS image download and AP reload) To identify affected APs use: ap file system checks (WARNING: recover will force IOS image download and AP reload) Specify WLC/AP credentials set global WLC credentialsįor the flash check/recover we have the following options Specify WLC/AP connection mode config global mode for WLC and AP connection: "ssh" or "telnet" Once the installation is completed and files are generated. For instructions on how to install the script follow the next link:įor a step by step guide on Windows 10 machine click hereįor a step by step guide on MAC OS click here Move the file to a specific folder you want to store WLAN poller filesģ. If you have an older version(.rar) of WLAN Poller, follow below step 2 and 3.Ģ. This version will auto-install all required components for your WLAN Poller tool. Note: If you are downloading the latest version of the WLAN Poller tool from the above link, you can skip steps 2 and 3. Make sure you run it in a maintenance window. Note: This recovery method causes the AP to reload once the image is downloaded and installed. The script triggers command test capwap image capwap only for those APs that were flagged during the previous two steps.If value matches then the file is ok, if not then AP is flagged in order to recover on the third run The script compares MD5 checksum values vs its database.The final MD5 value for a specific file is the one that has the more hits across the same AP family on WLC. The script builds the MD5 database looking at MD5 checksum value for every file on the AP.else, the script will report this on the final report and this AP is eligible to be recovered.If all values good, move to the next AP.If it is accessible, AP will check MD5 values for critical files. the script flags AP on its final report and this AP is eligible to be recovered.If there is a failure, the script will report this on the final report and this AP is eligible to be recovered. else repeat the command up to 4 times.If it is accessible, it runs the command fsck flash: WLAN Poller LogicĮvery time the script is run it verifies whether an AP’s flash is accessible or not. In order to identify affected APs on the network and fix them before an upgrade. You need to run the WLAN PollerĬaution: Before Upgrade, complete reading this document. This is seen especially after an upgrade is performed to the WLC but not necessarily limited to this scenario.ĪP may be working fine, servicing client, etc, while on this problem state which is not easily detectable. Note: There is a much higher prevalence in Wave1 AP models like 1700/600 on this issue vs other AP types due to flash HW type.Īs per FN70330 - IOS AP stranded due to flash corruption issue, due to a number of software bugs an AP in normal operation, the flash file system on some IOS APs may become corrupt over time. Cisco Aironet 1520 (1522, 1524), 1530, 1550 (1552), 1570, and Industrial Wireless 3700 Series outdoor and industrial wireless access points.The information in this document is based on these software and hardware versions: PrerequisitesĬisco recommends that you have basic knowledge of: This document describes how to handle flash corruption problems reported on IOS-based Cisco Access Points (AP).
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