About the Release Notes

This release notes document describes what is new or changed in this release, instructions to upgrade to this release, and open and resolved caveats for this release. Unless otherwise noted, in this document, Cisco Wireless Controllers are referred to as controllers, and Cisco lightweight access points are referred to as access points or APs.

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Revison History

Table 1. Revision History

Modification Date

Modification Details

January 30, 2019 Added a note about issues related to Cisco Wave 1 AP flash and the solution to address them in the Upgrading Cisco Wireless Release section.

October 30, 2018

Open Caveats—Added CSCvi97023, CSCvj95336, CSCvi49059

Resolved Caveats—Added CSCvh65876, CSCvf66680, CSCvf66696, CSCve64652, CSCvf66723, CSCvh21953

July 24, 2018

Added the CIMC Utility Upgrade for 5520 and 8540 Controllers section.

Supported Cisco Wireless Controller Platforms

The following Cisco Wireless Controller platforms are supported in this release:

  • Cisco 3504 Wireless Controller

  • Cisco 5520 Wireless Controller

  • Cisco 8540 Wireless Controller

  • Cisco Virtual Wireless Controller (vWLC) on the following platforms:

    • VMware vSphere Hypervisor (ESXi) Version 5.x and 6.x

    • Hyper-V on Microsoft Servers 2012 and later versions (Support introduced in Release 8.4)

    • Kernel-based virtual machine (KVM) (Support introduced in Release 8.1. After KVM is deployed, we recommend that you do not downgrade to a Cisco Wireless release that is earlier than Release 8.1.)

  • Cisco Wireless Controllers for High Availability for Cisco 3504 WLC, Cisco 5520 WLC, and Cisco 8540 WLC.

  • Cisco Mobility Express Solution

Supported Cisco Access Point Platforms

The following Cisco AP platforms are supported in this release:

  • Cisco Aironet 700 Series Access Points

  • Cisco Aironet 700W Series Access Points

  • Cisco AP803 Integrated Access Point

  • Integrated Access Point on Cisco 1100, 1101, and 1109 Integrated Services Routers

  • Cisco Aironet 1700 Series Access Points

  • Cisco Aironet 1800 Series Access Points

  • Cisco Aironet 1810 Series OfficeExtend Access Points

  • Cisco Aironet 1810W Series Access Points

  • Cisco Aironet 1815 Series Access Points

  • Cisco Aironet 1830 Series Access Points

  • Cisco Aironet 1850 Series Access Points

  • Cisco Aironet 2700 Series Access Points

  • Cisco Aironet 2800 Series Access Points

  • Cisco Aironet 3700 Series Access Points

  • Cisco Aironet 3800 Series Access Points

  • Cisco ASA 5506W-AP702

  • Cisco Aironet 1530 Series Access Points

  • Cisco Aironet 1540 Series Access Points

  • Cisco Aironet 1560 Series Access Points

  • Cisco Aironet 1570 Series Access Points

  • Cisco Industrial Wireless 3700 Series Access Points


For information about Cisco Wireless software releases that support specific Cisco access point modules, see the "Software Release Support for Specific Access Point Modules" section in the Cisco Wireless Solutions Software Compatibility Matrix document.

What's New in Release

This section provides a brief introduction to the new features and enhancements introduced in this release.


For complete listing of all the documentation published for Cisco Wireless Release 8.7, see the Documentation Roadmap:


Cisco Wave 2 AP Features

  • Managing BLE Beacons in Cisco Wave 2 APs—BLE beacons are battery-powered, low-cost transmitters integrated with Cisco Wave 2 AP radios and can be used to transmit proximity-based, context-aware messages to enhance location services for mobile devices.

    For more information, see the "Managing BLE Beacons in Cisco Wave 2 APs" section in the Cisco Wireless Controller Configuration Guide.

  • 802.1X Support for EAP-TLS and EAP-PEAP—In this release, 802.1X support is extended to EAP-TLS and PEAP methods along with EAP-FAST method in Cisco Wave 2 APs.

    Prior to this release, EAP-FAST was the only supported 802.1X AP switchport authentication method.

    EAP-TLS and PEAP methods are supported only in Cisco Wave 2 APs. Cisco Wave 1 APs support only EAP-FAST method.

    For more information, see the "AP 802.1X Supplicant" section in the Cisco Wireless Controller Configuration Guide.

  • AUX Ethernet Port Enabled on Cisco Wave 2 APs—The second Ethernet port, also called the AUX port, of Cisco Aironet 1850, 2800, and 3800 Series APs is, by default, used as a link aggregation (LAG) port. It is possible to use this LAG port as a LAN port when LAG is disabled. When the AUX port is configured as a LAN port, you can either use the AP group setting to configure the LAN port for a group of APs or use the LAN override functionality to configure the LAN port for each AP separately.

    For more information, see the "Converting Cisco Wave 2 AP AUX Port to LAN Port (CLI)" section in the Cisco Wireless Controller Configuration Guide.

  • The following features, which are already supported in Wave 1 APs, are supported in Wave 2 APs in this release:

    • DHCP Option 60

    • Limit clients per AP radio or per WLAN per AP radio

    • Passive clients

    • Proxy ARP

    • FlexConnect Ethernet fallback

    • AAA override of VLAN name, VLAN name ID template for FlexConnect local authentication

    • AAA override for bidirectional rate limit per client or BSSID

    • Management Frame Protection

IPv4 DNS-Based Access Control List Filtering for BYOD

This feature extends FlexConnect ACL to accept internet domain names in addition to the existing IP addresses in its rules. This provides the flexibility of matching traffic based on the destination URL rather than the IP addresses associated with the URL.

In this release, this feature is also supported on Software-Defined Accesss Wireless (Fabric).

For more information, see the "FlexConnect ACLs" section in the Cisco Wireless Controller Configuration Guide.

Enhancement to High Availability Monitoring and Management

Monitoring and management of high availability standby WLC is enhanced to display the serial number and fan status of the standby WLC:

  • GUI—The new statistics are displayed on the Monitor > Redundancy > Peer Statistics page.

  • CLI—The show redundancy peer-system statistics command displays the new statistics.

Encrypted Mobility Tunnel

A secure link called the encrypted mobility tunnel, which is based on the mobility tunnel and is encrypted using CAPWAP DTLS protocol, can be established between an anchor and a foreign Cisco WLC. The encrypted mobility tunnel feature is supported in high availability (HA) client SSO scenarios.

For more information, see the "Encrypted Mobility Tunnel" chapter in the Cisco Wireless Controller Configuration Guide.

Enhancement to RxSOP Threshold Configuration

Prior to this release, if you configured RxSOP threshold on Cisco WLC CLI to a custom value, the Cisco WLC GUI would reflect the threshold value as AUTO. In this release, an option is provided on Cisco WLC GUI to configure a custom RxSOP threshold value.

For more information, see the "Receiver Start of Packet Detection Threshold (Rx-SOP)" section in the Cisco Wireless Controller Configuration Guide.

Enable Cisco CleanAir, Disable BLE Detection by Default

Prior to this release, if Cisco CleanAir was enabled, by default, the BLE beacon was included in the list of interferences to be detected. In this release, the functionality is changed wherein the BLE beacon is, by default, excluded from the list of interferences to be detected. This change in functionality is made to eliminate unwanted off-channel scans to improve performance. If you want the BLE beacon to be detected, you must explicitly add it to the list of interferences to be detected.

NMSP by AP Groups with Subscription List from CMX

In this release, support is added to send only the required Network Mobility Services Protocol (NMSP) data to Cisco Connected Mobile Experiences (CMX) (applicable to both on-premise and cloud-based Cisco CMX). Cisco CMX can subscribe to NMSP data of specific APs or AP groups based on the active services in Cisco WLC.

For more information, see the "NMSP by AP Groups with Subscription List from CMX" section in the Cisco Wireless Controller Configuration Guide.

Software Release Types and Recommendations

Table 2. Release Types

Release Type



Maintenance Deployment (MD)

Software releases that provide bug-fix support and ongoing software maintenance. These releases are categorized as Maintenance Deployment (MD)

These are long-living releases with ongoing software maintenance.

Provides you with a software release that offers stability and long support duration with periodic maintenance releases (MRs).

Early Deployment (ED)

Software releases that provide new features and new hardware platform support in addition to bug fixes. These releases are categorized as Early Deployment (ED).

These are short-lived releases.

Allows you to deploy the latest features and new hardware platforms or modules.

For detailed release recommendations, see the Guidelines for Cisco Wireless Software Release Migration Bulletin at:


Table 3. Upgrade Path to Cisco WLC Software Release

Current Software Release

Upgrade Path to Release


You can upgrade directly to Release


You can upgrade directly to Release

Upgrading Cisco Wireless Release

This section describes the guidelines and limitations that you need to be aware of when you are upgrading the Cisco WLC software and the procedure to upgrade to this release.


Before you upgrade to this release, we recommend that you go through the following documents to understand various issues related to Cisco Wave 1 AP flash and the solution to address them:

Guidelines and Limitations

  • Legacy clients that require RC4 or 3DES encryption types are not supported in Local EAP authentication.

  • This release supports additional configuration options for 802.11r FT enable and disable. The additional configuration option is not valid for releases earlier than Release 8.4. If you downgrade from Release 8.7 to Release 8.2 or an earlier release, the additional configuration option is invalidated and defaulted to FT disable. When you reboot Cisco WLC with the downgraded image, invalid configurations are printed on the console. We recommend that you ignore this because there is no functional impact, and the configuration defaults to FT disable.

  • If you downgrade from Release 8.7 to a 7.x release, the trap configuration is lost and must be reconfigured.

  • After downloading the new software to the Cisco APs, it is possible that a Cisco AP may get stuck in an upgrading image state. In such a scenario, it might be necessary to forcefully reboot Cisco WLC to download a new image or to reboot Cisco WLC after the download of the new image. You can forcefully reboot Cisco WLC by entering the reset system forced command.

  • It is not possible to download some of the older configurations from Cisco WLC because of the Multicast and IP address validations. See the "Restrictions on Configuring Multicast Mode" section in the Cisco Wireless Controller Configuration Guide for detailed information about platform support for global multicast and multicast mode.

  • If you upgrade from Release to a later release, the config redundancy mobilitymac mac-addr command's setting is removed. You must manually reconfigure the mobility MAC address after the upgrade.

  • If you are upgrading from Release or 8.0.15x.0 to a later release and also have the multiple country code feature configured, the feature configuration is corrupted after the upgrade. For more information, see CSCve41740.

  • If you are upgrading from a 7.4.x or an earlier release to a release later than 7.4, the Called Station ID type information is mapped to the RADIUS Accounting Called Station ID type, which, by default, is set to apradio-mac-ssid. You can configure the RADIUS Authentication Called Station ID type information by using the config radius auth callStationIdType command.

  • When a client sends an HTTP request, the Cisco WLC intercepts it for redirection to the login page. If the HTTP GET request that is intercepted by the Cisco WLC is longer than 2000 bytes, the Cisco WLC drops the packet. Track the Caveat ID CSCuy81133 for a possible enhancement to address this restriction.

  • When downgrading from one release to another, you might lose the configuration from your current release. The workaround is to reload the previous Cisco WLC configuration files that are saved in the backup server, or to reconfigure Cisco WLC.

  • When you upgrade Cisco WLC to an intermediate release, wait until all the APs that are associated with Cisco WLC are upgraded to the intermediate release before you install the latest Cisco WLC software. In large networks, it can take some time to download the software on each AP.

  • You can upgrade to a new release of the Cisco WLC software or downgrade to an earlier release even if FIPS is enabled.

  • When you upgrade to the latest software release, the software on the APs associated with Cisco WLC is also automatically upgraded. When an AP is loading software, each of its LEDs blinks in succession.

  • Cisco WLCs support standard SNMP MIB files. MIBs can be downloaded from the software download page on Cisco.com.

  • The Cisco WLC software is factory installed on your Cisco WLC and is automatically downloaded to the APs after a release upgrade and whenever an AP joins a Cisco WLC. We recommend that you install the latest software version available for maximum operational benefit.

  • Ensure that you have a TFTP, HTTP, FTP, or SFTP server available for the software upgrade. Follow these guidelines when setting up a server:

    • Ensure that your TFTP server supports files that are larger than the size of Cisco WLC software image. Some TFTP servers that support files of this size are tftpd32 and the TFTP server within Cisco Prime Infrastructure. If you attempt to download the Cisco WLC software image and your TFTP server does not support files of this size, the following error message appears:

      TFTP failure while storing in flash

    • If you are upgrading through the distribution system network port, the TFTP or FTP server can be on the same subnet or a different subnet because the distribution system port is routable.

  • The Cisco WLC Bootloader stores a copy of the active primary image and the backup image. If the primary image becomes corrupted, you can use the Bootloader to boot with the backup image.

    With the backup image stored before rebooting, from the Boot Options menu, choose Option 2: Run Backup Image to boot from the backup image. Then, upgrade with a known working image and reboot Cisco WLC.

  • You can control the addresses that are sent in the Control and Provisioning of Wireless Access Points (CAPWAP) discovery responses when NAT is enabled on the Management Interface, using the following command:

    config network ap-discovery nat-ip-only {enable | disable}

    The following are the details of the command:

    enable —Enables use of NAT IP only in a discovery response. This is the default. Use this command if all the APs are outside the NAT gateway.

    disable —Enables use of both NAT IP and non-NAT IP in a discovery response. Use this command if APs are on the inside and outside the NAT gateway, for example, Local Mode and OfficeExtend APs are on the same Cisco WLC.


    To avoid stranding of APs, you must disable AP link latency (if enabled) before you use the disable option in the config network ap-discovery nat-ip-only command. To disable AP link latency, use the config ap link-latency disable all command.

  • Do not power down Cisco WLC or any AP during the upgrade process. If you do this, the software image might get corrupted. Upgrading Cisco WLC with a large number of APs can take as long as 30 minutes, depending on the size of your network. However, with the increased number of concurrent AP upgrades supported, the upgrade time should be significantly reduced. The APs must remain powered, and Cisco WLC must not be reset during this time.

  • To downgrade from this release to Release 6.0 or an earlier release, perform either of these tasks:

    • Delete all the WLANs that are mapped to interface groups, and create new ones.

    • Ensure that all the WLANs are mapped to interfaces rather than interface groups.

  • After you perform the following functions on Cisco WLC, reboot it for the changes to take effect:

    • Enable or disable LAG

    • Enable a feature that is dependent on certificates (such as HTTPS and web authentication)

    • Add a new license or modify an existing license


      Reboot is not required if you are using Right-to-Use licenses.

    • Increase the priority of a license

    • Enable HA

    • Install the SSL certificate

    • Configure the database size

    • Install the vendor-device certificate

    • Download the CA certificate

    • Upload the configuration file

    • Install the Web Authentication certificate

    • Make changes to the management interface or the virtual interface

  • From Release 8.3 or a later release, ensure that the configuration file that you back up does not contain the < or > special characters. If either of the special characters is present, the download of the backed up configuration file fails.

Upgrading Cisco WLC Software (GUI)


Step 1

Upload your Cisco WLC configuration files to a server to back up the configuration files.


We highly recommend that you back up your Cisco WLC configuration files prior to upgrading the Cisco WLC software.

Step 2

Follow these steps to obtain Cisco Wireless software:

  1. Browse to Cisco Software Central at: https://software.cisco.com/download/navigator.html.

  2. Click Software Download.

  3. On the Download Software page, choose Wireless > Wireless LAN Controller.

    The following options are displayed. Depending on your Cisco WLC platform, select one of these options:

    • Integrated Controllers and Controller Modules

    • Mobility Express

    • Standalone Controllers

  4. Select the Cisco WLC model number or name.

  5. Click Wireless LAN Controller Software.

  6. The software releases are labeled as described here to help you determine which release to download. Click a Cisco WLC software release number:

    • Early Deployment (ED)—These software releases provide new features and new hardware platform support as well as bug fixes.

    • Maintenance Deployment (MD)—These software releases provide bug fixes and ongoing software maintenance.

    • Deferred (DF)—These software releases have been deferred. We recommend that you migrate to an upgraded release.

  7. Click the filename <filename.aes>.

  8. Click Download.

  9. Read the Cisco End User Software License Agreement and click Agree.

  10. Save the file to your hard drive.

  11. Repeat steps a through j to download the remaining file.

Step 3

Copy the Cisco WLC software file <filename.aes> to the default directory on your TFTP, FTP, or SFTP server.

Step 4

(Optional) Disable the Cisco WLC 802.11 networks.


For busy networks, Cisco WLCs on high utilization, and small Cisco WLC platforms, we recommend that you disable the 802.11 networks as a precautionary measure.

Step 5

Choose Commands > Download File to open the Download File to Controller page.

Step 6

From the File Type drop-down list, choose Code.

Step 7

From the Transfer Mode drop-down list, choose TFTP, FTP, or SFTP.

Step 8

In the IP Address field, enter the IP address of the TFTP, FTP, or SFTP server.

Step 9

If you are using a TFTP server, the default value of 10 retries for the Maximum Retries field, and 6 seconds for the Timeout field should work correctly without any adjustment. However, you can change these values, if required. To do so, enter the maximum number of times the TFTP server attempts to download the software in the Maximum Retries field and the amount of time (in seconds) for which the TFTP server attempts to download the software, in the Timeout field.

Step 10

In the File Path field, enter the directory path of the software.

Step 11

In the File Name field, enter the name of the software file <filename.aes>.

Step 12

If you are using an FTP server, perform these steps:

  1. In the Server Login Username field, enter the username with which to log on to the FTP server.

  2. In the Server Login Password field, enter the password with which to log on to the FTP server.

  3. In the Server Port Number field, enter the port number on the FTP server through which the download occurs. The default value is 21.

Step 13

Click Download to download the software to the Cisco WLC.

A message indicating the status of the download is displayed.


Ensure that you choose the File Type as Code for both the images.

Step 14

After the download is complete, click Reboot.

Step 15

If you are prompted to save your changes, click Save and Reboot.

Step 16

Click OK to confirm your decision to reboot the Cisco WLC.

Step 17

If you have disabled the 802.11 networks, reenable them.

Step 18

(Optional) To verify that the Cisco WLC software is installed on your Cisco WLC, on the Cisco WLC GUI, click Monitor and view the Software Version field under Controller Summary.

CIMC Utility Upgrade for 5520 and 8540 Controllers

The AIR-CT5520-K9 and AIR-CT8540-K9 controller models are based on Cisco UCS server C series, C220 and C240 M4 respectively. These controller models have CIMC utility that can edit or monitor low-level physical parts such as power, memory, disks, fan, temperature, and provide remote console access to the controllers.

We recommend that you upgrade the CIMC utility to Version 3.0(4d) that has been certified to be used with these controllers. Controllers that have older versions of CIMC installed are susceptible to rebooting without being able to access FlexFlash, with the result that the manufacturing certificates are unavailable, and thus SSH and HTTPS connections will fail, and access points will be unable to join. See: CSCvo33873.

The CIMC 3.0(4d) images are available at the following locations

Table 4. CIMC Utility Software Image Information


Link to Download the CIMC Utility Software Image

Cisco 5520 Wireless Controller


Cisco 8540 Wireless Controller


For information about upgrading the CIMC utility, see the "Updating the Firmware on Cisco UCS C-Series Servers" chapter in the Cisco Host Upgrade Utility 3.0 User Guide:


Updating Firmware Using the Update All Option

This section mentions specific details when using CIMC utility with Cisco 5520 or 8540 controllers. For general information about the software and UCS chassis, see Release Notes for Cisco UCS C-Series Software, Release 3.0(4) at:


Table 5. Open Caveats for Release 3.0(4d)

Caveat ID



After upgrading CIMC to 3.04d, only after power reset, UCS-based controller is coming up.


Not able to logon to the CIMC GUI with the username and password that are configured from the controller.

Table 6. Resolved Caveats for Release 3.0(4d)

Caveat ID



Symptom: The system will stop working or reboot during OS operation with PROCHOT, MEMHOT, and DMI Timeout-related events reported in the System Event Log (SEL).

Conditions: C220-M4 or C240-M4

Workaround: No workaround is available.

This bug fix changes the default BIOS option for ASPM (Active State Power Management) from 'L1 only' to 'Disabled', and the ASPM setting can no longer be modified. This change was made to help increase system stability and eliminate some system crash scenarios.


Symptom: The system will stop working or reboot during OS operation with PROCHOT, MEMHOT, and DMI Timeout-related events reported in the System Event Log (SEL).

Conditions: C220-M4 or C240-M4

Workaround: No workaround is available.

This bug fix changes the BIOS option "Package C-State limit" default value from C6 Retention to C0/C1 to help increase system stability and eliminate some crash scenarios.

Once upgraded, reset the BIOS settings to default or manually change Package C-State limit to C0/C1.

Interoperability with Other Clients

This section describes the interoperability of Cisco WLC software with other client devices.

The following table describes the configuration used for testing the client devices.

Table 7. Test Bed Configuration for Interoperability

Hardware or Software Parameter

Hardware or Software Configuration Type


Cisco WLC

Cisco 5520 Wireless Controller

Access Points

AIR-CAP3802E-B-K9, AIR-AP1852E-B-K9, AIR-CAP3602E-A-K9


802.11ac, 802.11a, 802.11g, 802.11n (2.4 GHz or 5 GHz)




Cisco ACS 5.3, Cisco ISE 2.2, Cisco ISE 2.3

Types of tests

Connectivity, traffic (ICMP), and roaming between two APs

The following table lists the client types on which the tests were conducted. Client types included laptops, handheld devices, phones, and printers.

Table 8. Client Types

Client Type and Name



Intel 6300
Intel 6205
Intel 7260
Intel 7265
Intel 3160
Intel 8260
Broadcom 4360
Dell 1520/Broadcom 43224HMS
Dell 1530 (Broadcom BCM4359)
Dell 1560
Dell 1540
Samsung Chromebook 55.0.2883.103
HP Chromebook 55.0.2883.103
MacBook Pro OSX 10.11.6
MacBook Air OSX 10.11.5
Macbook Pro with Retina Display OSX 10.12
Macbook New 2015 OSX 10.12.4


HP Color LaserJet Pro M452nw


Apple iPad2 iOS 10
Apple iPad3 iOS 10
Apple iPad mini with Retina display iOS 10
Apple iPad Air iOS 10
Apple iPad Air 2 iOS 11
Apple iPad Pro iOS 11
Samsung Galaxy Tab Pro SM-T320 Android 4.4.2
Samsung Galaxy Tab 10.1- 2014 SM-P600 Android 4.4.2
Samsung Galaxy Note 3 - SM-N900 Android 5.0
Microsoft Surface Pro 3 Windows 8.1
Driver: 15.68.3093.197
Microsoft Surface Pro 2 Windows 8.1
Driver: 14.69.24039.134
Microsoft Surface Pro 4 Windows 10
Driver: 15.68.9040.67
Google Nexus 9 Android 6.0.1
Google 10.2" Pixel C Andriod 7.1.1
Toshiba Thrive AT105 Android 4.0.4

Mobile Phones

Cisco 7926G CP7925G-
Cisco 7925G-EX CP7925G-
Cisco 8861 Sip88xx.10-2-1-16
Cisco-9971 sip9971.9-4-1-9
Cisco-8821 sip8821.11-0-3ES2-1
Apple iPhone 4S iOS 10.2.1
Apple iPhone 5 iOS 10.2.1
Apple iPhone 5s iOS 10.2.1
Apple iPhone 5c iOS 10.3.1
Apple iPhone 6 iOS 10.3.1
Apple iPhone 6 Plus iOS 10.3.1
Apple iPhone 6s iOS 10.2.1
Apple iPhone 7 iOS 11.0.3
Apple iPhone X iOS 11.1.2
HTC One Android 5.0
OnePlusOne Android 4.3
OnePlus3 Android 6.0.1
Samsung Galaxy S4 T-I9500 Android 5.0.1
Sony Xperia Z Ultra Android 4.4.2
Nokia Lumia 1520 Windows Phone 8.10.14219.341
Google Nexus 5 Android 6.0.1
Google Nexus 5X Android 8.0.0
Google Pixel Android 7.1.1
Samsung Galaxy S5-SM-G900A Android 4.4.2
Samsung Galaxy S III Android 4.3
Samsung Galaxy S4 Android 5.0.1
Samsung Galaxy S5 Android 4.4.2
Samsung Galaxy S6 Android 7.0
Samsung Galaxy S7 Android 7.0
Samsung Galaxy Nexus GTI9200 Android 4.4.2
Samsung Galaxy Mega SM900 Android 4.4.2
LG G4 Android 5.1
Xiaomi Mi 4c Android 5.1
Xiaomi Mi 4i Android 6.0.1

Key Features Not Supported in Controller Platforms

This section lists the features that are not supported on various controller platforms:


In a converged access environment that has controllers running AireOS code, High Availability Client SSO and native IPv6 are not supported.

Key Features Not Supported in Cisco 3504 WLC

  • Cisco WLAN Express Setup Over-the-Air Provisioning

  • Mobility controller functionality in converged access mode

  • VPN Termination (such as IPsec and L2TP)

Key Features Not Supported in Cisco 5520 and 8540 WLCs

  • Internal DHCP Server

  • Mobility controller functionality in converged access mode

  • VPN termination (such as IPsec and L2TP)

  • Fragmented pings on any interface

Key Features Not Supported in Cisco Virtual WLC

  • Cisco Umbrella

  • Domain-based ACLs

  • Internal DHCP server

  • Cisco TrustSec

  • Access points in local mode

  • Mobility or Guest Anchor role

  • Wired Guest

  • Multicast


    FlexConnect locally switched multicast traffic is bridged transparently for both wired and wireless on the same VLAN. FlexConnect APs do not limit traffic based on IGMP or MLD snooping.

  • FlexConnect central switching in large-scale deployments


    • FlexConnect central switching is supported in only small-scale deployments, wherein the total traffic on controller ports is not more than 500 Mbps.

    • FlexConnect local switching is supported.

  • Local switching on Microsoft Hyper-V deployments

  • AP and Client SSO in High Availability

  • PMIPv6

  • Datagram Transport Layer Security (DTLS)

  • EoGRE (Supported only in local switching mode)

  • Workgroup bridges

  • Client downstream rate limiting for central switching

  • SHA2 certificates

  • Controller integration with Lync SDN API

  • Cisco OfficeExtend Access Points

Key Features Not Supported in Access Point Platforms

This section lists the features that are not supported on various Cisco Aironet AP platforms:

Key Features Not Supported in Cisco Aironet 1540, 1560, 1800i, 1810 OEAP, 1810W, 1815, 1830, 1850, 2800, and 3800 Series APs

For detailed information about feature support on Cisco Aironet Wave 2 APs, see:


Table 9. Key Features Not Supported in Cisco Aironet 1540, 1560, 1800i, 1810 OEAP, 1810W, 1815, 1830, 1850, 2800, and 3800 Series APs

Operational Modes

  • Autonomous Bridge and Workgroup Bridge (WGB) mode

  • Mesh mode


    Supported on 1540 and 1560 APs.

  • Flex + Mesh

  • LAG behind NAT or PAT environment


  • Full Cisco Compatible Extensions (CCX) support

  • Rogue Location Discovery Protocol (RLDP)

  • Telnet

  • Internet Group Management Protocol (IGMP)v3


  • CKIP, CMIC, and LEAP with Dynamic WEP

  • Static WEP for CKIP

  • WPA2 + TKIP

    WPA +TKIP and TKIP + AES protocols are supported.

Quality of Service

Cisco Air Time Fairness (ATF)

FlexConnect Features

  • Split Tunneling

  • PPPoE

  • Multicast to Unicast (MC2UC)

  • Traffic Specification (TSpec)

    • Cisco Compatible eXtensions (CCX)

    • Call Admission Control (CAC)

  • VSA/Realm Match Authentication

  • Link aggregation (LAG)

  • SIP snooping with FlexConnect in local switching mode


For Cisco Aironet 1850 Series AP technical specifications with details on currently supported features, see the Cisco Aironet 1850 Series Access Points Data Sheet.

Key Features Not Supported in Cisco Aironet 1800i, 1810 OEAP, and 1810W Series APs

Table 10. Key Features Not Supported in Cisco Aironet 1800i, 1810 OEAP and 1810W Series APs

Operational Modes

Cisco Mobility Express

FlexConnect Features

Local AP authentication

Location Services

Data RSSI (Fast Locate)

Key Features Not Supported in Cisco Aironet 1830, 1850, and 1815 Series APs

Table 11. Key Features Not Supported in Cisco Aironet 1830, 1850, and 1815 Series APs

Operational Modes

Mobility Express is not supported in Cisco 1815t APs.

FlexConnect Features

Local AP Authentication

Location Services

Data RSSI (Fast Locate)

Key Features Not Supported in Mesh Networks

  • Load-based call admission control (CAC). Mesh networks support only bandwidth-based CAC or static CAC

  • High availability (Fast heartbeat and primary discovery join timer)

  • AP acting as supplicant with EAP-FASTv1 and 802.1X authentication

  • AP join priority (Mesh APs have a fixed priority)

  • Location-based services

Key Features Not Supported in Cisco Aironet 1540 Mesh APs

  • Dynamic Mesh backhaul data rate.


    We recommend that you keep the Bridge data rate of the AP as auto.

  • Background scanning

  • Noise-tolerant fast convergence

  • Flex+Mesh

Key Features Not Supported on Cisco Aironet 1560 Mesh APs

  • Noise-tolerant fast convergence

  • Flex+Mesh


Open Caveats

Table 12. Open Caveats

Caveat ID Number



WLC should use port MAC for non LAG and box MAC for LAG


Smart Licensing "Next Communication Attempt" pre-dates the Controller time after reboot


3700 AP stopped working with Memory Allocation Failure CAPWAP


MAP gigabit port being learnt in mesh management VLAN instead of client VLAN


2800AP is not able to process the ARP Response


Clients cannot pass traffic with 1810W MAB FlexConnect local switching RLAN


1810W AP stops to send data frame intermittently


AP with FlexConnect AVC visibility Tx frames with sequence jumps causing client to not process packets


WLC with Internal DHCP not sending NAK


WGB client not getting IP address from the VLAN returned as AAA override


Cisco 3800 AP FW stopped working on Radio 0


AP console display logs "DTX DUMP"


Cisco Wave 2 AP uses invalid CAPWAP data keep-alive source port


Kernel Panic with PC at skb_release_data+0xe0/0x230


AP702w Continuous Pak ownership errors /w Freeing pak:xx in the radio TX or RX ring, owner:FACD1010


aIOS: Wireless client cannot communicate each other with dynamic VLAN


d0: *** sensord died (src/dspm_main.c:1662/0) - slot 0 ***


Radio reset with transmitter seems to have stopped, FST06


External MDNS resolution fails with WLC 'link local bridging' enabled


When adding a member to the static RF Group, WLC shows group size has exceeded


AP 2800: FIQ stopped working


ATF Mesh MIB Memory Leak observed during SNMPWALK from Root


1832 Rx not working with AP not responding to probe requests


DFS blacklist timer is reset if AP connection to WLC flaps.


Wave 2 AP needs to send XID broadcast on client association for FlexConnect local switching


Wave 1 APs last reload reason shows "Invalid image opcode"


Too many channel changes on XOR 5 GHz


AP2800 cannot convert CAPWAP DSCP to 802.11e UP value correctly


3800/2800/1832 FlexConnect APs stop redirecting CWA clients after WLAN change


WLC Local Policy: Client local profiling assigns incorrect interface to client


Fan failure errors seen after upgrade to build


OEAP drops wired client traffic after N+1 failover


New Mobility with Cisco Catalyst 3650 Switch as MA and Cisco 5520 WLC as Anchor: Guest users cannot reach DG


RRM stall; 3702 RF neighbor list empty on both WLC and AP on 5 GHz


WLC stopped working at about 80 to 85 % memory utilization


1852 series APs stopped working due to Kernel Panic


WLC does not respond to TCP SYC message from Linux Server to establish SSH session


3800 AP: Client EAP TLS not working with Zebra RF Gun which sends certificate in fragments


High QBSS, beacon stop, radio reset seen on after upgrade


DNS snooping not working for URL ACL after upgrade to Release 8.5


2800 AP: FlexConnect AP WLAN-VLAN mapping on AP does not match with GUI configuration


Locally generated webadmin certificate shows as 3rd party after upgrade


Rogue BSSID containment count display incomplete


TxFSM stuck on Radio 0 with TCQVerify patch


WLC clients not getting IPv6 Global addresses under scale scenarios


Wave 1 AP always sends RTS at 6 data rate when data rate is supported


Standby 8540 WLC reloads unexpectedly with rmgrMain due to IPC timeout


Wave 1 APs stopped working due to bad CPQ


8510 DP0 CORE 9 DP unresponsive


Config missing after WLC failover


AP fails to join the WLC when QA country code is used (–E AP)


Release 8.5 loses neighbor AP field on WLC GUI; neighbor and rogue APs


Cisco Wave 2 APs go offchannel if scan deferral value is greater than 255 milliseconds.


HA pair does not sync VLAN support configuration for mesh APs


AP stops forwarding IPv6 Router Advertisements to random clients


702w AP: Radio resets with ath_ACIF_radio_dead message


AP1562D to AP1562D bridge does not transmit fragmented traffic


2700 AP runs out of buffers for bpid 2


Client Stats and RSSI/SNR reset for clients when Accounting is disabled on WLANs


Standby WLC constinuously reboots with "Reason: XMLs were not trasferred from Active to Standby"


[FALL WLC BUNDLE] NO CVE Cisco Wireless LAN Controller Privilege Escalation Vulnerability


3504 WLC stopped working


Client unable to reach RUN state on anchor WLC with 802.1x + ISE NAC


AP is not sending TCP fragments over the air


WLC processes SNMP requests but does not transmit responses


WLC is not sending proper VSA list at acct-stop when client moves to another SSID


New Mobility Anchor Controller unexpectedly reboots with Task Name: mcListen


WLC stops processing web-auth.


1560 RAP after reboot will lose the VLAN support configuration


SSO Secondary does not boot after upgrade


IW3702 on auto-bridge mode is not preserving channel width that is more than 20 MHz


SDA-Wireless AAA Override VNID ID is lost when roaming from one AP Group to another


1832 AP stopped working with "PC is at __napi_complete+0x28/0x60"


Creation Time of Local Net User set to Jan 1 00:00:00 1970


WLC remote access failing after upgrade


Cisco 2802 AP stopped working due to an FIQ/NMI reset and no backtraces are generated


Client cannot pass IPv6 traffic for 15 seconds after associating


Hyperlocation disabled, but WLC overfloods log with hyperlocation messages


WLC becomes inaccessible via HTTPS when creating CSR for webauth on Cisco vWLC


Cisco Wireless LAN Controller Cross-Site Scripting Vulnerability


Cisco Wireless LAN Controller Software Information Disclosure Vulnerability

Resolved Caveats

Table 13. Resolved Caveats

Caveat ID Number



Need a way to show the client exclusion list on the AP


RxSop values configured from CLI, changes back to "AUTO"


Selective client packet capture support for 2800 and 3800 series APs


WLC: Traceback pattern #2 in apfProcessAssocReq


AP1830: The show version command shows old software version as "AP running image" and longer up-time


Cisco Access Point 802.11r Fast Transition Denial of Service Vulnerability


FlexConnect local switching standalone mode EoGRE client connecting as simple client


New Mobility member status shows as unknown when editing mobility member IP address


Dynamic interface template fails to apply on Cisco WLC with DHCP Option 82 setting


Cisco WLC Control And Provisioning of Wireless Access Points Information Disclosure


Cisco WLC Control &amp; Provisioning of Wireless Access Points Protocol Denial of Service Vulnerability


Cisco Wireless LAN Controller Directory Traversal Vulnerability


Provision 128 characters LMA name in PMIPv6 with IP address, CLI cannot display it


SDA: WLC stopped working at emWeb while configuring Fabric


Webauth scaling improvements: Fix problem with GUI going unresponsive with HTTPS redirect


1815 AP is not sending all traffic after period under load


Webauth on MAC authentication failure is not part of the show tech-support command.


FIQ/NMI Reset AP2800 PC __pci_bus_size_bridges+0x274/0x768 LR warn_slowpath_common+0x58/0x94


WLC "in sync" with NTP while authentication is ignored with invalid keys


Incorrect values of RSSI, SNR are being reported to WSA


3700 AP Tx jammed and radio reloads unexpectedly


Cisco 1700, 2700, and 3700 AP log incorrect PHY in sniffer mode for 802.11ac


Deleting one SSID will affect another SSID created on the same radio interface


PMTU change to 1500 from a lesser value is not reflected in AP


SNMP walk on bsnMeshNodeTable returns no data for IW3700 AP in Flex+Bridge Mode


DHCP Proxy enabled and removing DHCP Server Info from Dynamic interface disables WLAN


1542 AP not joining WLC with Costa Rica (CR) Country


3702 AP fails to correctly map data traffic to SGACL


2800 AP in sniffer mode is missing huge amount of data packets


Cisco Wave 2 APs in FlexConnect mode do not forward DHCP NAK to wireless client


TrustSec not working; Environment Data download failing on Cisco 3504 WLC platform


1830 AP Triggered FW assert for radio failure (beacons stuck)


Buff Leak messages on AP console again when AP changes channel


Wave 1 APs in sniffer mode show incorrect TID in captured traffic


Wave 1 AP does not send k9w8 in LLDP Packets leading to false classification


HA osapi_file.c:1030 Failed to open the file, %OSAPI-3-SOCK_SEND_FAILED: [SA]osapi_support


Cisco 1810W AP reloads unexpectedly over a kernel panic


3802 AP kernel panic PC is at skb_release_data+0xe0/0x230


WLAN session timeout does not default to dot1x reauth timeout when webauth is enabled via the GUI


2800/3800 AP: Command timeout at 0x8000 in FW


Cisco WLC reloads unexpectedly on Dot1x_NW_MsgTask due to Dynamic VLAN feature handling for 702 AP


Cisco 1800 AP: Radio failure and firmware freeze


AP syslog config does not change level from AP syslog to informational; it remains in emergencies


2802E AP with Radio1 stopped working


1542 AP stopped working in Flex + Mesh mode


Cisco 1852/1832 AP: AP data traffic stall in HD environment


TxFSM stuck on Radio 0 with new signature


Standby WLC reloads unexpectedly on spamApTask


AP: Sending EAP packets unencrypted at session timeout


Cisco WLC stopped working


Proxy ARP always enabled in Beacon IE for FlexConnect mode AP irrespective of ARP cache config


Cisco 1815W SnifferMode AP beacons allows clients to join and black-hole traffic


WLC SSH session exits with show mesh commands in Release 8.6 and later releases


Cisco 8540 WLC reloads unexpectedly on Task Name: emWeb on


WLC GUI/SSH not accessible - emweb consuming 100% cpu


WLC System Crash with apfRogueTask_0


WLC sends 802.11r in beacons for WebAuth SSID (L2 open security) and client 802.11r roaming fails


AP1815I: No response from wired side


Cisco 2800 and 3800 APs joining the WLC in FlexConnect mode fail to update Flex ACL in group policies


Cisco Aironet 1560, 1800, 2800 and 3800 Series Access Point Denial of Service Vulnerability


AP1572 shows incorrect regulatory power level for Qatar domain


Cisco 1562 AP limited to 54 Mbps in 2.4-GHz backhaul


Incorrect count for cLApWlanStatsOnlineUserNum when SSID is changed


MAP changes its statically assigned non-backhaul channel after it rejoins RAP


Decrypt errors on 1532 AP


1852 AP: Observed a radio core on loading the image, 5G @0x0099B20C,


FT Auth Response is incorrect when PMF is enabled


Management Via Wireless not working


Config logging trace information setting not restored correctly


XML parse error during booting and WLC stopped working


2802E AP without dart connector being considered as RRF candidate and assigned 5-GHz role


WLC stopped working with Task Name: emWeb due to DATACORRUPTION-DATAINCONSISTENCY


WLC 3504 flooding with emc1403 0-007c: Read failure of Status Register error msg


WLC reuses Acct-Session-Id when client changes WLANs


WLC stopped working with Task Name: ccxL2RoamTask 0x162ad5d l2roamGetRrmNeighborList+77


WLC stopped working with Task Name: emWeb osapiMsgQueueDetailClear+42/usmDbMsgQueueDetailClear+27


Cannot change the role of XOR radio from Auto to Manual on 2802E AP without DART


3504 WLC stopped working with taskname 'osapiReaper'


WLC stopped working with Task Name: emWeb osapiMutexDumpAllLocked+890 after timezone setting of AP


1562 MAP is not forwarding BPDUs sent by the RAP when using Ethernet bridging


1832 and 1852 APs stopped working due to memory leak in 4k slab with Spectrum Intelligence enabled


Cisco Wireless LAN Controller Software GUI Privilege Escalation Vulnerability


1815W AP continuously logs; missing case for op class XXX in ieee80211_mbo_operating_class_to_chan


WCPD stopped working with 1815w AP in RlanportControl element


Cisco 8540 WLC Data Plane reloads unexpectedly on __udp_input


WLC delay packets due to high DP packet buffers in use


AP stopped working when running the show controller d1 atf cfs client command


Cisco WLC stopped working due to clientTroubleShootingTask


1562 MAP not sending Air Quality reports to WLC


Cisco WLC stopped working when the show run-config command is run


1815 AP: idle clients are not removed after 24 hours


Cisco WLC is returning values for 'cLSiIdrDeviceSignature' OID with a length greater than 32 bytes


Cisco WLC warning messages DP Packet pool and WQE pool is not normal


Webauth redirection not working with guest anchor WLAN


1560 AP will create a loop when failing over to wireless and wired connection comes back


WLC stops working in loop while trying to download old configuration from TFTP


1562-I AP failed to decode discovery response and stopped working


Cisco WLC blocks client MAC authentication for incorrect WLAN profile


Cisco WLC stopped working with EoGRE rule added in CLI


show traplog command: Client Enhanced Traps Sent are not included in Number of Traps Since Last Reset


WLC stopped working while executing config client deauthenticate mac command


ASCOM and Cisco 8821 phones unable to make calls on 3802 AP


VLAN priority tag inside the EoGRE packet set to non-zero when 802.1p set to none


Cisco WLC is incorrectly returning '5' for snmpwalk on bsnMobileStationApMode OID


Cisco 5520 WLC experiences fatal dataplane issue at broffu_fp_dapi_cmd.c:4588


Layer 3 roam fails back to L2 Anchor with MAC Filtering MAB


Cisco 2800 AP consistently reboots around 1 second after joining the Cisco WLC


Cisco 2802 and 3802 APs cannot connect with 100-Mbps LAN speed


EoGRE client does not receive IP and stays in DHCP_REQ


Cisco WLC NMSP status unstable when WLC is added to 3 CMX


Cisco 5520 WLC HA pair stops working on broffu_SocketReceive


Cisco 3504 secondary WLC stops working repeatedly


Standby Cisco WLC continuously reboots after upgrade