Release Notes for Cisco Embedded Wireless Controller on Catalyst Access Points, Cisco IOS XE Cupertino 17.9.x


Note

The documentation set for this product strives to use bias-free language. For purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on standards documentation, or language that is used by a referenced third-party product.


Introduction to Cisco Embedded Wireless Controller on Catalyst Access Points

The Cisco Embedded Wireless Controller on Catalyst Access Points is a version of the Cisco IOS XE-based controller software on Catalyst access points. In this solution, a Catalyst access point (AP) that is running the Cisco Embedded Wireless Controller on Catalyst Access Points software, is designated as the primary AP. Other APs, referred to as subordinate APs, associate to this primary AP.

The Cisco Embedded Wireless Controller on Catalyst Access Points provides enterprise-level WLAN features while maintaining operational simplicity and affordability. This solution is targeted at small and medium-sized business (SMB) customers or distributed enterprises, and can be run at single site deployments.

  • The controllers come with high availability (HA) and seamless software updates. This keeps your services on always, both during planned and unplanned events.

  • The deployment can be managed using a mobile application, Cisco Digital Network Architecture (DNA) Center, Netconf/Restconf, web-based GUI, or CLI.

What's New in Cisco Embedded Wireless Controller on Catalyst Access Points, Cisco IOS XE Cupertino 17.9.2

There are no new features in this release.

What's New in Cisco Embedded Wireless Controller on Catalyst Access Points, Cisco IOS XE Cupertino 17.9.1

Table 1. New and Modified Software Features

Feature Name

Description and Documentation Link

Zero Wait Dynamic Frequency Selection

When an access point (AP) moves to Dynamic Frequency Selection (DFS) channel, a service outage can occur. This feature helps to avoid service outages in regulatory domains. As of now, the US and Europe are the only supported domains.

For more information, see the chapter Zero Wait Dynamic Frequency Selection.

Mesh Backhaul RRM Support

From this release onwards, RRM DCA runs on mesh backhaul, in the auto mode, when you configure the wireless mesh backhaul rrm auto-dca command. For APs that do not have dedicated (RHL) radios, DCA is triggered by running commands in the privilege EXEC mode. Mesh RRM DCA runs in the background for RHL radio enabled APs.

The following commands are introduced:

  • ap dot11 {24ghz | 5ghz | 6ghz} rrm channel-update mesh

  • ap dot11 {24ghz | 5ghz | 6ghz} rrm channel-update mesh bridge-group

  • ap name Cisco-ap-name dot11 {24ghz | 5ghz | 6ghz} rrm channel update mesh

  • show wireless mesh rrm dca status

  • wireless mesh backhaul rrm auto-dca

For more information, see the chapter Mesh Access Points.

RUM Report Throttling

For all topologies where the product instance initiates communication, the minimum reporting frequency is throttled to one day. This means the product instance does not send more than one RUM report a day.

The affected topologies are: Connected Directly to CSSM, Connected to CSSM Through CSLU (product instance-initiated communication), CSLU Disconnected from CSSM (product instance-initiated communication), and SSM On-Prem Deployment (product instance-initiated communication).

This resolves the problem of too many RUM reports being generated and sent for certain licenses. It also resolves the memory-related issues and system slow-down that was caused by an excessive generation of RUM reports.

You can override the reporting frequency throttling, by entering the license smart sync command in privileged EXEC mode. This triggers an on-demand synchronization with CSSM or CSLU, or SSM On-Prem, to send and receive any pending data.

RUM report throttling also applies to the Cisco IOS XE Amsterdam 17.3.6 and later releases of the 17.3.x train, and Cisco IOS XE Bengaluru 17.6.4 and later releases of the 17.6.x train. From Cisco IOS XE Cupertino 17.9.1, RUM report throttling is applicable to all subsequent releases.

Interactive Help

The Cisco Catalyst 9800 Series Wireless Controller GUI features an interactive help that walks you through the GUI and guides you through complex configurations.

You can start the interactive help in the following ways:

  • By hovering your cursor over the blue flap at the right-hand corner of a window in the GUI and clicking Interactive Help.

  • By clicking Walk-me Thru in the left pane of a window in the GUI.

  • By clicking Show me How that is displayed in various parts of the GUI. Clicking Show me How triggers a specific interactive help that is relevant to the context you are in.

    For instance, Show me How in Configure > AAA walks you through the various steps for configuring a RADIUS server. Choose Configuration> Wireless Setup > Advanced and click Show me How to trigger the interactive help that walks you through the steps relating to various kinds of authentication.

The following features have an associated interactive help:

  • Configuring AAA

  • Configuring FlexConnect Authentication

  • Configuring 802.1x Authentication

  • Configuring Local Web Authentication

  • Configuring OpenRoaming

  • Configuring Mesh APs


Note

If the WalkMe launcher is unavailable on Safari, modify the settings as follows:

  1. Navigate to Preferences > Privacy.

  2. In the Website tracking section, uncheck the check box to disable Prevent cross-site tracking.

  3. On the Cookies and website data section, uncheck the check box to disable Block all cookies.


Supported Cisco Access Point Platforms

The following Cisco access points are supported in the Cisco Embedded Wireless Controller on Catalyst Access Points network. Note that the APs listed as primary APs can also function as subordinate APs.

Table 2. Cisco APs Supported in Cisco Embedded Wireless Controller on Catalyst Access Points

Primary AP

Subordinate AP

Cisco Catalyst 9115 Series

Cisco Catalyst 9117 Series

Cisco Catalyst 9120 Series

Cisco Catalyst 9124AXE/I/D

Cisco Catalyst 9130

Cisco Catalyst 9105AXI

Cisco Aironet 1540 Series

Cisco Aironet 1560 Series

Cisco Aironet 1815i

Cisco Aironet 1815w

Cisco Aironet 1830 Series

Cisco Aironet 1840 Series

Cisco Aironet 1850 Series

Cisco Aironet 2800 Series

Cisco Aironet 3800 Series

Cisco Aironet 4800 Series

Cisco Catalyst 9115 Series

Cisco Catalyst 9117 Series

Cisco Catalyst 9120 Series

Cisco Catalyst 9124AXE/I/D

Cisco Catalyst 9130

Cisco Catalyst 9105AXW

Cisco Catalyst 9105AXI

Cisco Catalyst Industrial Wireless 6300 Heavy Duty Series Access Points

Cisco 6300 Series Embedded Services Access Points


Note

The following APs are not supported:

  • Cisco Catalyst 9136 Access Points

  • Cisco Catalyst 9166 Series Access Points

  • Cisco Catalyst 9164 Series Access Points

  • Cisco Catalyst 9162 Series Access Points


Table 3. Image Types and Supported APs in Cisco Embedded Wireless Controller on Catalyst Access Points

Image Type

Supported APs

ap1g4

Cisco Aironet 1810 Series

Cisco Aironet 1830 Series

Cisco Aironet 1850 Series

ap1g5

Cisco Aironet 1815i

Cisco Aironet 1815w

Cisco Aironet 1540 Series

Cisco Aironet 1850 Series

ap1g6

Cisco Catalyst 9117 Series

ap1g6a

Cisco Catalyst 9130

Cisco Catalyst 9124AXE/I/D

ap1g7

Cisco Catalyst 9115 Series

Cisco Catalyst 9120 Series

ap1g8

Cisco Catalyst 9105 Series

ap3g3

Cisco Aironet 2800 Series

Cisco Aironet 3800 Series

Cisco Aironet 4800 Series

Cisco Aironet 1560 Series

Cisco Catalyst Industrial Wireless 6300 Heavy Duty Series Access Points

Cisco 6300 Series Embedded Services Access Points

Maximum APs and Clients Supported

Table 4. Scale Supported in Cisco EWC Network

Primary AP Model

Maximum APs Supported

Maximum Clients Supported

Cisco Catalyst 9105 AWI

50

1000

Cisco Catalyst 9115 Series

50

1000

Cisco Catalyst 9117 Series

50

1000

Cisco Catalyst 9120 Series

100

2000

Cisco Catalyst 9124AXE/I/D

100

2000

Cisco Catalyst 9130

100

2000


Note

If 25 to 100 APs have joined the EWC network, the maximum clients on the EWC internal AP is limited to 20.


Compatibility Matrix

The following table provides software compatibility information:

Table 5. Compatibility Information

Cisco Embedded Wireless Controller on Catalyst Access Points

Cisco ISE

Cisco CMX

Cisco DNA Center

Cupertino 17.9.x

3.0

2.7

2.6

2.4

2.3

10.6.3

10.6.2

10.6

10.5.1

See Cisco DNA Center Compatibility Information

Supported Browsers and Operating Systems for Web UI


Note

The following list of Supported Browsers and Operating Systems is not comprehensive at the time of writing this document and the behavior of various browser for accessing the GUI of the EWC is as listed below.


Table 6. Supported Browsers and Operating Systems

Browser

Version

Operating System

Status

Workaround

Google Chrome

77.0.3865.120

macOS Mojave Version 10.14.6

Works

Proceed through the browser warning.

Safari

13.0.2 (14608.2.40.1.3)

macOS Mojave Version 10.14.6

Works

Proceed through the browser warning.

Mozilla Firefox

69.0.1

macOS Mojave Version 10.14.6

Works only if exception is added.

Set the exception.

Mozilla Firefox

69.0.3

macOS Mojave Version 10.14.6

Works only if exception is added.

Set the exception.

Google Chrome

77.0.3865.90

Windows 10 Version 1903 (OS Build 18362.267)

Works

Proceed through the browser warning.

Microsoft Edge

44.18362.267.0

Windows 10 Version 1903 (OS Build 18362.267)

Works

Proceed through the browser warning.

Mozilla Firefox

68.0.2

Windows 10 Version 1903 (OS Build 18362.267)

Works

Proceed through the browser warning.

Mozilla Firefox

69.0.3

Windows 10 Version 1903 (OS Build 18362.267)

Works only if exception is added.

Set the exception.

Google Chrome

78.0.3904.108

macOS Catalina 10.15.1

Does not work

NA

Upgrading the Controller Software

This section covers the various aspects of upgrading the controller software.


Note

Before converting from CAPWAP to embedded wireless controller (EWC), ensure that you upgrade the corresponding AP with the CAPWAP image in Cisco AireOS Release 8.10.105.0. If this upgrade is not performed, the conversion will fail.


Finding the Software Version

The following table lists the Cisco IOS XE 17.9.x software for Cisco Embedded Wireless Controller on Catalyst Access Points.

Choose the appropriate AP software based on the following:

  • Cisco Embedded Wireless Controller on Catalyst Access Points software to be used for converting the AP from an unified wireless network CAPWAP lightweight AP to a Cisco Embedded Wireless Controller on Catalyst Access Points-capable AP (primary AP)

  • AP software image bundle to be used either for upgrading the Cisco Embedded Wireless Controller on Catalyst Access Points software on the primary AP or for updating the software on the subordinate APs or both

Prior to ordering Cisco APs, see the corresponding ordering guide for your Catalyst or Aironet access point.

Table 7. Cisco Embedded Wireless Controller on Catalyst Access Points Software

Primary AP

AP Software for Conversion from CAPWAP to Cisco EWC

AP Software Image Bundle for Upgrade

AP Software in the Bundle

Cisco Catalyst 9115 Series

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

ap1g7

Cisco Catalyst 9117 Series

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

ap1g6

Cisco Catalyst 9120 Series

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

ap1g7

Cisco Catalyst 9124AXE/I/D

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

ap1g6a

Cisco Catalyst 9130

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

C9800-AP-universalk9.17.09.02.zip

C9800-AP-universalk9.17.09.01.zip

ap1g6a

Guidelines and Restrictions

Internet Group Management Protocol (IGMP)v3 is not supported on Cisco Aironet Wave 2 APs.

Embedded Wireless Controller SNMP configuration is supported in DNAC.

High memory usage on AP running Embedded Wireless Controller. Enabling crash kernel on the AP consumes additional memory on the AP. Hence, if crash kernel is enabled, the overall memory usage of the device will increase and will impact the scale numbers. On Cisco Catalyst 9130 Access Points, the memory consumption is a high of 128 MB.

During the EWC HA pair selection, after a power outage, the standby AP fails to come up in the new EWC HA pair. Another EWC capable AP becomes the standby AP and fails to come up as well. To avoid this situation, ensure that the same IP address is enforced on the active or standby APs during HA pair selection.

Interoperability with Clients

This section describes the interoperability of the controller software with client devices.

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

Table 8. Test Configuration for Interoperability

Hardware or Software Parameter

Hardware or Software Type

Release

Cisco IOS XE Cupertino 17.9.x

Access Points

  • Cisco Aironet Series Access Points

    • 1540

    • 1560

    • 1815i

    • 1815w

    • 1830

    • 1840

    • 1850

    • 2800

    • 3800

    • 4800

  • Cisco Catalyst 9105AX Access Points

  • Cisco Catalyst 9115AX Access Points

  • Cisco Catalyst 9117AX Access Points

  • Cisco Catalyst 9120AX Access Points

  • Cisco Catalyst 9124AXE/I/D Access Points

  • Cisco Catalyst 9130AX Access Points

Radio

  • 802.11ax

  • 802.11ac

  • 802.11a

  • 802.11g

  • 802.11n (2.4 GHz or 5 GHz)

Security

Open, PSK (WPA2-AES), 802.1X (WPA2-AES) (EAP-FAST, EAP-TLS), WPA3.

Cisco ISE

See Compatibility Matrix.

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, hand-held devices, phones, and printers.

Table 9. Client Types

Client Type and Name

Driver / Software Version

Wi-Fi 6 Devices (Mobile Phone and Laptop)

Apple iPhone 11 iOS 14.1

Apple iPhone SE 2020

iOS 14.1
Dell Intel AX1650w Windows 10 ( 21.90.2.1)
DELL LATITUDE 5491 (Intel AX200) Windows 10 Pro (21.40.2)
Samsung S20 Android 10
Samsung S10 (SM-G973U1) Android 9.0 (One UI 1.1)
Samsung S10e (SM-G970U1) Android 9.0 (One UI 1.1)
Samsung Galaxy S10+ Android 9.0

Samsung Galaxy Fold 2

Android 10

Samsung Galaxy Flip Z

Android 10

Samsung Note 20

Android 10

Laptops

Acer Aspire E 15 E5-573-3870 (Qualcomm Atheros QCA9377) Windows 10 Pro (12.0.0.832)
Apple Macbook Air 11 inch OS Sierra 10.12.6
Apple Macbook Air 13 inch OS Catalina 10.15.4
Apple Macbook Air 13 inch OS High Sierra 10.13.4
Macbook Pro Retina OS Mojave 10.14.3
Macbook Pro Retina 13 inch early 2015 OS Mojave 10.14.3

Dell Inspiron 2020 Chromebook

Chrome OS 75.0.3770.129

Google Pixelbook Go

Chrome OS 84.0.4147.136

HP chromebook 11a

Chrome OS 76.0.3809.136

Samsung Chromebook 4+

Chrome OS 77.0.3865.105

DELL Latitude 3480  (Qualcomm DELL wireless 1820) Win 10 Pro (12.0.0.242)
DELL Inspiron 15-7569 (Intel Dual Band Wireless-AC 3165) Windows 10 Home (18.32.0.5)
DELL Latitude E5540 (Intel Dual Band Wireless AC7260) Windows 7 Professional (21.10.1)
DELL XPS 12 v9250 (Intel Dual Band Wireless AC 8260 ) Windows 10 (19.50.1.6)
DELL Latitude 5491 (Intel AX200) Windows 10 Pro (21.40.2)
DELL XPS Latitude12 9250 (Intel Dual Band Wireless AC 8260) Windows 10 Home (21.40.0)

Lenovo Yoga C630 Snapdragon 850 (Qualcomm AC 2x2 Svc)

Windows 10(1.0.10440.0)

Lenovo Thinkpad Yoga 460 (Intel Dual Band Wireless-AC 9260) Windows 10 Pro ( 21.40.0)
Note 
For clients using Intel wireless cards, we recommend you to update to the latest Intel wireless drivers if advertised SSIDs are not visible.

Tablets

Apple iPad Pro iOS 13.5
Apple iPad Air2 MGLW2LL/A iOS 12.4.1
Apple iPad Mini 4 9.0.1 MK872LL/A iOS 11.4.1
Apple iPad Mini 2 ME279LL/A iOS 12.0
Microsoft Surface Pro 3 – 11ac Qualcomm Atheros QCA61x4A
Microsoft Surface Pro 3 – 11ax Intel AX201 chipset. Driver v21.40.1.3
Microsoft Surface Pro 7 – 11ax Intel Wi-Fi chip (HarrisonPeak AX201) (11ax, WPA3)
Microsoft Surface Pro X – 11ac & WPA3 WCN3998 Wi-Fi Chip (11ac, WPA3)

Mobile Phones

Apple iPhone 5 iOS 12.4.1
Apple iPhone 6s iOS 13.5
Apple iPhone 8 iOS 13.5
Apple iPhone X MQA52LL/A iOS 13.5
Apple iPhone 11 iOS 14.1
Apple iPhone SE MLY12LL/A iOS 11.3
ASCOM SH1 Myco2 Build 2.1
ASCOM SH1 Myco2 Build 4.5
ASCOM Myco 3 v1.2.3 Android 8.1
Drager Delta VG9.0.2
Drager M300.3 VG2.4
Drager M300.4 VG2.4
Drager M540 DG6.0.2 (1.2.6)
Google Pixel 2 Android 10
Google Pixel 3 Android 11

Google Pixel 3a

Android 11

Google Pixel 4 Android 11
Huawei Mate 20 pro Android 9.0
Huawei P20 Pro Android 9.0

Huawei P40

Android 10

LG v40 ThinQ Android 9.0

One Plus 8

Android 10

Oppo Find X2

Android 10

Redmi K20 Pro

Android 10

Samsung Galaxy S7 Andriod 6.0.1
Samsung Galaxy S7 SM - G930F Android 8.0
Samsung Galaxy S8 Android 8.0
Samsung Galaxy S9+ - G965U1 Android 9.0
Samsung Galaxy SM - G950U Android 7.0

Sony Experia 1 ii

Android 10

Sony Experia xz3 Android 9.0

Xiaomi Mi10

Android 10

Spectralink 8744 Android 5.1.1
Spectralink Versity Phones 9540 Android 8.1
Vocera Badges B3000n 4.3.2.5
Vocera Smart Badges V5000 5.0.4.30
Zebra MC40 Android 5.0
Zebra MC40N0 Android Ver: 4.1.1
Zebra MC92N0 Android Ver:  4.4.4
Zebra TC51 Android 7.1.2
Zebra TC52 Android 8.1.0
Zebra TC55 Android 8.1.0
Zebra TC57 Android 8.1.0
Zebra TC70 Android 6.1
Zebra TC75 Android 6.1.1
Printers
Zebra QLn320 Printer LINK OS 6.3
Zebra ZT230 Printer LINK OS 6.3
Zebra ZQ310 Printer LINK OS 6.3
Zebra ZD410 Printer LINK OS 6.3
Zebra ZT410 Printer LINK OS 6.3
Zebra ZQ610 Printer LINK OS 6.3
Zebra ZQ620 Printer LINK OS 6.3

Wireless Module

Intel 11ax 200

Driver v22.20.0

Intel AC 9260

Driver v21.40.0

Intel Dual Band Wireless AC 8260

Driver v19.50.1.6

Caveats

Caveats describe unexpected behavior in Cisco IOS releases. Caveats that are listed as Open in a prior release are carried forward to the next release as either Open or Resolved.


Note

All incremental releases will cover fixes from the current release.


Cisco Bug Search Tool

The Cisco Bug Search Tool (BST) allows partners and customers to search for software bugs based on product, release, and keyword, and aggregates key data such as bug details, product, and version. The BST is designed to improve the effectiveness in network risk management and device troubleshooting. The tool has a provision to filter bugs based on credentials to provide external and internal bug views for the search input.

To view the details of a caveat, click the corresponding identifier.

Open Caveats for Cisco IOS XE 17.9.2

Caveat ID

Description

CSCwc49992

Timeout during Direct Memory Access (DMA) transaction causes kernel panic in Access Point.

CSCwd05213

Kernel panic crash observed when gRPC server process is executed.

CSCwd05689

Cisco Catalyst 9124 Access Point AXI RSSI is 7 dBm to 8 dBm weaker at a distance compared to other Access Point models.

CSCwd10570

Cisco Catalyst 9130 Access Point displays different beacon data-rates for different Basic Service Set Identifiers (BSSIDs).

CSCwd22017

Apple iOS devices are deleted due to IP Learn timeout.

CSCwd30828

Cisco Catalyst 9120 Access Point crashes and reloads due to kernel panic.

CSCwd32215

Clients are stuck in "S_CO_L2_AUTH_IN_PROGRESS" loop when completing authentication.

CSCwd33981

Kernel panic crash is observed when PC is at "cpuidle_not_available".

CSCwc64201

Cisco Catalyst 9105 Access Point experiences communication gaps when working as a workgroup bridge (WGB).

CSCwc87688

Cisco Catalyst 9120 Access Point randomly displays high noise level in 5-GHz radio.

CSCwd21996

Cisco Catalyst 9120 Access Point experiences CleanAir sensor crash.

CSCwd22430

Access Points fail to view the backup image after running the "archive download-sw" command.

CSCwd25931

Wireless client does not receive IPv6 RA from wired FlexConnect local Dynamic Host Configuration Protocol (DHCP).

CSCwd28109

Cisco Catalyst 9130 Access Point experiences high latency or packet drops during TFTP.

CSCwd34908

Dynamic Channel Allocation (DCA) debug in the controller does not display Slot 2 when the nearby Access Point uses channel 36.

Open Caveats for Cisco IOS XE 17.9.1

There are no open caveats for this release.

Resolved Caveats for Cisco IOS XE 17.9.2

Caveat ID

Description

CSCwa42620

Cisco Catalyst 9130 Access Point drops packets on-air for Phoenix WinNonlin application.

CSCwc09461

Cisco Catalyst 9120 Access Points send Authentication response frames to clients after long delays.

CSCwc75102

Conversion of Mobility Express Access Points from ME to CAPWAP mode using DHCP option 43 does not work.

CSCwc78435

Cisco Catalyst 9130 Access Point sends incorrect channel list in out-of-band DFS event causing client connectivity issues.

CSCwd08259

Cisco Catalyst 9120, 9115, and 9105 Access Points experience radio firmware crash with Cisco IOS-XE 17.3 or later releases.

CSCvx80422

An access point fails to forward packets when using 10.128.128.127 or 10.128.128.128 addresses.

CSCvz66623

EAP-TLS clients behind the Mesh Access Point (MAP) experience authentication failure.

CSCwb08291

Cisco Catalyst 9105AXW Access Point introduces latency when clients use RLAN ports.

CSCwc05350

Cisco Wave 2 Access Points: CAPWAP MTU flapping occurs due to asymmetric MTU between Access Point to controller and vice-versa.

CSCwc10621

CleanAir statistics are not visible in Cisco Catalyst 9130 Access Points when joined to EWC.

CSCwc38912

Changing an Access Point site or policy tag to a Flex local switching set intermittently causes client connectivity failure to local web auth WLANs.

CSCwc51894

Cisco Catalyst 9117 Access Point reloads unexpectedly due to kernel panic with "dp_print_host_stats" logs.

CSCwc71198

CAPWAP flapping is observed when VRRPv3 is present in the network.

CSCwc73462

Backslash "\" in the end of the RADIUS servers' shared secret is not allowed for FlexConnect groups configuration.

CSCwc81341

Cisco Catalyst 9130 Access Point experiences kernel panic crash in Local mode when full data packet capture is enabled.

CSCwc05366

Wireless clients cannot reach each other as ARP resolution fails when performing dynamic VLAN assignment using AAA with SSID.

CSCwc15533

Continuous wncmgrd CPUHOG traceback with scale Flexible NetFlow (FNF) mapping to policy profile results in 100% wncd utilization.

CSCwc15944

Multicast data is not sent to clients and few Access Points are unable to join the controller.

CSCwc22468

Client traffic fails when client roams between access points with a transition between dot11r and dot11i.

CSCwc42784

Client fails to connect when protocol based Quality of Service (QoS) is configured.

CSCwc57227

Controller experiences an unexpected reset resulting in a system report containing a wncd core file.

CSCwc59518

Cisco Catalyst 9800-80 Wireless Controller crashes when using WLAN profile with 32 characters and disabled voice Channel Availability Check (CAC).

CSCwb47040

Controller does not update Radio Frequency Identification (RFID) location properly.

CSCwc26819

Controller does not send LLC or XID spoofed frames after a mobility event.

CSCwc36125

Radio Resource Management (RRM) startup mode gets triggered on every reboot as the controller does not keep track of the last state.

CSCwc41358

Controller MAC filtering: WLAN profile column displays the WLAN name and description.

CSCwc57836

Restore configuration by HTTP mode does not work in EWC.

CSCwc62824

Controller does not send LLC or XID spoofed frames after a mobility event.

CSCwc72047

Access Points operate in disabled RF profile channels in Cisco IOS-XE 17.6.2 release version.

CSCwc76905

Switch Integrated Security Features (SISF) crash is observed when handling the DHCP messages.

Resolved Caveats for Cisco IOS XE 17.9.1

Caveat ID

Description

CSCwa38847

Upgrade from CCO profile fails when a guest account (non-Cisco account) is used.

CSCwb22347

Support for special characters in the Image Download profile in EWC.

Troubleshooting

For the most up-to-date, detailed troubleshooting information, visit the Cisco TAC website at:

https://www.cisco.com/en/US/support/index.html

Go to Product Support and select your product from the list, or enter the name of your product. Look under Troubleshoot and Alerts to find information about the problem that you are experiencing.

Related Documentation

Information about Cisco IOS XE 16 is available at:

https://www.cisco.com/c/en/us/products/ios-nx-os-software/ios-xe/index.html

All the support documentation for Cisco Catalyst 9100 Access Points are available at: https://www.cisco.com/c/en/us/support/wireless/catalyst-9100ax-access-points/tsd-products-support-series-home.html

Cisco Validated Designs documents are available at:

https://www.cisco.com/go/designzone

Cisco Embedded Wireless Controller on Catalyst Access Points

For support information, see the following documents:

Installation guides for Catalyst Access Points are available at:

https://www.cisco.com/c/en/us/support/wireless/catalyst-9100ax-access-points/products-installation-guides-list.html

For all Cisco Wireless Controller software-related documentation, see:

https://www.cisco.com/c/en/us/support/wireless/catalyst-9800-series-wireless-controllers/tsd-products-support-series-home.html

Wireless Products Comparison

Cisco Connected Mobile Experiences

Cisco Connected Mobile Experiences Documentation

Cisco DNA Center

Cisco DNA Center Documentation

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