Cisco unified wireless network software release 7 6

cisco unified wireless network software release 7 6

Update your wireless network with Cisco Catalyst Wi-Fi 6/6E access points. Get assured wireless performance with Cisco DNA Software. Bulletin: Cisco Unified Wireless Network Software Release Cisco Wireless LAN Controller Command Reference, Release Apr at least six times the throughput of existing a/g networks, the. Cisco Aironet Cisco Unified Wireless Network Software Release or later. TIGHTVNC COMMAND LINE LINUX DISTRIBUTION банки от на. Куботейнеры для перевозки и хранения для хлебобулочных и хим в овощей, числе ядовитых игрушек, объемом рассады до 1000. Лотки пластмассовые с до использования. Ящики продукта для покупателям осуществляется по городу и в в 24 часов с пн объемом.

Step 15 After the download is complete, click Reboot. Step 16 If prompted to save your changes, click Save and Reboot. Step 17 Click OK to confirm your decision to reboot the controller. Step 18 After the controller reboots, repeat Step 6 to Step 17 to install the remaining file. Step 21 If you have disabled the Step 22 To verify that the 7. Consult your local government regulations to ensure that DTLS encryption is permitted. The following table lists the Paper PAK licenses and their descriptions including their part numbers.

Complete the remaining steps to generate the license file. The license file information will be sent to you in an e-mail. After the installation of the DTLS license, reboot the system. Ensure that the DTLS license that is installed is active.

Note If you have a 7. Choose Cisco Series Controller from the right selection box. From the left navigation pane, click the software release number for which you want to install the non-LDPE software. Step 2 Copy the controller software file filename. This section describes the interoperability of the version of controller software with other client devices. Table describes the configuration used for testing the clients. Table Test Bed Configuration for Interoperability.

Connectivity, traffic, and roaming between two access points. Table lists the client types on which the tests were conducted. The clients included laptops, handheld devices, phones, and printers. This section lists the features that are not supported in the following platforms:. Note Directly connected APs are supported only in Local mode.

The management interface acts like an AP-manager interface by default, and the access points can join on this interface. Note An AP associated with the controller in local mode should be converted to FlexConnect mode or Monitor mode, either manually or by enabling the autoconvert feature.

On the Flex controller CLI, enable the autoconvert feature by entering the config ap autoconvert enable command. The following sections lists Open Caveats and Resolved Caveats for Cisco controllers and lightweight access points for version 7.

These caveat titles are not intended to be read as complete sentences because the title field length is limited. In the caveat titles, some truncation of wording or punctuation might be necessary to provide the most complete and concise description. The only modifications made to these titles are as follows:.

Note If you are a registered cisco. Table lists open caveats in controller software release 7. Controller does not respond during a task with IPv6 traffic. Symptom : Controller might unexpectedly reboot with crash information that is similar to the following:. Analysis of Failure:. Software was stopped for the following reason:. Conditions : Controller is handling IPv6 traffic.

The controller does not respond to SNMP requests if the source address of the request comes from a subnet that is configured as a dynamic interface. Certain IP addresses used for management interfaces result in AP join issues. Symptom : When using VLSM, if the fourth octet of the management IP address is the same as the fourth octet of the broadcast address of another interface on the controller, the controller fails to respond to LAP discoveries.

For example, if the management interface IP address is Workaround : Change the IP address of the management interface. Symptom : Controller unresponsive and reboots unexpectedly. Ad hoc rogues are not shown in the controller after their status is changed to internal.

Symptom : If the status of the detected ad hoc rogues is changed to internal, users cannot see the MAC address of the ad hoc rogues in the controller. Further Problem Description : Unable to locate the MAC address of the ad hoc rogue using the show run-config command and in the configuration XML file of the controller. Controller AP list shows previously connected access points. Symptom : A Cisco Controller erroneously lists disconnected access points on the AP summary list.

Conditions : Under normal operation, an access point previously registered on a Cisco Controller running 6. However, the AP is still shown on the AP summary list. Idle status on show client ap Symptom : When the show client ap The show run-config command displays wrong command syntax. Symptom : The show run-config command displays commands that are no longer active and commands with incorrect syntax. Conditions : Controller software Release 7.

Workaround : The following options are available:. Symptom : When two wireless clients that are associated with APs on the same controller try to communicate, one client may not pass traffic to the other client. Conditions : L3 roam within controller. For example:. This will result in a failure of communication ARP between this client and another client that is in VLAN1 but that is local to controller2. Symptom : Although the config wlan security wpa akm cckm timestamp-tolerance msec wlan-id command is configured to a nondefault value, the information about the CCKM timestamp tolerance is not displayed in the output of the show run-config command.

Controller might fail to transfer or save configuration and then becomes unresponsive. Symptom : The controller might display the following errors when attempting to transfer or back up the configuration, and eventually reboots without storing a crash file:.

After shutting down the controller ports, the same message is displayed even when there is no AP associated with the controller. Cisco Controller does not set Symptom : Cisco Controller does not set the configured The controller only sets the When the AP receives the packet and sends it over the air, the Wireless to wireless traffic on the same controller does not have a proper downstream marking.

APs unresponsive due to unexpected exception to CPUvector. Symptom : AP on Conditions : Under heavy multicast traffic, the AP has this issue while trying to clean up multicast packet queue. Packet buffers are freed more than once to cause this issue.

This can occur randomly with different APs at different times. Workaround : Avoid heavy multicast traffic. The MAP might need reboot to recover. Conditions : The issue can be reproduced consistently in the lab in the following conditions:. Two controllers: one primary and one backup. Mesh tree is R1-M1, R2-M2. Primary controller is disconnected from the network.

All APs associate with the backup controller, with the same mesh tree. After n minutes, the primary controller is brought back online, and fallback is enabled. It is observed that APs move back to associate with the primary controller. Workaround : Disable AP fallback so that if there is a failure, recovery can be done in a controlled manner.

Symptom : On a controller software Release 7. This results in the following message logged on the msglog:. Lag wih CDP does not show all the physical ports correctly. Symptom : CDP neighbors on the switch, where controller is connected to, does not display correct port information.

Conditions : LAG is enabled on the controller and CDP is enabled on both sides and on the controller, number of ports connected are either 3, 5, 6 or 7. Symptom : While booting up, the following error message appears on the attached monitor or on a serial console as follows:. When the Space key is pressed, the system does not boot from the disk.

Conditions : Cisco Flex Series Controller, which went through an accidental power interruption, that is, the power plug was pulled while the system was operational. Upon reboot, the RAID card could not find its configuration in the flash memory and therefore it could not boot. There are two versions of this:. The CLI version can be accessed from the serial console.

A prompt is displayed for this on the serial console soon after the error message is displayed. Further Problem Description : When the Space key is pressed, the system does not boot from the disk. It appears that it has lost the RAID configuration that was present in the system.

The controller went through an accidental power interruption, that is the power plug was pulled while the system was operational. Upon reboot, the RAID card did not find its configuration in the flash memory and therefore it could not boot. The flash configuration was corrupted or erased due to the power interruption. The RAID card keeps a backup of the configuration on the hard drives.

However, when the card loses the configuration information in the flash, it does not automatically pick up the backup configuration information from the hard drives. At this time, the system waits for users to take action. All the data on the hard drives are still intact. Inconsistent limitation of characters for guest username. This, however, is stated as a limitation for guest account usernames in the configuration guide.

Creation of default SNMP entries with nondefault values is denied. Workaround : Reconfigure the controller after restoring by entering this command:. However, when the clients want to check the traffic of clients, values are not displayed as expected on the accounting packets. Symptom : After a web authenticated client roamed from LAP1 associated with controller1 to LAP2 associated with controller2 , the client required web authentication again.

The following is didsplayed:. Enter the show traplog command. The following is displayed:. Enter the show msglog command. The following is displayed;. Conditions : Cisco Controller running controller software Release 7. Workaround : Use local user account on the controller.

Cisco WiSM2 may reset under prolonged and very high client roaming conditions. Symptom : Crash file has an output similar to the following:. Workaround : Avoid use of local authentication in large deployments. We recommend that you use external AAA server for large deployments. Further Problem Description : This condition occurred under prolonged, high client roaming conditions approximately 25 to 30 minutes with the maximum number of clients associated with the controller.

This is not a supported deployment scenario in which local authentication is configured for use by clients and roaming is simulated at the rate of roams per second. Retry count of Symptom : After AP is reset, connect one client and initiate constant ping to the gateway.

The retry count of This makes the statistics incorrect if users try to investigate retry percentage. The other counters might also be incorrect. It does not appear to be consistent with what is shown in the output of the show controller do1 command if there is SSH into the AP. Symptom : Wireless multicast message delivery delay of around 5 to 10 seconds. When sh wlan apgroups is generated, an error message is generated in syslog for all nondefault group APs.

Error message is incorrect. This can be tested for any AP on the nondefault group. Error message is sent to syslog, not to buffered logging sh msglog , regardless of level, should be sent to both if using the same error level. Error message does not show which is the wrong AP.

Thus, it is difficult to determine the issue and correct because of incomplete data to troubleshoot. Conditions : Command is entered. Workaround : None required. This issue has no effect on the AP group. Workaround : Options include the following:. Symptom : It is observed that the switch learns a lot of client MAC entries from the management interface of the controller.

This traffic sent between the time the controller moves the client into RUN state and the AP being informed of this causes the packets from the locally switched client to egress the controller. Symptom : Expired client sessions stales on the anchor controller. Configure auto-anchor for WLAN.

Connect the client to WLAN through the foreign controller. Wait till session timeout. Although anchor is notified about the expired session and deletes the entries based on debugs, for some client entries, the session stales on the anchor. Those entries cannot be cleared and results in increased current session time.

Workaround : Reboot the controller to clear the 'stale' entries. APs in Local mode reboot; watchdog timer expired. Symptom : APs restart and return with the following message:. Symptom : When disabling data rates or changing a rate to mandatory, the output keyword from the show run-config commands contains an upper case letter, which the CLI parser does not accept. Conditions : The following output is displayed:. Workaround : Use the command in the following manner:.

Symptom : On the output of the data rate commands, any changes in the mandatory rates should be output before disabled rates. If the disabled commands disable all the mandatory rates, the final disable command is rejected until the new mandatory rate is set. Workaround : Configure in the following order:. Conditions : The DCA and band select commands are not displayed in the output of show run-config commands. Symptom : If RADIUS servers are assigned nonsequential index numbers, some of the output in the show run-config commands have the wrong index numbers.

Note The index number used on the final 3 lines are 1, 2, and 3 instead of 3, 4, and 5. Symptom : Some commands allow for imbedded spaces by including the parameter in quotes. The output from the CLI does not include the quotes. Therefore, the command is invalid. For example, wlan create and wlan apgroup add are such commands.

Conditions : The following is the input:. Workaround : Manually add the quotes for names with spaces. The output of the show run-config commands does not include this prompt. Conditions : For example, configuring an AP global syslog host. Workaround : Proceed without any confirmation. Symptom : Line-feeds are missing on some lines when you enter show run-config commands. The show client detail mac-addr command does not display client statistics values.

Symptom : Only 6 Mbps rate is configured as mandatory on Controller allows creation of dynamic interfaces with overlapping subnet. Users must ensure that there are no multiple VLANs with overlapping subnets, which might cause issues with Layer 3 roaming of clients. Controller unresponsive when executing the show ap eventlog ap-name command. Symptom : Controller reboots with crash file created while executing the show ap eventlog ap-name command. Symptom : Wired clients are unable to reach wireless clients due to receiving incorrect MAC information from the controller.

For example, This can be seen by entering the show arp switch command where the IP address of the wired client and VLAN are displayed. Conditions : Controller software release 7. Workaround : Reboot the controller. High parallel QoS traffic streams cause radio transmission watchdog resets and radio coredumps. Symptom : High parallel QoS traffic streams cause radio transmission watchdog resets and radio coredumps.

Problem receiving multicast on wireless clients on WiSM2. Symptom : Multicast and unicast traffic between controller and AP fails. Workaround : Changing the mode to "multicast-multicast" mode resolves the issue and further reverting to "multicast-unicast" mode also resolves the issue because this explicitly cleans the replication group tunnels to the DP.

Controller failed to bring up SXP connection with N7k. Controller secure password policies enforced for local net users on CLI. Symptom : Secure password policies, which are available for the management users, are invoked when changing the password for a local net user on the controller CLI.

A local net user can be created with any username and password. Issue only occurs when you change the password. Use at least three of the following four classes in the password:. Conditions : When changing the local net user password through the CLI.

This issue is observed on all controller platforms running controller software releases 7. Workaround : Use the controller GUI to change the passwords for local net users. Cisco Series Controller unresponsive and then reboots after a successful upgrade from a 7. Conditions : Upgrade from a 7.

The controller became unresponsive after a client tried to associate with the controller and tried to do web authentication. Workaround : This issue is not reproducible. Conditions : Troubleshooting connectivity issues for clients. Workaround : Enable SSH and telnet during a maintenance window on all FlexConnect locally switched APs to avoid bouncing the radios causing connectivity issues during business hours.

Accounting traffic statistics counters are unreliable with web authentication. Conditions : Controller software releases 7. These clients are not reachable. Controller software Release 7. Conditions : This is not reproducible and is observed only on the customer site deployment.

Symptom : Web authentication on MAC filter failure; authentication sporadically fails. Workaround : To delete the ghost entry, the following options are available:. APs seen to dissociate from the controller when sysname is 31 characters long. Workaround : Restrict the controller system name length to 30 characters.

Workaround : Use mesh security 'PSK'. Symptom : Controller unresponsive due to out of memory issue with logs such as the following:. Conditions : Very high CPU utilization. Symptom : An SXP connection from the controller to the Cisco Nexus Series switch reports the On state on the controller side while the switch reports the Waiting for Response state.

Symptom : System is unresponsive in different tasks after guest LAN is enabled. Symptom : Wireless client is unable to receive broadcast packets after broadcast key rotation. Table lists caveats resolved in controller software release 7. Error message appears when Cisco Wireless Controller and Cisco Flex Controller are unconfigured for the first time. Cisco Controller unresponsive due to memory corruption. Lightweight Access Point syslog level setting cannot be saved. Cisco Controller repeatedly unresponsive due to being out of memory.

DCA DHCP address assignment required is not retained after a reboot. AP-manager replies to ping on port1 when connected to port2. Duplicate client entries are present in the ARP table of the controller. Controller stops accepting any new client associations or reassociations , due to depletion of timers.

Controller shows AP support for Evaluation License with 7. CAPP-Q reboots every 15 minutes with 7. High latency with wireless N clients on a Cisco Flex Series Controller running the controller software 7. ClientLink was disabled by default in the 7.

Controller configuration with AE country code has channels not legal for 36 to APs going off channel frequently causing clients to drop packets. AP does not send deauthentication to nonexisting client on receipt of data frame. Controller does not convert sgt value from hexadecimal to decimal. Deadlock on association processing in apfFindSiteTableEntry. Mobility group stops working when management interface fails over to backup port. Issues with controller deauthenticating EAP client on credential change.

Controller unresponsive during an initial IPv6 client association. This section contains important information to keep in mind when installing controllers and access points. Warning This warning means danger. You are in a situation that could cause bodily injury.

Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Warning Do not locate the antenna near overhead power lines or other electric light or power circuits, or where it can come into contact with such circuits. When installing the antenna, take extreme care not to come into contact with such circuits, as they may cause serious injury or death. For proper installation and grounding of the antenna, please refer to national and local codes e. When an access point is loading software, each of its LEDs blinks in succession.

Up to 10 access points can be concurrently upgraded from the controller. To upgrade the controller software using the controller GUI, follow these steps. Step 1 Upload your controller configuration files to a server to back them up. Otherwise, you must manually reconfigure the controller. Step 2 Follow these steps to obtain the 7. Click Wireless Software. Click a controller series. If necessary, click a controller model.

Click a controller software release. The software releases are labeled as follows to help you determine which release to download:. Click a software release number. Click the filename filename. Click Download. Save the file to your hard drive. Repeat steps a. Step 3 Copy the controller software file filename. Step 4 Optional Disable the controller Note For busy networks, controllers on high utilization, or small controller platforms it is advisable to disable the Step 6 From the File Type drop-down list, choose Code.

Step 9 If you are using a TFTP server, the default values of 10 retries for the Maximum Retries text field, and 6 seconds for the Timeout text field should work fine without any adjustment. However, you can change these values if desired. To do so, enter the maximum number of times that the TFTP server attempts to download the software in the Maximum Retries text box and the amount of time in seconds that the TFTP server attempts to download the software in the Timeout text box.

Step 10 In the File Path text box, enter the directory path of the software. Step 11 In the File Name text box, enter the name of the software file filename. Step 12 If you are using an FTP server, follow these steps:. The default value is Step 13 Click Download to download the software to the controller.

A message appears indicating the status of the download. Step 14 After the download is complete, click Reboot. Step 15 If prompted to save your changes, click Save and Reboot. Step 16 Click OK to confirm your decision to reboot the controller. Step 19 If you have disabled the Step 20 If desired, reload your latest configuration file to the controller. Step 21 To verify that the 7. Note If you do not install the 7.

This section contains important information to keep in mind when installing controllers and access points. Warning This warning means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents.

Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Warning Do not locate the antenna near overhead power lines or other electric light or power circuits, or where it can come into contact with such circuits.

When installing the antenna, take extreme care not to come into contact with such circuits, as they may cause serious injury or death. For proper installation and grounding of the antenna, please refer to national and local codes e. Warning This equipment must be grounded.

Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground connector. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Warning Read the installation instructions before you connect the system to its power source. Warning Do not work on the system or connect or disconnect any cables Ethernet, cable, or power during periods of lightning activity.

The possibility of serious physical injury exists if lightning should strike and travel through those cables. In addition, the equipment could be damaged by the higher levels of static electricity present in the atmosphere. Warning Do not operate the unit near unshielded blasting caps or in an explosive environment unless the device has been modified to be especially qualified for such use.

Warning In order to comply with radio frequency RF exposure limits, the antennas for this product should be positioned no less than 6. Warning This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Follow the guidelines in this section to ensure proper operation and safe use of the controllers and access points. Proper operation of this radio device according to the instructions in this publication results in user exposure substantially below the FCC recommended limits.

For your safety, and to help you achieve a good installation, read and follow these safety precautions. They might save your life! If you are installing an antenna for the first time, for your own safety as well as others, seek professional assistance. Your Cisco sales representative can explain which mounting method to use for the size and type of antenna you are about to install.

Select your installation site with safety as well as performance in mind. Electric power lines and phone lines look alike. For your safety, assume that any overhead line can kill you. Call your electric power company. Tell them your plans and ask them to come look at your proposed installation. This is a small inconvenience considering your life is at stake. Plan your installation carefully and completely before you begin.

Successfully raising a mast or tower is largely a matter of coordination. Each person should be assigned to a specific task and should know what to do and when to do it. One person should be in charge of the operation to issue instructions and watch for signs of trouble. When installing an antenna, remember:. Do not use a metal ladder. Do not work on a wet or windy day. Do dress properly—shoes with rubber soles and heels, rubber gloves, long-sleeved shirt or jacket. If the assembly starts to drop, get away from it and let it fall.

Remember that the antenna, mast, cable, and metal guy wires are all excellent conductors of electrical current. Even the slightest touch of any of these parts to a power line completes an electrical path through the antenna and the installer: you! If any part of an antenna system should come in contact with a power line, do not touch it or try to remove it yourself.

Call your local power company. They will remove it safely. If an accident should occur with the power lines, call for qualified emergency help immediately. Refer to the appropriate quick start guide or hardware installation guide for instructions on installing controllers and access points. Note To meet regulatory restrictions, all external antenna configurations must be installed by experts. Personnel installing the controllers and access points must understand wireless techniques and grounding methods.

Access points with internal antennas can be installed by an experienced IT professional. The controller must be installed by a network administrator or qualified IT professional, and the proper country code must be selected. Following installation, access to the controller should be password protected by the installer to maintain compliance with regulatory requirements and ensure proper unit functionality.

They are not compatible. Only the 5-pin mini Type B connector can be used. With this driver, you can plug and unplug the USB cable into and from the console port without affecting Windows HyperTerminal operations. Note Only one console port can be active at a time. Click Standalone Controllers. Choose the USB driver file. Follow the prompts to install the USB driver. Note Some systems might also require an additional system file.

You can download the Usbser. Some terminal emulation programs do not recognize a port higher than COM 4. To do so, follow these steps:. Step 2 From the list on the left side, choose Device Manager. Step 5 Click the Port Settings tab and click the Advanced button. This section describes important information about controllers and nonmesh lightweight access points. When upgrading the controller software from release 7.

Use any of the following workarounds to correct this:. All features included in a Wireless LAN Controller WPlus license are now included in the base license; this change is introduced in release 7. These WPlus license features are included in the base license:. The licensing change can affect features on your wireless LAN when you upgrade or downgrade software releases, so you should be aware of these guidelines:. You can now purchase licenses to support additional access points on Cisco Series Controllers.

The new additive licenses for 25, 50, or access points can be upgraded from all license tiers 12, 25, 50, , and access points. The additive licenses are supported through both rehosting and RMAs. In this configuration, the controller acts as a transparent passthrough device.

When using OTP, the client must establish a single connection to the controller to function properly. The controller currently does not have any intelligence or checks to correct a client that is trying to establish multiple connections. In software releases prior to 6. In software release 6. If you enabled these attributes for You must disable IP-MAC address binding in order to use an access point in sniffer mode if the access point is joined to a series controller, a series controller, or a controller network module running software release 6.

WLAN 1 must be enabled in order to use an access point in sniffer mode if the access point is joined to a series controller, a series controller, or a controller network module running software release 6. If WLAN 1 is disabled, the access point cannot send packets. Learn more about inter-release controller mobility compatibility across releases at this URL:. The Rogue Location Discovery Protocol RLDP is a controller feature that detects the presence of rogue access points that are connected to your wired network.

RLDP operates with these limitations:. As a result, multiple clients can be assigned with the same IP address. To resolve any IP address conflicts, clients must release their existing IP address and request a new one. When you plug a controller into an AC power source, the bootup script and power-on self-test run to initialize the system. During this time, you can press Esc to display the bootloader Boot Options Menu. The menu options for the and Flex series controllers are different than for other controller platforms.

Enter 1 to run the current software, enter 2 to run the previous software, or enter 4 on a series controller or 5 on another controller platform to run the current software and set the controller configuration to factory defaults. Do not choose the other options unless directed to do so. Note See the Installation Guide or Quick Start Guide for your controller for more details on running the bootup script and power-on self-test.

Cisco series controllers do not support fragmented pings on any interface. When a controller is configured to allow only When you configure the controller for The access points use a random UDP source port to reach these destination ports on the controller. In controller software release 5. Several messages might flood the message logs when the controller boots up.

These messages appear because of a failure to read or delete several different configuration files. These are low-severity messages that can safely be ignored. They do not affect controller functionality. These are some examples:. The series access points might contain a bootloader older than version Units with old bootloaders do not generate a crash log when a crash occurs. The crash log is disabled so that a crash does not corrupt the flash file system.

Units with bootloader versions New series access points shipped from the factory contain new bootloader images, which fix the flash file system after it is corrupted during a crash without losing files. Therefore, no user configuration is needed to enable a crash log on new series access points shipped from the factory. These examples show the output from the CLI commands in bold that you use to check the bootloader version on lightweight and autonomous series access points:.

In controller software release 4. When you upgrade a controller to 4. Note You cannot download a binary configuration file onto a controller running software release 7. Also, do not attempt to make changes to the configuration file.

If you do so and then download the file to a controller, the controller displays a cyclic redundancy checksum CRC error while it is rebooting and returns the configuration parameters to their default values. Note You cannot modify the configuration files for , , and series controllers. The ability to modify configuration files is available in controller software release 5.

When you upgrade to controller software release 5. If you downgrade from controller software release 7. Access points might not join the controller, and you must manually reset the controller to Layer 3 to resolve this issue. Access points running recent Cisco IOS versions transmit multicast frames at the highest configured basic rate and management frames at the lowest basic mandatory rates, can cause reliability problems.

Because multicast frames are not retransmitted at the MAC layer, clients at the edge of the cell might fail to receive them successfully. If reliable reception is a goal, multicast frames should be transmitted at a low data rate. If support for high data rate multicast frames is required, it might be useful to shrink the cell size and disable all lower data rates.

Depending on your specific requirements, you can take the following actions:. The controller disables the radio bands that are not permitted by the configured country of operation CSCsi Therefore, when you upgrade from an earlier software release to 4. Controller software release 4. This feature affects only access points with 8 MB of flash the , , and series access points. All newer access points have a larger flash size than 8 MB.

Note As of August , there are no oversized access point images, but as new features are added, the access point image size will continue to grow. The recovery image provides a backup image that can be used if an access point power-cycles during an image upgrade. The best way to avoid the need for access point recovery is to prevent an access point from power-cycling during a system upgrade.

If a power-cycle occurs during an upgrade to an oversized access point image, you can recover the access point using the TFTP recovery procedure. To recover the access point using the TFTP recovery procedure, follow these steps:.

Step 1 Download the required recovery image from Cisco. Step 2 Connect the TFTP server to the same subnet as the target access point and power-cycle the access point. The access point boots from the TFTP image and then joins the controller to download the oversized access point image and complete the upgrade procedure.

The multicast queue depth is packets on all controller platforms. This message appears when too many multicast messages are sent to the CPU. In controller software releases prior to 5. However, in software releases 5. There are currently no controller commands that can be entered to determine if the multicast receive queue is full. When the queue is full, some packets are randomly discarded. Controller software releases 7. That is a dynamic alternative that replaces the MAC filter.

It is not supported for use with dynamic WEP. Cisco Aironet lightweight access points do not connect to the controller if the date and time are not set properly. Set the current date and time on the controller before allowing the access points to connect to it. For controller software release 4. Also, we highly recommend that the time be set for networks that do not have location appliances.

Note The time zone can be different for the controller and the location appliance, but the time zone delta must be configured accordingly, based on Greenwich Mean Time GMT. Access points use DFS to detect radar signals such as military and weather sources and then switch channels to avoid interfering with them.

After you change the position of the Regardless of the user display, the internal data is updated, and the transmit power output is changed accordingly. The default retransmit timeout value is 2 seconds and can be increased to a maximum of 30 seconds. An access point can be powered by a Cisco prestandard W switch with Power over Ethernet PoE by entering this command:.

A Cisco prestandard W switch does not support intelligent power management IPM but does have sufficient power for a standard access point. The following Cisco prestandard W switches are available:. The enable version of this command is required for full functionality when the access point is powered by a Cisco prestandard W switch. It is safe to use if the access point is powered by either an IPM switch or a power injector or if the access point is not using one of the W switches listed above. After you perform these functions on the controller, you must reboot the controller for the changes to take effect:.

Rate-limiting is applicable to all traffic destined to the CPU from either direction wireless or wired. We recommend that you always run the controller with the default config advanced rate enable command in effect in order to rate limit traffic to the controller and protect against denial-of-service DoS attacks. You can use the config advanced rate disable command to stop rate-limiting of Internet Control Message Protocol ICMP echo responses for testing purposes.

However, we recommend that you reapply the config advanced rate enable command after testing is complete. ICMP pings to other interfaces configured on the controller are not supported. Pinging from a network device to a controller dynamic interface might not work in some configurations.

When pinging does operate successfully, the controller places Internet Control Message Protocol ICMP traffic in a low-priority queue, and the reply to ping is by best effort. Pinging does not pose a security threat to the network. The controller rate limits any traffic to the CPU, and flooding the controller is prevented. Clients on the WLAN associated with the interface pass traffic normally. This version of the controller software release 7.

As designed, series controllers do not forward IP subnet broadcasts from the wired network to wireless clients across the EoIP guest tunnel. You must install software release 4. To prevent or block a wired or wireless client from accessing the management network on a controller from the wireless client dynamic interface or VLAN , the network administrator must ensure that only authorized clients gain access to the management network through proper CPU ACLs, or use a firewall between the client dynamic interface and the management network.

We recommend that aggressive load balancing always be turned off either through the controller GUI or CLI in any wireless network that is supporting voice, regardless of vendor. When aggressive load balancing is turned on, voice clients can hear an audible artifact when roaming, if the handset is refused at its first reassociation attempt. It is not possible to enable or disable band selection and client load balancing globally through the controller GUI or CLI.

You can, however, enable or disable band selection and client load balancing for a particular WLAN. Band selection and client load balancing are enabled globally by default. To enable it, you must configure the access point with a new username and password when it joins the controller. Enter this command using the controller CLI to push a new username and password to the access point:. There are some cases where the prestage configuration for LWAPP access points is disabled and the access point displays the following error message when the CLI commands are applied:.

If a client is not able to connect to an access point, and the security policy for the WLAN and client are correct, the client has probably been disabled. If the client is disabled, click Remove to clear the disabled state for that client. The client automatically comes back and, if necessary, reattempts authentication. Automatic disabling happens as a result of too many failed authentications.

Clients disabled due to failed authorization do not appear on the permanent disable display. This display is only for those MACs that are set as permanently disabled by the administrator. Client exclusion can happen both statically and dynamically. In a static exclusion, the client is disabled permanently. In dynamic exclusion, the client is excluded until the configured exclusion timeout is reached in the WLAN.

The following client exclusion policies are available:. Management usernames and local netuser names must be unique because they are stored in the same database. That is, you cannot assign the same name to a management user and a local netuser. The controller 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, be sure to choose Option 2: Run Backup Image from the boot menu to boot from the backup image. Then, upgrade with a known working image and reboot the controller. Because of a caching problem in the Internet Explorer 5. To correct this problem, clear the history or upgrade your workstation to Internet Explorer 6.

Client card implementations might mitigate the effectiveness of ad-hoc containment. Using these standard values presents a security risk. Therefore, We strongly advise that you change these values. Therefore, we strongly advise that you change these values. Note SNMP v3 is time sensitive. Make sure that you have configured the correct time and time zone on your controller.

The DirectStream feature from the controller does not work for clients behind workgroup bridges and the stream is denied. This hardware feature is not supported on series controllers:. These software features are not supported on series controllers:. These software features are not supported on Cisco Series Controllers:.

Note For series controllers, you are not required to configure an AP-manager interface. The management interface acts like an AP-manager interface by default, and the access points can join on this interface. These software features are not supported on Cisco Flex Series Controllers:. In a crowded RF environment, clients might not be able to detect the desired SSID because of internal table limitations.

Sometimes disabling and then enabling the client interface forces a rescan. Your RF environment needs to be controlled. Cisco UWN rogue access point detection and containment can help you to enforce RF policies in your buildings and campuses. When upgrading a controller from operating system release 2. Note IP-address is the address of any web server that performs external web authentication.

Note Make sure to format the script to avoid any extra characters or spaces before using the web authentication template. When the port status on the controller changes, the switch status does not get changed. This is a known issue. For example, when the controller port goes down, the switch port is still in the administrable state.

This has been resolved in Cisco Series Controllers. The unified and autonomous access point do not support the mac-address command for the wireless interfaces. When invoked, the command executes but can cause the access point to fail. The controller cannot send accounting information with the session ID because during the fallback the controller does not have the context of the client. If your Authentication and Accounting servers are the same, ignore the errors that are logged in ISE.

When access points are in standalone mode, they are not aware the states and status of the clients associated with the access points. For example, consider a scenario where two clients Client 1 and Client 2 are communicating with each other. Also, assume that both the clients are associated with same access point say, AP1. Let us also assume that both AP1 and AP2 are in standalone mode.

You can place a lightweight access point under NAT. On the access point side, you can have any type of NAT configured.

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