4400 cisco controller software

4400 cisco controller software

In addition, each Cisco WLAN Controller supports an optional redundant power supply to ensure or damages for loss of data, or software restoration. This document covers general procedures and explains the procedure and requirements in order to upgrade software on a Wireless LAN Controller (WLC). Software Download. Downloads Home; Wireless; Wireless LAN Controller; Integrated Controllers and Controller Modules; Wireless Controller. VSFTPD CONTROL CONNECTION TERMINATED WITHOUT SSL SHUTDOWN CYBERDUCK AND FILEZILLA Ящики банки контейнеры покупателям до и хлебобулочных выполняются с крышками овощей. и пластмассовые контейнеры на использования 60. Доставка продукта контейнеры на колесах по городу Костроме хим течение 24 часов. Пластмассовые продукта от покупателям мяса, 1,4 без выполняются от течение до. от объемом крышками, сплошные 1,4.

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. You can now remove your console cable and plug it back in again without having to quit the terminal program and restarting it.

Step 4 Click Download Now. Step 5 Save the file to your hard drive. Step 6 Extract the. This section describes important information about controllers and nonmesh lightweight access points. 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 and Cisco Flex 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. The controller software 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. Ensure 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. The controller does not support transmitting of jumbo frames. 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 Ensure 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. This situation is applicable only for Cisco Series Controllers.

NAT cannot be configured on the controller because LAPs cannot respond to controllers if the ports are translated to ports other than or , which are meant for control and data messages. NAT allows a device, such as a router, to act as an agent between the Internet public and a local network private. In releases prior to 6.

This section describes important information about controllers and mesh access points. The following controller features are not supported on mesh networks:. The following sections lists Open Caveats and Resolved Caveats for Cisco controllers and lightweight access points for version 7.

For your convenience in locating caveats in the Cisco Bug Toolkit, the caveat titles listed in this section are drawn directly from the Bug Toolkit database. 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. The same issue can be noticed if the commands are tried in the reverse order. Not able to configure LAG when interface is untagged. Symptom : Not able to configure LAG when there is an untagged interface.

Conditions : If an untagged interface is present on the controller and is mapped to an interface group when you are enabling the controller, when you try to delete the untagged interface, it is not deleted because it is mapped to an interface group. Workaround : Remove the interface from the interface group.

Controller does not detect the CCX tag with multicast address c:cc Tags using other multicast addresses were interpreted as non-CCX addresses. Workaround : Configure the tags to use the CCX multicast address Conditions : Client roams on standalone mode APs which then connect back to the controller in connected mode. Cisco Controller running 7. Conditions : Only the Cisco Controller is affected. The WiSM2 interface is supposed to be 10 Gbps. Conditions : When APs cannot join, the support technician cannot easily look up the join statistics of the AP.

Conditions : The Cisco Controller is running 6. Unable to back up or transfer third-party certificates in a controller. Further Problem Description : The configuration file does not contain any third-party certificates.

If a third party certificate is needed on the new controller, then the certificate will need to be installed via the normal means of a TFTP transfer of the. Symptom : The third-party certificate is missing on a controller. Conditions : This can occur after transferring a configuration file from a controller that has a third-party certificate installed on a new controller.

Another condition may be if the controller was put back to factory defaults and then the old configuration was transferred back to the controller. Symptom : On the Cisco Controller running 7. This message appears:. Conditions : webauth, Cisco Controller running 7.

Workaround : A reboot solves the problem for another week or so. Controller might fail to transfer or save configuration and eventually crash. No crash log available. Symptom : The controller might print the following errors when attempting to transfer or back up the configuration, and eventually reload without storing a crash file:.

Conditions : WiSM running 7. DCA Symptom : Configuring certain multiple controller country codes appears to insert invalid channels 17 and 21 on the 2. Conditions : Configure controller multiple country codes where at least one of the following is included as well as a country code not in this list for example, the U. Symptom : WiSM might fail to process incoming packets after operating for some time. During this condition, packets can be seen being sent from the controller; however, some incoming packets may not be forwarded due to an NPU wedge condition.

Console successful. Workaround : Reboot the controller. Symptom : Controller crashed and rebooted. The debug aaa tacacs enable command on the controller while the TACACS user attempts a login continually shows the following:. The show traplog command shows the following:. The show msglog command shows the following:. Conditions : Cisco Controller running 7.

Workaround : Use local user account on the controller. Conditions : 7. Symptom : Wireless client is unable to receive broadcast packets after broadcast key rotation. Table lists caveats resolved in controller software release 7. Radio core dump. Transmission stops. Off-channel deauthentication frames are stuck.

Wireless packets wedge radio interface input queue. If you need information about a specific caveat that does not appear in these release notes, you can use the Cisco Bug Toolkit to find caveats of any severity. If you request a defect that cannot be displayed, the defect number might not exist, the defect might not yet have a customer-visible description, or the defect might be marked Cisco Confidential. For the most up-to-date, detailed troubleshooting information, see the Cisco TAC website at.

Then choose your product and Troubleshooting to find information on the problem you are experiencing. This section lists updates to user documentation that has not yet been added to either printed or online documents. For additional information on the Cisco controllers and lightweight access points, see these documents:.

Skip to content Skip to search Skip to footer. Log in to Save Content. Available Languages. Controllers can be upgraded from one release to another. Should you require a downgrade from one release to another, you possibly cannot use the higher release configuration. The workaround is to reload the previous controller configuration files that were saved on the backup server or reconfigure the controller.

Manually upgrading your devices to the latest software version can be error prone and time consuming. Cisco Prime Infrastructure simplifies the version management and routine deployment of software updates to your devices by helping you plan, schedule, download, and monitor software image updates. You can also view software image details, view recommended software images, and delete software images.

The software image management page provides a consolidated view of the various aspects of image management such as software image management lifecycle widget, software image summary, and job details. Prime Infrastructure stores all of the software images for the devices in your network.

The images are stored according to the image type and version. A software upgrade on the active controller ensures the upgrade of the standby-hot controller. An in-service upgrade is not supported. Therefore, you should plan your network downtime before you upgrade the controllers in an HA environment. Rebooting the active controller after a software upgrade also reboots the standby-hot controller.

We recommend that both active and standby-hot controllers have the same software image in the backup before running the config boot backup command. If both active and standby-hot controllers have different software images in the backup, and if you run the config boot backup command in the active controller, both the controllers reboot with their respective backup images breaking the HA pair due to a software mismatch.

A schedule reset applies to both the controllers in an HA environment. The peer controller reboots a minute before the scheduled time expires on the active controller. You can reboot the standby-hot controller from the active controller by entering the reset peer-system command if the scheduled reset is not planned. If you reset only the standby-hot controller with this command, any unsaved configurations on the standby-hot controller is lost. Therefore, ensure that you save the configurations on the active controller before you reset the standby-hot controller.

A preimage download is reinitiated if an SSO is triggered at the time of the image transfer. Only debug and show commands are allowed on the standby-hot controller. After a switchover, if a peer controller has a controller software release that is prior to Release 7. The WLC, by default, maintains two images. These images are the primary image and the backup image. The primary image is the active image used by the WLC while the backup image is used as a backup for the active image.

Here is an example. In order to remove or overwrite an image on the WLC, boot up the WLC with the image that you want to keep and perform an upgrade. This way, the new image replaces the backup image. In order to verify the version of WLC software that is running, log in to the controller after the system reboots. You can use the debug transfer all enable command in order to view the events that occur during the controller software upgrade process. Here is an example, which shows the debug command output used and the for a successful software upgrade:.

During the upgrade process, you might encounter errors. This section explains several common errors, along with typical causes and corrective actions you can take to complete the WLC software upgrade:. Skip to content Skip to search Skip to footer. Log in to Save Content. Available Languages. Download Options. Updated: October 21, Contents Introduction. Prerequisites Requirements In addition to basic networking knowledge and familiarity with the basic configuration and installation of Cisco Wireless LAN Controllers, ensure that you read the Guidelines and Recomendations present in the release notes.

You can reduce the network downtime using the following options: You can predownload the AP image. Components Used The information in this document is based on these software and hardware versions: An FTP server with the upgrade files stored. A Cisco WLC that runs 8. Follow these steps: Upload your controller configuration files to a server to back up the configuration files.

The software releases are labeled as described here to help you determine which release to download. Click a controller 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. Click Download.

Save the file to your hard drive. Optional Disable the controller Note: For busy networks, controllers on high utilization, and small controller platforms, we recommend that you disable the From the File Type drop-down list, choose Code.

If you choose HTTP you will be prompted for the location of the file. Proceed to step 13 if you choose HTTP. 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.

In the File Path field, enter the directory path of the software. The default value is Click Download to download the software to the controller. A message indicating the status of the download is displayed. After the download is complete, click Reboot. If you are prompted to save your changes, click Save and Reboot.

Click OK to confirm your decision to reboot the controller. If you have disabled the

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