Table Of Contents
Release Notes for Cisco Aironet Access Points
for Firmware Release 11.02
This document describes requirements, installation procedures, and caveats for Cisco Aironet Access Point firmware version 11.02.
Firmware version 11.02 solves a physical layer incompatibility problem on 350 series Access Points. The 340 series does not have this incompatibility problem, so an upgrade from 11.01 to 11.02 does not provide any features or benefits for 340 series Access Points.
You must have a Cisco Aironet 340 or 350 series Access Point to install firmware version 11.02.
Your Access Point must be running firmware version 10.x or later to install firmware version 11.02.
Upgrading to a New Firmware Release
Determining the Firmware Version
The firmware version number appears in the upper-left corner of most Access Point management screens in the browser interface and at the top of the home (Summary Status) page in the command-line interfaces.
For instructions on installing Access Point firmware:
1. Click on the following link to go to the Cisco Aironet documentation home page on CCO:
2. Use the following link path to go to the product, document and chapter:
Aironet 350 Series Wireless LAN Products > Cisco Aironet 350 Series Access Points > Cisco Aironet Access Point Software Configuration Guide > Maintaining Firmware > Updating Firmware
Note Disable User Manager protection on your Access Point before upgrading from version 10.12 to 11.x. User Manager passwords created in version 10.12 are scrambled during the upgrade, and you need to recreate them in version 11.x. Passwords created in versions 10.13 or later are not affected.
Note To upgrade firmware from a file server, you must enter settings on the Access Point's FTP Server Setup page. Consult the "Updating from a File Server" section on page 5-5 in the Cisco Aironet Access Point Software Configuration Guide for more information.
Limitations and Restrictions
MIB File Compatible with Firmware Version 11.0x
The Aironet Access Point MIB file (AWCVX-MIB) is supported by Access Point firmware versions 11.00 and later. Earlier versions of firmware do not support this MIB.
Aironet Extensions Required in Repeater Mode
You must enable Aironet extensions on the AP Radio Advanced page when you set up the Access Point as a repeater. If you disable Aironet extensions when in repeater mode, connect a serial cable to the Access Point and enable Aironet extensions with the console interface.
Getting Bug Information on Cisco.com
If you are a Cisco registered user, you can use the Cisco TAC Software Bug Toolkit, which consists of three tools (Bug Navigator, Bug Watcher, and Search by Bug ID Number) that help you identify existing bugs (or caveats) in Cisco software products.
Access the TAC Software Bug Toolkit today at http://www.cisco.com/support/bugtools/.
The following caveats have been resolved in firmware version 11.02:
•350 Series Access physical layer incompatible with firmware version 11.01.
Firmware version 11.02 solves a physical layer incompatibility problem on 350 series Access Points. The 340 series does not have this incompatibility problem, so an upgrade from 11.01 to 11.02 will not add any features or benefits for 340 series Access Points.
The following caveats have not been resolved for firmware version 11.02:
•Difficult to end Telnet session (CSCav00156).
When you finish running a Telnet session to the Access Point you must close the Telnet window to end the session.
•Network response times might be slow on networks with thousands of client devices (CSCdr95686).
On large, flat networks with thousands of client devices, the Access Point might respond slowly to network traffic. Segmenting the network into subnets can improve Access Point performance.
•Must restart unit twice to enable standby mode (CSCds36123).
When you set up an Access Point as a standby unit, follow the instructions on page 7-5 in the Cisco Aironet Access Point Software Configuration Guide. When you complete the instruction steps, return to the Hot Standby page and click Start Hot Standby Mode again. When the unit restarts it is in standby mode.
•Corrupt characters sometimes appear in client names in the Association Table (CSCds56664).
Corrupt characters sometimes appear in the names of clients listed in the Access Point's Association Table.
•Access Point does not support client devices using LEAP with WEP keys of different lengths (CSCds61358).
The length of the transmit WEP key set on the Access Point determines the length of the session keys used by LEAP clients. For example, if the transmit key on the Access Point is a 128-bit key, all LEAP clients associated to the Access Point must use 128-bit WEP keys.
•Inoperable link in console and Telnet interfaces (CSCds71375 and CSCds71448).
In the console and Telnet (CLI) interfaces the link to the FTP Server Setup page is inoperable on the Update All Firmware From File Server and Selectively Update Firmware From File Server pages.
•No address filtering pages in console and Telnet interfaces (CSCdt02327).
You cannot set up MAC address filters through the console and Telnet interfaces. Use the browser interface to create and enable MAC address filters.
•User management passwords corrupted when updating firmware from version 10.12 to 11.0x (CSCdt07632).
When upgrading Access Point firmware from version 10.12 to 11.0x with user information in the user manager database, the user passwords are corrupted during the upgrade. This problem also occurs if the users are added to the user manager database in version 10.12, the firmware is upgraded to version 10.13, and then upgraded to version 11.0x. If the users and passwords are created in version 10.13, the passwords are not corrupted during the upgrade. To avoid being locked out of the Access Point, disable the user manager before upgrading from version 10.12 to 11.0x. After the upgrade, re-enter the user passwords and enable user manager.
•Broken help links on Access Point and Bridge CD (CSCdt12716).
If you change the default help root URL on a 350 series Access Point's Web Server Setup page to use the help files on the Cisco Aironet Access Point and Bridge CD, the help buttons on the AP Radio Port, AP Radio Advanced, AP Radio Hardware, and AP Radio Identification pages will not work. To use the most up-to-date online help, leave the default help root URL at its default setting.
•Successful firmware distribution reports error (CSCdt31501).
When distributing firmware to an Access Point running firmware version 11.01 or later, the distribute status on the distributing Access Point reports an error even when the distribution is successful. To verify that the distribution was successful, browse to the Access Point to which you sent the firmware and check that the firmware has been loaded.
•Repeater 340 series Access Points using 128-bit WEP do not pass client traffic (CSCdt15869).
Client devices can associate to 340 series Access Points set up as repeaters but cannot communicate when WEP is enabled.
•SNMP sysObjectID is identical for both 340 and 350 series Access Points (CSCdt21451).
Because both 340 and 350 series Access Points have the same SNMP sysObjectID, the devices are both perceived as 340 series Access Points by a network management platform such as HP OpenView.
•Client devices sometimes remain associated to disabled Access Point instead of switching to standby Access Point (CSCdt44184).
When the primary Access Point loses Ethernet connectivity, the standby Access Point tells the primary Access Point to shut off its radio so that clients associated to it will associate with the standby Access Point instead. However, sometimes the primary Access Point does not shut off its radio and does not disassociate its clients. Workaround: Power cycle both APs and set up Hot Standby again.
For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at http://www.cisco.com/tac. Select Wireless LAN under Top Issues.
Use the following documents in conjunction with this document.
•Quick Start Guide: Cisco Aironet Access Points
•Cisco Aironet Access Point Hardware Installation Guide
•Cisco Aironet Access Point Software Configuration Guide
The following sections provide sources for obtaining documentation from Cisco Systems.
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Software Configuration Tips on the Cisco TAC Home Page
Visit these Cisco TAC pages for more information on upgrading software. These pages require you to log in as a Cisco registered user.
Obtaining Technical Assistance
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