Table Of Contents
Finding the IOS Software Version
Upgrading to a New Software Release
Disable Radios to Prevent Unexpected Reboot When Upgrading System Software
Converting to Cisco IOS Software
Some Fields Not Updated During Upgrade to IOS Software
Support for Multiple Basic Service Set IDs
Wi-Fi 802.11h and Dynamic Frequency Selection Support
Wireless IDS - Excess Management Frame Detection
Wireless IDS - Authentication Attack Detection
WGB Mode on 1200 Series Access Points
Installation in Environmental Air Space
Configuring Power for 1130AG Access Points
Operating 5-GHz Radio Requires Power Injector, Power Module, or Catalyst 3550-24 PWR Switch
Access Point Requires 1200 Series Universal Power Supply and Power Injector
Default Username and Password Are Cisco
Changes to the Default Configuration—Radios Disabled and No Default SSID
Some Client Devices Cannot Associate When QoS Is Configured
Some Devices Disassociate When Multiple BSSIDs Are Added or Deleted
Enabling MBSSIDs Without VLANs Disables Radio Interface
Cannot Set Channel on DFS-Enabled Radios
Cisco 7920 Phones Require Firmware Version 1.09 or Later When Multiple BSSIDs Are Enabled
Proxy Mobile-IP Feature Removed
AIR-RM21A/AIR-RM22A Radio Modules Usually Set to Max Transmit Power
GRE Tunnelling Through WLSM Sometimes Requires MTU Setting Adjustments
TACACS+ and DHCP IP Address Sometimes Locks Out Administrators
Access Points Do Not Support Loopback Interface
Non-Cisco Aironet 802.11g Clients Might Require Firmware Upgrade
Throughput Option for 802.11g Radio Blocks Association by 802.11b Clients
Transmit Power Set to Maximum When You Install 802.11g Radio
Use Auto for Ethernet Duplex and Speed Settings
Use force-reload Option with archive download-sw Command
Radio MAC Address Appears in ACU
Radio MAC Address Appears in Access Point Event Log
Mask Field on IP Filters Page Behaves the Same As in CLI
Repeater Access Points Running IOS Software Cannot Associate to Parent Access Points Running VxWorks
Repeater Access Points Cannot Be Configured as WDS Access Points
System Software Upgrade Sometimes Fails Using Microsoft Internet Explorer 5.01 SP2
1100 Series Access Points with Boot Loader Version 12.2(4)JA Boot into Monitor Mode
Corrupt EAP Packet Sometimes Causes Error Message
When Cipher Is TKIP Only, Key Management Must Be Enabled
Cisco CKM Supports Spectralink Phones
Non-Cisco Aironet Clients Sometimes Fail 802.1x Authentication
Pings and Link Tests Sometimes Fail to Clients with Both Wired and Wireless Network Connections
Layer 3 Mobility Not Supported on Repeaters and Workgroup Bridges
WLSM Required for Layer 3 Mobility
Change to Default IP Address Behavior
Resolved Caveats in Cisco IOS Release 12.3(4)JA1
Resolved Caveats in Cisco IOS Release 12.3(4)JA
Obtaining Technical Assistance
Cisco Technical Support Website
Definitions of Service Request Severity
Obtaining Additional Publications and Information
Release Notes for Cisco Aironet 350, 1100, 1130AG, 1200, and 1230AG Series Access Points for Cisco IOS Release 12.3(4)JA1
September 12, 2005
These release notes describe features, enhancements, and caveats for Cisco IOS Release 12.3(4)JA1. They also provide important information about Cisco Aironet 350, 1100, 1130AG, 1200, and 1230AG series access points.
Contents
These release notes contain the following sections:
•
Obtaining Technical Assistance
•
Introduction
The Cisco Aironet Access Point is a wireless LAN transceiver that acts as the connection point between wireless and wired networks or as the center point of a standalone wireless network. In large installations, the roaming functionality provided by multiple access points enables wireless users to move freely throughout the facility while maintaining uninterrupted access to the network.
You can configure and monitor 350, 1100, and 1200 series access points using the command-line interface (CLI), the web-browser interface, or Simple Network Management Protocol (SNMP).
System Requirements
You can install Cisco IOS Release 12.3(4)JA1 on all 1100 series access points, 1130AG access points, and on 1230AG access points.
Note
http://www.cisco.com/univercd/cc/td/doc/product/wireless/airo1100/accsspts/i1232ja/i1232sc/index.htmYou can also install this release on 350 and 1200 series access points that have been converted to run Cisco IOS software. You can tell whether an access point runs VxWorks or Cisco IOS software by looking at the GUI: the GUI on an access point running VxWorks has a yellow and red color scheme, and the GUI on an access point running Cisco IOS software has a green, light-green, and black color scheme.
Your 350 series access point must run one of these VxWorks versions before you can convert to IOS software: 12.03T, 12.02T1, 12.01T1, 11.23T, or 11.21. Your 1200 series access point must run one of these VxWorks versions before you can convert to IOS software: 12.03T, 12.02T1, 12.01T1, 12.00T, 11.56, or 11.54T. If your access point runs version 12.04, you must downgrade to a supported VxWorks version before upgrading to IOS software.
The conversion upgrade image for 350 series access points installs Cisco IOS Release 12.2(13)JA1 on your 350 series access point. The conversion upgrade image for 1200 series access points installs Cisco IOS Release 12.2(13)JA2 on your 1200 series access point.
Note
Finding the IOS Software Version
To find the version of IOS software running on your access point, use a Telnet session to log into the access point and enter the show version EXEC command. This example shows command output from an access point running Cisco IOS Release 12.2(15)JA:
ap1200>show versionCisco Internetwork Operating System SoftwareIOS (tm) C1200 Software (C1200-K9W7-M), Version 12.2(15)JACopyright (c) 1986-2004 by Cisco Systems, Inc.On access points running IOS software, you can also find the software version on the System Software Version page in the access point's web-browser interface. If your access point does not run IOS software, the software version appears at the top left of most pages in the web-browser interface.
Upgrading to a New Software Release
For instructions on installing access point software:
1.
http://www.cisco.com/univercd/cc/td/doc/product/wireless/index.htm
2.
Aironet 1200 Series Wireless LAN Products > Cisco Aironet 1200 Series Access Points > Aironet 1200 Series Access Points, Cisco IOS Release 12.3(4)JA > Cisco IOS Software Configuration Guide for Cisco Aironet Access Points > Managing Firmware and Configurations > Working with Software Images3.
http://www.cisco.com/public/sw-center/sw-ios.shtml
Log into Cisco.com to use the Cisco IOS Upgrade Planner.
Disable Radios to Prevent Unexpected Reboot When Upgrading System Software
If your access point runs Cisco IOS Release 12.2(11)JA, 12.2(11)JA1, or 12.2(11)JA2, your access point might unexpectedly reboot after you upgrade to a later Cisco IOS Release. Because of a rare timing condition that affects the radios, the access point sometimes reboots immediately after the upgrade when the radios are enabled. However, after the access point reboots the upgrade is complete and the access point operates normally. To prevent the access point from rebooting unexpectedly, disable the radio interfaces before upgrading software.
Follow these steps to disable the radio interfaces using the web-browser interface:
Step 1
Figure 1 Network Interfaces: Radio Settings Page
Step 2
Step 3
Step 4
Beginning in privileged EXEC mode, follow these steps to disable the access point radios using the CLI:
If your access point has two radios, repeat these steps for the second radio. Use the no form of the shutdown command to enable the radio.
Converting to Cisco IOS Software
If your 350 or 1200 series access point does not run IOS software, you can use the conversion utility or the conversion upgrade image to convert the access point system to IOS software. Use the conversion utility to maintain the current configuration after the conversion, or load the upgrade image to convert to IOS software without saving the current configuration. Your access point must be running one of these VxWorks firmware versions before you can convert to IOS software:
•
•
The conversion upgrade image for 350 series access points installs Cisco IOS Release 12.2(13)JA1 on your 350 series access point. The conversion upgrade image for 1200 series access points installs Cisco IOS Release 12.2(13)JA2 on your 1200 series access point.
Note
Note
For complete instructions on using the conversion utility, refer to the Cisco Aironet Conversion Tool for Cisco IOS Software, 2.0 Administrator Guide for Windows. Click this link to browse to the Administrator Guide:
http://www.cisco.com/en/US/products/hw/wireless/ps430/products_administration_guides_list.html
To download the conversion utility or the upgrade image, click this link to browse to the Cisco IOS Software Center on Cisco.com:
http://www.cisco.com/public/sw-center/sw-ios.shtml
On the Cisco IOS Software Center page, enter your Cisco.com username and password to use the Feature Navigator or the Cisco IOS Upgrade Planner, or click Wireless Software to go to the Wireless LAN Software page. Download the conversion utility or the upgrade image for 350 or 1200 series access points. You can also download instructions for using the utility and the image.
Some Fields Not Updated During Upgrade to IOS Software
When you upgrade an access point to run Cisco IOS software, some fields that are reported in the console messages during the upgrade are blank or are populated with zeros. However, blank or zero fields are normal after a successful upgrade, because 350 and 1200 series access points do not support that information. This example shows fields that might appear blank or populated with zeros:
32K bytes of flash-simulated non-volatile configuration memory.Base Ethernet MAC Address: 00:05:9A:38:42:91Part Number: 0-0000-00PCA Assembly Number: 000-00000-00PCA Revision Number:PCB Serial Number:Top Assembly Part Number: 000-00000-00Top Assembly Serial Number:Top Revision Number:Product/Model Number: AIR-AP352-IOS-UPGRDUpdates to Existing Features
Table 1 lists updates to existing features in Cisco IOS Release 12.2(15)XR and earlier. Cisco IOS Software Release 12.3(4)JA includes these updates for these features and platforms.
Table 1 Updates to Existing Features in Cisco IOS Release 12.3(4)JA
IP-Based Wireless Domain Services (WDS)
x
x
x
x
Layer 3 Mobility Service via Fast Secure Roaming Tunnels
x
x
x
x
Work Group Bridge (WGB) Mode
x
-
x1
x1
SNMPv3
x1
x1
x1
x1
1 Support for existing feature added in this release.
New Features
This release does not contain new features. It supports the features introduced in Cisco IOS Release 12.3(4)JA. Table 2 lists the features that are supported on the devices that support Cisco IOS Release 12.3(4)JA.
Table 2 New Features Introduced for Access Points in Cisco IOS Release 12.3(2)JA
Support for multiple BSSIDs (mBSSID)
-
x1
x
x2
x
Support Wi-Fi 802.11h and Dynamic Frequency Selection (DFS)
-
-
x
x
x
Wireless IDS - Excess Management Frame Detection
-
x
x
x
x
Wireless IDS - Authentication Attack Detection
-
x
x
x
x
Frame Monitor Mode
-
x
x
x
x
Location Based Services
-
x
x
x
x
1 Supported only on units that contain 802.11g radios.
2 Supported only on units that contain 802.11g radios or RM21/22A 5-GHz radio modules.
Support for Multiple Basic Service Set IDs
This feature permits a single access point to appear to the WLAN as multiple virtual access points. It does this by assigning an access point with multiple Basic Service Set IDs (MBSSIDs) or MAC addresses.
To determine whether a radio supports multiple basic SSIDs, enter the show controllers command for the radio interface. The radio supports multiple basic SSIDs if the results include this line:
Number of supported simultaneous BSSID on radio_interface: 8Wi-Fi 802.11h and Dynamic Frequency Selection Support
This feature allows Cisco access points configured at the factory for use in Europe and Singapore to detect radar signals such as military and weather sources and switch channels on the access points.
Wireless IDS - Excess Management Frame Detection
This feature provides scanner access points the ability to detect that WLAN management and control frames exceeded a configurable threshold.
Wireless IDS - Authentication Attack Detection
This feature requires Cisco access points to detect and report on excessive attempted or failed authentication attempts (Authentication failure detection and Excess EAPoL authentication).
Frame Monitor Mode
This feature requires a Scan-only access point to forward all 802.11 frames seen to a protocol analysis station for network troubleshooting from remote sites via partner applications or partner Intrusion Detection companies or both.
Location Based Services (LBS)
This feature enables a Cisco access point to detect frames from LBS tags and send them to a pre-configured IP destination such as a third-party LBS server.
SNMPv3
This feature enables SNMPv3 support on Cisco access points to provide an additional level of security.
WGB Mode on 1200 Series Access Points
This feature allows 1200 series access points to support Work Group Bridge (WGB) functionality on either the 802.11b/g or 802.11a radio.
This release does not contain new features. It supports the features introduced in Cisco IOS Release 12.3(4)JA. Click this link to browse to the release notes for Cisco IOS Release 12.3(4)JA:
http://cisco.com/en/US/products/hw/wireless/ps430/prod_release_note09186a008042a3a3.html
Installation Notes
This section contains information you should keep in mind when installing 350, 1100, and 1200 series access points.
Installation in Environmental Air Space
This section provides information on installing 1100 and 1200 series access points in environmental air space, such as above suspended ceilings.
Cisco Aironet 1100, 1130, and 1200 Series Access Points provide adequate fire resistance and low smoke-producing characteristics suitable for operation in a building's environmental air space, such as above suspended ceilings, in accordance with Section 300-22(C) of the National Electrical Code (NEC) and Sections 2-128, 12-010(3) and 12-100 of the Canadian Electrical Code, Part 1, C22.1.
Caution
Note
Power Considerations
This section describes issues you should consider before applying power to an access point.
Caution
Caution
Caution
Use Only One Power Option
You cannot provide redundant power to 1100, 1130, and 1200 series access points with both DC power to its power port and inline power from a patch panel or powered switch to the access point's Ethernet port. If you apply power to the access point from both sources, the switch or power patch panel might shut down the port to which the access point is connected. Figure 2 shows the power configuration that can shut down the port on the patch panel or powered switch.
Figure 2 Improper Power Configuration Using Two Power Sources
Configuring Power for 1130AG Access Points
The 1130AG access point disables the radio interfaces when the unit senses that the power source to which it is connected does not provide enough power. Depending on your power source, you might need to enter the power source type in the access point configuration. Use the System Software: System Configuration page on the web-browser interface to select a power option. Figure 3 shows the System Power Settings section of the System Configuration page.
Figure 3 Power Options on the System Software: System Configuration Page
Using the AC Power Adapter
If you use the AC power adapter to provide power to the 1130AG access point, you do not need to adjust the access point configuration.
Using a Switch Capable of IEEE 802.3af Power Negotiation
If you use a switch to provide Power over Ethernet (PoE) to the 1130AG access point and the switch supports the IEEE 802.3af power negotiation standard, select Power Negotiation on the System Software: System Configuration page.
Using a Switch That Does Not Support IEEE 802.3af Power Negotiation
If you use a switch to provide Power over Ethernet (PoE) to the 1130AG access point and the switch does not support the IEEE 802.3af power negotiation standard, select Pre-Standard Compatibility on the System Software: System Configuration page.
Using a Power Injector
If you use a power injector to provide power to the 1130AG access point, select Power Injector on the System Software: System Configuration page and enter the MAC address of the switch port to which the access point is connected.
Operating 5-GHz Radio Requires Power Injector, Power Module, or Catalyst 3550-24 PWR Switch
The 1200 series power injector and the 1200 series power module support operation of the 5-GHz radio in the access point. Currently, the Catalyst 3550-24 PWR switch supports power for both the 2.4-GHz radio and the 5-GHz radio. Other switches and power patch panels might not provide enough power for the 5-GHz radio.
Access Point Requires 1200 Series Universal Power Supply and Power Injector
The 350 series universal power supply and power injector are not compatible with the 1200 series access point. If you use a power injector or a power module to provide power to a 1200 series access point, you must use a 1200 series universal power supply. If you need to use a power injector to inject power into the access point's Ethernet port, you must use a 1200 series power injector.
Unpowered 1100 Series Access Points Cause Loopback When Connected to Switches Without Loopback Detection
When you connect an unpowered 1100 series access point to a switch without loopback detection, the access point causes a loopback. To avoid this problem, make sure loopback detection is enabled on the switch to which the access point is connected. If your switch does not have loopback detection, disconnect the access point from the switch when the access point power is off.
Antenna Installation
For instructions on the proper installation and grounding of external antennas for 1200 series access points, refer to the National Fire Protection Association's NFPA 70, National Electrical Code, Article 810, and the Canadian Standards Association's Canadian Electrical Code, Section 54.
Warning
Important Notes
This section describes important information about the access point.
SNTP Replaces NTP
In Cisco IOS Release 12.3(4)JA1, access points and bridges support SNTP instead of NTP. This change improves the reliability of the system time on access points and bridges, allows access points and bridges to synchronize with any NTP server, and prevents client devices from synchronizing to an access point or bridge clock that might not be accurate.
Default Username and Password Are Cisco
When you open the access point interface, you must enter a username and password. The default username for administrator login is Cisco, and the default password is Cisco. Both the username and password are case sensitive.
Changes to the Default Configuration—Radios Disabled and No Default SSID
In this release, the radio or radios are disabled by default, and there is no default SSID. You must create an SSID and enable the radio or radios before the access point will allow wireless associations from other devices. These changes to the default configuration improve the security of newly installed access points.
Some Client Devices Cannot Associate When QoS Is Configured
Some wireless client devices, including Dell Axim handhelds and Hewlett-Packard iPaq HX4700 handhelds, cannot associate to an access point when the access point is configured for QoS. To allow these clients to associate, disable QoS on the access point. You can use the QoS Policies page on the access point GUI to disable QoS, or enter this command on the CLI:
ap(config-if)#no dot11 qos mode
Some Devices Disassociate When Multiple BSSIDs Are Added or Deleted
Devices on your wireless LAN that are configured to associate to a specific access point based on the access point MAC address (such as client devices, repeaters, hot standby units, or workgroup bridges) might lose their association when you add or delete a multiple BSSID. When you add or delete a multiple BSSID, check the association status of devices configured to associate to a specific access point. If necessary, reconfigure the disassociated device to use the BSSID's new MAC address.
Enabling MBSSIDs Without VLANs Disables Radio Interface
If you use the mbssid configuration interface command to enable multiple BSSIDs on a specific radio interface but VLANs are not configured on the access point, the access point disables the radio interface. To re-enable the radio, you must shut down the radio, disable multiple BSSIDs, and re-enable the radio. This example shows the commands you use to re-enable the radio:
AP1134(config)# interface d1AP1134(config-if)# shutAP1134(config-if)# no mbssidAP1134(config-if)# no shutAfter you re-enable the radio, you can enable VLANs on the access point and enable multiple BSSIDs.
Cannot Set Channel on DFS-Enabled Radios
Access points with 5-GHz radios configured at the factory for use in Europe and Singapore now comply with regulations that require radio devices to use Dynamic Frequency Selection (DFS) to detect radar signals and avoid interfering with them.You cannot manually set the channel on DFS-enabled radios.
Cisco 7920 Phones Require Firmware Version 1.09 or Later When Multiple BSSIDs Are Enabled
When multiple BSSIDs are configured on the access point, Cisco 7920 wireless IP phones must run firmware version 1.09 or later.
Proxy Mobile-IP Feature Removed
The proxy Mobile-IP feature is not supported in Cisco IOS Releases 12.3(2)JA1 and later.
AIR-RM21A/AIR-RM22A Radio Modules Usually Set to Max Transmit Power
AIR-RM21A and AIR-RM22A radio modules measure transmit power in decibels per milliwatt (dBm), but earlier versions of 802.11a radios in Cisco Aironet access points measure power in milliwatts (mW). Because power settings in mW do not translate directly to settings in dBm, the access point usually uses the default power setting of maximum when you install a new AIR-RM21A or AIR-RM22A radio module.
Table 3 lists 802.11a transmit power settings in mW and the power settings that the access point assigns to a new radio module.
Table 3 Transmit Power Settings Assigned to New Radio Modules
5
5 dBm (approximately 3 mW)
10
maximum (17 dBm)
20
maximum
40
maximum
GRE Tunnelling Through WLSM Sometimes Requires MTU Setting Adjustments
If client devices on your wireless LAN cannot use certain network applications or cannot browse to Internet sites, you might need to adjust the MTU setting on the client devices or other network devices. For more information, refer to the Tech Note at this URL:
http://www.cisco.com/en/US/tech/tk827/tk369/technologies_tech_note09186a0080093f1f.shtml
TACACS+ and DHCP IP Address Sometimes Locks Out Administrators
When you configure an access point for TACACS+ administration and to receive an IP address from the DHCP server, administrators might be locked out of the access point after it reboots if the administrator does not have a local username and password configured on the access point. This issue does not affect access points configured with a static IP address. Administrators who have been locked out must regain access by using the mode button to reset the unit to default settings.
Access Points Do Not Support Loopback Interface
You must not configure a loopback interface on the access point.
Caution
Non-Cisco Aironet 802.11g Clients Might Require Firmware Upgrade
Some non-Cisco Aironet 802.11g client devices require a firmware upgrade before they can associate to the 802.11g radio in the access point. If your non-Cisco Aironet 802.11g client device does not associate to the access point, download and install the latest client firmware from the manufacturer's website.
Throughput Option for 802.11g Radio Blocks Association by 802.11b Clients
When you configure the 802.11g access point radio for best throughput, the access point sets all data rates to basic (required). This setting blocks association from 802.11b client devices. The best throughput option appears on the web-browser interface Express Setup and Radio Settings pages and in the speed CLI configuration interface command.
Transmit Power Set to Maximum When You Install 802.11g Radio
When you replace the 802.11b radio in a 1200 series access point with an 802.11g radio, the 802.11g radio is set to the maximum transmit power allowed in your regulatory domain regardless of the power setting configured on the 802.11b radio. After you install the 802.11g radio and the access point reboots, configure the 802.11g radio to the preferred transmit power.
Use Auto for Ethernet Duplex and Speed Settings
Cisco recommends that you use auto, the default setting, for both the speed and duplex settings on the access point Ethernet port. When your access point receives inline power from a switch, any change in the speed or duplex settings that resets the Ethernet link reboots the access point. If the switch port to which the access point is connected is not set to auto, you can change the access point port to half or full to correct a duplex mismatch and the Ethernet link is not reset. However, if you change from half or full back to auto, the link is reset and, if your access point receives inline power from a switch, the access point reboots.
Note
Use force-reload Option with archive download-sw Command
When you upgrade access point or bridge system software by entering the archive download-sw command on the CLI, you must use the force-reload option. If the access point or bridge does not reload the Flash after the upgrade, the pages in the web-browser interface might not reflect the upgrade. This example shows how to upgrade system software successfully using the archive download-sw command:
AP# archive download-sw /force-reload /overwrite tftp://10.0.0.1/image-nameRadio MAC Address Appears in ACU
When a Cisco Aironet client device associates to an access point running IOS software, the access point MAC address that appears on the Status page in the Aironet Client Utility (ACU) is the MAC address for the access point radio. The MAC address for the access point Ethernet port is printed on the label on the back of the access point.
Radio MAC Address Appears in Access Point Event Log
When a client device roams from an access point (such as access point alpha) to another access point (access point bravo), a message appears in the event log on access point alpha stating that the client roamed to access point bravo. The MAC address that appears in the event message is the MAC address for the radio in access point bravo. The MAC address for the access point Ethernet port is printed on the label on the back of the access point.
Mask Field on IP Filters Page Behaves the Same As in CLI
In Cisco IOS Release 12.2(8)JA and later, the mask that you enter in the Mask field on the IP Filters page in the access point GUI behaves the same way as a mask that you enter in the CLI. If you enter 255.255.255.255 as the mask, the access point accepts any IP address. If you enter 0.0.0.0, the access point looks for an exact match with the IP address that you entered in the IP Address field.
Repeater Access Points Running IOS Software Cannot Associate to Parent Access Points Running VxWorks
Repeater access points running Cisco IOS software cannot associate to parent access points that do not run IOS software (all 340 series access points, and 350 and 1200 series access points that have not been converted to run IOS software).
Repeater Access Points Cannot Be Configured as WDS Access Points
Repeater access points do not support WDS. You cannot configure a repeater access point as a WDS access point, and if a root access point becomes a repeater in fallback mode, it cannot provide WDS.
Crossover Cable Sometimes Needed When Ethernet Speed and Duplex Set to Fixed on 1100 Series Access Points
If you change the speed and duplex settings from auto to fixed on an 1100 series access point's Ethernet port, the auto-MDIX feature on the port is disabled. When auto-MDIX is disabled, you must determine whether to use a straight-through or a crossover cable to connect the access point Ethernet port to another device. If the Ethernet link goes down after you set the speed and duplex to fixed, try changing the Ethernet cable from crossover to straight-through or from straight-through to crossover.
Cannot Perform Link Tests on Non-Cisco Aironet Client Devices and on Cisco Aironet 802.11g Client Devices
The link test feature on the web-browser interface does not support non-Cisco Aironet client devices nor Cisco Aironet 802.11g client devices.
System Software Upgrade Sometimes Fails Using Microsoft Internet Explorer 5.01 SP2
A system software upgrade sometimes fails when you use Microsoft Internet Explorer 5.01 SP2 to upgrade system software using the HTTP Upgrade page in the web-browser interface. Use a later version of Microsoft Internet Explorer to perform HTTP system software upgrades, or use TFTP to upgrade system software. Click this URL to browse to the Cisco IOS Software Configuration Guide for Cisco Aironet Access Points for complete instructions on performing software upgrades:
http://www.cisco.com/en/US/products/hw/wireless/ps4570/prod_configuration_guides_list.html
1100 Series Access Points with Boot Loader Version 12.2(4)JA Boot into Monitor Mode
When the Ethernet port is disabled on an 1100 series access point running boot loader version 12.2(4)JA, the access point boots into monitor mode when it reboots. To avoid this problem, connect the access point Ethernet port to one of the following:
•
•
Remove power from the access point and reapply power to reboot the unit. When the access point senses an Ethernet connection, it boots normally.
Corrupt EAP Packet Sometimes Causes Error Message
During client authentication, the access point sometimes receives a corrupt EAP packet and displays this error message:
Oct 1 09:00:51.642 R: %SYS-2-GETBUF: Bad getbuffer, bytes= 28165 -Process= "Dot11 Dot1x process", ipl= 0, pid= 32 -Traceback= A2F98 3C441C 3C7184 3C604C 3C5E14 3C5430 124DDCYou can ignore these messages.
When Cipher Is TKIP Only, Key Management Must Be Enabled
When you configure TKIP-only cipher encryption (not TKIP + WEP 128 or TKIP + WEP 40) on any radio interface or VLAN, every SSID on that radio or VLAN must be set to use WPA or CCKM key management. If you configure TKIP on a radio or VLAN but you do not configure key management on the SSIDs, client authentication fails on the SSIDs.
Cisco CKM Supports Spectralink Phones
Cisco CKM (CCKM) key management is designed to support voice clients that require minimal roaming times. To date, CCKM supports only Spectralink Wireless Phones. Other voice clients have not been tested with CCKM and are not supported.
Non-Cisco Aironet Clients Sometimes Fail 802.1x Authentication
Some non-Cisco Aironet client adapters do not perform 802.1x authentication to the access point unless you configure Open authentication with EAP. To allow both Cisco Aironet clients using LEAP and non-Cisco Aironet clients using LEAP to associate using the same SSID, you might need to configure the SSID for both Network EAP authentication and Open authentication with EAP.
Pings and Link Tests Sometimes Fail to Clients with Both Wired and Wireless Network Connections
When you ping or run a link test from an access point to a client device installed in a PC running Microsoft Windows 2000, the ping or link test sometimes fails when the client has both wired and wireless connections to the LAN. Microsoft does not recommend this configuration. For more information, refer to Microsoft Knowledge Base article 157025 at this URL:
http://support.microsoft.com/default.aspx?scid=kb;en-us;157025&Product=win2000
Layer 3 Mobility Not Supported on Repeaters and Workgroup Bridges
Repeater access points and workgroup bridges cannot associate to an SSID configured for Layer 3 mobility. Layer 3 mobility is not supported on repeaters and workgroup bridges.
WLSM Required for Layer 3 Mobility
You must use a Wireless LAN Services Module (WLSM) as your WDS device in order to properly configure Layer 3 mobility. If you enable Layer 3 mobility for an SSID and your WDS device does not support Layer 3 mobility, client devices cannot associate using that SSID.
Change to Default IP Address Behavior
Cisco IOS Releases 12.3(2)JA1 and later change the default behavior of access points requesting an IP address from a DHCP server:
•
•
Caveats
This section lists open caveats in Cisco IOS Release 12.3(4)JA and resolved caveats in Cisco IOS Releases 12.3(4)JA and 12.3(4)JA1.
Open Caveats
These caveats are open in Cisco IOS Release 12.3(4)JA:
•
•
•
•
•
Workaround: Configure the access point for WPAv2 with TKIP + WEP40/128, or configure the access point for mandatory WPAv2.
•
Workaround: Use the CLI to create VLANs on 350 series access points.
•
Workaround: Use the show cont d0 command to find the correct MAC address for the 802.11b radio interface.
•
•
Workaround: If the mbssid command fails, disable the radio interface and try the command again.
•
•
•
Workaround: If you plan to configure several VLANs before configuring SSIDs, avoid the reset and down state by disabling the radio interfaces before you configure the VLANs.
•
•
•
•
Workaround: Increase the beacon period.
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Workaround: If multiple BSSIDs are configured on the access point, disable the SSIDL feature.
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Resolved Caveats in Cisco IOS Release 12.3(4)JA1
The following caveat is resolved in Cisco IOS Release 12.3(4)JA1:
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Cisco IOS may permit arbitrary code execution after exploitation of a heap-based buffer overflow vulnerability. Cisco has included additional integrity checks in its software, as further described below, that are intended to reduce the likelihood of arbitrary code execution.
Cisco has made free software available that includes the additional integrity checks for affected customers.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20051102-timers.shtml.
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Resolved Caveats in Cisco IOS Release 12.3(4)JA
These caveats are resolved in Cisco IOS Release 12.3(4)JA:
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These attacks, which only affect sessions terminating or originating on a device itself, can be of three types:
1. Attacks that use ICMP "hard" error messages
2. Attacks that use ICMP "fragmentation needed and Don't Fragment (DF) bit set" messages, also known as Path Maximum Transmission Unit Discovery (PMTUD) attacks
3. Attacks that use ICMP "source quench" messagesSuccessful attacks may cause connection resets or reduction of throughput in existing connections, depending on the attack type.
Multiple Cisco products are affected by the attacks described in this Internet draft.
Cisco has made free software available to address these vulnerabilities. In some cases there are workarounds available to mitigate the effects of the vulnerability.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20050412-icmp.shtml.
The disclosure of these vulnerabilities is being coordinated by the National Infrastructure Security Coordination Centre (NISCC), based in the United Kingdom. NISCC is working with multiple vendors whose products are potentially affected. Its posting can be found at: http://www.niscc.gov.uk/niscc/docs/re-20050412-00303.pdf?lang=en.
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*Mar 1 00:55:20.083: %DOT11-4-TKIP_MIC_FAILURE_REPORT: Received TKIP Michael MICfailure report from the station 000a.b7df.1943 on the packet (TSC=0x7507000000000000)encrypted and protected by group key.•
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These attacks, which only affect sessions terminating or originating on a device itself, can be of three types:
1. Attacks that use ICMP "hard" error messages
2. Attacks that use ICMP "fragmentation needed and Don't Fragment (DF) bit set" messages, also known as Path Maximum Transmission Unit Discovery (PMTUD) attacks
3. Attacks that use ICMP "source quench" messagesSuccessful attacks may cause connection resets or reduction of throughput in existing connections, depending on the attack type.
Multiple Cisco products are affected by the attacks described in this Internet draft.
Cisco has made free software available to address these vulnerabilities. In some cases there are workarounds available to mitigate the effects of the vulnerability.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20050412-icmp.shtml.
The disclosure of these vulnerabilities is being coordinated by the National Infrastructure Security Coordination Centre (NISCC), based in the United Kingdom. NISCC is working with multiple vendors whose products are potentially affected. Its posting can be found at: http://www.niscc.gov.uk/niscc/docs/re-20050412-00303.pdf?lang=en.
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If You Need More Information
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 select caveats of any severity. Click this URL to browse to the Bug Toolkit:
http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl
(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.)
Troubleshooting
For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at http://www.cisco.com/tac. Click Technology Support, choose Wireless from the menu on the left, and click Wireless LAN.
Documentation Updates
This section lists changes, errors, and omissions from user documentation for access points.
Omissions
Access point quick start guides do not yet describe these features:
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When you connect an 1100 series access point with a default configuration to your LAN, the 1100 series access point makes several attempts to get an IP address from the DHCP server. If it does not receive an address, it assigns itself the IP address 10.0.0.1 for five minutes. During this five-minute window, you can browse to the default IP address and configure a static address. If after five minutes the access point is not reconfigured, it discards the 10.0.0.1 address and reverts to requesting an address from the DHCP server. If it does not receive an address, it sends requests indefinitely. If you miss the five-minute window for browsing to the access point at 10.0.0.1, you can power-cycle the access point to repeat the process.
Related Documentation
This section lists documents related to Cisco IOS Release 12.2(15)JA and to 350, 1100, and 1200 series access points.
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Obtaining Documentation
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
You can access international Cisco websites at this URL:
http://www.cisco.com/public/countries_languages.shtml
Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm
You can order Cisco documentation in these ways:
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http://www.cisco.com/en/US/partner/ordering/index.shtml
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Documentation Feedback
You can send comments about technical documentation to bug-doc@cisco.com.
You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service contract, contact your reseller.
Cisco Technical Support Website
The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day, 365 days a year, at this URL:
http://www.cisco.com/techsupport
Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
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Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool provides recommended solutions. If your issue is not resolved using the recommended resources, your service request is assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:
http://www.cisco.com/techsupport/servicerequest
For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/techsupport/contacts
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.
Severity 1 (S1)—Your network is "down," or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.
Severity 3 (S3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
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http://www.cisco.com/go/marketplace/
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http://cisco.com/univercd/cc/td/doc/pcat/
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http://www.cisco.com/go/iqmagazine
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http://www.cisco.com/en/US/learning/index.html
This document is to be used in conjunction with the documen
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