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Cisco Aironet 1400 Series

Release Notes for Cisco Aironet 1410 Bridges for Cisco IOS Release 12.3(4)JA1

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Release Notes for Cisco Aironet 1410 Bridges for Cisco IOS Release 12.3(4)JA1

Table Of Contents

Release Notes for Cisco Aironet 1410 Bridges
for Cisco IOS Release 12.3(4)JA1

Contents

Introduction

System Requirements

Finding the Software Version

Upgrading to a New Software Release

New Features

SNMPv3

Installation Notes

Bridge Installation

Stacking Bridges

Important Notes

Default SSID and Distance Settings Change When You Change Role in Radio Network

Default Encryption Key 2 Is Set by Bridge

Limitation to PAgP Redundancy on Switches Connected by Bridge Links

CLI Command power client n Is Not Supported

Default Infrastructure SSID

ARP Table Is Corrupted When Multiple BVIs Are Configured

Bridge Power Up LED Colors

Bridge Cannot Detect Simultaneous Image Downloads

Bridge Cannot Detect Invalid Software When Using copy Command

Telnet Session Sometimes Hangs or Will Not Start During Heavy Traffic

Caveats

Open Caveats

Resolved Caveats in Cisco IOS Release 12.3(4)JA1

Resolved Caveats in Cisco IOS Release 12.3(4)JA

Troubleshooting

Documentation Updates

Stacking Bridges Section Changes

Related Documentation

Obtaining Documentation and Submitting a Service Request


Release Notes for Cisco Aironet 1410 Bridges
for Cisco IOS Release 12.3(4)JA1


September 12, 2005

These release notes describe new features and open and resolved caveats for Cisco IOS Release 12.3(4)JA1. They also provide important information about the Cisco Aironet 1410 Bridge (hereafter called bridge).

Contents

These release notes contain the following sections:

Introduction

System Requirements

New Features

Installation Notes

Important Notes

Caveats

Troubleshooting

Documentation Updates

Related Documentation

Obtaining Documentation and Submitting a Service Request

Introduction

The Cisco Aironet 1400 Series Bridge is a wireless device designed for building-to-building wireless connectivity. Operating in the 5.8-GHz UNII 3 band (5725 to 5825 MHz), derived from the 802.11a standard, the bridge delivers 6 to 54 Mbps data rates without the need for a license. The bridge is a self-contained unit designed for outdoor installations, providing differing antenna gains as well as coverage patterns and supports both point-to-point and point-to-multipoint configurations.

The bridge uses a browser-based management system, but you can also configure the bridge using the command-line interface (CLI) through a Telnet session, Cisco IOS commands, or Simple Network Management Protocol (SNMP).

System Requirements

You can install Cisco IOS Release 12.3(4)JA1 on all 1400 series bridges.

Finding the Software Version

To find the version of Cisco IOS software running on your bridge, use a Telnet session to log into the bridge and enter the show version EXEC command. This example shows command output from a bridge running Cisco IOS Release 12.2(13)JA2:

bridge> show version
Cisco Internetwork Operating System Software
IOS (tm) C1410 Software (C1410-K9W7-M), Version 12.2(13)JA2
Copyright (c) 1986-2003 by Cisco Systems, Inc.
 
   

You can also find the software version on the System Software Version page in the bridge's web-browser interface.

Upgrading to a New Software Release

For instructions on installing bridge software:

1. Click this link to go to the Product/Technology Support page:

http://www.cisco.com/cisco/web/psa/default.html

Choose Wireless > Outdoor Wireless > Cisco Aironet 1400 Series, scroll down and click Configure Guides.

2. Click this link to browse to the Cisco IOS Software Center on Cisco.com:

http://www.cisco.com/cisco/software/navigator.html

On the Web page, log in to access the Feature Navigator or the Cisco IOS Upgrade Planner, or click Wireless Software to go to the Wireless LAN Software page.

New Features

This release does not contain new features. It supports the features introduced in Cisco IOS Release 12.3(4)JA This section lists new features in Cisco IOS Release 12.3(4)JA.

SNMPv3

This feature enables SNMPv3 support on Cisco Aironet bridges to provide an additional level of security.

Installation Notes

This section contains important information to keep in mind when installing your bridge.

Bridge Installation

The bridge is available in two configurations:

Integrated antenna bridge (with 22.5-dBi directional antenna)

External antenna bridge (with antenna connector for use with an external antenna)


Note To meet regulatory restrictions, the external antenna bridge configuration and the external antenna must be professionally installed.



Note When installing the dual-coax cable, it is acceptable to unzip or pull the two cables apart at the ends if more separation is needed between the male F connectors.


Personnel installing the bridge must understand wireless bridging techniques, antenna alignment and adjustment, and grounding methods. The integrated antenna configuration can be installed by an experienced IT professional.

Stacking Bridges

You can double the throughput or create a standby link by stacking two bridges. A stacked installation consists of two bridge systems installed at the same physical location. For detailed mounting instructions refer to the Cisco Aironet 1400 Series Wireless Bridge Mounting Instructions that shipped with your bridge.


Note The bridge antennas must be separated by a minimum of 6.56 ft (2 m) from each other and from other co-located antennas.


Important Notes

This section describes important information about the bridge.

Default SSID and Distance Settings Change When You Change Role in Radio Network

If the bridge's SSID has not been changed from the default setting and you select Install Automatic Mode as the bridge's role in radio network setting, the SSID automatically changes from tsunami to autoinstall. When you change the role in radio network from Install Automatic Mode to Root or Non-Root, the SSID changes automatically from autoinstall back to tsunami. However, if you change the SSID from its default setting, changing the role in radio network setting does not change the SSID.

In Install Automatic Mode, the default distance setting is 99 km. When you change the role in radio network from Install Automatic Mode to Root or Non-Root, the distance setting changes automatically from 99 km to 0 km.

Default Encryption Key 2 Is Set by Bridge

The encryption key in slot 2 is the transmit key by default. If you enable WEP with MIC, use the same WEP key as the transmit key in the same key slot on both root and non-root bridges.

Limitation to PAgP Redundancy on Switches Connected by Bridge Links

When two switches configured for Port Aggregation Protocol (PAgP) are connected by redundant wireless bridge links, the PAgP switchover takes at least 30 seconds, which is too slow to maintain TCP sessions from one port to another.

CLI Command power client n Is Not Supported

The bridge does not support the power client n configuration interface command in the web-browser or CLI interfaces. The bridge does not perform any action when you enter this command.

Default Infrastructure SSID

When VLAN is enabled, the WEP encryption mode and the WEP key are applicable only to a native VLAN. Any SSID configured should have the Infrastructure-SSID parameter enabled for that SSID. With the Infrastructure-SSID parameter enabled, the bridge ensures that a non-native VLAN cannot be assigned to that SSID.

ARP Table Is Corrupted When Multiple BVIs Are Configured

The bridge supports only one bridge virtual interface (BVI). Multiple BVIs should not be configured because the ARP table may become corrupted.

Bridge Power Up LED Colors

During power up the bridge LEDs display the following color sequences:

1. The Install LED is initially turned off.

2. The Install LED turns amber.

3. The Status LED turns amber during the boot loader process.

4. The Ethernet, Status, and Radio LEDs turn green during the loading of the operating system.

5. The Ethernet, Status, and Radio LEDs turn amber during the loop-back test.

6. The Status LED starts to blink green then the Ethernet LED starts to blink green.

7. The Ethernet, Status, and Radio LEDs blink amber twice to indicate that the auto install process has started.

8. During the auto install process, the Ethernet, Status, and Radio LEDs turn off for a short time period then go through a blinking sequence twice. Each LED sequentially blinks at the following rates before becoming continuously amber:

a. Slow blinking rate of 1 blink per second.

b. Medium blinking rate of 2 blinks per second.

c. Fast blinking rate of 4 blinks per second.

9. The Install LED starts to blink amber to indicate that the bridge is searching for a root bridge.

10. When the bridge associates to a root bridge, the Install LED turns amber.

11. When the bridge becomes a root bridge and is waiting for a non-root bridge to associate, the Install LED blinks green.

12. When the root bridge has a non-root bridge associated, the Install LED turns green.

Bridge Cannot Detect Simultaneous Image Downloads

Do not attempt to load software images into the bridge from both a Telnet session and console session simultaneously. The bridge cannot detect that two images are being loaded at the same time. For best results, use the archive download command in the CLI.

Bridge Cannot Detect Invalid Software When Using copy Command

The bridge sometimes cannot detect invalid software images when you load software using the copy command. For best results, use the archive download command in the CLI to load new software.

Telnet Session Sometimes Hangs or Will Not Start During Heavy Traffic

When the bridge is transmitting and receiving heavy traffic, you sometimes cannot start a Telnet session and some existing Telnet sessions freeze or hang. However, this behavior is expected because the bridge gives top priority to data traffic and a lower priority to Telnet traffic.

Caveats

This section lists open caveats in Cisco IOS Release 12.3(4)JA and and resolved caveats in Cisco IOS Release 12/3(4)JA and 12.3(4)JA1.

Open Caveats

These caveats are open in Cisco IOS Release 12.3(4)JA:

CSCsa72936—The results for the show controller d0 command do not include the radio serial number.

Workaround: Enter show interface d0 mem 5fd4 12 in privileged EXEC mode and then do a hexadecimal/ASCII conversion on the 12-byte result. This example shows the command and the command output:

AP# sh int d0 mem 5fd4 12
5FD4: 4F46 3043 3338 4234 4831 004C
 
   

The 12-byte output converts to the ASCII serial number FOC0834B1HL.

Resolved Caveats in Cisco IOS Release 12.3(4)JA1

The following caveat is resolved in Cisco IOS Release 12.3(4)JA1:

CSCei61732

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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20051102-timers.

CSCei76358—Through normal software maintenance processes, Cisco is removing depreciated functionality. These changes have no impact on system operation or feature availability.

Resolved Caveats in Cisco IOS Release 12.3(4)JA

These caveats are resolved in Cisco IOS Release 12.3(4)JA:

CSCed36477—The CLI now warns users that bridges do not support different encryption settings on multiple VLANs.

CSCef60659—A document that describes how the Internet Control Message Protocol (ICMP) could be used to perform a number of Denial of Service (DoS) attacks against the Transmission Control Protocol (TCP) has been made publicly available. This document has been published through the Internet Engineering Task Force (IETF) Internet Draft process, and is entitled "ICMP Attacks Against TCP" (draft-gont-tcpm-icmp-attacks-03.txt).

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" messages

Successful 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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20050412-icmp.

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.cpni.gov.uk/.

CSCsa46541—Non-root bridges no longer reboot after receiving a radio_temp_get request.

CSCsa59600—A document that describes how the Internet Control Message Protocol (ICMP) could be used to perform a number of Denial of Service (DoS) attacks against the Transmission Control Protocol (TCP) has been made publicly available. This document has been published through the Internet Engineering Task Force (IETF) Internet Draft process, and is entitled "ICMP Attacks Against TCP" (draft-gont-tcpm-icmp-attacks-03.txt).

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" messages

Successful 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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20050412-icmp.

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.cpni.gov.uk/.

CSCsa64627—STP now functions properly when the native VLAN is not VLAN 1.

Troubleshooting

For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at http://www.cisco.com/cisco/web/support/index.html. Click Technology Support, choose Wireless from the menu on the left, and click Wireless LAN.

Documentation Updates

The Cisco Aironet 1400 Series Wireless Bridge Mounting Instructions provides detailed instructions for installing and mounting the bridge.

Stacking Bridges Section Changes

The separation distance between the two stacked bridge antennas is a minimum of 6.56 ft (2 m).

Related Documentation

These documents describe the installation and configuration of the bridge:

Quick Start Guide: Cisco Aironet 1400 Series Wireless Bridge

Cisco Aironet 1400 Series Wireless Bridge Software Configuration Guide

Cisco Aironet 1400 Series Wireless Bridge Hardware Installation Guide

Cisco IOS Command Reference for Access Points and Bridges

Cisco Aironet 1400 Series Wireless Bridge Mounting Instructions

Cisco Aironet 1400 Series Wireless Bridge 9-dBi Omnidirectional Antenna

Cisco Aironet 1400 Series Wireless Bridge 10-dBi Sector Antenna

Cisco Aironet 1400 Series Wireless Bridge 28-dBi Dish Antenna

Cisco Aironet 1400 Series Wireless Bridge Roof Mount Assembly Instructions

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What's New in Cisco Product Documentation as an RSS feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service. Cisco currently supports RSS Version 2.0.