Cisco Aironet 1410 Wireless Bridge

Release Notes for Cisco Aironet 1410 Bridges
for Cisco IOS Release 12.3(4)JA
April 4, 2005
These release notes describe new features and open and resolved caveats for Cisco IOS Release
12.3(4)JA. They also provide important information about the Cisco Aironet 1410 Bridge (hereafter
called bridge).
Contents
These release notes contain the following sections:
•
Introduction, page 2
•
System Requirements, page 2
•
New Features, page 3
•
Installation Notes, page 3
•
Important Notes, page 4
•
Caveats, page 6
•
Troubleshooting, page 7
•
Documentation Updates, page 7
•
Related Documentation, page 7
•
Obtaining Documentation, page 8
•
Documentation Feedback, page 9
•
Cisco Product Security Overview, page 9
•
Obtaining Technical Assistance, page 10
•
Obtaining Additional Publications and Information, page 11
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Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2005 Cisco Systems, Inc. All rights reserved.
Introduction
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)JA 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.
Follow this link to the Cisco Aironet documentation home page:
http://www.cisco.com/univercd/cc/td/doc/product/wireless/index.htm
2.
Follow this path to the product, document, and chapter:
Aironet 1400 Series Wireless LAN Products > Cisco Aironet 1400 Series Bridge > Cisco
Aironet 1400 Series Bridge Software Configuration Guide > Managing Firmware and
Configurations > Working with Software Images
3.
Click this link to browse to the Cisco IOS Software Center on Cisco.com:
http://www.cisco.com/public/sw-center/sw-ios.shtml
Log into Cisco.com to use the Cisco IOS Upgrade Planner.
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New Features
New Features
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.
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Important Notes
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.
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Important Notes
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.
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Caveats
Caveats
This section lists open and resolved caveats in Cisco IOS Release 12.3(4)JA for the bridge.
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
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://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.
•
CSCsa46541—Non-root bridges no longer reboot after receiving a radio_temp_get request.
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Troubleshooting
•
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://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.
•
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/tac. 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
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Obtaining Documentation
•
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
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:
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You can access the Cisco website at this URL:
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Documentation DVD
Cisco documentation and additional literature are available in a Documentation DVD package, which
may have shipped with your product. The Documentation DVD is updated regularly and may be more
current than printed documentation. The Documentation DVD package is available as a single unit.
Registered Cisco.com users (Cisco direct customers) can order a Cisco Documentation DVD (product
number DOC-DOCDVD=) from the Ordering tool or Cisco Marketplace.
Cisco Ordering tool:
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Cisco Marketplace:
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Ordering Documentation
You can find instructions for ordering documentation at this URL:
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Documentation Feedback
You can order Cisco documentation in these ways:
•
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http://www.cisco.com/en/US/partner/ordering/
•
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Attn: Customer Document Ordering
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San Jose, CA 95134-9883
We appreciate your comments.
Cisco Product Security Overview
Cisco provides a free online Security Vulnerability Policy portal at this URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html
From this site, you can perform these tasks:
•
Report security vulnerabilities in Cisco products.
•
Obtain assistance with security incidents that involve Cisco products.
•
Register to receive security information from Cisco.
A current list of security advisories and notices for Cisco products is available at this URL:
http://www.cisco.com/go/psirt
If you prefer to see advisories and notices as they are updated in real time, you can access a Product
Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed from this URL:
http://www.cisco.com/en/US/products/products_psirt_rss_feed.html
Reporting Security Problems in Cisco Products
Cisco is committed to delivering secure products. We test our products internally before we release them,
and we strive to correct all vulnerabilities quickly. If you think that you might have identified a
vulnerability in a Cisco product, contact PSIRT:
•
Emergencies — security-alert@cisco.com
•
Nonemergencies — psirt@cisco.com
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Obtaining Technical Assistance
Tip
We encourage you to use Pretty Good Privacy (PGP) or a compatible product to encrypt any sensitive
information that you send to Cisco. PSIRT can work from encrypted information that is compatible with
PGP versions 2.x through 8.x.
Never use a revoked or an expired encryption key. The correct public key to use in your correspondence
with PSIRT is the one that has the most recent creation date in this public key server list:
http://pgp.mit.edu:11371/pks/lookup?search=psirt%40cisco.com&op=index&exact=on
In an emergency, you can also reach PSIRT by telephone:
•
1 877 228-7302
•
1 408 525-6532
Obtaining Technical Assistance
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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
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resolving technical issues with Cisco products and technologies. The website is available 24 hours a day,
365 days a year, at this URL:
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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
Note
Use the Cisco Product Identification (CPI) tool to locate your product serial number before submitting
a web or phone request for service. You can access the CPI tool from the Cisco Technical Support
Website by clicking the Tools & Resources link under Documentation & Tools. Choose Cisco Product
Identification Tool from the Alphabetical Index drop-down list, or click the Cisco Product
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Search results show an illustration of your product with the serial number label location highlighted.
Locate the serial number label on your product and record the information before placing a service call.
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Obtaining Additional Publications and Information
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
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To open a service request by telephone, use one of the following numbers:
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For a complete list of Cisco TAC contacts, go to this URL:
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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
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•
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Obtaining Additional Publications and Information
•
Cisco Press publishes a wide range of general networking, training and certification titles. Both new
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•
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this URL:
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•
iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies
learn how they can use technology to increase revenue, streamline their business, and expand
services. The publication identifies the challenges facing these companies and the technologies to
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technology investment decisions. You can access iQ Magazine at this URL:
http://www.cisco.com/go/iqmagazine
•
Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering
professionals involved in designing, developing, and operating public and private internets and
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http://www.cisco.com/ipj
•
World-class networking training is available from Cisco. You can view current offerings at
this URL:
http://www.cisco.com/en/US/learning/index.html
This document is to be used in conjunction with the documents listed in the “Related Documentation” section.
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