Cisco 15.24JA, 15.22JB, 15.22JA, 12.425dJA User Manual
Cisco IOS Software Configuration Guide
for Cisco Aironet Access Points
Cisco IOS Releases 15.2(4)JA, 15.2(2)JB, 15.2(2)JA,12.4(25d)JA, and
12.3(8)JEE
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Text Part Number: OL-29225-01
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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
© 2013 - 2015 Cisco Systems, Inc. All rights reserved.
Audience i-xix
Purpose i-xix
Organization i-xx
Conventions i-xxi
Related Publications i-xxii
Obtaining Documentation, Obtaining Support, and Security Guidelines i-xxii
Contents
CHAPTER
CHAPTER
1 Overview 1-1
Features 1-2
Features Introduced in This Release 1-2
Support for IPv6 1-2
Support for Guest Access 1-2
Support for 802.11w 1-3
Management Options 1-3
Roaming Client Devices 1-3
Network Configuration Examples 1-3
Root Access Point 1-4
Repeater Access Point 1-4
Bridges 1-5
Workgroup Bridge 1-6
Central Unit in an All-Wireless Network 1-7
2 Using the Web-Browser Interface 2-1
Using the Web-Browser Interface for the First Time 2-2
Using the Management Pages in the Web-Browser Interface 2-2
Using Action Buttons 2-3
Character Restrictions in Entry Fields 2-4
CHAPTER
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Enabling HTTPS for Secure Browsing 2-4
CLI Configuration Example 2-12
Deleting an HTTPS Certificate 2-12
Using Online Help 2-13
Changing the Location of Help Files 2-13
Disabling the Web-Browser Interface 2-14
3 Using the Command-Line Interface 3-1
Cisco IOS Command Modes 3-2
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Getting Help 3-3
Abbreviating Commands 3-3
Using the no and Default Forms of Commands 3-4
Understanding CLI Messages 3-4
Using Command History 3-4
Changing the Command History Buffer Size 3-5
Recalling Commands 3-5
Disabling the Command History Feature 3-5
Using Editing Features 3-6
Enabling and Disabling Editing Features 3-6
Editing Commands Through Keystrokes 3-6
Editing Command Lines that Wrap 3-7
Searching and Filtering Output of show and more Commands 3-8
Accessing the CLI 3-9
Opening the CLI with Telnet 3-9
Opening the CLI with Secure Shell 3-9
CHAPTER
4 Configuring the Access Point for the First Time 4-1
Before You Start 4-2
Resetting the Device to Default Settings 4-2
Resetting to Default Settings Using the MODE Button 4-2
Resetting to Default Settings Using the GUI 4-2
Resetting to Default Settings Using the CLI 4-3
Logging into the Access Point 4-4
Obtaining and Assigning an IP Address 4-4
Default IP Address Behavior 4-5
Connecting to the 1100 Series Access Point Locally 4-5
Connecting to the 1130 Series Access Point Locally 4-6
Connecting to the 1040, 1140,1200, 1230, 1240, 1250, 1260, and 2600 Series Access Points Locally 4-6
Connecting to the 1300 Series Access Point/Bridge Locally 4-7
Default Radio Settings 4-8
Assigning Basic Settings 4-8
Default Settings on the Express Setup Page 4-14
Configuring Basic Security Settings 4-16
Understanding Express Security Settings 4-17
Using VLANs 4-17
Express Security Types 4-18
Express Security Limitations 4-20
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Using the Express Security Page 4-20
CLI Configuration Examples 4-21
Configuring System Power Settings Access Points 4-26
Using the AC Power Adapter 4-26
Using a Switch Capable of IEEE 802.3af Power Negotiation 4-26
Using a Switch That Does Not Support IEEE 802.3af Power Negotiation 4-26
Using a Power Injector 4-27
dot11 extension power native Command 4-27
Support for 802.11n Performance on 1250 Series Access Points with Standard 802.3af PoE 4-27
1250 Series Power Modes 4-27
Assigning an IP Address Using the CLI 4-28
Using a Telnet Session to Access the CLI 4-28
Configuring the 802.1X Supplicant 4-29
Creating a Credentials Profile 4-29
Applying the Credentials to an Interface or SSID 4-30
Applying the Credentials Profile to the Wired Port 4-30
Applying the Credentials Profile to an SSID Used For the Uplink 4-31
Creating and Applying EAP Method Profiles 4-32
Contents
CHAPTER
Configuring IPv6 4-32
Configuring DHCPv6 address 4-33
IPv6 Neighbor Discovery 4-34
Configuring IPv6 Access Lists 4-35
RADIUS Configuration 4-35
IPv6 WDS Support 4-35
CDPv6 Support: 4-36
RA filtering 4-37
5 Administering the Access Point 5-1
Disabling the Mode Button 5-2
Preventing Unauthorized Access to Your Access Point 5-3
Protecting Access to Privileged EXEC Commands 5-3
Default Password and Privilege Level Configuration 5-4
Setting or Changing a Static Enable Password 5-4
Protecting Enable and Enable Secret Passwords with Encryption 5-6
Configuring Username and Password Pairs 5-7
Configuring Multiple Privilege Levels 5-8
Setting the Privilege Level for a Command 5-8
Logging Into and Exiting a Privilege Level 5-9
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Configuring Easy Setup 5-9
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Configuring Spectrum Expert Mode 5-10
Controlling Access Point Access with RADIUS 5-11
Default RADIUS Configuration 5-12
Configuring RADIUS Login Authentication 5-12
Defining AAA Server Groups 5-14
Configuring RADIUS Authorization for User Privileged Access and
Network Services
Displaying the RADIUS Configuration 5-17
Controlling Access Point Access with TACACS+ 5-17
Default TACACS+ Configuration 5-17
Configuring TACACS+ Login Authentication 5-17
Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services 5-19
Displaying the TACACS+ Configuration 5-19
Configuring Ethernet Speed and Duplex Settings 5-20
Configuring the Access Point for Wireless Network Management 5-20
5-16
Configuring the Access Point for Local Authentication and Authorization 5-21
Configuring the Authentication Cache and Profile 5-22
Configuring the Access Point to Provide DHCP Service 5-24
Setting up the DHCP Server 5-24
Monitoring and Maintaining the DHCP Server Access Point 5-26
Show Commands 5-26
Clear Commands 5-26
Debug Command 5-27
Configuring the Access Point for Secure Shell 5-27
Understanding SSH 5-27
Configuring SSH 5-27
Support for Secure Copy Protocol 5-28
Configuring Client ARP Caching 5-28
Understanding Client ARP Caching 5-28
Optional ARP Caching 5-29
Configuring ARP Caching 5-29
Managing the System Time and Date 5-29
Understanding Simple Network Time Protocol 5-30
Configuring SNTP 5-30
Configuring Time and Date Manually 5-30
Setting the System Clock 5-31
Displaying the Time and Date Configuration 5-32
Configuring the Time Zone 5-32
Configuring Summer Time (Daylight Saving Time) 5-33
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Defining HTTP Access 5-35
Configuring a System Name and Prompt 5-35
Default System Name and Prompt Configuration 5-35
Configuring a System Name 5-35
Understanding DNS 5-36
Default DNS Configuration 5-36
Setting Up DNS 5-37
Displaying the DNS Configuration 5-38
Creating a Banner 5-38
Default Banner Configuration 5-38
Configuring a Message-of-the-Day Login Banner 5-38
Configuring a Login Banner 5-40
Upgrading Autonomous Cisco Aironet Access Points to Lightweight Mode 5-40
Migrating to Japan W52 Domain 5-41
Verifying the Migration 5-43
Contents
CHAPTER
Configuring Multiple VLAN and Rate Limiting for Point-to-Multipoint Bridging 5-43
CLI Command 5-44
6 Configuring Radio Settings 6-1
Enabling the Radio Interface 6-2
Configuring the Role in Radio Network 6-2
Universal Workgroup Bridge Mode 6-5
Point-to-point and Multi Point bridging support for 802.11n platforms 6-5
Configuring Dual-Radio Fallback 6-6
Radio Tracking 6-7
Fast Ethernet Tracking 6-7
MAC-Address Tracking 6-7
Bridge Features Not Supported 6-8
Configuring Radio Data Rates 6-8
Access Points Send Multicast and Management Frames at Highest Basic Rate 6-9
Configuring MCS Rates 6-11
Configuring Radio Transmit Power 6-12
Limiting the Power Level for Associated Client Devices 6-15
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Configuring Radio Channel Settings 6-16
Channel Widths for 802..11n 6-17
Dynamic Frequency Selection 6-18
Radar Detection on a DFS Channel 6-19
CLI Commands 6-19
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Confirming that DFS is Enabled 6-20
Configuring a Channel 6-20
Blocking Channels from DFS Selection 6-21
Setting the 802.11n Guard Interval 6-22
Configuring Location-Based Services 6-22
Understanding Location-Based Services 6-22
Configuring LBS on Access Points 6-23
Enabling and Disabling World Mode 6-24
Disabling and Enabling Short Radio Preambles 6-25
Configuring Transmit and Receive Antennas 6-26
Enabling and Disabling Gratuitous Probe Response 6-27
Disabling and Enabling Aironet Extensions 6-28
Configuring the Ethernet Encapsulation Transformation Method 6-29
Enabling and Disabling Reliable Multicast to Workgroup Bridges 6-29
Enabling and Disabling Public Secure Packet Forwarding 6-30
Configuring Protected Ports 6-31
Configuring the Beacon Period and the DTIM 6-32
Configure RTS Threshold and Retries 6-32
Configuring the Maximum Data Retries 6-33
Configuring the Fragmentation Threshold 6-33
Enabling Short Slot Time for 802.11g Radios 6-34
Performing a Carrier Busy Test 6-34
Configuring VoIP Packet Handling 6-34
Viewing VoWLAN Metrics 6-35
Viewing Voice Reports 6-36
Viewing Wireless Client Reports 6-38
Viewing Voice Fault Summary 6-39
Configuring Voice QoS Settings 6-40
Configuring Voice Fault Settings 6-41
Configuring ClientLink 6-42
Using the CLI to Configure ClientLink 6-42
CHAPTER
6
Debugging Radio Functions 6-42
7 Configuring Multiple SSIDs 7-1
Understanding Multiple SSIDs 7-2
Effect of Software Versions on SSIDs 7-2
Configuring Multiple SSIDs 7-4
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Default SSID Configuration 7-4
Creating an SSID Globally 7-4
Viewing SSIDs Configured Globally 7-6
Using Spaces in SSIDs 7-6
Using a RADIUS Server to Restrict SSIDs 7-7
Configuring Multiple Basic SSIDs 7-8
Requirements for Configuring Multiple BSSIDs 7-8
Guidelines for Using Multiple BSSIDs 7-8
Configuring Multiple BSSIDs 7-8
CLI Configuration Example 7-10
Displaying Configured BSSIDs 7-10
Assigning IP Redirection for an SSID 7-11
Guidelines for Using IP Redirection 7-12
Configuring IP Redirection 7-12
Including an SSID in an SSIDL IE 7-13
Contents
CHAPTER
NAC Support for MBSSID 7-14
Configuring NAC for MBSSID 7-16
8 Configuring Spanning Tree Protocol 8-1
Understanding Spanning Tree Protocol 8-2
STP Overview 8-2
1300 and 350 Series Bridge Interoperability 8-3
Access Point/Bridge Protocol Data Units 8-3
Election of the Spanning-Tree Root 8-4
Spanning-Tree Timers 8-5
Creating the Spanning-Tree Topology 8-5
Spanning-Tree Interface States 8-6
Blocking State 8-7
Listening State 8-7
Learning State 8-7
Forwarding State 8-8
Disabled State 8-8
Configuring STP Features 8-8
Default STP Configuration 8-8
Configuring STP Settings 8-9
STP Configuration Examples 8-10
Root Bridge Without VLANs 8-10
Non-Root Bridge Without VLANs 8-11
Root Bridge with VLANs 8-11
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Non-Root Bridge with VLANs 8-13
Displaying Spanning-Tree Status 8-14
CHAPTER
CHAPTER
9 Configuring an Access Point as a Local Authenticator 9-1
Understanding Local Authentication 9-2
Configuring a Local Authenticator 9-2
Guidelines for Local Authenticators 9-3
Configuration Overview 9-3
Configuring the Local Authenticator Access Point 9-3
Configuring Other Access Points to Use the Local Authenticator 9-6
Configuring EAP-FAST Settings 9-7
Configuring PAC Settings 9-7
Configuring an Authority ID 9-8
Configuring Server Keys 9-8
Possible PAC Failures Caused by Access Point Clock 9-8
Limiting the Local Authenticator to One Authentication Type 9-9
Unblocking Locked Usernames 9-9
Viewing Local Authenticator Statistics 9-9
Using Debug Messages 9-10
10 Configuring Cipher Suites and WEP 10-1
CHAPTER
Understanding Cipher Suites and WEP 10-2
Configuring Cipher Suites and WEP 10-3
Creating WEP Keys 10-3
WEP Key Restrictions 10-5
Example WEP Key Setup 10-5
Enabling Cipher Suites and WEP 10-6
Matching Cipher Suites with WPA or CCKM 10-7
Enabling and Disabling Broadcast Key Rotation 10-8
11 Configuring Authentication Types 11-1
Understanding Authentication Types 11-2
Open Authentication to the Access Point 11-2
Shared Key Authentication to the Access Point 11-3
EAP Authentication to the Network 11-4
MAC Address Authentication to the Network 11-5
Combining MAC-Based, EAP, and Open Authentication 11-6
Using CCKM for Authenticated Clients 11-6
Using WPA Key Management 11-7
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Software and Firmware Requirements for WPA, CCKM, CKIP, and WPA-TKIP 11-8
Configuring Authentication Types 11-10
Assigning Authentication Types to an SSID 11-10
Configuring WPA Migration Mode 11-13
Configuring Additional WPA Settings 11-14
Configuring MAC Authentication Caching 11-15
Configuring Authentication Holdoffs, Timeouts, and Intervals 11-16
Creating and Applying EAP Method Profiles for the 802.1X Supplicant 11-17
Creating an EAP Method Profile 11-18
Applying an EAP Profile to the Fast Ethernet Interface 11-18
Applying an EAP Profile to an Uplink SSID 11-19
Matching Access Point and Client Device Authentication Types 11-19
Guest Access Management 11-22
Guest Account Creation 11-24
Contents
CHAPTER
12 Configuring WDS, Fast Secure Roaming, Radio Management, and Wireless Intrusion Detection
Services
12-1
Understanding WDS 12-2
Role of the WDS Device 12-2
Role of Access Points Using the WDS Device 12-3
Understanding Fast Secure Roaming 12-3
Understanding Radio Management 12-5
Understanding Layer 3 Mobility 12-5
Understanding Wireless Intrusion Detection Services 12-6
Configuring WDS 12-7
Guidelines for WDS 12-8
Requirements for WDS 12-8
Configuration Overview 12-8
Configuring Access Points as Potential WDS Devices 12-9
CLI Configuration Example 12-13
Configuring Access Points to use the WDS Device 12-14
CLI Configuration Example 12-15
Configuring the Authentication Server to Support WDS 12-15
Configuring WDS Only Mode 12-19
Viewing WDS Information 12-20
Using Debug Messages 12-21
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Configuring Fast Secure Roaming 12-21
Requirements for Fast Secure Roaming 12-21
Configuring Access Points to Support Fast Secure Roaming 12-22
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CLI Configuration Example 12-24
Support for 802.11r 12-24
Configuring Management Frame Protection 12-25
Management Frame Protection 12-25
Overview 12-26
Protection of Unicast Management Frames 12-26
Protection of Broadcast Management Frames 12-26
Client MFP For Access Points in Root mode 12-26
Configuring Client MFP 12-27
Management Frame Protection with 802.11w 12-28
Configuring Radio Management 12-30
CLI Configuration Example 12-31
Configuring Access Points to Participate in WIDS 12-32
Configuring the Access Point for Scanner Mode 12-32
Configuring the Access Point for Monitor Mode 12-32
Displaying Monitor Mode Statistics 12-33
Configuring Monitor Mode Limits 12-34
Configuring an Authentication Failure Limit 12-34
CHAPTER
13 Configuring RADIUS and TACACS+ Servers 13-1
Configuring and Enabling RADIUS 13-1
Understanding RADIUS 13-2
RADIUS Operation 13-2
Configuring RADIUS 13-3
Default RADIUS Configuration 13-4
Identifying the RADIUS Server Host 13-4
Configuring RADIUS Login Authentication 13-7
Defining AAA Server Groups 13-9
Configuring RADIUS Authorization for User Privileged Access and Network Services 13-11
Configuring Packet of Disconnect 13-12
Starting RADIUS Accounting m 13-13
Selecting the CSID Format 13-14
Configuring Settings for All RADIUS Servers 13-15
Configuring the Access Point to Use Vendor-Specific RADIUS Attributes 13-16
Configuring the Access Point for Vendor-Proprietary RADIUS Server Communication 13-17
Configuring WISPr RADIUS Attributes 13-18
Displaying the RADIUS Configuration 13-19
RADIUS Attributes Sent by the Access Point 13-20
10
Configuring and Enabling TACACS+ 13-23
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Understanding TACACS+ 13-23
TACACS+ Operation 13-24
Configuring TACACS+ 13-24
Default TACACS+ Configuration 13-25
Identifying the TACACS+ Server Host and Setting the Authentication Key 13-25
Configuring TACACS+ Login Authentication 13-26
Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services 13-27
Starting TACACS+ Accounting 13-28
Displaying the TACACS+ Configuration 13-29
Contents
CHAPTER
CHAPTER
14 Configuring VLANs 14-1
Understanding VLANs 14-2
Related Documents 14-3
Incorporating Wireless Devices into VLANs 14-4
Configuring VLANs 14-4
Configuring a VLAN 14-5
Assigning Names to VLANs 14-7
Guidelines for Using VLAN Names 14-7
Creating a VLAN Name 14-8
Using a RADIUS Server to Assign Users to VLANs 14-8
Using a RADIUS Server for Dynamic Mobility Group Assignment 14-9
Viewing VLANs Configured on the Access Point 14-9
VLAN Configuration Example 14-10
15 Configuring QoS 15-1
Understanding QoS for Wireless LANs 15-2
QoS for Wireless LANs Versus QoS on Wired LANs 15-2
Impact of QoS on a Wireless LAN 15-2
Precedence of QoS Settings 15-3
Using Wi-Fi Multimedia Mode 15-4
Using Band Select 15-5
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Configuring QoS 15-6
Configuration Guidelines 15-6
Configuring QoS Using the Web-Browser Interface 15-6
The QoS Policies Advanced Page 15-10
QoS Element for Wireless Phones 15-10
IGMP Snooping 15-11
AVVID Priority Mapping 15-11
WiFi Multimedia (WMM) 15-11
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Rate Limiting 15-11
Adjusting Radio Access Categories 15-12
Configuring Nominal Rates 15-13
Optimized Voice Settings 15-14
Configuring Call Admission Control 15-14
QoS Configuration Examples 15-15
Giving Priority to Voice Traffic 15-15
Giving Priority to Video Traffic 15-16
CHAPTER
CHAPTER
16 Configuring Filters 16-1
Understanding Filters 16-2
Configuring Filters Using the CLI 16-2
Configuring Filters Using the Web-Browser Interface 16-3
Configuring and Enabling MAC Address Filters 16-3
Creating a MAC Address Filter 16-4
Using MAC Address ACLs to Block or Allow Client Association to the Access Point 16-6
Creating a Time-Based ACL 16-8
ACL Logging 16-9
CLI Configuration Example 16-9
Configuring and Enabling IP Filters 16-9
Creating an IP Filter 16-11
Configuring and Enabling EtherType Filters 16-12
Creating an EtherType Filter 16-13
17 Configuring CDP 17-1
Understanding CDP 17-2
Configuring CDP 17-2
Default CDP Configuration 17-2
Configuring the CDP Characteristics 17-2
Disabling and Enabling CDP 17-3
Disabling and Enabling CDP on an Interface 17-4
CHAPTER
12
Monitoring and Maintaining CDP 17-4
18 Configuring SNMP 18-1
Understanding SNMP 18-2
SNMP Versions 18-2
SNMP Manager Functions 18-3
SNMP Agent Functions 18-4
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SNMP Community Strings 18-4
Using SNMP to Access MIB Variables 18-4
Configuring SNMP 18-5
Default SNMP Configuration 18-5
Enabling the SNMP Agent 18-5
Configuring Community Strings 18-6
Specifying SNMP-Server Group Names 18-7
Configuring SNMP-Server Hosts 18-8
Configuring SNMP-Server Users 18-8
Configuring Trap Managers and Enabling Traps 18-8
Setting the Agent Contact and Location Information 18-10
Using the snmp-server view Command 18-10
SNMP Examples 18-10
Displaying SNMP Status 18-12
Contents
CHAPTER
19 Configuring Repeater and Standby Access Points and Workgroup Bridge Mode 19-1
Understanding Repeater Access Points 19-2
Configuring a Repeater Access Point 19-3
Default Configuration 19-4
Guidelines for Repeaters 19-4
Setting Up a Repeater 19-5
Aligning Antennas 19-6
Verifying Repeater Operation 19-7
Setting Up a Repeater As a LEAP Client 19-7
Setting Up a Repeater As a WPA Client 19-8
Understanding Hot Standby 19-9
Configuring a Hot Standby Access Point 19-10
Verifying Standby Operation 19-12
Understanding Workgroup Bridge Mode 19-13
Treating Workgroup Bridges as Infrastructure Devices or as Client Devices 19-15
Configuring a Workgroup Bridge for Roaming 19-16
Configuring a Workgroup Bridge for Limited Channel Scanning 19-16
Configuring the Limited Channel Set 19-16
Ignoring the CCX Neighbor List 19-17
Configuring a Client VLAN 19-17
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Workgroup Bridge VLAN Tagging 19-17
Configuring Workgroup Bridge Mode 19-18
Using Workgroup Bridges in a Lightweight Environment 19-20
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Guidelines for Using Workgroup Bridges in a Lightweight Environment 19-20
Sample Workgroup Bridge Configuration 19-22
Enabling VideoStream Support on Workgroup Bridges 19-23
CHAPTER
20 Managing Firmware and Configurations 20-1
Working with the Flash File System 20-1
Displaying Available File Systems 20-2
Setting the Default File System 20-3
Displaying Information About Files on a File System 20-3
Changing Directories and Displaying the Working Directory 20-3
Creating and Removing Directories 20-4
Copying Files 20-4
Deleting Files 20-5
Creating, Displaying, and Extracting tar Files 20-5
Creating a tar File 20-5
Displaying the Contents of a tar File 20-6
Extracting a tar File 20-7
Displaying the Contents of a File 20-7
Working with Configuration Files 20-7
Guidelines for Creating and Using Configuration Files 20-8
Configuration File Types and Location 20-9
Creating a Configuration File by Using a Text Editor 20-9
Copying Configuration Files by Using TFTP 20-9
Preparing to Download or Upload a Configuration File by Using TFTP 20-10
Downloading the Configuration File by Using TFTP 20-10
Uploading the Configuration File by Using TFTP 20-11
Copying Configuration Files by Using FTP 20-11
Preparing to Download or Upload a Configuration File by Using FTP 20-12
Downloading a Configuration File by Using FTP 20-12
Uploading a Configuration File by Using FTP 20-13
Copying Configuration Files by Using RCP 20-14
Preparing to Download or Upload a Configuration File by Using RCP 20-15
Downloading a Configuration File by Using RCP 20-16
Uploading a Configuration File by Using RCP 20-17
Clearing Configuration Information 20-17
Deleting a Stored Configuration File 20-18
14
Working with Software Images 20-18
Image Location on the Access Point 20-18
tar File Format of Images on a Server or Cisco.com 20-19
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Copying Image Files by Using TFTP 20-19
Preparing to Download or Upload an Image File by Using TFTP 20-19
Downloading an Image File by Using TFTP 20-20
Uploading an Image File by Using TFTP 20-22
Copying Image Files by Using FTP 20-22
Preparing to Download or Upload an Image File by Using FTP 20-23
Downloading an Image File by Using FTP 20-24
Uploading an Image File by Using FTP 20-26
Copying Image Files by Using RCP 20-27
Preparing to Download or Upload an Image File by Using RCP 20-27
Downloading an Image File by Using RCP 20-29
Uploading an Image File by Using RCP 20-31
Reloading the Image Using the Web Browser Interface 20-32
Browser HTTP Interface 20-32
Browser TFTP Interface 20-33
Contents
CHAPTER
CHAPTER
21 Configuring System Message Logging 21-1
Understanding System Message Logging 21-2
Configuring System Message Logging 21-2
System Log Message Format 21-2
Default System Message Logging Configuration 21-3
Disabling and Enabling Message Logging 21-4
Setting the Message Display Destination Device 21-5
Enabling and Disabling Timestamps on Log Messages 21-6
Enabling and Disabling Sequence Numbers in Log Messages 21-6
Defining the Message Severity Level 21-7
Limiting Syslog Messages Sent to the History Table and to SNMP 21-8
Setting a Logging Rate Limit 21-9
Configuring UNIX Syslog Servers 21-10
Logging Messages to a UNIX Syslog Daemon 21-10
Configuring the UNIX System Logging Facility 21-10
Displaying the Logging Configuration 21-12
22 Troubleshooting 22-1
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Checking the Top Panel Indicators 22-2
Indicators on 1130 Series Access Points 22-5
Indicators on 1040 or 1140 Series Access Point 22-8
Indicators on 1240 Series Access Points 22-11
Indicators on 1250 Access Points 22-13
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Indicators on 1260 Series Access Points 22-15
Indicators on 1300 Outdoor Access Point/Bridges 22-17
Normal Mode LED Indications 22-18
Power Injector 22-20
Checking Power 22-21
Low Power Condition 22-21
Checking Basic Settings 22-22
SSID 22-22
WEP Keys 22-22
Security Settings 22-22
Resetting to the Default Configuration 22-23
Using the MODE Button 22-23
Using the Web Browser Interface 22-24
Using the CLI 22-24
APPENDIX
APPENDIX
APPENDIX
Reloading the Access Point Image 22-25
Using the MODE button 22-26
Using the Web Browser Interface 22-26
Browser HTTP Interface 22-27
Browser TFTP Interface 22-27
Using the CLI 22-28
Obtaining the Access Point Image File 22-29
Obtaining TFTP Server Software 22-30
Image Recovery on the 1520 Access Point 22-30
A Protocol Filters A-1
B Supported MIBs B-1
MIB List B-1
Using FTP to Access the MIB Files B-2
C Error and Event Messages C-1
Conventions C-2
16
Software Auto Upgrade Messages C-3
Association Management Messages C-5
Unzip Messages C-6
System Log Messages C-7
802.11 Subsystem Messages C-8
Inter-Access Point Protocol Messages C-21
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LOSSARY
Contents
Local Authenticator Messages C-21
WDS Messages C-24
Mini IOS Messages C-25
Access Point/Bridge Messages C-26
Cisco Discovery Protocol Messages C-26
External Radius Server Error Messages C-26
LWAPP Error Messages C-27
Sensor Messages C-28
SNMP Error Messages C-29
SSH Error Messages C-30
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Contents
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Audience
Preface
This guide is for the networking professional who installs and manages Cisco Aironet Access Points. To
use this guide, you should have experience working with the Cisco IOS software and be familiar with
the concepts and terminology of wireless local area networks.
Note This guide does not cover lightweight access points. Configuration for these devices can be found in the
Purpose
The guide covers Cisco IOS Releases 15.2(4)JA , 12.4(25d)JA, and 12.3(8)JEE.
Cisco IOS Releases 15.2(4)JA supports the following autonomous 32 Mb platforms:
• AP 1040
• AP 801
• AP 802
• AP 1140
• AP 1550
• AP 1600
• AP 2600
• AP 3500
• AP 3600
• AP 1260
appropriate installation and configuration guides on Cisco.com.
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This guide provides the information you need to install and configure your access point. This guide
provides procedures for using the Cisco IOS software commands that have been created or changed for
use with the access point. It does not provide detailed information about these commands. For detailed
information about these commands, refer to the Cisco IOS Command Reference for Cisco Aironet Access
Points and Bridges for this release. For information about the standard Cisco IOS software commands,
refer to the Cisco IOS software documentation set available from the Cisco.com home page at Support
> Documentation.
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Organization
This guide also includes an overview of the access point web-based interface (APWI), which contains
all the functionality of the command-line interface (CLI). This guide does not provide field-level
descriptions of the APWI windows nor does it provide the procedures for configuring the access point
from the APWI. For all APWI window descriptions and procedures, refer to the access point online help,
which is available from the Help buttons on the APWI pages.
Organization
This guide is organized into these chapters:
Chapter 1, “Overview,” lists the software and hardware features of the access point and describes the
access point role in your network.
Chapter 2, “Using the Web-Browser Interface,” describes how to use the web-browser interface to
configure the access point.
Chapter 3, “Using the Command-Line Interface,” describes how to use the command-line interface (CLI)
to configure the access point.
Chapter 4, “Configuring the Access Point for the First Time,”describes how to configure basic settings
on a new access point.
Chapter 5, “Administering the Access Point,” describes how to perform one-time operations to
administer your access point, such as preventing unauthorized access to the access point, setting the
system date and time, and setting the system name and prompt.
Chapter 6, “Configuring Radio Settings,” describes how to configure settings for the access point radio
such as the role in the radio network, transmit power, channel settings, and others.
Chapter 7, “Configuring Multiple SSIDs,” describes how to configure and manage multiple Service Set
Identifiers (SSIDs) and multiple basic SSIDs (BSSIDs) on your access point. You can configure up to
16 SSIDs and up to eight BSSIDs on your access point.
Chapter 8, “Configuring Spanning Tree Protocol,”describes how to configure Spanning Tree Protocol
(STP) on your access point, bridge, or access point operating in a bridge mode. STP prevents bridge
loops from occurring in your network.
Chapter 9, “Configuring an Access Point as a Local Authenticator,” describes how to configure the
access point to act as a local RADIUS server for your wireless LAN. If the WAN connection to your
main RADIUS server fails, the access point acts as a backup server to authenticate wireless devices.
Chapter 10, “Configuring Cipher Suites and WEP,” describes how to configure the cipher suites required
to use authenticated key management, Wired Equivalent Privacy (WEP), and WEP features including
MIC, CMIC, TKIP, CKIP, and broadcast key rotation.
Chapter 11, “Configuring Authentication Types,” describes how to configure authentication types on the
access point. Client devices use these authentication methods to join your network.
Chapter 12, “Configuring WDS, Fast Secure Roaming, Radio Management, and Wireless Intrusion
Detection Services,” describes how to configure the access point to participate in WDS, to allow fast
reassociation of roaming client services, and to participate in radio management.
Chapter 13, “Configuring and Enabling RADIUS,” describes how to enable and configure the RADIUS
and Terminal Access Controller Access Control System Plus (TACACS+), which provide detailed
accounting information and flexible administrative control over authentication and authorization
processes.
Chapter 14, “Configuring VLANs,” describes how to configure your access point to interoperate with
the VLANs set up on your wired LAN.
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Conventions
Chapter 15, “Configuring QoS,” describes how to configure and manage MAC address, IP, and
EtherType filters on the access point using the web-browser interface.
Chapter 16, “Configuring Filters,” describes how to configure and manage MAC address, IP, and
EtherType filters on the access point using the web-browser interface.
Chapter 17, “Configuring CDP,” describes how to configure Cisco Discovery Protocol (CDP) on your
access point. CDP is a device-discovery protocol that runs on all Cisco network equipment.
Chapter 18, “Configuring SNMP,” describes how to configure the Simple Network Management
Protocol (SNMP) on your access point.
Chapter 19, “Configuring Repeater and Standby Access Points and Workgroup Bridge Mode,” describes
how to configure your access point as a hot standby unit or as a repeater unit.
Chapter 20, “Managing Firmware and Configurations,” describes how to manipulate the Flash file
system, how to copy configuration files, and how to archive (upload and download) software images.
Chapter 21, “Configuring System Message Logging,” describes how to configure system message
logging on your access point.
Chapter 22, “Troubleshooting,”provides troubleshooting procedures for basic problems with the access
point.
Appendix A, “Protocol Filters,” lists some of the protocols that you can filter on the access point.
Appendix B, “Supported MIBs,” lists the Simple Network Management Protocol (SNMP) Management
Information Bases (MIBs) that the access point supports for this software release.
Appendix C, “Error and Event Messages,” lists the CLI error and event messages and provides an
explanation and recommended action for each message.
Conventions
This publication uses these conventions to convey instructions and information:
Command descriptions use these conventions:
Interactive examples use these conventions:
• Commands and keywords are in boldface text.
• Arguments for which you supply values are in italic.
• Square brackets ([ ]) mean optional elements.
• Braces ({ }) group required choices, and vertical bars ( | ) separate the alternative elements.
• Braces and vertical bars within square brackets ([{ | }]) mean a required choice within an optional
element.
• Terminal sessions and system displays are in screen font.
• Information you enter is in boldface screen font.
• Nonprinting characters, such as passwords or tabs, are in angle brackets (< >).
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Notes, cautions, and timesavers use these conventions and symbols:
Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in
this manual.
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Related Publications
Caution Means reader be careful. In this situation, you might do something that could result equipment damage
or loss of data.
Tip Means the following will help you solve a problem. The tips information might not be troubleshooting
or even an action, but could be useful information.
Related Publications
These documents provide complete information about the access point:
• Getting Started Guide: Cisco Aironet 1040 Series Access Points
• Getting Started Guide: Cisco Aironet 1260 Series Access Points
• Release Notes for Cisco Aironet Access Points and Bridges for Cisco IOS Release 12.4(24d)JA and
12.3(8)JEE
• Cisco IOS Command Reference for Cisco Aironet Access Points and Bridges
• Quick Start Guide: Cisco Aironet 1100 Series Access Points
• Quick Start Guide: Cisco Aironet 1130AG Series Access Point
• Getting Started Guide: Cisco Aironet 1140 Series Autonomous Access Point
• Quick Start Guide: Cisco Aironet 1200 Series Access Points
• Quick Start Guide: Cisco Aironet 1240 Series Access Point
• Quick Start Guide: Cisco Aironet 1250 Series Access Point
• Quick Start Guide: Cisco Aironet 1300 Series Outdoor Access Point/Bridge
• Cisco Aironet Access Point Hardware Installation Guide
• Installation Instructions for Cisco Aironet Power Injectors
• Cisco 1140 Series Access Point Deployment Guide
• Installation Instructions for Cisco Aironet 1250 Series Access Point Power Injector
• Cisco Aironet 802.11g Radio Upgrade Instructions
• Cisco Aironet 1250 Series Access Point Radio Upgrade Instructions
• Getting Started Guide: Cisco Aironet 2600 Series Access Points
Obtaining Documentation, Obtaining Support, and Security Guidelines
-xxii
For information on obtaining documentation, obtaining support, providing documentation feedback,
security guidelines, and also recommended aliases and general Cisco documents, see the monthly
What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical
documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
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Obtaining Documentation, Obtaining Support, and Security Guidelines
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CHA P T ER
1
Overview
Cisco Aironet Access Points (hereafter called access points) provide a secure, affordable, and
easy-to-use wireless LAN solution that combines mobility and flexibility with the enterprise-class
features required by networking professionals. With a management system based on Cisco IOS software,
Cisco Aironet access points are Wi-Fi certified, 802.11a-compliant, 802.11b-compliant, and
802.11g-compliant wireless LAN transceivers.
Note The 802.11n standard has not been ratified. Therefore, references to 802.11n throughout this document
refer to 802.11n Draft 2.0.
An access point serves as the connection point between wireless and wired networks or as the center
point of a stand-alone wireless network. In large installations, wireless users within the radio range of
an access point can roam throughout a facility while maintaining seamless, uninterrupted access to the
network.
You can configure and monitor the wireless device using the command-line interface (CLI), the
browser-based management system, or Simple Network Management Protocol (SNMP).
Each access point platform contains one, two, or three radios:
• The 1040 series access point has dual-band (2.4 GHz and 5 GHz), integrated 802.11n radios and
integrated antennas.
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• The 1100 series access point uses a single, 802.11b, 2.4-GHz mini-PCI radio that can be upgraded
to an 802.11g, 2.4-GHz radio.
• The 1130 series access point has integrated 802.11g and 802.11a radios and antennas.
• The 1140 series access point has integrated antennas for its pre-802.11n radios operating on the 2.4-
or 5-GHz frequency bands.
• The 1200 series access point can contain two radios: a 2.4-GHz radio in an internal mini-PCI slot
and a 5-GHz radio module in an external, modified cardbus slot. The 1200 series access point
supports one radio of each type, but it does not support two 2.4-GHz or two 5-GHz radios.
• The 1230 series access point is pre-configured to include both an 802.11g and an 802.11a radio. It
has antenna connectors for externally attached antennas for both radios.
• The 1240 series access point uses two externally connected antennas for each band instead of
built-in antennas.
• The 1250 series access point uses three external connected antennas for its pre-802.11n radios
operating on the 2.4- or 5-GHz frequency bands.
• The 1260 series access point uses three external connected antennas for its pre-802.11n radios
operating on the 2.4- or 5-GHz frequency bands.
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Features
Features
Chapter 1 Overview
• The 1300 series outdoor access point/bridge uses an integrated antenna and can be configured to use
external, dual-diversity antennas.
• The 2600 series access point contains dual-band radios (2.4 GHz and 5 GHz) with integrated and
external antenna options. The access points support full inter-operability with leading 802.11n
clients, and support a mixed deployment with other access points and controllers.
• The 3600 series access point contains a third radio slot. The autonomous mode is not supported on
the third radio.
This chapter contains the following sections:
• Features, page 1-2
• Management Options, page 1-3
• Roaming Client Devices, page 1-3
• Network Configuration Examples, page 1-3
This section lists features supported on access points running Cisco IOS software.
Note The proxy Mobile-IP feature is not supported in Cisco IOS Releases 12.3(2)JA and later.
Features Introduced in This Release
This section describes the new features in Cisco IOS Release 15.2(4)JA and contains these topics:
• Support for IPv6, page 1-2
• Support for Guest Access, page 1-2
• Support for 802.11w, page 1-3
Support for IPv6
Cisco IOS Release 15.2(4)JA supports IPv6 protocols. IPv6 is the latest Internet protocol for IPv4. It
uses 128-bit addresses as opposed to the 32-bit addresses that are used in IPv4. Cisco IOS Release
15.2(4)JA supports these unicast addresses:
• Aggregatable Global Address: These addresses are globally routable and reachable on the IPv6
portion of the Internet. Global addresses are identified by the format prefix of 001.
• Link-local address: These addresses are automatically configured on interface using:
–
Link-local prefix FE80::/10 (1111 1110 10)
–
Support for Guest Access
Cisco IOS Release 15.2(4)JA supports guest access to the network. Guest networks provide access to the
Internet and intranet without compromising the security of the host enterprise network.
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Interface identifier in the modified EUI-64 format.
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Chapter 1 Overview
Support for 802.11w
Cisco IOS Release 15.2(4)JA provides support for the 802.11w protocol. Unlike encrypted data traffic,
management frames are sent in an unsecure manner while using the 802.11 protocol for data transfer.
The standard 802.11w protocol ensures that the management frames are secured by applying robust
management frame protection protocols.
Management Options
You can use the wireless device management system through the following interfaces:
• The Cisco IOS command-line interface (CLI), which you use through a console port or Telnet
session. Use the interface dot11radio global configuration command to place the wireless device
into the radio configuration mode. Most of the examples in this manual are taken from the CLI.
Chapter 3, “Using the Command-Line Interface,” provides a detailed description of the CLI.
• A web-browser interface, which you use through a Web browser. Chapter 2, “Using the
Web-Browser Interface,” provides a detailed description of the web-browser interface.
• Simple Network Management Protocol (SNMP). Chapter 18, “Configuring SNMP,” explains how to
configure the wireless device for SNMP management.
Management Options
Roaming Client Devices
If you have more than one wireless device in your wireless LAN, wireless client devices can roam
seamlessly from one wireless device to another. The roaming functionality is based on signal quality, not
proximity. When signal quality drops from a client, it roams to another access point.
Wireless LAN users are sometimes concerned when a client device stays associated to a distant access
point instead of roaming to a closer access point. However, if a client signal to a distant access point
remains strong and the signal quality is high, the client will not roam to a closer access point. Checking
constantly for closer access points would be inefficient, and the extra radio traffic would slow throughput
on the wireless LAN.
Using CCKM and a device providing WDS, client devices can roam from one access point to another so
quickly that there is no perceptible delay in voice or other time-sensitive applications.
Network Configuration Examples
This section describes the role of an access point in common wireless network configurations. The
access point default configuration is as a root unit connected to a wired LAN or as the central unit in an
all-wireless network. Access points can also be configured as repeater access points, bridges, and
workgroup bridges. These roles require specific configurations.
Root Access Point
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An access point connected directly to a wired LAN provides a connection point for wireless users. If
more than one access point is connected to the LAN, users can roam from one area of a facility to another
without losing their connection to the network. As users move out of range of one access point, they
automatically connect to the network (associate) through another access point. The roaming process is
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
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Network Configuration Examples
Access point
Access point
135445
seamless and transparent to the user. Figure 1-1 shows access points acting as root units on a wired LAN.
Figure 1-1 Access Points as Root Units on a Wired LAN
Chapter 1 Overview
Repeater Access Point
An access point can be configured as a stand-alone repeater to extend the range of your infrastructure or
to overcome an obstacle that blocks radio communication. The repeater forwards traffic between
wireless users and the wired LAN by sending packets to either another repeater or to an access point
connected to the wired LAN. The data is sent through the route that provides the best performance for
the client. Figure 1-2 shows an access point acting as a repeater. Consult the “Configuring a Repeater
Access Point” section on page 19-3 for instructions on setting up an access point as a repeater.
Note Non-Cisco client devices might have difficulty communicating with repeater access points.
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