Cisco Systems AIRCAP2602IAK9 User Manual 2

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

Cisco IOS Releases 15.2(2)JA, 12.4(25d)JA, and 12.3(8)JEE

August 2012

Americas Headquarters

Cisco Systems, Inc. 170 West Tasman Drive

San Jose, CA 95134-1706 USA http://www.cisco.com Tel: [phone]

800 553-NETS (6387) Fax: [phone]

Text Part Number: OL-21881-03

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.

NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE.

IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1005R)

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

Cisco Technical Documentation Style Guide ©1992–2012 Cisco Systems, Inc. All rights reserved.

C O N T E N T S

Audience i-xix

Purpose

i-xx

Organization

i-xx

Conventions

i-xxi

Related Publications

i-xxiv

Obtaining Documentation, Obtaining Support, and Security Guidelines i-xxiv

Overview

C H A P T E R 1

1-1

Features

1-2

Features Introduced in This Release

1-2

Management Options

1-3

Roaming Client Devices

1-4

Network Configuration Examples

1-4

Root Access Point

1-4

Repeater Access Point

1-5

Bridges

1-5

Workgroup Bridge

1-6

Central Unit in an All-Wireless Network 1-7

Using the Web-Browser Interface

C H A P T E R 2

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

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

Using the Command-Line Interface

C H A P T E R 3

3-1

Cisco IOS Command Modes

3-2

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

OL-21881-03

1

Contents

Getting Help 3-3
Abbreviating Commands	3-3
Using 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
					Configuring the Access Point for the First Time
C H A P T E R 4											4-1
					Before You Start	4-1
					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			4-3
					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
				Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	2												OL-21881-03

Contents

	Using the Express Security Page			4-20
	CLI Configuration Examples		4-21
	Configuring System Power Settings for 1040, 1130, 1140, 1240, 1250, and 1260 Series 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 4-27
	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			4-29
	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
	Administering the Access Point
C H A P T E R 5		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
	Controlling Access Point Access with RADIUS		5-9
	Default RADIUS Configuration	5-10
	Configuring RADIUS Login Authentication		5-10
	Defining AAA Server Groups	5-12
	Configuring RADIUS Authorization for User Privileged Access and
	Network Services 5-14
	Displaying the RADIUS Configuration 5-15
	Controlling Access Point Access with TACACS+		5-15
	Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	OL-21881-03					3

Contents

			Default TACACS+ Configuration				5-15
			Configuring TACACS+ Login Authentication							5-15
			Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services 5-17
			Displaying the TACACS+ Configuration						5-17
			Configuring Ethernet Speed and Duplex Settings							5-18
			Configuring the Access Point for Wireless Network Management									5-18
			Configuring the Access Point for Local Authentication and Authorization 5-19
			Configuring the Authentication Cache and Profile							5-20
			Configuring the Access Point to Provide DHCP Service								5-22
			Setting up the DHCP Server			5-22
			Monitoring and Maintaining the DHCP Server Access Point									5-24
			Show Commands		5-24
			Clear Commands		5-25
			Debug Command		5-25
			Configuring the Access Point for Secure Shell						5-25
			Understanding SSH		5-25
			Configuring SSH	5-26
			Configuring Client ARP Caching			5-26
			Understanding Client ARP Caching					5-26
			Optional ARP Caching			5-26
			Configuring ARP Caching			5-27
			Managing the System Time and Date				5-27
			Understanding Simple Network Time Protocol							5-27
			Configuring SNTP	5-28
			Configuring Time and Date Manually					5-28
			Setting the System Clock				5-28
			Displaying the Time and Date Configuration								5-29
			Configuring the Time Zone				5-29
			Configuring Summer Time (Daylight Saving Time) 5-30
			Defining HTTP Access	5-32
			Configuring a System Name and Prompt					5-32
			Default System Name and Prompt Configuration								5-32
			Configuring a System Name			5-32
			Understanding DNS		5-33
			Default DNS Configuration				5-33
			Setting Up DNS		5-34
			Displaying the DNS Configuration						5-35
			Creating a Banner 5-35
			Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	4											OL-21881-03

Contents

		Default Banner Configuration					5-35
		Configuring a Message-of-the-Day Login Banner 5-35
		Configuring a Login Banner				5-37
		Upgrading Autonomous Cisco Aironet Access Points to Lightweight Mode 5-37
		Migrating to Japan W52 Domain				5-37
		Verifying the Migration			5-39
		Configuring Multiple VLAN and Rate Limiting for Point-to-Multipoint Bridging								5-39
		CLI Command	5-40
		Configuring Radio Settings
C H A P T E R 6				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
		Configuring Radio Channel Settings					6-16
		802.11n Channel Widths			6-17
		Dynamic Frequency Selection					6-18
		Radar Detection on a DFS Channel 6-19
		CLI Commands	6-19
		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
					Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	OL-21881-03											5

Contents

					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
					Debugging Radio Functions	6-42
					Configuring Multiple SSIDs
C H A P T E R 7						7-1
					Understanding Multiple SSIDs		7-2
					Effect of Software Versions on SSIDs					7-2
					Configuring Multiple SSIDs	7-4
					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
				Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	6											OL-21881-03

Contents

	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
	NAC Support for MBSSID	7-13
	Configuring NAC for MBSSID 7-16
	Configuring Spanning Tree Protocol
C H A P T E R 8				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			8-5
	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
	Non-Root Bridge with VLANs			8-13
	Displaying Spanning-Tree Status		8-14
	Configuring an Access Point as a Local Authenticator 9-1
C H A P T E R 9
	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
	Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	OL-21881-03			7

Contents

				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
				Configuring Cipher Suites and WEP
C H A P T E R 10						10-1
				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
				Configuring Authentication Types
C H A P T E R 11						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
				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
			Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	8												OL-21881-03

Contents

		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
		Configuring WDS, Fast Secure Roaming, Radio Management, and Wireless Intrusion Detection
C H A P T E R 12
		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
		Configuring Fast Secure Roaming				12-21
		Requirements for Fast Secure Roaming					12-21
		Configuring Access Points to Support Fast Secure Roaming									12-22
		CLI Configuration Example			12-24
		Configuring Management Frame Protection					12-24
		Management Frame Protection			12-24
		Overview 12-25
		Protection of Unicast Management Frames						12-25
		Protection of Broadcast Management Frames						12-25
		Client MFP For Access Points in Root mode						12-25
		Configuring Client MFP		12-26
		Configuring Radio Management			12-27
		CLI Configuration Example			12-28
				Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	OL-21881-03												9

12-30

12-29

12-29

12-29

Contents

Configuring Access Points to Participate in WIDS

Configuring the Access Point for Scanner Mode

Configuring the Access Point for Monitor Mode

Displaying Monitor Mode Statistics

Configuring Monitor Mode Limits 12-31

	Configuring an Authentication Failure Limit						12-31
	Configuring WLSM Failover	12-31
	Resilient Tunnel Recovery		12-31
	Active/Standby WLSM Failover			12-32
	Configuring RADIUS and TACACS+ Servers
C H A P T E R 13					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
	Configuring and Enabling TACACS+		13-23
	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
			Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	10			OL-21881-03

Contents

C H A P T E R 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
		Configuring QoS
C H A P T E R 15			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
		Configuring QoS	15-5
		Configuration Guidelines				15-5
		Configuring QoS Using the Web-Browser Interface								15-5
		The QoS Policies Advanced Page						15-9
		QoS Element for Wireless Phones							15-9
		IGMP Snooping			15-10
		AVVID Priority Mapping					15-10
		WiFi Multimedia (WMM)					15-10
		Adjusting Radio Access Categories						15-10
		Configuring Nominal Rates 15-12
		Optimized Voice Settings					15-12
		Configuring Call Admission Control							15-12
		QoS Configuration Examples				15-14
		Giving Priority to Voice Traffic					15-14
		Giving Priority to Video Traffic					15-15
		Configuring Filters
C H A P T E R 16			16-1
		Understanding Filters		16-2
					Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	OL-21881-03											11

Contents

				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
				Configuring CDP
C H A P T E R 17					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
				Monitoring and Maintaining CDP				17-4
				Configuring SNMP
C H A P T E R 18					18-1
				Understanding SNMP		18-2
				SNMP Versions		18-2
				SNMP Manager Functions				18-3
				SNMP Agent Functions			18-4
				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
			Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	12												OL-21881-03

Contents

		SNMP Examples 18-10
		Displaying SNMP Status		18-12
		Configuring Repeater and Standby Access Points and Workgroup Bridge Mode 19-1
C H A P T E R 19
		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				19-6
		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						19-9
		Verifying Standby Operation				19-12
		Understanding Workgroup Bridge Mode						19-13
		Treating Workgroup Bridges as Infrastructure Devices or as Client Devices 19-14
		Configuring a Workgroup Bridge for Roaming								19-15
		Configuring a Workgroup Bridge for Limited Channel Scanning 19-15
		Configuring the Limited Channel Set							19-15
		Ignoring the CCX Neighbor List						19-16
		Configuring a Client VLAN			19-16
		Workgroup Bridge VLAN Tagging				19-16
		Configuring Workgroup Bridge Mode					19-17
		Using Workgroup Bridges in a Lightweight Environment									19-19
		Guidelines for Using Workgroup Bridges in a Lightweight Environment 19-19
		Sample Workgroup Bridge Configuration								19-21
		Enabling VideoStream Support on Workgroup Bridges									19-21
		Managing Firmware and Configurations
C H A P T E R 20								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
				Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	OL-21881-03												13

Contents

			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
			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
			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
			Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	14												OL-21881-03

Contents

		Browser HTTP Interface			20-32
		Browser TFTP Interface			20-33
		Configuring System Message Logging
C H A P T E R 21						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
		Troubleshooting
C H A P T E R 22			22-1
		Checking the Top Panel Indicators			22-2
		Indicators on 1130 Series Access Points						22-6
		Indicators on 1040 or 1140 Series Access Point							22-9
		Indicators on 1240 Series Access Points						22-12
		Indicators on 1250 Access Points				22-14
		Indicators on 1260 Series Access Points						22-16
		Indicators on 1300 Outdoor Access Point/Bridges							22-18
		Normal Mode LED Indications					22-19
		Power Injector		22-21
		Checking Power	22-22
		Low Power Condition		22-22
		Checking Basic Settings		22-23
		SSID 22-23
		WEP Keys	22-23
		Security Settings		22-23
		Resetting to the Default Configuration				22-24
		Using the MODE Button 22-24
		Using the Web Browser Interface				22-25
				Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
	OL-21881-03										15

Contents

		Using the CLI			22-25
		Reloading the Access Point Image							22-26
		Using the MODE button					22-27
		Using the Web Browser Interface								22-27
		Browser HTTP Interface						22-28
		Browser TFTP Interface						22-28
		Using the CLI			22-29
		Obtaining the Access Point Image File									22-30
		Obtaining TFTP Server Software							22-31
		Image Recovery on the 1520 Access Point									22-31
		Protocol Filters
A P P E N D I X A			A-1
		Supported MIBs
A P P E N D I X	B		B-1
		MIB List B-1
		Using FTP to Access the MIB Files							B-2
		Error and Event Messages
A P P E N D I X	C					C-1
		Conventions	C-2
		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
		Local Authenticator Messages						C-22
		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-27
		LWAPP Error Messages				C-27
		Sensor Messages			C-28
		SNMP Error Messages				C-29
		SSH Error Messages			C-30

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

16	OL-21881-03

Preface

Revised: August 30, 2012

OL-21881-03

Audience

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.

The guide covers Cisco IOS Releases 15.2(2)JA, 12.4(25d)JA, and 12.3(8)JEE.

Cisco IOS Releases 15.2(2)JA and 12.4(25d)JA support the following autonomous 32 Mb platforms:

•1040 series access points

•1130 series access points

•1140 series access points

•1130 series access points

•1240 series access points

•1250 series access points

•1260 series access points

•1300 outdoor access point/bridges

•2600 series access points

Cisco IOS Release 12.3(8)JEE supports the following autonomous 16 Mb platforms:

•520 series access point

•1100 series access point

•1200 series access point

Note This guide does not cover lightweight access points. Configuration for these devices can be found in the appropriate installation and configuration guides on Cisco.com.

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

	OL-21881-03	xix

Preface

Purpose

Purpose

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.

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.

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

	xx	OL-21881-03

Preface

Conventions

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 RADIUS and TACACS+ Servers,” 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.

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:

•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.

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

	OL-21881-03	xxi

Preface

Conventions

Interactive examples use these conventions:

•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 (< >). Notes, cautions, and timesavers use these conventions and symbols:

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.

Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in this manual.

Caution Means reader be careful. In this situation, you might do something that could result equipment damage or loss of data.

Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. (To see translations of the warnings that appear in this publication, refer to the appendix “Translated Safety Warnings.”)

Waarschuwing Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico’s en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen. (Voor vertalingen van de waarschuwingen die in deze publicatie verschijnen, kunt u het aanhangsel “Translated Safety Warnings” (Vertalingen van veiligheidsvoorschriften) raadplegen.)

Varoitus Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. (Tässä julkaisussa esiintyvien varoitusten käännökset löydät liitteestä "Translated Safety Warnings" (käännetyt turvallisuutta koskevat varoitukset).)

Attention Ce symbole d’avertissement indique un danger. Vous vous trouvez dans une situation pouvant entraîner des blessures. Avant d’accéder à cet équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures courantes de prévention des accidents. Pour obtenir les traductions des mises en garde figurant dans cette publication, veuillez consulter l’annexe intitulée « Translated Safety Warnings » (Traduction des avis de sécurité).

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

	xxii	OL-21881-03

Preface

Conventions

Warnung Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. (Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Anhang mit dem Titel “Translated Safety Warnings” (Übersetzung der Warnhinweise).)

Avvertenza Questo simbolo di avvertenza indica un pericolo. Si è in una situazione che può causare infortuni. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nell’appendice, “Translated Safety Warnings” (Traduzione delle avvertenze di sicurezza).

Advarsel Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du være oppmerksom på de faremomentene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. (Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i vedlegget "Translated Safety Warnings" [Oversatte sikkerhetsadvarsler].)

Aviso Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos fisicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes. (Para ver as traduções dos avisos que constam desta publicação, consulte o apêndice “Translated Safety Warnings” - “Traduções dos Avisos de Segurança”).

¡Advertencia! Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los procedimientos estándar de prevención de accidentes. (Para ver traducciones de las advertencias que aparecen en esta publicación, consultar el apéndice titulado “Translated Safety Warnings.”)

Varning! Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanligt förfarande för att förebygga skador. (Se förklaringar av de varningar som förekommer i denna publikation i appendix "Translated Safety Warnings" [Översatta säkerhetsvarningar].)

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

	OL-21881-03	xxiii

Preface

Related Publications

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

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

	xxiv	OL-21881-03

C H A P T E R 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, 802.11g-compliant, and 802.11n-compliant wireless LAN transceivers.

n 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 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 or two radios:

•The 1040 series access point has dual-band (2.4 GHz and 5 GHz), integrated 802.11n radios and integrated antennas.

•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.

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

	OL-21881-03	1-1

Chapter 1 Overview

Features

•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.

This chapter provides information on the following topics:

•Features, page 1-2

•Management Options, page 1-3

•Roaming Client Devices, page 1-4

•Network Configuration Examples, page 1-4

Features

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

Table 1-1 lists the new features and supported platforms in Cisco IOS Release 15.2(2)JA, and Table 1-2 lists new features and supported platforms in Cisco IOS Releases 12.4(24d)JA and 12.3(8)JEEE.

Table 1-1	New Cisco IOS Software Features for Cisco IOS Release 15.2(2)JA
										Cisco
		Cisco	Cisco	Cisco	Cisco	Cisco	Cisco	Cisco		Aironet
									Cisco	1300	Cisco
		Aironet	Aironet	Aironet	Aironet	Aironet	Aironet	Aironet	Aironet	Series	Aironet
		1040	1100	1130	1140	1240	1250	1260	2600	Outdoor	1400
		Series	Series	Series	Series	Series	Series	Series	Series	Access	Series
Feature		Access	Access	Access	Access	Access	Access	Access	Access	Point/	Wireless
		Points	Points	Points	Points	Points	Points	Points	Points	Bridge	Bridge
Support for Cisco									x
Aironet 2600 Series
Access Points
PEAP support for		x	x	x	x	x	x	x	x	x	x
Workgroup Bridges
VideoStream support		x	x	x	x	x	x	x	x	x	x
on workgroup bridges
(when used as a client)
Site-Survey Only		(Supported on 3600 and 3500 series access points and 1550 series outdoor access points.)
Mode for 3600, 3500,
and 1550 Access
Points

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

1-2	OL-21881-03

Chapter 1 Overview

Features

Table 1-2	New Cisco IOS Software Features for Cisco IOS Release 15.2(2)JA
										Cisco
		Cisco	Cisco	Cisco	Cisco	Cisco	Cisco	Cisco		Aironet
									Cisco	1300	Cisco
		Aironet	Aironet	Aironet	Aironet	Aironet	Aironet	Aironet	Aironet	Series	Aironet
		1040	1100	1130	1140	1240	1250	1260	2600	Outdoor	1400
		Series	Series	Series	Series	Series	Series	Series	Series	Access	Series
Feature		Access	Access	Access	Access	Access	Access	Access	Access	Point/	Wireless
		Points	Points	Points	Points	Points	Points	Points	Points	Bridge	Bridge
Support for Cisco		x						x
Aironet 1040 Series
Access Points
Support for Cisco		x						x
Aironet 1260 Series
Access Points
Workgroup Bridge		x	-		-	-	-	x	x	-	-
(WGB) support/enable
WGB radio to keep
connections to client
alive
VLAN Tagging		x	–	x	x	x	x	x	x	–	–
Framed Radius		x	x	x	x	x	x	x	x	x	x
Attribute on APs
WLSE/WLSE Express		x	-		–	-	–	x	x	–	–
support
WGB wireless client		x						x	x
support
Russian regulatory		x						x	x
domain support

Note Cisco IOS Release 12.4(25d)JA supports the Cisco 3201 Wireless Mobile Interface Card (WMIC) in the 3200 Series Mobile Access Router (MAR). It does not support the 3202 and 3205 MAR WMIC modules. Use the c3201-k9w7-tar autonomous image for 3201 WMIC.

Note For information on the above features, see Release Notes for Cisco Aironet Access Points and Bridges on Cisco.com.

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

	OL-21881-03	1-3

Chapter 1 Overview

Management Options

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.

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

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 seamless and transparent to the user. Figure 1-1 shows access points acting as root units on a wired LAN.

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

1-4	OL-21881-03

Chapter 1 Overview

Network Configuration Examples

Figure 1-1 Access Points as Root Units on a Wired LAN

Access point

Access point

135445

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.

Figure 1-2 Access Point as Repeater

Access point

Repeater

135444

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

	OL-21881-03	1-5

Chapter 1 Overview

Network Configuration Examples

Bridges

The 1140, 1200, 1240, and 1250 series access points and the 1300 access point/bridge can be configured as root or non-root bridges. In this role, an access point establishes a wireless link with a non-root bridge. Traffic is passed over the link to the wired LAN. Access points in root and non-root bridge roles can be configured to accept associations from clients. Figure 1-3 shows an access point configured as a root bridge with clients. Figure 1-4 shows two access points configured as a root and non-root bridge, both accepting client associations. Consult the “Configuring the Role in Radio Network” section on page 6-2 for instructions on setting up an access point as a bridge.

When wireless bridges are used in a point-to-multipoint configuration the throughput is reduced depending on the number of non-root bridges that associate with the root bridge. The maximum throughput is about 25 Mbps in a point to point link. The addition of three bridges to form a point-to-multipoint network reduces the throughput to about 12.5 Mbps.

Figure 1-3 Access Point as a Root Bridge with Clients

135447

Root bridge

Non-root bridge

Figure 1-4 Access Points as Root and Non-root Bridges with Clients

135446

Root bridge

Non-root bridge

Workgroup Bridge

You can configure access points as workgroup bridges. In workgroup bridge mode, the unit associates to another access point as a client and provides a network connection for the devices connected to its Ethernet port. For example, if you need to provide wireless connectivity for a group of network printers,

Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

1-6	OL-21881-03