Cisco AP541N-A-K9 Instruction Manual

Cisco Small Business Pro
AP 541N Dual-band Single-radio Access Point
OL-20285-01
ADMINISTRATION
GUIDE

Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide i
Contents
Preface 3
Audience 3
Document Conventions 3
Online Help, Supported Browsers, and Limitations 5
Chapter 1: Getting Started 6
Administrator Computer Requirements 7
Administration PC IP Address 8
Connecting the Access Point to a PC 8
Connect the Access Point to an Administration PC 9
Connecting the Access Point to the PC by using a Direct Cable Connection9
Connecting the Access Point to the PC through a Network Connection 10
Launching the Access Point Configuration Utility 11
Display the Configuration Utility By Using the Default IP Address 11
Display the Configuration Utility by Using Cisco Configuration Assistant 2.1 or
higher 14
Display the Configuration Utility by Using Another IP Address 16
Troubleshooting Your Connection 18
Using the Ping Command to Test the Connection 18
Possible Cause of Failure 18
Resetting the Device by using the Reset Button 19
Configuring the Access Point by using the Getting Started Page 20
Access Point Configuration 20
Access Point Management Page 21
Wireless Configuration Page 21
Wireless Client Requirements 21
Verifying the Installation 23
Configuring Security on the Wireless Access Point 24
Chapter 2: Status 26
Device Information 27

Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide ii
Contents
Network Interfaces 28
Wired Settings 29
Wireless Settings 29
Traffic Statistics 29
Associated Clients 32
Link Integrity Monitoring 34
Rogue AP Detection 34
Save or Import a List of Known Access Points 39
Chapter 3: Setup 40
LAN Settings 40
Configuring 802.1X Authentication 43
Enabling the Network Time Protocol 46
Chapter 4: Wireless 52
Modifying Wireless Radio Settings 52
Modifying Virtual Access Point Settings 55
Security (Mode) 63
Client Connection Control 76
Configuring a MAC Filter and Station List on the Access Point 76
Configuring MAC Authentication on the RADIUS Server 79
Modifying Advanced Settings 79
Configuring the Wireless Distribution System 91
WEP on WDS Links 94
WPA/PSK on WDS Links 95
Bandwidth Utilization 96
Configuring Quality of Service (QoS) 97
Chapter 5: SNMP 104
Configuring SNMP on the Access Point 104
Configuring SNMP Views 108

Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide iii
Contents
Configuring SNMP Groups 110
Configuring SNMP Users 113
SNMP Targets 115
Chapter 6: Administration 118
Administrator 118
Access Point Configuration 120
Resetting the Access Point to the Factory Default Configuration 121
Saving the Current Configuration to a Backup File 121
Saving the Current Configuration by using TFTP 121
Saving the Current Configuration by using HTTP 122
Restoring the Configuration from a Previously Saved File 122
Restoring the Current Configuration by using TFTP 122
Restoring the Current Configuration by Using HTTP 123
Rebooting the Access Point 124
Software Upgrade 124
Upgrading the Software by using TFTP 124
Upgrading the Software by Using HTTP 126
Event Logs 127
Configuring Persistent Logging Options 128
Configuring the Log Relay Host for Kernel Messages 130
Enabling or Disabling the Log Relay Host on the Events Page 131
Configuring the Web Server Settings 132
Creating an Administration Access Control List 134
Chapter 7: Clustering Multiple Access Points 136
Managing Access Points in the Cluster 136
Clustering Single and Dual Radio Access Points 137
Viewing and Configuring Cluster Members 137
Removing an Access Point from the Cluster 140
Adding an Access Point to a Cluster 140
Navigating to Configuration Information for a Specific Access Point 141

Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide iv
Contents
Navigating to an Access Point by Using its IP Address in a URL 141
Managing Cluster Sessions 142
Sorting Session Information 144
Configuring and Viewing Channel Management Settings 145
Stopping/Starting Automatic Channel Assignment 146
Viewing Current Channel Assignments and Setting Locks 147
Viewing the Last Proposed Set of Changes 148
Configuring Advanced Settings 149
Viewing Wireless Neighborhood Information 150
Viewing Details for a Cluster Member 154
Chapter 8: Configuration Examples 156
Configuring a VAP 157
VAP Configuration from the Web Interface 158
VAP Configuration Using SNMP 159
Configuring Wireless Radio Settings 160
Wireless Radio Configuration from the Web Interface 160
Wireless Radio Configuration Using SNMP 162
Configuring the Wireless Distribution System 162
WDS Configuration from the Web Interface 163
WDS Configuration Using SNMP 164
Clustering Access Points 165
Clustering APs by Using the Web Interface 165
Clustering Access Points by Using SNMP 167
Appendix A:Default Settings 168
Appendix B:Where to Go From Here 172

Preface
AP541N Dual-band Single-radio Access Point Administration Guide 3
Preface
This guide describes setup, configuration, administration and maintenance for the
Cisco®AP 541N Dual-band Single-radio Access Point on a wireless network.
Audience
This guide is intended for System Administrators that are responsible for
configuring and operating a network by using Cisco software
To obtain the greatest benefit from this guide, you should also have basic
knowledge of Ethernet and wireless networking concepts.
Document Conventions
This section describes the conventions this document uses.
NOTE A note provides more information about a feature or technology and cross-
references to related topics.
!
CAUTION A caution provides information about critical aspects of access point configuration,
combinations of settings, events, or procedures that can adversely affect network
connectivity, security, and so forth.

Preface
AP541N Dual-band Single-radio Access Point Administration Guide 4
Table 1 describes the typographical conventions used in this guide.
Table 1 Typographical Conventions
Symbol Example Description
Bold Click Apply to save
your settings.
Menu titles, page names, and button
names
Blue Text See Document
Conventions, page
3.
Hyperlinked text.
courier font WLAN-AP# show
network
Screen text, file names, commands,
user-typed command-line entries
courier font
italics
value Command parameter, which might be a
variable or fixed value.
<> Angle
brackets
<value> Indicates a parameter is a variable. You
must enter a value in place of the
brackets and text inside them.
[ ] Square
brackets
[value] Indicates an optional fixed parameter.
[< >] Angle
brackets within
square
brackets
[<value>] Indicates an optional variable.
{} curly braces {choice1 |
choice2}
Indicates that you must select a
parameter from the list of choices.
| Vertical bars choice1 |
choice2
Separates the mutually exclusive
choices.
[{}] Braces
within square
brackets
[{choice1 |
choice2}]
Indicate a choice within an optional
element.

Preface
AP541N Dual-band Single-radio Access Point Administration Guide 5
Online Help, Supported Browsers, and Limitations
Online help for the Access Point Configuration Utility pages provides information
about all fields and features available from the Access Point Configuration Utility.
The information in the online help is a subset of the information available in the
AP541N Dual-band Single-radio Access Point Administration Guide.
Online help information corresponds to each page on the Access Point
Configuration Utility.
For information about the settings on the current page, click the Help link on the
right side of a page.

1
Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide 6
Getting Started
The Cisco Access Point provides continuous, high-speed access between
wireless devices and Ethernet devices. It is an advanced, standards-based
solution for wireless networking in businesses of any size. The access point
enables wireless local area network (WLAN) deployment while providing state-of-
the-art wireless networking features.
The access point operates in Standalone Mode. In Standalone Mode, the access
point acts as an individual access point in the network, and you manage it by using
the Access Point Configuration Utility, or SNMP.
This document describes how to perform the setup, management, and
maintenance of the access point in Standalone Mode. Before you power on a new
access point, review the following sections to check required hardware and
software components, client configurations, and compatibility issues. Make sure
you have everything you need for a successful launch and test of your new or
extended wireless network.
This chapter contains the following topics:
•Administrator Computer Requirements
•Connecting the Access Point to a PC
•Troubleshooting Your Connection
•Configuring the Access Point by using the Getting Started Page
•Verifying the Installation
•Configuring Security on the Wireless Access Point
To manage the access point by using the Web interface, the access point needs
an IP address. If you use VLANs or IEEE 802.1X Authentication (port security) on
your network, you might need to configure additional settings on the access point
before it can connect to the network.

Getting Started
Administrator Computer Requirements
7 Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide
1
NOTE The WLAN AP is not designed to function as a gateway to the Internet. To connect
your WLAN to other LANs or the Internet, you need a gateway device.
Administrator Computer Requirements
Table 1 describes the minimum requirements for the personal computer for the
initial configuration and administration of the access point through a Access Point
Configuration Utility.
Table 1 Requirements for Configuration
Required Software
or Component
Description
Ethernet Connection
to the Access Point
The computer used to configure the access point must
be connected to the access point by an Ethernet cable.
The IP address must be on the same subnet as the
access point. The subnet mask must match the subnet
mask of the access point. The Administration PC IP
Address section describes the procedure for changing
these parameters on a PC running Windows.
Web Browser and
Operating System
The following Web browsers can be used to display
the access point Configuration Utility Web pages:
•Microsoft®Internet Explorer®version 6.x or 7.x
(with up-to-date patch level for either major
version) and Mozilla Firefox 3.x on Microsoft
Windows®XP or Microsoft Windows 2000
•Mozilla Firefox 3.x on Redhat®Linux®version 2.4
or later
The Web browser must have JavaScript™ enabled to
support the interactive features of the Configuration
Utility interface.
Security Settings Ensure that security is disabled on the wireless client
used initially to configure the access point. Once the
device has been configured, security can be enabled.