Cisco AIR-LAP1131G-A-K9 Hardware Installation Guide - Page 62

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Cisco Aironet 1100 Series Access Point Hardware Installation Guide

OL-4309-07

Chapter 5

Troubleshooting Autonomous Access Points

Checking Basic Settings

Checking Basic Settings

Mismatched basic settings are the most common causes of lost connectivity with wireless clients. If the

access point does not communicate with client devices, check the following areas.

Default IP Address Behavior

When you connect an 1100 series access point running Cisco IOS Release 12.3(2)JA or later with a

default configuration to your LAN, the 1100 series access point makes several attempts to get an IP

address from the DHCP server. If it does not receive an address, it assigns itself the IP address 10.0.0.1

for five minutes and does not become a mini-DHCP server. During this five-minute window, you can

browse to the default IP address and configure a static address. If after five minutes the access point is

not reconfigured, it discards the 10.0.0.1 address and reverts to requesting an address from the DHCP

server. If it does not receive an address, it sends requests indefinitely. If you miss the five-minute window

for browsing to the access point at 10.0.0.1, you can power-cycle the access point to repeat the process.

When you connect an 1100 series access point running Cisco IOS Release 12.2(15)JA or earlier with a

default configuration to your LAN, the 1100 series access point makes several attempts to get an IP

address from the DHCP server. If it does not receive an address, it assigns itself the IP address 10.0.0.1

and becomes a mini-DHCP server. In that capacity, the access point provides up to twenty IP addresses

between 10.0.0.11 and 10.0.0.30 to the following devices:

•

An Ethernet-capable PC connected to its Ethernet port

•

Wireless client devices configured to use either no SSID or tsunami as the SSID, and with all

security settings disabled

The mini-DHCP server feature is disabled automatically when you assign a static IP address to the access

point.

Caution

When the access point is connected to your LAN, the access point mini-DHCP server provides an IP

address to any DHCP requests it receives.

Default SSID and Radio Behavior

In Cisco IOS Relese 12.3(2)JA2 and earlier, the access point radio is enabled by default and the default

SSID is

tsunami

.

In Cisco IOS Release 12.3(4)JA and later, the access point radio is disabled by default, and there is no

default SSID. You must create an SSID and enable the radio before the access point will allow wireless

associations from other devices. These changes to the default configuration improve the security of

newly installed access points. Refer to the

Cisco IOS Software Configuration Guide for Cisco Aironet

Access Points

for instructions on configuring the SSID and the

“Enabling the Radio Interfaces” section

on page 5-5

for instructions on enabling the radio interface.

Section	Page
Cisco Aironet 1100 Series Access Point Hardware Installation Guide	1
Contents	3
Preface	7
Audience	7
Purpose	7
Organization	7
Conventions	8
Related Publications	10
Obtaining Documentation	10
Cisco.com	11
Product Documentation DVD	11
Ordering Documentation	11
Documentation Feedback	11
Cisco Product Security Overview	11
Reporting Security Problems in Cisco Products	12
Product Alerts and Field Notices	12
Obtaining Technical Assistance	13
Cisco Support Website	13
Locating the Product Serial Number	14
Submitting a Service Request	15
Definitions of Service Request Severity	15
Obtaining Additional Publications and Information	15
Overview	17
Product Terminology	17
Autonomous Access Points	17
Lightweight Access Points	17
Hardware Features	19
Single Radio Operation	19
Ethernet Port	19
LEDs	20
Power Sources	20
UL 2043 Certification	21
Anti-Theft Features	21
Network Examples with Autonomous Access Points	21
Root Unit on a Wired LAN	22
Repeater Unit that Extends Wireless Range	23
Central Unit in an All-Wireless Network	24
Workgroup Bridge Configuration	24
Network Example with Lightweight Access Points	25
Installing the Access Point	27
Safety Information	28
FCC Safety Compliance Statement	28
General Safety Guidelines	28
Warnings	28
Unpacking the Access Point	29
Package Contents	29
Basic Installation Guidelines	29
Access Point Layout and Connectors	30
LEDs	30
Controller Discovery Process for Lightweight Access Points	31
Deploying the Access Points on the Wireless Network	31
Connecting the Ethernet and Power Cables	33
Connecting to an Ethernet Network with an Inline Power Source	34
Connecting to an Ethernet Network with Local Power	34
Powering Up the Access Point	35
Mounting Instructions	37
Overview	38
Mounting on a Horizontal or Vertical Surface	39
Mounting on a Suspended Ceiling	40
Mounting Above a Suspended Ceiling	42
Using the Security Hasp Adapter	43
Mounting on a Cubical Wall Partition	44
Using the Desktop Holster	45
Using the Cable Lock Feature	47
2.4-GHz Radio Upgrade for Autonomous Access Points	49
Upgrade Overview	50
Unpacking the Radio	50
Removing the Back Cover	51
Removing a 2.4-GHz Radio	52
Installing a 2.4-GHz Radio	53
Replacing the Back Cover	56
Finding the Software Version	57
Troubleshooting Autonomous Access Points	59
Checking the Autonomous Access Point LEDs	60
Checking Basic Settings	62
Default IP Address Behavior	62
Default SSID and Radio Behavior	62
Enabling the Radio Interfaces	63
SSID	63
WEP Keys	63
Security Settings	63
Running the Carrier Busy Test	64
Running the Ping or Link Test	65
Resetting to the Default Configuration	65
Using the MODE Button	66
Using the Web Browser Interface	66
Reloading the Access Point Image	67
Using the MODE button	67
Web Browser Interface	68
Browser HTTP Interface	68
Browser TFTP Interface	68
Obtaining the Access Point Image File	69
Obtaining the TFTP Server Software	69
Troubleshooting Lightweight Access Points	71
Guidelines for Using 1100 Series Lightweight Access Points	72
Using DHCP Option 43	72
Checking the Lightweight Access Point LEDs	73
Returning the Access Point to Autonomous Mode	75
Using a Controller to Return the Access Point to Autonomous Mode	75
Using the MODE Button to Return the Access Point to Autonomous Mode	75
MODE Button Setting	76
Obtaining the Autonomous Access Point Image File	76
Obtaining the TFTP Server Software	77
Translated Safety Warnings	79
Declarations of Conformity and Regulatory Information	81
Manufacturers Federal Communication Commission Declaration of Conformity Statement	82
VCCI Statement for Japan	83
Industry Canada	83
Canadian Compliance Statement	84
Declaration of Conformity with Regard to the R&TTE Directive 1999/5/EC	84
Declaration of Conformity for RF Exposure	86
Guidelines for Operating Cisco Aironet Access Points and Bridges in Japan	86
Japanese Translation	86
English Translation	87
Administrative Rules for Cisco Aironet Access Points in Taiwan	87
All Access Points	87
Chinese Translation	87
English Translation	88
Operation of Cisco Aironet Access Points in Brazil	88
Access Point Models	88
Regulatory Information	88
Portuguese Translation	89
English Translation	89
Declaration of Conformity Statements	89
Declaration of Conformity Statements for European Union Countries	89
Access Point Specifications	95
Channels and Maximum Power Levels	99
Priming Lightweight Access Points Prior to Deployment	101
Configuring DHCP Option 43 for Lightweight Access Points	104
Overview	105
Configuring Option 43 for 1000 Series Access Points	106
Configuring Option 43 for 1100, 1130, 1200, 1240, and 1300 Series Access Points	107
Glossary	109

Cisco AIR-LAP1131G-A-K9 Hardware Installation Guide - Page 62

Checking Basic Settings, Default IP Address Behavior

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