Cisco Aironet 1250 Series, AIR-AP1251AG-A-k9, AIR-LAP1251AG-A-k9, AIR-RM1252G-A-K9, AIR-RM1252A-A-K9 Hardware Installation Manual

Cisco Aironet 1250 Series Access Point
Hardware Installation Guide

November 2007

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Text Part Number: OL-8247-03

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS M ANUAL ARE SUBJECT TO CHA NGE WITHOUT NO TICE. 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 RESPONSI BILITY FOR THEIR APPLICA TION OF ANY PRODUCT S.

THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORT H IN THE INFORMATION PACKET T HAT
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 following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required
to correct the interference at their own expense.

The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-frequency energy. If it is not
installed in accordance with Cisco’s installation instructions, it may cause interference with radio and television reception. This equipment has been tested and found to
comply with the limits for a Class B digital device in accordance with the specifications in part 15 of the FCC rules. These specifications are designed to provide reasonable
protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.

Modifying the equipment without Cisc o’s writ ten author ization m ay resul t in the equi pment no lo nger comp lyi ng with FCC requi rements for Class A or Class B digital
devices. In that event, your right to use the equ ipment may be limit ed by FCC regul ations , and you may be requir ed to correct a ny interference to radio or television
communications at your own expense.

You can determine whether your equipment is causing interference by turning it off. If the interferen ce stops, it was probably caused by the Cisco equipment or one of its
peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the followi ng measures:

• Turn the television or radio antenna unt il the int erference st ops.

• Move the equipment to one side or the other of the televisio n or radi o.

• Move the equipment farther away from the te levision or radio.

• Plug the equipment into an outlet that is on a di fferent cir cuit from the televi sion o r radio. (That is, make certain th e equipment and the te levision or radio are on circuit s
controlled by different circuit breaker s or fuses.)

Modifications to this product no t author ized by Cis co Syst ems, Inc. coul d voi d the FCC appro val and ne gate your authorit y to op erate the pr odu ct.
The Cisco implementation of TCP head er compressi on is an adap tation of a program developed by the Universi ty of Ca lifornia, Berk eley (UCB) as part of UCB ’s public

domain version of the UNIX operatin g system. All rights reserved . Copyri ght © 1981 , Rege nts of the Uni versity of Calif ornia.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THE SE SUPPLIERS ARE PROVIDED “AS IS” WITH

ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAI M ALL WARRANTIE S, EXPRESSED OR
LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NO NINFRINGEM ENT OR ARISING FROM A COURS E 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 DAMAGE S.

IMPLIED, INCLUDING, WI TH OUT

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All other trademarks mentioned in this document or Website 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. (0711R)

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the
document are shown for illustrative pur poses onl y. Any use of act ual IP addr ess es in ill ustr ativ e conten t is uninten tio nal and coincident al

Cisco Aironet 1250 Series Access Point Hardware Installation Guide

© 2007 Cisco Systems, Inc. All rights res erved.

Inc.; and Access Registrar, Aironet, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS,

Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me

CONTENTS

Preface ix

Audience ii-ix
Purpose ii-ix
Organization ii-ix
Conventions ii-x
Related Publications ii-xii
Locating the Product Serial Number ii-xiii
Obtaining Documentation, Obtaining Support, and Security Guidelines ii-xiv

CHAPTER

1 Overview 1-1

Product Terminology 1-1
Autonomous Access Points 1-1

Lightweight Access Points 1-2
Guidelines for Using Cisco Aironet Lightweight Access Points 1-2
Hardware Features 1-3

Radio Module Slots 1-5

Single or Dual-Radio Operation 1-5

Antennas Supported 1-6

LEDs 1-7

Ethernet Port 1-7

Console Port 1-8

Power Sources 1-8

UL 2043 Compliance 1-8

Anti-Theft Features 1-9

Operating Modes 1-5
Spatial Multiplexing 1-5
Maximum Ratio Combining 1-6

Network Examples with Autonomous Access Points 1-10

Root Unit on a Wired LAN 1-10

Repeater Unit that Extends Wireless Range 1-11

Central Unit in an All-Wireless Network 1-12

Bridge Network with Wireless Clients 1-12

Workgroup Bridge Network 1-13

Point-to-Point Bridge Configuration 1-14

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Cisco Aironet 1250 Series Access Point Hardware Installation Guide

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