Smc 2891W-AG, 2890W-AG User Manual

USER GUIDE

SMC2890W-AG /

SMC2891W-AG

Elite Connect™

802.11a/g Outdoor Enterprise Access Point

EliteConnect™ SMC2890W-AG and
SMC2891W-AG Universal 2.4GHz/
5GHz Wireless Dual-Band Outdoor
Access Point

The easy way to make all your network connections

20 Mason,
Irvine, CA 92618
Phone: [phone]

February 2007
Revision Number: R01
F1.0.0.1

Copyright

Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable.
However, no responsibility is assumed by SMC for its use, nor for any infringements of patents
or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of SMC. SMC reserves the right to
change specifications at any time without notice.

Copyright © 2005 by

SMC Networks, Inc.

20 Mason

Irvine, CA 92618

All rights reserved.

Trademarks:

SMC is a registered trademark; and EliteConnect is a trademark of SMC Networks, Inc. Other
product and company names are trademarks or registered trademarks of their respective
holders.

Compliances

Federal Communication Commission Interference Statement

This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected

• Consult the dealer or an experienced radio/TV technician for help

FCC Caution: Any changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate this equipment. This
device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired
operation.

IMPORTANT NOTE: FCC Radiation Exposure Statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with a minimum distance
of 20 centimeters (8 inches) between the radiator and your body. This transmitter must
not be co-located or operating in conjunction with any other antenna or transmitter.

Wireless 5 GHz Band Statement:

As the access point can operate in the 5150-5250 MHz frequency band it is limited by the
FCC, Industry Canada and some other countries to indoor use only so as to reduce the
potential for harmful interference to co-channel Mobile Satellite systems.

High power radars are allocated as primary users (meaning they have priority) of the
5250-5350 MHz and 5650-5850 MHz bands. These radars could cause interference and/
or damage to the access point.

i

VCCI Notice

This is a class A product based on the standard of the Voluntary Control Council for
Interference by Information Technology Equipment (VCCI). If this equipment is used in a
domestic environment, radio disturbance may arise. When such trouble occurs, the user
may be required to take corrective actions.

EC Conformance Declaration

Marking by the above symbol indicates compliance with the Essential Requirements of
the R&TTE Directive of the European Union (1999/5/EC). This equipment meets the
following conformance standards:

• EN 60950 (IEC 60950) - Product Safety

• EN 301 893 - Technical requirements for 5 GHz radio equipment

• EN 300 328 - Technical requirements for 2.4 GHz radio equipment

• EN 301 489-1 / EN 301 489-17 - EMC requirements for radio equipment

Countries of Operation & Conditions of Use in the European
Community

This device is intended to be operated in all countries of the European Community.
Requirements for indoor vs. outdoor operation, license requirements and allowed
channels of operation apply in some countries as described below:

Note:

The user must use the configuration utility provided with this product to ensure the
channels of operation are in conformance with the spectrum usage rules for
European Community countries as described below.

• This device requires that the user or installer properly enter the current country of
operation in the command line interface as described in the user guide, before operating
this device.

• This device will automatically limit the allowable channels determined by the current
country of operation. Incorrectly entering the country of operation may result in illegal
operation and may cause harmful interference to other system. The user is obligated to
ensure the device is operating according to the channel limitations, indoor/outdoor
restrictions and license requirements for each European Community country as
described in this document.

ii

• This device employs a radar detection feature required for European Community

operation in the 5 GHz band. This feature is automatically enabled when the country of
operation is correctly configured for any European Community country. The presence of
nearby radar operation may result in temporary interruption of operation of this device.
The radar detection feature will automatically restart operation on a channel free of
radar.

• The 5 GHz Turbo Mode feature is not allowed for operation in any European Community

country. The current setting for this feature is found in the 5 GHz 802.11a Radio Settings
Window as described in the user guide.

• The 5 GHz radio's Auto Channel Select setting described in the user guide must always

remain enabled to ensure that automatic 5 GHz channel selection complies with
European requirements. The current setting for this feature is found in the 5 GHz

802.11a Radio Settings Window as described in the user guide.

• This device may be operated indoors or outdoors in all countries of the European

Community using the 2.4 GHz band: Channels 1 - 13, except where noted below.

- In Italy the end-user must apply for a license from the national spectrum authority to
operate this device outdoors.

- In Belgium outdoor operation is only permitted using the 2.46 - 2.4835 GHz band:
Channel 13.

- In France outdoor operation is only permitted using the 2.4 - 2.454 GHz band:
Channels 1 - 7

Operation Using 5 GHz Channels in the European Community

The user/installer must use the provided configuration utility to check the current channel
of operation and make necessary configuration changes to ensure operation occurs in
conformance with European National spectrum usage laws as described below and
elsewhere in this document.

Allowed 5GHz Channels in Each European Community Country
Allowed Frequency Bands Allowed Channel Numbers Countries

5.15 - 5.25 GHz* 36, 40, 44, 48 Austria, Belgium

5.15 - 5.35 GHz* 36, 40, 44, 48, 52, 56, 60, 64 France, Switzerland,
Liechtenstein

5.15 - 5.35* & 5.470 - 5.725

GHz

36, 40, 44, 48, 52, 56, 60, 64,
100, 104, 108, 112, 116, 120,
124, 128, 132, 136, 140

Denmark, Finland,
Germany, Iceland,
Ireland, Italy,
Luxembourg,
Netherlands, Norway,
Portugal, Spain,
Sweden, U.K.

iii

Allowed 5GHz Channels in Each European Community Country
Allowed Frequency Bands Allowed Channel Numbers Countries

5 GHz Operation Not Allowed None Greece
* Outdoor operation is not allowed using 5.15-5.35 GHz bands (Channels 36 - 64).

Channels 36 - 64 are currently not available for use.

Safety Compliance

Power Cord Safety

Please read the following safety information carefully before installing the device:

Warning:

• The unit must be connected to an earthed (grounded) outlet to comply with international

• Do not connect the unit to an A.C. outlet (power supply) without an earth (ground)

• The appliance coupler (the connector to the unit and not the wall plug) must have a

• The socket outlet must be near to the unit and easily accessible. You can only remove

• This unit operates under SELV (Safety Extra Low Voltage) conditions according to IEC

France and Peru only

This unit cannot be powered from IT
must be powered by 230 V (2P+T) via an isolation transformer ratio 1:1, with the
secondary connection point labelled Neutral, connected directly to earth (ground).

†

Impédance à la terre

Important! Before making connections, make sure you have the correct cord set. Check
it (read the label on the cable) against the following:

Installation and removal of the unit must be carried out by qualified personnel
only.

safety standards.

connection.

configuration for mating with an EN 60320/IEC 320 appliance inlet.

power from the unit by disconnecting the power cord from the outlet.

60950. The conditions are only maintained if the equipment to which it is connected also
operates under SELV conditions.

†

supplies. If your supplies are of IT type, this unit

iv

Power Cord Set

U.S.A. and
Canada

Denmark The supply plug must comply with Section 107-2-D1, Standard

Switzerland The supply plug must comply with SEV/ASE 1011.
U.K. The supply plug must comply with BS1363 (3-pin 13 A) and be

Europe The supply plug must comply with CEE7/7 (“SCHUKO”).

Veuillez lire à fond l'information de la sécurité suivante avant d'installer l’appareil:
AVERTISSEMENT: L’installation et la dépose de ce groupe doivent être confiés à un

personnel qualifié.

• Ne branchez pas votre appareil sur une prise secteur (alimentation électrique) lorsqu'il
n'y a pas de connexion de mise à la terre (mise à la masse).

• Vous devez raccorder ce groupe à une sortie mise à la terre (mise à la masse) afin de
respecter les normes internationales de sécurité.

• Le coupleur d’appareil (le connecteur du groupe et non pas la prise murale) doit
respecter une configuration qui permet un branchement sur une entrée d’appareil EN
60320/IEC 320.

• La prise secteur doit se trouver à proximité de l’appareil et son accès doit être facile.
Vous ne pouvez mettre l’appareil hors circuit qu’en débranchant son cordon électrique
au niveau de cette prise.

The cord set must be UL-approved and CSA certified.
The minimum specifications for the flexible cord are:

- No. 18 AWG - not longer than 2 meters, or 16 AWG.

- Type SV or SJ

- 3-conductor
The cord set must have a rated current capacity of at least 10 A
The attachment plug must be an earth-grounding type with

NEMA 5-15P (15 A, 125 V) or NEMA 6-15P (15 A, 250 V)
configuration.

DK2-1a or DK2-5a.

fitted with a 5 A fuse which complies with BS1362.
The mains cord must be <HAR> or <BASEC> marked and be of

type HO3VVF3GO.75 (minimum).

The mains cord must be <HAR> or <BASEC> marked and be of
type HO3VVF3GO.75 (minimum).

IEC-320 receptacle.

v

• L’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à
la norme IEC 60950. Ces conditions ne sont maintenues que si l’équipement auquel il
est raccordé fonctionne dans les mêmes conditions.

France et Pérou uniquement:

Ce groupe ne peut pas être alimenté par un dispositif à impédance à la terre. Si vos
alimentations sont du type impédance à la terre, ce groupe doit être alimenté par une
tension de 230 V (2 P+T) par le biais d’un transformateur d’isolement à rapport 1:1, avec
un point secondaire de connexion portant l’appellation Neutre et avec raccordement
direct à la terre (masse).

Cordon électrique - Il doit être agréé dans le pays d’utilisation

Etats-Unis et
Canada:

Danemark: La prise mâle d’alimentation doit respecter la section 107-2 D1

Suisse: La prise mâle d’alimentation doit respecter la norme SEV/ASE

Europe La prise secteur doit être conforme aux normes CEE 7/7

Le cordon doit avoir reçu l’homologation des UL et un certificat
de la CSA.

Les spécifications minimales pour un cable flexible sont AWG
No. 18, ouAWG No. 16 pour un cable de longueur inférieure à 2
mètres.

- type SV ou SJ

- 3 conducteurs
Le cordon doit être en mesure d’acheminer un courant nominal

d’au moins 10 A.
La prise femelle de branchement doit être du type à mise à la

terre (mise à la masse) et respecter la configuration NEMA
5-15P (15 A, 125 V) ou NEMA 6-15P (15 A, 250 V).

de la norme DK2 1a ou DK2 5a.

1011.

(“SCHUKO”)
LE cordon secteur doit porter la mention <HAR> ou <BASEC> et

doit être de type HO3VVF3GO.75 (minimum).

vi

Bitte unbedingt vor dem Einbauen des Geräts di e folgenden
Sicherheitsanweisungen durchlesen

WARNUNG: Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal

erfolgen.

• Das Gerät sollte nicht an eine ungeerdete Wechselstromsteckdose angeschlossen

werden.

• Das Gerät muß an eine geerdete Steckdose angeschlossen werden, welche die

internationalen Sicherheitsnormen erfüllt.

• Der Gerätestecker (der Anschluß an das Gerät, nicht der Wandsteckdosenstecker) muß

einen gemäß EN 60320/IEC 320 konfigurierten Geräteeingang haben.

• Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich sein. Die

Stromversorgung des Geräts kann nur durch Herausziehen des Gerätenetzkabels aus
der Netzsteckdose unterbrochen werden.

• Der Betrieb dieses Geräts erfolgt unter den SELV-Bedingungen

(Sicherheitskleinstspannung) gemäß IEC 60950. Diese Bedingungen sind nur gegeben,
wenn auch die an das Gerät angeschlossenen Geräte unter SELV-Bedingungen
betrieben werden.

(Germany):

vii

Stromkabel. Dies muss von dem Land, in dem es benutzt wird geprüft werden:

U.S.A und Canada Der Cord muß das UL gepruft und war das CSA beglaubigt.

Das Minimum spezifikation fur der Cord sind:

- Nu. 18 AWG - nicht mehr als 2 meter, oder 16 AWG.

- Der typ SV oder SJ

- 3-Leiter
Der Cord muß haben eine strombelastbarkeit aus wenigstens

10 A
Dieser Stromstecker muß hat einer erdschluss mit der typ

NEMA 5-15P (15A, 125V) oder NEMA 6-15P (15A, 250V)
konfiguration.

Danemark Dieser Stromstecker muß die ebene 107-2-D1, der standard

Schweiz Dieser Stromstecker muß die SEV/ASE 1011Bestimmungen

Europe Das Netzkabel muß vom Typ HO3VVF3GO.75

DK2-1a oder DK2-5a Bestimmungen einhalten.

einhalten.

(Mindestanforderung) sein und die Aufschrift <HAR> oder
<BASEC> tragen.

Der Netzstecker muß die Norm CEE 7/7 erfüllen (”SCHUKO”).

viii

Table of Contents

Chapter 1: Introduction 1-1

Radio Charac teristics 1-1
Package Checklist 1-2
Hardware Description 1-2
LED Indicat ors 1-3
Integrated High-Gain Antenna 1-5
External Antenna Options 1-5
Ethernet Port 1-6
Power Injector Module 1-6
Grounding Po int 1-7
Water Tight Test Point 1-7
Wall- and Pole-Mounting Bracket Kit 1-7
System Configuration 1-8
Features and Benefits 1-8

Chapter 2: Network Configuration 2-1

Access Point Topologi es 2-1

Infrastructure Wireless LAN 2-2
Infrastructure Wireless LAN for Roaming Wireless PCs 2-3

Bridge Link Topologies 2-4

Point-to-Point Configuration 2-4
Point-to-Multipoint Configuration 2-5

Chapter 3: Bridge Link Planning 3-1

Data Rates 3-1
Radio Path Planning 3-1

Antenna Height 3-2
Antenna Position and Orientation 3-4
Radio Interference 3-5

Weather Conditions 3-5
Ethernet C abling 3-5
Grounding 3-6

Chapter 4: Hardware Installati on 4-1

Testing Basic Link Operation 4-1
Mount the Unit 4-1

ix

Contents

Mounting to a Wall 4-4
Connect External Antennas 4-5
Connect Cables to the Unit 4-6
Connect the Power Injector 4-7
Align Antennas 4-8

Chapter 5: Initial Configuration 5-1

Initial Setup through the CLI 5-1

Required Connections 5-1
Initial Configuration Steps 5-2

Logging In 5-3

Chapter 6: System Configuration 6-1

Advanced Configuratio n 6-2

System Identification 6-3
TCP / IP Settings 6-5
RADIUS 6-7
SSH Settings 6-11
Authentication 6-12
Filter Control 6-17
VLAN 6-19
WDS Settings 6-21
AP Management 6-27
Administration 6-28
System Log 6-33
RSSI 6-37

SNMP 6-40

Configuring SNMP and Trap Message Parameters 6-41
Configuring SNMPv3 Users 6-46
Configuring SNMPv3 Trap Filters 6-48
Configuring SNMPv3 Targets 6-50

Radio Interface 6-51

Radio Settings A (802.11a) 6-53
Radio Settings G (802.11g) 6-68
Security 6-70

Status Information 6-88

Access Point Status 6-88
Station Status 6-91
Event Logs 6-93
STP Status 6-95

x

Contents

Chapter 7: Command Line Interface 7-1

Using the Command Line Interface 7-1

Accessing the CLI 7-1

Console Connection 7-1

Telnet Connection 7-1
Entering Commands 7-2

Keywords and Arguments 7-2

Minimum Abbreviation 7-2

Command Completion 7-3

Getting Help on Commands 7-3

Partial Keyword Lookup 7-4

Negating the Effect of Commands 7-4

Using Command History 7-4

Understanding Command Modes 7-4

Exec Commands 7-5

Configuration Commands 7-5

Command Line Processing 7-6
Command Groups 7-6
General Commands 7-7

configure 7-8

end 7-8

exit 7-8

ping 7-9

reset 7-10

show history 7-10

show line 7-11
System Management Commands 7-11

country 7-12

prompt 7-14

system name 7-14

username 7-15

password 7-15

ip ssh-server enable 7-16

ip ssh-server port 7-16

ip telnet-server enable 7-17

ip http port 7-17

ip http server 7-18

ip http session-timeout 7-18

ip https port 7-19

ip https server 7-19

web-redirect 7-20

APmgmtIP 7-21

APmgmtUI 7-22

show apmanagement 7-22

xi

Contents

show system 7-24
show version 7-25
show config 7-25
show hardware 7-29

System Logging Commands 7-29

logging on 7-30
logging host 7-30
logging console 7-31
logging level 7-31
logging facility-type 7-32
logging clear 7-33
show logging 7-33
show event-log 7-34

System Clock Commands 7-34

sntp-server ip 7-35
sntp-server enable 7-35
sntp-server date-time 7-36
sntp-server daylight-saving 7-37
sntp-server timezone 7-37
show sntp 7-38

DHCP Relay Commands 7-39

dhcp-relay enable 7-39
dhcp-relay 7-40
show dhcp-relay 7-40

SNMP Commands 7-41

snmp-server community 7-42
snmp-server contact 7-42
snmp-server location 7-43
snmp-server enable server 7-43
snmp-server host 7-44
snmp-server trap 7-45
snmp-server engine-id 7-46
snmp-server user 7-47
snmp-server targets 7-49
snmp-server filter 7-50
snmp-server filter-assignments 7-51
show snmp groups 7-51
show snmp users 7-52
show snmp group-assignments 7-52
show snmp target 7-53
show snmp filter 7-53
show snmp filter-assignments 7-54
show snmp 7-55

Flash/File Commands 7-56

bootfile 7-56

xii

Contents

copy 7-57

delete 7-58

dir 7-59

show bootfile 7-59
RADIUS Client 7-60

radius-server address 7-60

radius-server port 7-61

radius-server key 7-61

radius-server retransmit 7-62

radius-server timeout 7-62

radius-server port-accounting 7-63

radius-server timeout-interim 7-63

radius-server radius-mac-format 7-64

radius-server vlan-format 7-64

show radius 7-65

802.1X Authentication 7-66

802.1x 7-66

802.1x broadcast-key-refresh-rate 7-67

802.1x session-key-refresh-rate 7-68

802.1x session-timeout 7-68

802.1x-supplicant enable 7-69

802.1x-supplicant user 7-69

show authentication 7-70
MAC Address Authentication 7-71

address filter default 7-71

address filter entry 7-72

address filter delete 7-72

mac-authentication server 7-73

mac-authentication session-timeout 7-73
Filtering Commands 7-74

filter local-bridge 7-75

filter ap-manage 7-75

filter uplink enable 7-76

filter uplink 7-76

filter ethernet-type enable 7-76

filter ethernet-type protocol 7-77

show filters 7-78
WDS Bridge Commands 7-78

bridge mode 7-79

bridge role (WDS) 7-79

bridge channel-auto-sync 7-80

bridge-link parent 7-80

bridge-link child 7-81

bridge dynamic-entry age-time 7-82

show bridge aging-time 7-82

xiii

Contents

show bridge filter-entry 7-83
show bridge link 7-83

Spanning Tree Commands 7-85

bridge stp enable 7-85
bridge stp forwarding-delay 7-86
bridge stp hello-time 7-86
bridge stp max-age 7-87
bridge stp priority 7-87
bridge-link path-cost 7-88
bridge-link port-priority 7-88
show bridge stp 7-89

Ethernet Interface Commands 7-90

interface ethernet 7-90
dns server 7-91
ip address 7-91
ip dhcp 7-92
speed-duplex 7-93
shutdown 7-94
show interface ethernet 7-94

Wireless Interface Command s 7-95

interface wireless 7-97
vap 7-97
speed 7-98
turbo 7-98
multicast-data-rate 7-99
channel 7-100
transmit-power 7-100
radio-mode 7-101
preamble 7-102
antenna control 7-103
antenna id 7-103
antenna location 7-104
beacon-interval 7-105
dtim-period 7-105
fragmentation-length 7-106
rts-threshold 7-107
super-a 7-108
super-g 7-108
description 7-109
ssid 7-109
closed-system 7-110
max-association 7-110
assoc-timeout-interval 7-111
auth-timeout-value 7-111
shutdown 7-111

xiv

Contents

show interface wireless 7-113

show station 7-115
Rogue AP Detection Commands 7-116

rogue-ap enable 7-116

rogue-ap authenticate 7-117

rogue-ap duration 7-118

rogue-ap interval 7-118

rogue-ap scan 7-119

show rogue-ap 7-120
Wireless Security Command s 7-120

auth 7-121

encryption 7-123

key 7-124

transmit-key 7-125

cipher-suite 7-126

mic_mode 7-127

wpa-pre-shared-key 7-128

pmksa-lifetime 7-128

pre-authentication 7-129
Link Integrity Commands 7-130

link-integrity ping-detect 7-131

link-integrity ping-host 7-131

link-integrity ping-interval 7-132

link-integrity ping-fail-retry 7-132

link-integrity ethernet-detect 7-132

show link-integrity 7-133
IAPP Commands 7-134

iapp 7-134
VLAN Commands 7-135

vlan 7-135

management-vlanid 7-136

vlan-id 7-136
WMM Commands 7-137

wmm 7-138

wmm-acknowledge-policy 7-138

wmmparam 7-139

Appendix A: Troubleshooting A-1

Appendix B: Cables and Pinouts B-1

Twisted-Pair Cable Assignments B-1

10/100BASE-TX Pin Assignments B-1

Straight-Through Wiring B-2

xv

Contents

Crossover Wiring B-3
8-Pin DIN Connector Pinout B-3
8-Pin DIN to RJ-45 Cable Wiring B-4

Appendix C: Specifications C-1

General Specifications C-1
Sensitivity C-4
Transmit Power C-5

Appendix D: Montieren der Bridge D-1

Verwenden der Halterung für Mastmontage D-1
Verwenden der Halterung für Wandmontage D-3
Anschließen der externen Antennen D-5
Anschließen der Kabel an das Gerät D-6
Anschließen des PoE Injectors D-7

Glossary

Index

xvi

Chapter 1: Introduction

The Dual-band Outdoor Acc ess P oint / Bri dge system consists of two mode ls th at
provide point-to-point or poi nt - to -m u lti poi n t br idge links between remo te Eth er net
LANs, and wireless access point services for clients in t he l oc al LAN ar ea:

• SMC2891W-AG – Includes an integrated high-gain antenna for the 802.11a radio
and is designed to operate as a “bridge node” in point-to-multipoint configurations,
or provide a high-speed point-to-point wireless link between two sites that can be
up to 15.4 km (9.6 miles) apart. The 802.11b/g radio requires an external antenna
option.

• SMC2890W-AG – Provides only external ant enna options and is design ed t o
operate as the “root bridge” in poi nt - to -multipoint configurations, supporting
wireless bridge connections to as many as six units.

Note: Both models can be set to operate in either “root bridge” or “bridge node” mode.

Each model is housed in a we at her pr oof enclosure for mounti ng outdoors and
includes its own brackets for attaching to a wall, pole, radio mast, or tower structure.
The unit is powered through its Ethe rn et cab le connection from a power inje ctor
module that is installed indoors.

The wireless bridge system offers a fast, reliable, and cost-effective solution for
connectivity between re mote Ethernet wired LAN s or to provide Internet access to
an isolated site. The syste m is a ls o eas y t o in stall and operate, ideal for situations
where a wired link may be difficult or expensive to deploy. The wireless bridge
connection provides data rat es of up to 108 Mbps.

In addition, both wireless bridge models offer full network managem ent capabilities
through an easy-to-us e w eb interface, a command-l ine i nt er fa ce, and support for
Simple Net w ork Managemen t Protocol ( SN M P) tools.

Radio Characteristics

The IEEE 802.11a and 802.11g standards use a radio modulation techniq ue known
as Orthogonal Freque ncy Division Multiplexin g (OFDM), and a shared col lision
domain (CSMA/CA). Th e 802.11a standard operates in the 5 GHz Unlicensed
National Information Infr ast r uct ure (UNII) band, and the 802.11g standard in the

2.4 GHz band.

IEEE 802.11g includes backward compatibility with the IEEE 802.11b standard.
IEEE 802.11b also operates at 2.4 GHz, but uses Direct Se quence Spread
Spectrum (DSSS) and Complementary Code Keying (CCK) modulat ion t echnology
to achieve a communication rate of up to 11 Mbps.

The wireless bridge provides a 54 Mbps half-duplex con nection for each active
channel (up to 108 Mbps in turb o m ode on the 802.11a interface).

1-1

Introduction

1

Package Checklist

The Dual-band Outdoor Acc ess P oint / Bri dge package includes:

• One Wireless Dual-band Acc ess Poi nt (S M C 2890W-AG or SMC289 1W - A G )

• One Category 5e network PoE ca ble, len gt h 98 ft (3 0 m )

• One power injector module and power cord 5.9 ft (1.8 m)

• One RS232 console cable 5.9ft (1.8 m)

• Outdoor pole- and wall-moun ting bracket kit

• User Guide CD
Inform your dealer if there are a ny inc or re ct , missing or damaged parts. If possibl e,

retain the carton, including the original packing materials. Use them again to repack
the product in case there is a need to return it.

Hardware Description

Bottom View
(both models)

Console Port
CoverAttachment

Top View
(SMC2891W-AG)

N-Type External
Antenna Connector
(2.4 GHz)

1-2

Console Port

Ethernet/PoE
Connector

N-Type External
Antenna Connector
(5 GHz)

Water-Tight Test Point
(DO NOT REMOVE)

Integrated Antenna

N-Type External
Antenna Connector
(2.4 GHz)

Top View
(SMC2890W-AG)

LED Indicators

1

N-Type External
Antenna Connector
(2.4 GHz)
Right Antenna

N-Type External
Antenna Connector
(5 GHz)
Right Antenna

N-Type External
Antenna Connector
(5 GHz)
Left Antenna

N-Type External
Antenna Connector
(2.4 GHz)
Left Antenna

LED Indicators

The access point includ es eig ht status LED indicators, as indicated in the following
figure.

802.11b/g Wireless
Link/Activity

11b/g

11a

802.11a Wireless
Link/Activity

Power

Link

The following table describe s th e system status LEDs.

LED Status Description

Power On Green Indicates that the system is working normally.

On Amber Indicates a system reset.

Link On Green Indicates a valid 10/100 Mbps Ethernet cable link.

Flashing Green Indicates that the access point is transmitting or receiving data

on a 10/100 Mbps Ethernet LAN. Flashing rate is proportional
to network activity.

Power

Ethernet
Link/Activity

1-3

Introduction

1

The 11a and 11b/g LEDs operate in two display mo des, which are configurab le
through the management i nt er face. The RSSI mode is for aligning ant en nas in a
bridge link. The AP mode is for indicating data traffic rates.

The following table describes th e w ire le ss status LEDs in AP mode.

LED Status Description

11a
(three LEDs)

11b/g
(three LEDs)

Off No signal detected or the 802.11a radio is disabled.
Slow Flashing Green The 802.11a radio is enabled with a low level of network

activity.
Fast Flashing Green Indicates a medium level of network activity.
On Green Indicates a high level of network activity.
Off No signal detected or the 802.11b/g radio is disabled.
Slow Flashing Green The 802.11b/g radio is enabled with a low level of network

activity.
Fast Flashing Green Indicates a medium level of network activity.
On Green Indicates a high level of network activity.

The following table describes th e w ire le ss status LEDs in RSSI mode.

LED Status Description

11a
(three LEDs)

11b/g
(three LEDs)

Off No signal detected or the 802.11a radio is disabled.
Slow Flashing Green The 802.11a radio is enabled with a low level signal.
Fast Flashing Green Indicates a medium level signal.
On Green Indicates a high level signal.
Off No signal detected or the 802.11b/g radio is disabled.
Slow Flashing Green The 802.11b/g radio is enabled with a low level signal.
Fast Flashing Green Indicates a medium level signal.
On Green Indicates a high level signal.

1-4

Introduction

1

Ethernet Port

The wireless bridge has one 10BASE-T/100 BASE-TX 8-pin DIN port that connects
to the power injector module using the included Etherne t cabl e. The Eth er net port
connection provides pow er to the wireless bridge as we l l as a data lin k t o th e local
network.

The wireless bridge appear s as an Ethernet node and per f orms a bridging function
by moving packets from the wired LAN to the remote end of th e w irel ess bridge link.

Note: The power injector module does not support Power over Ethernet (PoE) based on

the IEEE 802.3af standard. The wireless bridge unit must always be powered on
by being connected to the power injector module.

Power Injector Module

The wirele ss bridge rece i ves power through its network cable co nnection us i ng
power-over-Ethernet technology. A power injector module is included in the wireless
bridge package and provides two RJ-45 Ethernet ports, one for connecting to the
wireless bridge (Output ) , and th e ot her for connecting to a local LAN s w itch (Input).

The Input port uses an MDI (i.e., internal straight-through) pin configuration. You can
therefore use straight-through twisted-pair cable to connect this port to most network
interconnection devi ces such as a switch or router tha t pr ov i de M D I -X ports.
However, when connecting the acce ss point to a workstation or other device that
does not have MDI-X po rts, you mu st use crossover twisted -pair ca bl e.

LED Indicator

Input Output

Ethernet from
Local Network

The wireless bridge doe s not ha ve a power switch. It is power ed on when its
Ethernet port is connected to the power injector module, and the power injector
module is connected to an AC pow e r so urce. The power injector inc lu des one LED
indicator that turns on when AC power is applied.

Ethernet and Power
to Wireless Bridge

AC Power Socket
(Hidden)

1-6

Grounding Point

The power injector modul e automatically adjusts to an y AC voltage between
100-240 volts at 50 or 60 Hz. No v ol tage range settings are required.

Warning: The power injector module is designed for indoor use only. Never mount

the power injector outside w ith t he wireless bridge unit.

Grounding Point

Even though the wireles s br id ge inc l udes its own built-in lightnin g pr ot ect ion, it is
important that the unit is properl y connected to ground. A grounding screw is
provided for attaching a groun d w i re to the unit.

Water Tight Test Point

Caution: Do no remove or loosen this screw. Doing so could lead t o damage of the

unit.

Wall- and Pole-Mounting Bracket Kit

The wireless bridge includes a bracket kit that can be used to mount the bridge to a
wall, pole, radio mast, or part of a to wer st ru ct ure.

1

1-7

Introduction

1

System Configuration

At each location where a un it is in stalled, it must be connected to the l ocal network
using the power injector mo dule. The following figure illustrates the system
component connect i ons .

External Antenna

RF Coaxial Cable

Wireless Bridge Unit

Ground Wire

LAN Switch

Ethernet Cable

AC Power

Indoor Outdoor

Power
Injector

Lightning

Arrestor

Ethernet

Cable

Features and Benefits

• SMC2891W-AG units support a 5 GHz point-to-point wireless link up 15.4 km (at
6 Mbps data rate) using integrated high-gain 17 dBi antennas

• SMC2890W-AG units support 5 G Hz point-to-multipoint lin ks using various
external antenna options

• Both SMC2890W-AG and SMC2891W-AG units also support access po int
services for the 5 GHz and 2.4 GHz radios using various external antenna options

• Maximum data rate up to 108 Mb ps on the 802.11a (5 GHz) radi o

• Outdoor weatherproof design

• IEEE 802.11a and 802.11b/g compliant

• Local network connection via 10/ 100 Mbps Ethernet port

• Powered through its Ethernet cab le connection to the power injec tor m od ul e

• Includes wall- and pole-mount bracket

• Security through 64/128/152- bi t Wir ed Equivalent Protection ( WEP) or 128-bit
Advanced Encryption Standard (AES) encryption

• Scans all available channels and selects the best channel and data rate based on
the signal-to-noise rat io

• Manageable through an easy -t o- us e w eb-browser interface, command line (via
Telnet), or SNMP network management tools

1-8

Chapter 2: Network Configuration

The Dual-band Outdoor Acc ess P oint / Bri dge system provides acces s point and
bridging services through either the 5 GHz or 2.4 GH z rad io interfaces.

The wireless bridge units ca n be us ed just as normal 802.11a/b/g access points
connected to a local wired LAN, providing connectivity and roaming services for
wireless clients in an outdoor area. Units can also be used pure l y as b ridges
connecting remote LA N s. Al te rn at iv ely, you can employ both ac cess point and
bridging functions together, offering a flexible and convenient wireless sol ut ion f or
many applications.

This chapter describes the r ol e of Dual - band Outdoor Access Point / Bridge in
various wireless netw or k configurations.

Access Point Topologies

Operating as an outdoo r access point , the unit is deployed in an integrated
configuration with wired Ethernet LANs, provi di ng network access to wire l ess
stations in the wireless coverage area.

The access point’s radios can s upport these modes:

• Infrastructure wireless LAN

• Infrastructure wireless LAN with roaming

• Point-to-point bridge link

• Poin t - to-multipoint brid ge links
The 802.11b and 802.11g frequency band, which operates at 2.4 GHz, can easily

encounter interferen ce f ro m other 2.4 GHz device s, such as other 802.11b or g
wireless devices, cordless phones and microwave ovens. If you experience poor
wireless LAN perform ance, try the following measures:

• Limit any possible sources of radio interference within the service area

• Increase the distance between n ei ghb oring access points

• Increase the channel separation of neighboring access points (e.g., up to 3
channels of separation for 802 .11b or up to 5 channels for 802. 11g)

2-1

Network Configuration

2

Infrastructure Wireless LAN

The access point function of the wireless bridge provi des access to a wired LAN for

802.11a/b/g wireless workstations. An integrate d w i re d/ wi reless LAN is called an
Infrastructure configurat ion. A Basic Service Set (BSS) consists of a gro up of
wireless PC users and an access point that is directly connected to the wired LAN .
Each wireless PC in a BSS can con nect to any computer in its wireless group or
access other compu te rs or ne tw ork resources in the wired LAN infrastructure
through the access poin t.

The infrastructure configuration not only extends the accessibility of wireless PCs to
the wired LAN, but also increases the effective wireless transmission range for
wireless PCs by passing their si gna ls th ro ugh one or more access po ints.

A wireless infrastructur e c an be used for access to a cent ral database, or for
connection between mo bi l e workers, as shown in the fol lo wi ng f ig ur e.

Wired LAN Extension
to Wireless Clients

Server

2-2

Desktop PC

Switch

Access Point

Notebook PC

Desktop PC

Access Point Topologies

Infrastructure Wireless LAN for Roaming Wireless PCs

The Basic Service Set (BSS) defines the communications domain for each access
point and its associated wirele ss cl ients. The BSS ID is a 48-bit binary num ber
based on the access po int ’s wirel es s M A C ad dress, and is set automat ical l y and
transparently as clients associ ate w i th the access point. The BSS ID is used in
frames sent between the access point and its clients to identify traffic in the service
area.

The BSS ID is only set by the access point, never by its clients. The clie nts only
need to set the Service Set Iden tifi er (SSID ) that ide nti fies the ser vice set provided
by one or more access points. The SSID can be m anually configured by the clien ts,
can be detected in an access point’s beacon, or can be obtained by querying for the
identity of the nearest access point. For clients that do not need to roam, set the
SSID for the wireless card to that used by the access point to whi ch you want to
connect.

A wireless infrastructure can also support roaming for mobile workers. More than
one access point can be conf igured to create an Extended S er vice Set (ESS). By
placing the access poi nts so tha t a c ont i nuous coverage area is cr eat ed, wireless
users within this ESS can ro am freely. All wireless network card adapters and
wireless access points within a specific ESS must be configured with the same
SSID.

Seamless Roaming

Between Access Points

2

Desktop PC

Switch

Access Point

Desktop PC

Server

Notebook PC

<BSS 1>

Switch

Access Point

Notebook PC

<BSS 2>

<ESS>

2-3

Network Configuration

2

Bridge Link Topologies

The IEEE 802.11 standard defines a WIreless Distribution System (WDS) for bridge
connections betwee n BSS areas (access points). The outdo or wir eless bridge uses
WDS to forward traffic on links between units. Up to 5 WDS links can be specified for
a SMC2890W-AG unit, which acts as the “Master” in the wireless bridge net w ork.
Other SMC2891W-AG units support only one WDS link, which must be to the
network’s master unit .

The unit supports WDS bridge links on either the 5 GHz (802.11a) or 2.4 GHz
(802.11b/g) bands and can be used with vario us ex t ernal antennas to offer flexible
deployment options.

Note: The external antennas offer longer range options using the 5 GHz radio, which

makes this interface more suitable for bridge links. The 2.4GHz radio has various
types of antenna options, but the 8dBi omnidirectional antenna is better suited for
local access point services.

When using WDS on a radi o band, only wireless bridge units can associate to each
other. Wireless clients can only associate with the wireless bridge using a radio band
set to access point mode.

Point-to-Point Configurat ion

Two SM C2891W- AG bridges can form a wireless point-to - point link using their
integrated 5 GHz (802.11a) antennas. A point-to-poi n t co nf ig ur at ion can provide a
limited data rate (6 Mbps) link over a long ra nge (up to 15.4 km), or a high data rate
(108 Mbps) over a short range ( 1. 3 km ) .

2-4

SMC2891W-AG SMC2891W-AG

LANLAN