SMC Networks EliteConnect SMC2891W-AG User manual

USER GUIDE
SMC2890W-AG /
SMC2891W-AG
Elite Connect™
802.11a/g Outdoor Enterprise Access Point

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

i
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.

ii
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.

iii
• 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.

iv
Safety Compliance
Power Cord Safety
Please read the following safety information carefully before installing the device:
Warning: Installation and removal of the unit must be carried out by qualified personnel
only.
• The unit must be connected to an earthed (grounded) outlet to comply with international
safety standards.
• Do not connect the unit to an A.C. outlet (power supply) without an earth (ground)
connection.
• The appliance coupler (the connector to the unit and not the wall plug) must have a
configuration for mating with an EN 60320/IEC 320 appliance inlet.
• The socket outlet must be near to the unit and easily accessible. You can only remove
power from the unit by disconnecting the power cord from the outlet.
• This unit operates under SELV (Safety Extra Low Voltage) conditions according to IEC
60950. The conditions are only maintained ifthe equipment to which it is connected also
operates under SELV conditions.
France and Peru only
This unit cannot be powered from IT†supplies. If your supplies are of IT type, this unit
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:
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.
Allowed 5GHz Channels in Each European Community Country
Allowed Frequency Bands Allowed Channel Numbers Countries

v
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.
Power Cord Set
U.S.A. and
Canada 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.
Denmark The supply plug must comply with Section 107-2-D1, Standard
DK2-1a or DK2-5a.
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
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).
Europe The supply plug must comply with CEE7/7 (“SCHUKO”).
The mains cord must be <HAR> or <BASEC> marked and be of
type HO3VVF3GO.75 (minimum).
IEC-320 receptacle.

vi
• 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: 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).
Danemark: La prise mâle d’alimentation doit respecter la section 107-2 D1
de la norme DK2 1a ou DK2 5a.
Suisse: La prise mâle d’alimentation doit respecter la norme SEV/ASE
1011.
Europe La prise secteur doit être conforme aux normes CEE 7/7
(“SCHUKO”)
LE cordon secteur doit porter la mention <HAR> ou <BASEC> et
doit être de type HO3VVF3GO.75 (minimum).

vii
Bitte unbedingt vor dem Einbauen des Geräts die folgenden
Sicherheitsanweisungen durchlesen (Germany):
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.
• DerGerätestecker(derAnschluß andasGerät,nichtder 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 IEC60950.DieseBedingungensindnurgegeben,
wenn auch die an das Gerät angeschlossenen Geräte unter SELV-Bedingungen
betrieben werden.

viii
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
DK2-1a oder DK2-5a Bestimmungen einhalten.
Schweiz Dieser Stromstecker muß die SEV/ASE 1011Bestimmungen
einhalten.
Europe Das Netzkabel muß vom Typ HO3VVF3GO.75
(Mindestanforderung) sein und die Aufschrift <HAR> oder
<BASEC> tragen.
Der Netzstecker muß die Norm CEE 7/7 erfüllen (”SCHUKO”).

ix
Table of Contents
Chapter 1: Introduction 1-1
Radio Characteristics 1-1
Package Checklist 1-2
Hardware Description 1-2
LED Indicators 1-3
Integrated High-Gain Antenna 1-5
External Antenna Options 1-5
Ethernet Port 1-6
Power Injector Module 1-6
Grounding Point 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 Topologies 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 Cabling 3-5
Grounding 3-6
Chapter 4: Hardware Installation 4-1
Testing Basic Link Operation 4-1
Mount the Unit 4-1

x
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 Configuration 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

xi
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

xii
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

xiii
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

xiv
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 Commands 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

xv
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 Commands 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

xvi
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

1-1
Chapter 1: Introduction
The Dual-band Outdoor Access Point / Bridge system consists of two models that
provide point-to-point or point-to-multipoint bridge links between remote Ethernet
LANs, and wireless access point services for clients in the local LAN area:
•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 antenna options and is designed to
operate as the “root bridge” in point-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 weatherproof enclosure for mounting outdoors and
includes its own brackets for attaching to a wall, pole, radio mast, or tower structure.
The unit is powered through its Ethernet cable connection from a power injector
module that is installed indoors.
The wireless bridge system offers a fast, reliable, and cost-effective solution for
connectivity between remote Ethernet wired LANs or to provide Internet access to
an isolated site. The system is also easy to install and operate, ideal for situations
where a wired link may be difficult or expensive to deploy. The wireless bridge
connection provides data rates of up to 108 Mbps.
In addition, both wireless bridge models offer full network management capabilities
through an easy-to-use web interface, a command-line interface, and support for
Simple Network Management Protocol (SNMP) tools.
Radio Characteristics
The IEEE 802.11a and 802.11g standards use a radio modulation technique known
as Orthogonal Frequency Division Multiplexing (OFDM), and a shared collision
domain (CSMA/CA). The 802.11a standard operates in the 5 GHz Unlicensed
National Information Infrastructure (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 Sequence Spread
Spectrum (DSSS) and Complementary Code Keying (CCK) modulation technology
to achieve a communication rate of up to 11 Mbps.
The wireless bridge provides a 54 Mbps half-duplex connection for each active
channel (up to 108 Mbps in turbo mode on the 802.11a interface).