SMC Networks EliteConnect SMC2582W-B User manual

SMC2582W-B

Copyright
Information furnished by SMC Networks,Inc.(SMC) is believed to be accurate and reliable.How-
ever,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 other-
wise under any patent or patent rights of SMC.SMC reserves the right to change specifications at
any time without notice.
Copyright © 2003 by
SMC Networks,Inc.
38 Tesla
Irvine,California 92618
All rights reserved.
Trademarks
SMC is a registered trademark;and EliteConnect is a trademark of SMC Networks.Other product and
company names are trademarks or registered trademarks of their respective holders.
2

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
radiated 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 interfer-
ence 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: To assure continued compliance,(example – use only shielded interface cables
when connecting to computer or peripheral devices).Any changes or modifications not expressly
approved by the party responsible for compliance could void the user’s authority to operate this
equipment.
This transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environ-
ment.This equipment should be installed and operated with minimum distance 20 cm between the
radiator & your body.
This device complies with Part 15 of the FCC Rules.Operation is subject to the following two condi-
tions:(1) This device may not cause harmful interference,and (2) this device must accept any inter-
ference received,including interference that may cause undesired operation.
Industry Canada - Class B
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital appa-
ratus as set out in the interference-causing equipment standard entitled“Digital Apparatus,”ICES-
003 of Industry Canada.
Cet appareil numerique respecte les limites de bruits radioelectriques applicables aux appareils
umeriques de Classe B prescrites dans la norme sur le material brouilleur:“Appareils Numeriques,”
NMB-003 edictee par l’Industrie.
3

EC Conformance Declaration - Class B
SMC contact for these products in Europe is:
SMC Networks Europe,
Edificio Conata II,
Calle Fructuós Gelabert 6-8,Planta 2,
08970 - Sant Joan Despí,
Barcelona,Spain.
This RF product complies with R&TTE Directive 99/5/EC (Annex IV) and with the requirements of the
Council Directive 89/336/EEC on the Approximation of the laws of the Member States relating to
Electromagnetic Compatibility and 73/23/EEC for electrical equipment used within certain voltage
limits and the Amendment Directive 93/68/
EEC.For the evaluation of the compliance with these Directives,the following standards were
applied:
• Electromagnetic compatibility and radio spectrum matters (ERM) EN300 328-1 (2001-12) and
EN300 328-2 (2001-12)
• Electromagnetic Compatibility (EMC) Standard for radio equipment and services EN301 489-1
and EN301 489-17
• Safety Test EN60950
• Immunity to conducted disturbances,Induced by radio-frequency fields EN 61000-4-6:1996
(0.15 - 80 MHz with 1 kHz AM 80% Modulation:3 V/m)
• Power frequency magnetic field immunity test according to EN 61000-4-8:1993 (1 A/m at
frequency 50 Hz)
• Voltage dips,short interruptions and voltage variations immunity test according to EN 61000-
4-11:1994 (>95% Reduction @10ms,30% Reduction @500 ms,>95% Reduction @5000 ms)
• LVD:EN 60950 (A1/1992;A2/1993;A3/1993; A4/1995;A11/1997)
• MDD:IEC 60601-1
Wichtige Sicherheitshinweise (Germany)
1.Bitte lesen Sie diese Hinweise sorgfältig durch.
2.Heben Sie diese Anleitung für den späteren Gebrauch auf.
3.Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen.Verwenden Sie keine Flüssig- oder
Aerosolreiniger.Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung.
4.Die Netzanschlußsteckdose soll nahe dem Gerät angebracht und leicht zugänglich sein.
5.Das Gerät ist vor Feuchtigkeit zu schützen.
6.Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten.Ein Kippen oder Fallen könnte
Beschädigungen hervorrufen.
7.Die Belüftungsöffnungen dienen der Luftzirkulation,die das Gerät vor Überhitzung schützt.
Sorgen Sie dafür,daß diese Öffnungen nicht abgedeckt werden.
4

8.Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.
9. Verlegen Sie die Netzanschlußleitung so,daß niemand darüber fallen kann.Es sollte auch nichts
auf der Leitung abgestellt werden.
10.Alle Hinweise und Warnungen,die sich am Gerät befinden,sind zu beachten.
11.Wird das Gerät über einen längeren Zeitraum nicht benutzt,sollten Sie es vom Stromnetz
trennen.Somit wird im Falle einer Überspannung eine Beschädigung vermieden.
12.Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät
gelangen.Dies könnte einen Brand bzw.elektrischen Schlag auslösen.
13.Öffnen Sie niemals das Gerät.Das Gerät darf aus Gründen der elektrischen Sicherheit nur von
authorisiertem Servicepersonal geöffnet werden.
14.Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer
qualifizierten Servicestelle zu überprüfen:
a.Netzkabel oder Netzstecker sind beschädigt.
b. Flüssigkeit ist in das Gerät eingedrungen.
c.Das Gerät war Feuchtigkeit ausgesetzt.
d.Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioniert oder Sie mit Hilfe
dieser Anleitung keineVerbesserung erzielen.
e.Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f.Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.
15.Stellen Sie sicher,daß die Stromversorgung dieses Gerätes nach der EN60950 geprüft ist.
Ausgangswerte der Stromversorgung sollten dieWerte von AC 7,5-8V,50-60Hz nicht über- oder
unterschreiten sowie den minimalen
Strom von 1A nicht unterschreiten.Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635
Teil 1000 beträgt 70dB(A) oder weniger.
5

6
1. Introduction
1.1. Overview
The SMC2582W-B is a versatile device that can be configured to be in one of the 3 operational
modes—Access Point,Bridge Master, and Bridge Slave—for various wireless bridging applications.
With the convenientWeb-based user interface,a network administrator can easily and clearly man-
age the SMC2582W-B.
In Chapter 2,we describe the steps to install and configure a newly acquired SMC2582W-B.
Following the steps,the SMC2582W-B can be quickly set up to work.In Chapter 3,detailed explana-
tion of each Web management page is given for the user to understand how to fine-tune the set-
tings of an SMC2582W-B to meet his or her specific needs.
1.2. Features
• IEEE 802.11b
• Operational modes.
•Access Point. The AP enables IEEE 802.11 Stations (STAs) to automatically associate
with it via the standard IEEE 802.11 association process.In addition,the IEEE 802.11
WDS (Wireless Distribution System) technology can be used to manually establish
wireless links between two APs or between an AP and a Bridge Master.
• Bridge Master.Usethismodeto provide the Bridge Master functionality of the
SMC2682W.The Bridge Master mode is designed to work in those networks where
SMC2682W Wireless Bridge Slaves are already installed.The Bridge Master enables
Bridge Slaves to automatically associate with it.It also enables IEEE 802.11 Stations,
which are on the same LAN as the Bridge Master, to automatically associate with it via
the standard IEEE 802.11 association process.In addition,the IEEE 802.11 WDS (Wireless
Distribution System) technology can be used to manually establish wireless links
between two Bridge Masters or between a Bridge Master and an AP.
• Bridge Slave. Use this mode to provide the Bridge Slave functionality of the
SMC2682W.The Bridge Slave mode is designed to work in those networks where
SMC2682W Wireless Bridge Masters are already installed.
• 64-bit and 128-bit WEP (Wired Equivalent Privacy).Forwireless data encryption.
• Enabling/disabling SSID broadcasts. When the SMC2582W-B is in AP or Bridge
Master mode,the administrator can enable or disable the SSID broadcasts functionality
for security reasons.When the SSID broadcasts functionality is disabled,an STA or Bridge
Slave cannot associate with the AP or Bridge Master with an ANY network name (SSID,
Service Set ID);the correct SSID has to be specified on the STA or Bridge Slave.

• MAC-address-based access control. When the SMC2582W-B is in AP or Bridge Master
mode,it can be configured to block unauthorized STAs or Bridge Slaves based on MAC (Media
Access Control) addresses.The ACL (Access Control List) can also be downloaded from aTFTP
server.
• Transmit power control. Transmit power of the SMC2582W-B can be adjusted to control the
area of coverage.
• Link integrity. When the SMC2582W-B is in AP or Bridge Master mode and the Ethernet LAN
interface is detected to be disconnected from the wired network,all currently associated wire-
less clients (STAs and Bridge Slaves) are disassociated by the SMC2582W-B and no wireless client
can associate with it thereafter.
• Associated wireless clients status. Showing the status of all wireless clients (STAs and
Bridge Slaves) that are associated with the SMC2582W-B.
• Detachable antenna. The SMC2582W-B antenna can be replaced with high-gain antennas
for long operating range.
• DHCP client. The SMC2582W-B can automatically obtain an IP address from a DHCP server.
• DHCP server.The SMC2582W-B can automatically assign IP addresses to computers or other
devices by DHCP (Dynamic Host Configuration Protocol).
• Static DHCP mappings.The administrator can specify static IP address to MAC
address mappings so that the specified IP addresses are always assigned to the hosts
with the specified MAC addresses.
• Showing current DHCP mappings. Showing which IP address is assigned to which
host identified by a MAC address.
• Packet Filtering. The SMC2582W-B provides Layer 2,Layer 3,and Layer 4 filtering capabilities.
• Firmware Tools
• Firmware upgrade. The firmware of the SMC2582W-B can be upgraded via the following
methods:
• TFTP-based. Upgrading firmware byTFTP (Trivial FileTransfer Protocol).
• HTTP-based. Upgrading firmware by HTTP (HyperText Transfer Protocol).
• Configuration backup. The configuration settings of the SMC2582W-B can be backed
up to a file via TFTP or HTTP.
• Configuration reset. Resetting the configuration settings to factory-default values.
7

• Management
• Web-based management for configuring and monitoring SMC2582W-B via a Web-Browser.
• SNMP. SNMP (Simple Network Management Protocol) MIB I,MIB II,IEEE 802.1d,and Private
Enterprise MIB are supported.
• UPnP. The SMC2582W-B responds to UPnP discovery messages so that a Windows XP user can
locate the SMC2582W-B in My Network Places and use a Web browser to configure it.
• Telnet. The SMC2582W-B can be managed by Telnet.
• System log. For system operational status monitoring.
• Local log. System events are logged to the on-board RAM of the SMC2582W-B and can be
viewed using aWeb browser.
• Remote log by SNMP trap. Systems events are sent in the form of SNMP traps to a remote
SNMP management server.
• Remote log by BSD Syslog. Systems events are sent in the form of BSD Syslog (RFC3164) to
a remote Syslog server.
• Power over Ethernet (optional). Supplying power to an SMC2582W-B over an Ethernet cable
using SMCPWR-INJ3 Power Injector (IEEE 802.3af compliant).This feature facilitates large-scale
wireless LAN deployment.
• Hardware Watchdog Timer. If the firmware gets stuck in an invalid state, the hardware watch-
dog timer will detect this situation and restart the SMC2582W-B.This way,the SMC2582W-B can
provide continuous services.
8

1.3. LED Definitions
There are several LED indicators on the housing of the SMC2582W-B.They are defined as follows:
• ALV: Alive.Blinks when the SMC2582W-B is working normally.
• RF: IEEE 802.11b interface activity
• LAN: Ethernet LAN interface activity
• PWR: Power
9

2. First-Time Installation and Configuration
2.1. Selecting a Power Supply Method
The SMC2582W-B can be powered by either the supplied power adapter or the optional SMCPWR-
INJ3 EliteConnect™ Power Injector.The SMC2582W-B automatically selects the suitable power
depending on your decision.
To power the SMC2582W-B by the supplied power adapter:
1. Plug the power adapter to an AC socket.
2. Plug the connector of the power adapter to the power jack of the SMC2582W-B.
NOTE: This product is intended to be power-supplied by a Listed Power Unit,marked“Class 2”or
“LPS”and output rated“5V DC,1 A minimum”or equivalent statement.
To power the SMC2582W-B by SMCPWR-INJ3 Power Injector:
1. Connect the power cord cable from power outlet to the SMCPWR-INJ3 power connector.
Fig.1.Connecting the power cord cable to SMCPWR-INJ3.
2. Check the“POWER”LED:if system is normal,the LED will be on (Green light);otherwise,the
“POWER”LED will be off.
3. Connect the Ethernet cable (RJ-45 Category 5) from Ethernet Hub/Switch to the“DATA IN”port
of SMCPWR-INJ3 Power Injector.
4. Connect another Ethernet cable (RJ-45 Category 5) from“POWER & DATA OUT”port of the SMCP
WR-INJ3 Power Injector to the SMC2582W-BWireless Bridge.
10
To power outlet

Fig.2.Connecting Ethernet cables to SMCPWR-INJ3.
5. Check the“ACTIVE”LED:if power is successfully fed into the SMC2582W-B,the“ACTIVE”LED will
be on (Red light);otherwise,the“ACTIVE”LED will be off.
6. If the electricity current is over the normal condition (Io°÷1.0 A),the“ACTIVE”LED will flash
(Red light).
NOTE: SMCPWR-INJ3 is specially designed for“SMC2582W-B EliteConnect™ 2.4GHz
11Mbps Wireless Bridge.The use of SMCPWR-INJ3 with other Ethernet-ready devices
that are not compliant to 802.3af may cause damage to the devices.
2.2. Mounting the SMC2582W-B on a Wall
The SMC2582W-B is wall-mountable.
1. Stick the supplied sticker for wall-mounting.
2. Use a ø7.0mm driller to drill a 25mm-deep hole at each of the cross marks.
3. Plug in a supplied plastic conical anchor in each hole.
4. Screw a supplied screw in each plastic conical anchor for a proper depth so that the
SMC2582W-B can be hung on the screws.
5. Hang the SMC2582W-B on the screws.
11

Fig. 3.Mounting the SMC2582W-B on a wall.
2.3. Preparing for Configuration
For you to configure an SMC2582W-B,a managing computer with a Web browser is needed.For
first-time configuration of an SMC2582W-B,an Ethernet network interface card (NIC) should have
been installed in the managing computer.For maintenance-configuration of a deployed
SMC2582W-B,either a wireless computer or a wired computer can be employed as the managing
computer.
NOTE: If you are using the browser,Opera,to configure an SMC2582W-B,click the menu item
File, click Preferences...,click File types, and edit the MIME type,text/html, to add a file
extension“.sht”so that Opera can work properly with theWeb management pages of the SMC2582W-B.
Since the configuration/management protocol is HTTP-based,you have to make sure that the IP
address of the managing computer and the IP address of the managed SMC2582W-B are
in the same IP subnet (the default IP address of an AP is 192.168.2.50 and the default
subnet mask is 255.255.255.0.)
2.3.1. Connecting the Managing Computer and the SMC2582W-B
To connect the Ethernet managing computer and the managed SMC2582W-B for first-time configu-
ration,you have two choices as illustrated in Fig.4.
12

Fig. 4.Connecting a managing computer and an SMC2582W-B via Ethernet.
You can use either a cross-over Ethernet cable (included in the package) or a switch/hub with 2 nor-
mal Ethernet cables.
NOTE: One connector of the Ethernet cable must be plugged into the LAN/CONFIG Ethernet jack
of the SMC2582W-B for configuration.
2.3.2. Changing the TCP/IP Settings of the Managing Computer
Use the Windows Network Control Panel Applet to change theTCP/IP settings of the managing
computer,so that the IP address of the computer and the IP address of the SMC2582W-B are in the
same IP subnet.Set the IP address of the computer to 192.168.2.xxx (the default IP address of the
SMC2582W-B is 192.168.2.50) and the subnet mask to 255.255.255.0.
TIP: You can use SMC2582W-B Configuration Utility on the companion CD-ROM to scan
for all the SMC2582W-Bs on the network.Double-click a scanned SMC2582W-B to launch
the Web browser to manage the SMC2582W-B.Note that this utility does not discover the
SMC2682W.
NOTE: OnWindows 2000/XP,SMC2582W-B Configuration Utility can only be run by a
user with administrator privilege.
NOTE: For some versions of Windows,the computer needs to be restarted for the
changes of TCP/IP settings to take effect.
13

2.4. Configuring the SMC2582W-B
After the IP addressing is configured,launch a Web browser on the managing computer.Then,go to
“http://192.168.2.50”to access the Start page of the SMC2582W-B’s Web-based management
interface.
TIP: For maintenance configuration of an SMC2582W-B,the SMC2582W-B can be reached
by its host name using a Web browser.For example,if the SMC2582W-B is named“AP”,you can
use the URL“http://AP”to access the Web-based management interface of the SMC2582W-B.
2.4.1. Entering the User Name and Password
Before the start page is shown,you will be prompted to enter the user name and password to gain
the right to access the Web-based management interface.For first-time configuration,use the
default user name“admin”and default password“smcadmin”,respectively.
Fig. 5.Entering the user name and password.
NOTE: It is strongly recommended that the password be changed to other value for security
reasons.On the start page,click the General, Password link to change the value of the
password (see Section 3.3.1 for more information).
TIP: Since the start page shows the current settings and status of the SMC2582W-B,
it can be saved or printed within the Web browser for future reference.
14

Fig. 6.The Start page.
2.4.2. Step 1: Selecting an Operational Mode
Fig. 7.Operational modes settings.
15

The SMC2582W-B supports 3 operational modes for meeting various wireless connectivity require-
ments:
• Access Point (AP). The AP mode enables IEEE 802.11 Stations (STAs) to automatically
associate with it via the standard IEEE 802.11 association process.In addition,the IEEE 802.11
WDS (Wireless Distribution System) technology can be used to manually establish wireless links
between two APs or between an AP and a Bridge Master.
• Bridge Master (BM). Use this mode to provide the Bridge Master functionality of the
SMC2682W.The Bridge Master mode is designed to work in those networks where SMC2682W
Wireless Bridge Slaves are already installed.The Bridge Master enables Bridge Slaves to
automatically associate with it.It also enables IEEE 802.11 Stations,which are on the same LAN
as the Bridge Master,to automatically associate with it via the standard IEEE 802.11 association
process.In addition,the IEEE 802.11 WDS (Wireless Distribution System) technology can be used
to manually establish wireless links between two Bridge Masters or between a Bridge Master
and an AP.
• Bridge Slave (BS). Use this mode to provide the Bridge Slave functionality of the SMC2682W.
The Bridge Slave mode is designed to work in those networks where SMC2682WWireless Bridge
Masters are already installed.
In any mode,the SMC2582W-B forwards packets between its Ethernet interface and wireless inter-
face for wired hosts on the Ethernet side and wireless host(s) on the wireless side.
There are 2 types of wireless links between two SMC2582W-Bs or between an SMC2582W-B and
another wireless device.
• WDS. This type of wireless link is specified in the IEEE 802.11 standard for communication
between two IEEE 802.11 APs.Wireless packets transmitted along the WDS link comply with the
IEEE 802.11 WDS (Wireless Distribution System) format at the link layer.
• BM-BS. This type of wireless link is used in the SMC2682W for providing LAN-to-LAN bridging
services.To establish this type of wireless link between two SMC2682W,one SMC2682W must be
in Bridge Master (BM) mode and the other must be in Bridge Slave (BS) mode.The SMC2582W-B
provides this type of wireless link for backward compatibility with the SMC2682W.
The relationships among the operational modes and the wireless link types are shown in the fol
lowing table: Table 1.Operational modes vs.wireless link types.
From the table,a WDS link can be establish between two APs,a BM-BS link can be established be-
tween a Bridge Master and a Bridge Slave,but no wireless link can be established between a Bridge
Slave and an AP.
16

Select an operational mode and click Save at the bottom of this page,and then you are brought
back to the start page.
2.4.3. Step 2: Configuring TCP/IP Settings
Fig. 8.TCP/IP settings.
Go to the TCP/IP Addressing section to configure IP address settings.The IP address can be manu-
ally set or automatically assigned by a DHCP server on the LAN.If you are manually setting the IP
address, Subnet mask, and Default gateway settings,set them appropriately,so that they com-
ply with your LAN environment.In addition,you can specify the Host name and Domain (DNS
suffix) of the SMC2582W-B.
When you are finished,click Save at the bottom of this page,and then you are brought back to the
start page.
2.4.4. Step 3: Configuring IEEE 802.11 Settings
Fig. 9.IEEE 802.11b communication settings.
Go to the IEEE 802.11, Communication section to configure IEEE 802.11b-related communication
settings,including Channel number and Network name (SSID).
The number of available RF channels depends on local regulations.
NOTE: The Regulatory domain setting of the SMC2582W-B sold in the U.S.and Canada is
not configurable.It is set to FCC by default.As a result,only channels from 1 to 11 are available.
NOTE: For two SMC2582W-Bs or one wireless client computer and one SMC2582W-B to establish
a wireless link,both devices must be configured with the same channel number and SSID.
17

If the SMC2582W-B was configured to be in AP or Bridge Master mode,and you want to use
WDS to establish inter-SMC2582W-B wireless links,configure theWDS settings.
Fig. 10.Wireless Distribution System settings.
To enable a WDS link:
1.Specify the MAC address of the AP or bridge at the other end of the WDS link.
2.Select the corresponding Enabled check box.
For example,assume you want two SMC2582W-Bs with MAC addresses 00-02-65-01-62-C5 and 00-
02-65-01-62-C6 to establish a WDS link between them.On SMC2582W-B 00-02-65-01-62-C5,set
the peer MAC address of port 1 to 00-02-65-01-62-C6 and on SMC2582W-B 00-02-65-01-62-C6,set
the peer MAC address of port 1 to 00-02-65-01-C5.
TIP: Plan your wireless network and draw a diagram,so that you know how the SMC2582W-B is
connected to other peer APs or wireless bridges byWDS.
Fig.11.Sample wireless bridge network topology.
WARNING: Don’t let your network topology consisting of wireless bridges,Ethernet switches,
Ethernet links,and WDS links contain loops.If any loops exist,packets will circle around the
loops and network performance will be seriously degraded.
18

Fig.12.Network topology containing a loop.
When you are finished,click Save at the bottom of this page,and then you are brought back to the
start page.
2.4.5. Step 4: Reviewing and Applying Settings
Fig. 13.Settings changes are highlighted in red.
On the start page,you can review all the settings you have made. Changes are higlighted in red.If
they are ok,click Restart to restart the SMC2582W-B for the new settings to take effect.
NOTE: About 7 seconds are needed for the SMC2582W-B to complete its restart process.
19

2.5. Deploying the SMC2582W-B
After the settings have been configured,deploy the SMC2582W-B to the field application environ-
ment.Connect the SMC2582W-B to an Ethernet LAN through an Ethernet switch/hub.
If external high-gain directional antennas are used for a long-range wireless bridging application,it
may be difficult to align the antennas.Here is a suggestion for antenna alignment.
To adjust the alignments of a pair of SMC high-gain antennas:
1.Connect each SMC2582W-B to a computer via Ethernet.
2.Configure the date rate of each SMC2582W-B to the lowest value,1Mbps.
3.Fix the alignment of the antenna on one side.
4.Adjust the alignment of the antenna on other side by using response time
information obtained from PINGing (run PING.exe) the“fixed-side”computer.
5.Fine-tune the alignment of the antenna until you get a best response time.
6.Increase the data rate of each SMC2582W-B simultaneously until a maximal workable
data rate is reached.You may not be able to use the highest data rate,11Mbps,
because of the distance and the gain of the antennas.
Fig. 14 illustrates the idea.
Fig. 14.Adjusting alignments of external directional antennas.
20