Aruba Networks MP-50-B User manual

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Aruba 50
Wireless Access Point
Installation Guide
TM
180 Great Oaks Blvd. Ste B
San Jose, California 95119
Net www.arubanetworks.com
Tel [phone]
Fax [phone]
Model Name :
MP-50-B
WLAN Access Point

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Copyright
Copyright © 2003 Aruba Wireless Networks, Inc. All rights reserved.
Specifications in this manual are subject to change without notice.
Originated in the USA.
Trademarks
AirOS, Aruba 50, and Aruba 5000 are trademarks of Aruba Wireless Networks in the United States and
certain other countries.
The K & Lock design is a registered trademark of the Kensington Technology Group in the United States
and certain other countries.
Any other trademarks appearing in this manual are owned by their respective companies.

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Compliance
FCC - Class B
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 instructions, may cause harmful interference to
radio communications. However, there is no guarantee that the 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 interfer-
ence by one or more of the following measures:
zReorient the receiving antenna
zIncrease the separation between the equipment and receiver
zConnect the equipment into an outlet on a circuit different from that to which the receiver is con-
nected
zConsult the dealer or an experienced radio/TV technician for help
FCC Caution: To assure continued compliance, use only shielded interface cables when connecting to
computer or peripheral devices. Any changes or modifications not expressly approved by the party respon-
sible 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.
CAUTION STATEMENT: FCC RF Radiation Exposure Statement
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environ-
ment. 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 con-
junction with any other antenna or transmitter.
Industry Canada - Class B
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as
set out in the interference-causing equipment standard entitled “Digital Apparatus,” ICES-003 of the
Department of Communications.
Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils numériques
de Classe B prescrites dans la norme sur le matériel brouilleur: “Appareils Numériques,” NMB-003 édictée
par le ministère des Communications.
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.

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Contents v
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Contents
Preface . . . . . . . . . . . . . . . . . . . . . . vii
Related Documents. . . . . . . . . . . . . . . . . . vii
Text Conventions . . . . . . . . . . . . . . . . . . viii
Contacting Aruba Wireless Networks . . . . . . . . . . ix
Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . 1
Product Features . . . . . . . . . . . . . . . . . . . . 1
Ethernet Compatibility . . . . . . . . . . . . . . . 2
Radio Characteristics . . . . . . . . . . . . . . . . 2
Power Over Ethernet . . . . . . . . . . . . . . . . 2
Physical Description . . . . . . . . . . . . . . . . . . 3
Package Checklist . . . . . . . . . . . . . . . . . 3
Top Panel . . . . . . . . . . . . . . . . . . . . . 3
Rear Panel . . . . . . . . . . . . . . . . . . . . . 5
Chapter 2 Setup & Installation . . . . . . . . . . . . . 7
Requirements . . . . . . . . . . . . . . . . . . . . . 7
Select a Network Topology . . . . . . . . . . . . . . . 8
Perform Initial Setup . . . . . . . . . . . . . . . . . . 10
Direct SPOE to the Aruba WLAN Switch . . . . . 10
Direct Terminal Connection . . . . . . . . . . . . 11
Configure the Aruba 50. . . . . . . . . . . . . . . 12
Mount the Aruba 50 . . . . . . . . . . . . . . . . . . 14
Free-Standing Placement . . . . . . . . . . . . . . 15
Using the Mounting Kit . . . . . . . . . . . . . . 15

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Connect Required Cables . . . . . . . . . . . . . . . . 18
Direct SPOE to the Aruba WLAN Switch . . . . . 18
LAN or POE Connection. . . . . . . . . . . . . . 19
Appendix A Troubleshooting . . . . . . . . . . . . . . . 21
Appendix B Port Specifications . . . . . . . . . . . . . 23
Console Port . . . . . . . . . . . . . . . . . . . . . . 23
FE Port . . . . . . . . . . . . . . . . . . . . . . . . 24
SPOE Adapter . . . . . . . . . . . . . . . . . . . . . 25
Appendix C Product Specifications . . . . . . . . . . 27

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Preface
The preface includes the following information:
zA list of related documentation for further reading
zA key to the various text conventions used throughout this manual
zAruba Wireless Networks support and service information
Related Documents
The following items are part of the complete documentation for the Aruba system:
zAruba 50 Installation Guide (Part No. 050007A, May 2003)
zAruba 5000 Installation Guide (Part No. 0500001A, May 2003)
zAruba AirOS v1.0 User’s Guide (Part No. 050002A, May 2003)

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Text Conventions
The following conventions are used throughout this manual to emphasize important concepts:
TABLE 1Text Conventions
Type Style Description
Italics This style is used to emphasize important terms and to mark the
titles of books.
System items This fixed-width font depicts the following:
zSample screen output
zSystem prompts
zFilenames, software devices, and certain commands when men-
tioned in the text.
Commands In the command examples, this bold font depicts text that the user
must type exactly as shown.
<Arguments> In the command examples, italicized text within angle brackets rep-
resents items that the user should replace with information appropri-
ate to their specific situation. For example:
# send <text message>
In this example, the user would type “send” at the system prompt
exactly as shown, followed by the text of the message they wish to
send. Do not type the angle brackets.
[ Optional ] In the command examples, items enclosed in brackets are optional.
Do not type the brackets.
{ Item A | Item B } In the command examples, items within curled braces and separated
by a vertical bar represent the available choices. Enter only one
choice. Do not type the braces or bars.

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Contacting Aruba Wireless Networks
**Information Pending

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Introduction 1
Chapter 1
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CHAPTER 1
Introduction
The Aruba 50 is part of a comprehensive wireless network solution. The device works in con-
junction with the Aruba 5000 WLAN Switch and can act as a wireless access point or air mon-
itor.
As a wireless access point, the Aruba 50 provides transparent, secure, high-speed data com-
munications between wireless network devices (fixed, portable, or mobile computers with
IEEE 802.11a or IEEE 802.11b wireless adapters) and the wired LAN.
As a wireless air monitor, a uniquely Aruba feature, the Aruba 50 enhances wireless networks
by collecting statistics, monitoring traffic, detecting intrusions, enforcing security policies,
balancing wireless traffic load, self-healing coverage gaps, and more.
Product Features
zWireless dual-band transceiver
zDual, omnidirectional antennas for reception diversity
zProtocol-independent networking functionality
z802.11a – up to 54 Mbps data rate per channel: offers a high data rate and reliable wireless
connectivity
z802.11b – 11 Mbps data rate per channel: provides an alternative to wired LANs that can
dramatically cut costs
zCompatible with IEEE 802.3af Power Over Ethernet (POE)
zSeamless connectivity to wired LANs augment existing networks quickly and easily
zCan be centrally managed, configured, and upgraded through the Aruba WLAN Switch
to take advantage of network changes and security improvements
IEEE
802.11b wireless adapters) and the wired LAN.
802.11b – 11 Mbps data rate per channel: provides an alternative to wired LANs that can
dramatically cut costs
Compatible with IEEE 802.3af Power Over Ethernet (POE)
Seamless connectivity to wired LANs augment existing networks quickly and easily
Can be centrally managed, configured, and upgraded through the Aruba WLAN Switch
to take advantage of network changes and security improvements
transceiver

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Ethernet Compatibility
The Aruba 50 attaches to 10/100 Mbps Ethernet (FE) LAN segments that utilize
10Base-T/100Base-TX (twisted-pair) wiring. The device appears as an Ethernet node and
performs a routing function by moving packets between the wired LAN and remote worksta-
tions on the wireless infrastructure.
Radio Characteristics
For IEEE 802.11a operation, the Aruba 50 uses a radio modulation technique known as
Orthogonal Frequency Division Multiplexing (OFDM), and a shared collision domain
(CSMA/CA). It operates in the 5GHz Unlicensed National Information Infrastructure
(UNII) band. Data is transmitted over a half-duplex radio channel operating at up to 54
Megabits per second (Mbps), and with a maximum operating range up to 503 m (1650 ft.).
Power Over Ethernet
The Aruba 50 supports the IEEE 802.3af standard for Power Over Ethernet (POE). With this
feature, the Aruba 50 can accept electrical power from a compatible POE-capable device to
which it is connected, directly over the FE cable. POE eliminates the need to provide separate
power outlets in environments that are difficult or undesirable to wire for electricity.
The Aruba 50 supports POE only when the FE port is connected to an IEEE 802.3af compli-
ant device (such as the Aruba 5000 WS-5032 Line Card).
Power Over Ethernet
The Aruba 50 supports the IEEE 802.3af standard for Power Over Ethernet (POE). With this
feature, the Aruba 50 can accept electrical power from a compatible POE-capable device to
which it is connected, directly over the FE cable. POE eliminates the need to provide separate
power outlets in environments that are difficult or undesirable to wire for electricity.
The Aruba 50 supports POE only when the FE port is connected to an IEEE 802.3af compliant
device (such as the Aruba 5000 WS-5032 Line Card).

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Physical Description
Package Checklist
The Aruba 50 package includes:
zOne Aruba 50 wireless access point
zOne mounting kit
zOne Serial & Power Over Ethernet (SPOE) adapter
zOne AC power adapter (3.3 VDC, 4 A)
zNon-slip rubber foot-pads
zAssorted documentation
Inform your supplier if there are any incorrect, missing or damaged parts. If possible, retain
the carton, including the original packing materials. Use them again to repack the product in
case there is a need to return it.
To p Pa n el
FIGURE 1-1 Aruba 50 Top Panel

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Dual, omnidirectional Antennas for Wireless Communications (on sides)
The antennas swivel and should be oriented vertically (straight up and down) away from the
chassis for best performance.
Air Vents (on sides)
These vents promote proper air circulation for cooling the device. Do not allow these vents to
be obstructed by mounting equipment, network cables, or any other material.
Indicator LEDs
During operation, the Aruba 50 LEDs provide the following information:
TABLE 1-1 Aruba 50 LEDs
LED State Description
Ready Off The device is off or initializing.
Green The device has passed self-test and is operating.
Flashing The device is running a self-test or loading new software. If the
condition persists for more than one minute, refer to the trou-
bleshooting information in Appendix A.
LAN Off No link on the FE port on back of the device.
Green Link detected on the FE port.
Flashing Transmitting or receiving data across the FE port. Flashing
rate is proportional to your network activity.
.A Off The 802.11a wireless interface is disabled or down.
Green The device is operating as an 802.11a access point.
Flashing The device is operating as an 802.11a air monitor.
.B Off The 802.11b wireless interface is disabled or down.
Green The device is operating as an 802.11b access point.
Flashing The device is operating as an 802.11b air monitor.
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.B Off The 802.11b wireless interface is disabled or down.
Green The device is operating as an 802.11b access point.
Flashing The device is operating as an 802.11b air monitor.

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Rear Panel
FIGURE 1-2 Aruba 50 Rear Panel
Kensington Security Slot
This slot is compatible with a Kensington MicroSaver Security Cable (not included) which
can be used to prevent the unauthorized removal of the Aruba 50 from its installed location.
To secure the Aruba 50, wrap a security cable around an immovable object, insert the cable’s
lock into the Kensington Security Slot, and turn the key.
Console Port
This port has a 9-pin, female serial connector. It is used primarily to connect a terminal during
initial setup of the Aruba 50. See Appendix B for port details.
Using the included SPOE adapter, this port can also be connected directly to an FE port on an
Aruba WLAN Switch that supports SPOE (see “Power Over Ethernet” on page 2). This
direct connection provides extra maintenance options during normal operation.
FE Port
This port attaches the Aruba 50 to 10Base-T/100Base-TX (twisted-pair) Ethernet LAN seg-
ments. The port automatically adjusts MDI/MDX to accept either straight-through or cross-
over cables. See Appendix B for port details.
This port also supports POE (see “Power Over Ethernet” on page 2). When POE is used, a
straight-through cable is required.
DC Power Socket
This socket is used to connect the included AC power adapter. If POE is being used to supply
power to the Aruba 50, the power adapter is not necessary.
Mounting Slots (on bottom)
The keyhole-shaped slots on the bottom of the chassis are used to mount the Aruba 50.
®
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Setup & Installation 7
Chapter 2
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CHAPTER 2
Setup & Installation
This chapter covers the following topics:
zRequirements for installing the Aruba 50
zSupported network topology options
zInitial setup of the Aruba 50
zPhysical mounting of the device
zConnecting the required cables
zTesting the installation
Requirements
Before you install the Aruba 50, you must have the following:
zAn operational Aruba WLAN Switch with a valid IP route to the LAN segment to which
the access point or air monitor will be connected.
zAn appropriate physical location for the new access point or air monitor.
We recommend an up-to-date site survey to help determine the optimal location for your
Aruba 50. See your Aruba AirOS Software Guide for instructions on using the Aruba
WLAN Switch’s built-in planning tools.
zClient devices with 802.11a or 802.11b compliant wireless Ethernet adapters with
TCP/IP compatible protocol installed.
802.11b compliant wireless Ethernet adapters with

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zOne of the following power sources for the access point or air monitor:
zAn AC power outlet rated at 100~240 V, 50~60 Hz.
zPower Over Ethernet (POE) capability on the device to which the Aruba 50 is con-
nected (see “Power Over Ethernet” on page 2).
NOTE—When installing the Aruba 50 in plenums or air-handling spaces, as described in
NEC (2002) Article 300.22(C), the device must be powered using POE, and not the
included AC power adapter.
Select a Network Topology
The Aruba 50 can be installed in your network using the following topologies:
FIGURE 2-1 Aruba 50 Topology Options

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Direct Serial & Power Over Ethernet (SPOE) to the Aruba WLAN Switch (recom-
mended)
In this topology, both the console and 10/100 Mbps Ethernet (FE) ports on the Aruba 50 are
connected to the included SPOE adapter. An 8-conductor, Category 5 UTP, straight-through
FE cable connects the adapter directly to the Aruba WLAN Switch with no intervening hubs,
routers, or other network equipment. The network port on the Aruba WLAN Switch must
include optional SPOE capability (see “Power Over Ethernet” on page 2).
This topology provides the following features:
z10/100 Mbps Ethernet connectivity
zElectrical power through the FE cable
zSerial console connectivity through the FE cable
zConvenient initial setup through the Aruba WLAN Switch management interface either
before or after physical installation of the Aruba 50
zExtra console maintenance options during normal operation
POE connection through the LAN
In this topology, the Aruba 50 is connected to the LAN through a hub or switch that is POE
compatible (see “Power Over Ethernet” on page 2). An 8- or 4-conductor, Category 5 UTP,
straight-through FE cable is required. Initial setup requires a local serial console.
This topology provides the following features:
z10/100 Mbps Ethernet connectivity (depending on the connecting port)
zElectrical power through the FE cable
zVersatile placement of the Aruba WLAN Switch and Aruba 50s within the network
Connection to a non-POE network port on the Aruba WLAN Switch or other net-
work device
In this topology, the Aruba 50 is connected to the Aruba WLAN Switch either directly or
through the LAN. An 8- or 4-conductor, Category 5 UTP, straight-through or crossover FE
cable may be used. Initial setup requires a local serial console. Electrical power is supplied
using the included AC power adapter.
This topology provides the following features:
z10/100 Mbps Ethernet connectivity (depending on the connecting port)
zVersatile placement of the Aruba WLAN Switch and Aruba 50s within the network
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Perform Initial Setup
The Aruba 50 requires some initial configuration before it will operate. The method used for
connecting to the Aruba 50 for initial setup depends on your intended network topology (see
Figure 2-1 on page 8).
Direct SPOE to the Aruba WLAN Switch
Use this procedure when connecting the Aruba 50 directly to an SPOE-compatible network
port on the Aruba WLAN Switch (see “Power Over Ethernet” on page 2). SPOE provides
10/100 Mbps Ethernet, serial connection, and power over one cable.
NOTE—If connecting the Aruba 50 through the LAN or to a non-SPOE network port on
the Aruba WLAN Switch, see the instructions on page 11.
Connect the included SPOE adapter to the Aruba 50.
Connect the adapter’s 9-pin serial connector to the Console port on the back of the
Aruba 50.
Connect the adapter’s male RJ-45 plug to the FE port on the back of the Aruba 50.
Connect the Aruba 50 to the Aruba WLAN Switch.
The connection between the Aruba 50 and the Aruba WLAN Switch requires an 8-conduc-
tor, Category 5 UTP, straight-through FE cable with RJ-45 connectors (see Appendix B for
port specifications).
Connect one end of the FE cable directly to the RJ-45 socket on the SPOE adapter that
was attached to the Aruba 50 in the previous step.
Connect the other end of the FE cable directly to an available SPOE network port on the
Aruba WLAN Switch.
NOTE—The Aruba 50 must be connected to the Aruba WLAN Switch without any inter-
vening hubs, routers, or other networking equipment.
Telnet to the Aruba WLAN Switch Serial-Over-Ethernet (SOE) interface.
Run the Telnet client on your management workstation and connect to theAruba WLAN
Switch management IP address using logical port 2300. The connection command may vary
depending on the specific software used, but commonly appears as follows:
telnet <switch management IP address> 2300
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