Aruba AP-120 Series Bedienungsanleitung

Aruba AP-120 Series Indoor Access Point

Installation Guide

0510457-06 | June 2008 1

About the Aruba AP-120 Series Access Points

The Aruba AP-120 series of wireless access points support the imminent IEEE 802.11n (currently draft

2.0) standard for high-performance WLAN. These access points use MIMO (Multiple-in, Multiple-out)

technology and other high-throughput mode techniques to deliver high-performance, pre-802.11n

2.4 GHz and 5 GHz functionality while simultaneously supporting existing 802.11a/b/g wireless services.

The AP-120 series access points are available in versions with single or dual radios and with integrated

antennas or RP-SMA interfaces that support detachable antennas. The AP-120 series access points work

only in conjunction with an Aruba Mobility Controller.

The Aruba AP-120 series access points provide the following capabilities:

zWireless transceiver

zProtocol-independent networking functionality

zIEEE 802.11a/b/g or 802.11n operation as a wireless access point

zIEEE 802.11a/b/g or 802.11n operation as a wireless air monitor

zCompatibility with IEEE 802.3af PoE as well as high power over Ethernet pre-standards

(PoE + / 802.3at)

zCentral management configuration and upgrades through an Aruba Mobility Controller

zUpgrade of AP-12x a/b/g models to 802.11n (draft) compliance through a controller license

Figure 1 AP-120 Series Access Points

CAUTION

The AP-12x a/b/g APs require ArubaOS 3.3.1.9 (or later). If you are running an earlier version of

ArubaOS, upgrade before installing the APs.

NOTE

When installing the license to upgrade your AP-12x a/b/g AP to 802.11n compliance, you must

reboot the AP for the upgrade to take effect.

ap12_001

AP-120/124

(3 x RP-SMA interfaces for detachable antennas)

AP-121/125

(3 x integrated dual-band antennas)

2Aruba AP-120 Series Indoor Access Point | Installation Guide

Package Contents

zAP-120 series access point

zInstallation guide (this document)

Before You Begin

WLAN Planning

Determine how many Aruba APs are needed for your wireless network deployment and where they will

be installed. You can easily accomplish this planning using Aruba’s automated RF Plan site-survey

software (available separately). This process is considered WLAN or RF planning and should have been

completed during the master Aruba Mobility Controller installation and configuration. In typical Aruba

installations, the mobility controllers are configured and installed before the APs.

For WLAN planning assistance, refer to the Indoor Access Points: Site Survey and Planning Pre-

Deployment Guide and the RF Plan Installation and User Guide.

Pre-Installation Network Requirements

After WLAN planning is complete and the appropriate products and their placement have been

determined, the Aruba Mobility Controller(s) must be installed and initial setup performed before the

Aruba Access Points are deployed.

For initial setup of the Mobility Controller, refer to the ArubaOS Quick Start Guide for the software

version installed on your controller.

Pre-Installation Checklist

Before installing your AP-120 series access point, be sure that you have the following:

zFor the AP-120/AP-124: External antennas as specified in the network deployment plan

zCAT5 UTP cable of required length

zOne of the following power sources:

IEEE 802.3af-compliant Power over Ethernet (PoE) source

Supports full functionality for AP-120/AP-121; supports reduced functionality for AP-124/AP-125

IEEE Power Over Ethernet + (PoE+) source output at 56 Volts @ 350 mA

The POE source can be any power source equipment (PSE) controller or midspan PSE device

Aruba AP AC-DC adapter kit (sold separately)

zAruba Mobility Controller provisioned on the network:

Layer 2/3 network connectivity to your access point

One of the following network services:

zAruba Discovery Protocol (ADP)

NOTE

Inform your supplier if there are any incorrect, missing, or damaged parts. If possible, retain the

carton, including the original packing materials. Use these materials to repack and return the unit to

the supplier if needed.

NOTE

Additional mounting kits for use with the AP-120 series access points are sold separately. Contact

your Aruba sales representative for details.

Aruba AP-120 Series Indoor Access Point | Installation Guide 3

zDNS server with an “A” record

zDHCP Server with vendor-specific options

Summary of the Setup Process

Successful setup of an AP-120 series access point consists of five tasks, which must be performed in

this order:

1. Verify pre-installation connectivity.

2. Identify the specific installation location for each AP.

3. Install each AP.

4. Verify post-installation connectivity.

5. Configure each AP.

Verifying Pre-Installation Connectivity

Before you install APs in a network environment, make sure that the APs will be able to locate and

connect to the Mobility Controller when powered on.

Specifically, you must verify the following conditions:

zWhen connected to the network, each AP is assigned a valid IP address

zAPs are able to locate the Mobility Controller (Mobility Controller Discovery)

Refer to the ArubaOS Quick Start Guide for instructions on locating and connecting to the Mobility

Controller.

Identifying Specific Installation Locations

NOTE

It is important that you verify the items listed under Pre-Installation Checklist before you attempt to

set up and install an AP-120 series AP.

NOTE

Aruba Networks, in compliance with governmental requirements, has designed the AP-120 series

access points so that only authorized network administrators can change the settings. For more

information about AP configuration, refer to the ArubaOS Quick Start Guide and Aruba OS User

Guide.

CAUTION

Access points are radio transmission devices and as such are subject to governmental regulation.

Network administrators responsible for the configuration and operation of access points must

comply with local broadcast regulations. Specifically, access points must use channel assignments

appropriate to the location in which the access point will be used.

CAUTION

RF Radiation Exposure Statement: This equipment complies with FCC RF radiation exposure

limits. This equipment should be installed and operated with a minimum distance of 13.78 inches

(35 cm) between the radiator and your body for 2.4 GHz and 5 GHz operations. This transmitter

must not be co-located or operating in conjunction with any other antenna or transmitter. When

operated in the 5.15 to 5.25 GHz frequency range, this device is restricted to indoor use to reduce

the potential for harmful interference with co-channel Mobile Satellite Systems.

4Aruba AP-120 Series Indoor Access Point | Installation Guide

You can mount the AP-120 series access point on a wall or on the ceiling. Use the AP placement map

generated by Aruba’s RF Plan software application to determine the proper installation location(s).

Each location should be as close as possible to the center of the intended coverage area and should be

free from obstructions or obvious sources of interference. These RF absorbers/reflectors/interference

sources will impact RF propagation and should have been accounted for during the planning phase and

adjusted for in RF plan.

Unidentified Known RF Absorbers/Reflectors/Interference Sources

Identifying known RF absorbers, reflectors, and interference sources while in the field during the

installation phase is critical. Make sure that these sources are taken into consideration when you attach

an AP to its fixed location.

RF absorbers include:

zCement/concrete: Old concrete has high levels of water dissipation, which dries out the concrete,

allowing for potential RF propagation. New concrete has high levels of water concentration within

the concrete, blocking RF signals.

zNatural Items: Fish tanks, water fountains, ponds, and trees

zBrick

RF reflectors include:

zMetal Objects: Metal pans between floors, rebar, fire doors, air conditioning/heating ducts, mesh

windows, blinds, chain link fences (depending on aperture size), refrigerators, racks, shelves, and

filing cabinets

zDo not place an AP between two air conditioning/heating ducts. Make sure that APs are placed

below ducts to avoid RF disturbances.

RF interference sources include:

zMicrowave ovens and other 2.4 or 5 GHz objects (such as cordless phones)

zLunch rooms and call centers with cordless headsets

Installing the AP

Using the Integrated Wall-Mounting Slots

The keyhole-shaped slots on the back of the AP can be used to attach the device upright to an indoor

wall or shelf. When you choose the mounting location, allow additional space at the right of the unit for

cables.

1. At the mounting location, install two screw on the wall or shelf, 1 7/8 inches (4.7 cm) apart. If you

are attaching the device to drywall, Aruba recommends using appropriate wall anchors (not

included).

NOTE

Service to all Aruba Networks products should be performed by trained service personnel only.

NOTE

For product dimensions, see Product Specifications in this guide. Allow 2 inches (5 cm) of additional

space at the right side of the installed unit for cables, and make sure enough space is available for

antenna articulation.

Aruba AP-120 Series Indoor Access Point | Installation Guide 5

2. Align the mounting slots on the rear of the AP over the screws and slide the unit into place (see

Figure 2).

Figure 2 Installing the AP-120 series Access Point on a Wall

3. On the AP-121 or AP-125, orient the antennas. For best performance, swivel the antennas so that

they are oriented vertically, preferably in the same plane, parallel to the wall (see Figure 3).

Figure 3 Antenna Orientation on a Wall-Mounted AP-121/AP-125

On the AP-120 or AP-124, install the external antennas according to the manufacturer’s instructions,

and connect the antennas to the antenna interfaces on the AP (see Figure 4).

Figure 4 Antenna Interfaces on the AP-120/AP-124

6Aruba AP-120 Series Indoor Access Point | Installation Guide

Using the Integrated Ceiling Tile Rail Slots

The snap-in tile rail slots on the rear of the AP can be used to securely attach the device directly to a 15/

16” wide, standard ceiling tile rail.

1. Pull the necessary cables through a prepared hole in the ceiling tile near where the AP will be

placed.

2. If necessary, connect the console cable to the console port on the back of the AP.

3. Hold the AP next to the ceiling tile rail with the ceiling tile rail mounting slots at approximately a 30-

degree angle to the ceiling tile rail (see Figure 5). Make sure that any cable slack is above the ceiling

tile.

Figure 5 Orienting the Ceiling Tile Rail Mounting Slots

4. Pushing toward the ceiling tile, rotate the AP clockwise until the device clicks into place on the

ceiling tile rail.

5. On the AP-121 or AP-125, orient the antennas. For best results, rotate the antennas so that they are

vertical (perpendicular to the body of the AP) (see Figure 6).

Figure 6 Antenna Orientation on a Ceiling-Mounted AP-121/AP-125

On the AP-120 or AP-124, install the external antennas according to the manufacturer’s instructions,

and connect the antennas to the antenna interfaces on the AP (see Figure 4).

CAUTION

Make sure the AP fits securely on the ceiling tile rail when hanging the device from the ceiling,

because poor installation could cause it to fall onto people or equipment.

ap1

Aruba AP-120 Series Indoor Access Point | Installation Guide 7

Connecting Required Cables

Install cables in accordance with all applicable local and national regulations and practices.

Ethernet Ports

The RJ45 Ethernet ports (ENET0 and ENET1) support 100/1000Base-T auto-sensing MDI/MDX

connections. Use these ports to connect the AP to a twisted pair Ethernet LAN segment or directly to an

Aruba Mobility Controller. Use a 4- or 8-conductor, Category 5 UTP cable up to 100 m (325 feet) long.

The 100/1000 Mbps Ethernet ports are on the bottom of the AP. These ports have RJ-45 female

connectors with the pin-outs shown in Table 1.

Serial Console Port

The serial console port allows you to connect the AP to a serial terminal or a laptop for direct local

management. This port is an RJ-45 female connector with the pinouts described in Table 2. Connect this

port in one of the following ways:

zConnect it directly to a terminal or terminal server using an Ethernet cable.

zUse a modular adapter to convert the RJ-45 (female) connector on the AP to a DB-9 (male)

connector, and connect the adapter to a laptop using an RS-232 cable. See Figure 7 for connector

details of the adapter.

NOTE

Aruba 12x APs are intended only for installation in Environment A as defined in IEEE 802.3.af, Power

over Ethernet. All interconnected equipment must be contained within the same building, including

the interconnected equipment’s associated LAN connections.

Table 1 Connector for Ethernet Ports ENET0 and ENET1

Connector Pin Signal

Name GE Connection FE

Connection PoE

1 BI_DA+ Bi-directional pair A+ RX+ POE negative

2 BI_DA– Bi-directional pair A– RX– POE negative

3 BI_DB+ Bi-directional pair B+ TX+ POE positive

4 BI_DC+ Bi-directional pair C+ Spare pair POE positive

5 BI_DC– Bi-directional pair C– Spare pair POE positive

6 BI_DB– Bi-directional pair B– TX– POE positive

7 BI_DD+ Bi-directional pair D+ Spare pair POE negative

8 BI_DB– Bi-directional pair D– Spare pair POE negative

Table 2 Connector for Serial Console Port

Connector Pin Signal Name Function

3TXD Transmit

4GND Ground

5GND Ground

6RXD Receive

Pins not listed are not connected.

8Aruba AP-120 Series Indoor Access Point | Installation Guide

Figure 7 RJ-45 (Female) to DB-9 (Male) Modular Adapter Conversion

Power Connection

The AP-120 series AP has a single 5V DC power jack socket to support powering through an AC-to-DC

mains electric power adapter.

Connecting a Security Cable

To provide added security for the AP-121 or AP-125, you can attach a security cable to the back of the

unit (see Figure 8).

Figure 8 Security Lock Connection

Verifying Post-Installation Connectivity

The integrated LEDs on the AP can be used at this point to verify that the AP is receiving power and

initializing successfully (see Table 3). Refer to the ArubaOS Quick Start Guide for further details on

verifying post-installation network connectivity.

Table 3 AP-120 Series LED Meanings

LED Color/State Meaning

PWR Green steady Power on, device ready

Green flashing System initializing

Red steady System failed to initialize, contact TAC

ENET 0

(100/1000 Mbps)

Green/Amber off No link

Green on 1000 Mbps link

Amber on 100 Mbps link

Green/amber blinking Data activity

ENET 1

(100/1000 Mbps)

Green/Amber off No Link

Green on 1000 Mbps link

Amber on 100 Mbps link

Green/amber blinking Data activity

11A/N Amber Wireless link is legacy 11a

RJ-45 DB-9

Internal

Connections

TxD

GND

RxD

TxD

GND

RxD

RJ-45 Female

Pin-Out

Direction

Input

Output

DB-9 Male

Pin-Out

TxD

RxD

Ground

Direction

Input

Output

Aruba AP-120 Series Indoor Access Point | Installation Guide 9

Configuring the AP-12x

AP Provisioning/Reprovisioning

Provisioning parameters are unique to each AP. These local AP parameters are initially configured on

the Mobility Controller which are then pushed out to the AP and stored on the AP itself. Aruba

recommends that provisioning settings be configured via the ArubaOS Web UI only. Refer to the

ArubaOS User Guide for complete details.

AP Configuration

Configuration parameters are network or controller specific and are configured and stored on the

Mobility Controller. Network configuration settings are pushed out to the AP(s) but remain stored on

the Mobility Controller.

Configuration settings can be configured via the ArubaOS Web UI, ArubaOS CLI, or Aruba MMS. Refer

to their respective guides for further details: the ArubaOS User Guide or Aruba Mobility Management

System User Guide.

Product Specifications

Mechanical

zDimensions (antenna stowed) (HxWxD):

4.9 inches x 5. 13 inches x 2 inches

12.4 cm x 13 cm x 5.1 cm

zWeight: 15 oz/0.42 kg

zShipping Dimensions:

9.5 inches x 7.25 inches x 4.5 inches

24.1 cm x 18.4 cm x 11.4 cm

zTemperature:

Operating: 0ºC to 50ºC (32ºF to 122ºF)

Storage: –10ºC to 70ºC (14ºF to 158ºF)

zRelative Humidity: 5% to 95% non-condensing

Green Wireless link is 11n 5 Ghz band

Red Only two transmit chains are available, typically due to power

supply constraints (only applies if you are using ArubaOS

3.3.0 to 3.3.1.16 or 3.3.2.4)

11B/G/N Amber Wireless link is legacy 11b or 11g

Green Wireless link is 11n 2.4 Ghz band

Red Only two transmit chains are available, typically due to power

supply constraints (only applies if you are using ArubaOS

3.3.0 to 3.3.1.16 or 3.3.2.4)

Table 3 AP-120 Series LED Meanings

LED Color/State Meaning

NOTE

During normal operation, the temperature of the base of the AP-12x can approach 80ºC (176ºF).

This is within the expected operating temperature range.

10 Aruba AP-120 Series Indoor Access Point | Installation Guide

zAltitude: 8,000 ft @ 28ºC (82.4ºF)

zMounting: Wall, ceiling, or desktop mountable

zAntennas:

3 integrated articulating dual-band antenna elements (AP-121, AP-125)

3 RP-SMA interfaces for external antennas (AP-120, AP-124)

zVisual Status Indicators (LEDs): See Table 3

Electrical

Ethernet:

2 x 100/1000 Base-T auto-sensing Ethernet RJ-45 Interfaces

MDI/MDX

IEEE 802.3 (10Base-T), IEEE 802.3u (100Base-T). IEEE 802.3ab (1000Base-T)

Power over Ethernet (IEEE 802.3af compliant), 48V DC/200mA (see Table 1 for pin

configuration)

zPower:

5 VDC power interface, supports powering through an AC-to-DC mains electric power adapter

POE support on Ethernet ports:

– 802.3af-compliant POE sourcing devices

– POE+ (56 V @ 350 mA)

Wireless LAN

zNetwork Standards: IEEE 802.11b, IEEE 802.11g, IEEE 802.11a, and IEEE 802.11n (draft)

zAntenna Type:

Integrated 802.11a/b/g/n omni-directional high-gain antenna

Detachable 802.11a/b/g/n omni-directional high-gain antenna

zAntenna Gain (Integrated Antennas):

2.4 – 2.5 GHz/3.2 dBi (max)

5.180 – 5.825 GHz/5.2 dBi (max)

zRadio Technology:

Orthogonal Frequency Division Multiplexing (OFDM)

Direct Sequence Spread Spectrum (DSSS)

zRadio Modulation Type:

802.11b - CCK, BPSK, QPSK

802.11g - CCK, BPSK, QPSK,16-QAM, 64-QAM

802.11a - BPSK, QPSK,16-QAM, 64-QAM

802.11n draft 2.0

zMedia Access Control: CSMA/CA with ACK

NOTE

If a power adapter other than the one provided by Aruba Networks is used in the US or

Canada, it should be cULus (NRTL) Listed, with an output rated 5 VDC, minimum 4A,

marked “LPS” or “Class 2,” and suitable for plugging into a standard power receptacle in the

US and Canada.

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