3Com 8500 Bedienungsanleitung

Quick Start Guide

Wireless LAN Access Points

8250/8500/8750

3CRWE825075A

3CRWE850075A

3CRWE875075A

The 3Com Wireless LAN Access Points 8250, 8500, and 8750 offer enterprise network standard based security

and complete centralized management, with flexible and expansive connectivity and scalability. They extend

networks and boost productivity for centrally managed enterprises requiring scalable security solutions.

NOTE: This product must be installed by a professional technician/installer.

Caution: Do not connect a telephone cable into the Console port; doing so can cause serious

damage to the access point.

LEDs

Reset

button Console port

Ethernet port

Access Point 8500 Access Point 8250/8750

1 Before You Start

oMake sure that you have the following items ready for the installation:

o3Com Access Point 8250, 8500, or 8750

oStandard detachable antennas (Access Point 8250 or 8750)

o3Com installation CD

oEthernet category 5 straight cables (8-wire)

oFor wall-mount installations you will need the following items:

Mounting plate

Mounting screws

Plastic anchors for drywall mounting

o3Com Integrated Power-over-Ethernet power supply and power cord

oTo use the Web configuration management system, you need a computer running one of the

following operating systems and one of the following browsers:

oOperating Systems: Windows 98, Windows ME, Windows NT 4.0 (with the latest

service pack), Windows 2000, or Windows XP.

oBrowsers: Internet Explorer 5.0 or later. (Internet Explorer 5.5 is available on the

installation CD.)

2 Prepare for Installation

It is advisable to connect the power and check the Ethernet cables and LEDs before installing the unit in a hard-

to-reach location.

1Observe the following power requirements:

The access point complies with the IEEE 802.3af power-over-Ethernet standard. It receives

power over category 5 straight cable. Installation requires the use of either the 3Com power

supply provided or IEEE 802.3af compliant power supply equipment (output power rated

48 V DC @ 350 mA maximum). Such equipment must be safety certified according to UL,

CSA, IEC or other applicable national or international safety requirements for the country of

use. All references to the power supply refer to equipment that meets these requirements.

Because the power supply plug is the only means of disconnecting the access point from

power, make sure the power outlet is accessible.

The power supply can be located indoors at any point between the access point and the LAN

access port where an accessible power outlet exists.

2Decide where to place the access point.

oMounted on a wall on a stud (or other hard surface)

oMounted on to drywall

oPlaced on a flat surface

The location should be elevated and centrally located relative to users on your network. Ceiling mounting is not

recommended.

3Record the access point MAC address in a safe place before the access point is installed in a

hard-to-reach location. The MAC address is printed on the back of the access point housing.

4Access Point 8250 or 8750: Carefully unpack the standard detachable antennas. Screw the

antennas on to the SMA connectors and hand-tighten them. After network startup, you may

need to adjust the antennas to fine-tune coverage in your area.

NOTE: Regulatory restrictions dictate that when the access point is operational a minimum body-

to-antenna distance of 1 meter (3 feet) must be maintained.

The installation CD includes the User Guide, which contains more detailed information on planning, installing

and configuring the device. Additional tools and utilities are provided to assist with the management of your

network. See “Documentation and Software Utilities” on page 6 for instructions.

3 Connect the Power

The access point complies with the IEEE 802.3af power-over-Ethernet standard. It receives power over a

standard category 5 straight (8-wire) Ethernet cable. There are two ways to supply power to the access point

(refer to the illustration below):

oUse the supplied 3Com Integrated Power-over-Ethernet power supply. In this case, you need

to supply a second Ethernet cable to connect to the wired LAN.

oConnect the access point directly to your own power-over-Ethernet hub or switch, which must

also comply with the IEEE 802.3af standard.

Using the Power Supply

The power supply can be located at any point between the access point and the LAN access port, wherever a

convenient power outlet exists. If you supply your own Ethernet cable for connecting power, be sure that it is

standard category 5 straight-through (8-wire) cable that has not been altered in any way. Use of nonstandard

cable could damage the access point.

Refer to the illustration above, and follow these steps:

1Connect one end of the Ethernet cable to the Ethernet port on the access point.

2Connect the other end of the Ethernet cable to the port labeled To Access Point on the power

supply.

3Connect the power cord to the power supply and plug the cord into a power outlet.

CAUTION: Do not handle the antenna tips, especially after they are connected to the access

point, as this could lead to electrostatic discharge (ESD), which could damage the equipment.

"To Access Point"

"To Hub/Switch"

Using the Power Supply Using A Power-over-Ethernet

LAN Port

4To link the access point to your Ethernet network, plug one end of another Ethernet cable into

the port labeled To Hub/Switch on the power supply, and plug the other end into a LAN port

(on a hub or in a wall).

Using a Power-Over-Ethernet LAN Port

If your LAN equipment complies with the IEEE 802.3af power-over-Ethernet standard, you can connect the

access point directly to a LAN port. For example, the illustration above right shows a connection through a

3Com Ethernet Power Supply to a 3Com SuperStack®Switch.

4 Check the LEDs

When power is connected, the access point LEDs light. The illustration and the following table describe the

LEDs and their functions.

5 Wall Mount Installation

1Install the mounting plate as shown in the following illustration, on either a stud (or other

hard wall surface), or onto drywall.

CAUTION: To avoid damaging network equipment, make sure that the cables are connected

from access point to power supply to LAN as shown and described above.

Name Description

Radio LED blinks red to indicate radio activity. Faster blinking

indicates more activity.

Power LED lights green when operational code is running.

Reset

Button

Press this button in for 15 seconds to restore the factory

defaults.

Ethernet LED lights yellow when Ethernet link is established. LED

blinks to indicate activity on the Ethernet. Faster blinking

indicates more activity.

Radio LED blinks red to indicate radio activity. Faster blinking

indicates more activity. This LED is only active when a

second radio is installed.

Reset

Button

If installing into drywall, use

3 plastic anchors and 3 screws.

If installing into a stud or other

secure vertical surface, use 2 screws.

oAllow for a clearance of at least 25 cm (10 Inches) between the ceiling and the top of the

mounting plate.

oMake sure that “UP” or “A” is oriented toward the top of the bracket, and align the

mounting plate screw holes vertically.

oFor installation on a wall stud, install the top screw into the stud, as shown at left in the

illustration, and then vertically align the mounting plate before installing the

bottom screw.

oFor installation on to drywall, mark three screw holes using the mounting plate as a

template for vertical alignment, as shown at right in the illustration above.

oUse a 5-mm (3/16-in.) drill bit if using the plastic anchors provided.

oFor drywall mounts, you can route the cable through either a side or center opening for a

seamless appearance using one of the methods illustrated below. Alternatively, you can

simply attach the Ethernet cable to the side of the unit, allowing it to trail along the wall.

oIf you have routed the Ethernet cable through the center opening, secure the cable on the

hook located on the mounting plate as shown in the illustration below.

2Connect the Ethernet cable to the Ethernet port on the access point.

3Position the access point at an angle to the mounting plate bayonet connection and turn the

unit clockwise until it snaps into place, as shown below.

6 Flat Surface Installation

1Find a clean and dry surface that is elevated enough to provide good reception and coverage

for the network. Do not place the access point on a metal surface.

2Make sure to choose a location where the access point will not be disturbed.

3Connect the Ethernet cable into the Ethernet port.

4Set the access point down on a flat, level surface.

Hold the access point at an angle. Turn

clockwise to engage and secure it on

the mounting plate.

Leave at least 13 cm (5 in.) length.

Ethernet cable may be routed through

center opening or through the side.

Center

opening

Side opening

Hook for securing

the cable

7 Antenna Adjustment (Access Point 8250/8750)

Position the antennas so that they turn away from the access point at approximately a 45-degree angle. Your

particular location might require additional antenna adjustment.

8 Documentation and Software Utilities

The installation CD includes documentation and software utilities to help you set up and administer the wireless

components of your network. To view product documentation, select View the Documentation from the CD

Startup Menu and then select the item you wish to view. To install utilities, select Tools and Utilities from the

CD Startup Menu. Select the items you wish to install and follow the onscreen instructions. The software Tools

and Utilities include:

o3Com Wireless Infrastructure Device Manager. Use this tool to discover access points and

select devices for administrative changes. Uninstall any previous versions before installing

this version.

o3Com 3CDaemon Server Tool. This tool can act in four different capacities:

oAs a TFTP Server, necessary for firmware upgrades, and backup and restore functions.

Use this option if you do not have a TFTP server set up.

oAs a SysLog Server, which is necessary to view SysLog messages.

oAs an optional TFTP Client.

oAs an optional FTP Server.

o3Com Network Supervisor. The 3Com Network Supervisor (3NS) graphically discovers,

maps, and displays network links and IP devices, including 3Com wireless access points. It is

not required for access point management.

o3Com Site Survey Tool. This utility assists in selecting the best location for your access point

before installing the device permanently. Use the Site Survey Tool to determine if the

intended mounting locations will provide adequate coverage with good signal strength and

quality.

oInternet Explorer 5.5. This browser is included for your those who do not have a

suitable browser.

CAUTION: Do not handle the antenna tips, especially after they are connected to the access

point, as this could lead to electrostatic discharge (ESD), which could damage the equipment.

Rotate for

best reception.

9 Configuration Notes

oFor a new access point installation, the default WLAN Service Area (ESSID) is 3Com and no

security is set. Unless it detects a DHCP server on the network, the access point uses Auto IP

to assign an IP address of the form 169.254.2.1.

oUse the 3Com Wireless Infrastructure Device Manager to locate 3Com Wireless LAN devices

and launch their configurations. When installing the device manager, make sure the computer

is connected to the same network as the device to be configured. After installing and

launching the device manager, select the device to be configured from network tree and click

Configure to launch the configuration Web interface. Refer to the Access Points 8250/8500/

8750 User Guide (included on the installation CD) for detailed information and instructions

on locating and configuring access points.

oIf you experience difficulty with the installation, see the Troubleshooting section of the

User Guide.

For the latest information, see the 3Com Corporation World Wide Web site: http://www.3com.com/.

trademarks of 3Com Corporation. All other company and product names may be trademarks of the respective

companies with which they are associated.

DQA82507 Rev 5AAA01

Published January 2004

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