3Com 8250 Bedienungsanleitung

DATA SHEET

Key Benefits Full Standards Support

With 3Com®, the freedom of wireless net-

working includes the freedom of choice.

The 3Com Wireless LAN Access Points

8250, 8500, and 8750 offer a dual-mode

architecture that supports 802.11-stan-

dard 11a, 11b, and 11g wireless users on a

single device. The 3Com Wireless LAN

Access Point 7250 features a single 11g

radio design that provides real value with

advanced enterprise features at an eco-

nomical price.

Modular and Upgradeable

3Com Wireless LAN Access Points

8250/8500/8750 were designed from the

ground up as a modular, upgradeable plat-

form for configuration flexibility and

investment protection. They offer the

flexibility to mix and match radio bands

to meet different coverage and bandwidth

needs within the same area. With easy-to-

install Mini PCI upgrade kits, you can

choose to support two different radio

modes now, or choose one radio mode and

upgrade or add another mode as your

needs grow.

Tough Security

3Com delivers one of the most robust

suites of standards-based security on the

market today on all of its enterprise-class

access points. To protect the wireless

LAN, 3Com supports Wireless Equivalent

Privacy (WEP) RC4 40/ 64-bit, 128-bit and

154-bit shared-key encryption. 3Com

strengthens this basic security mechanism

with additional security features, includ-

ing local MAC authentication, Dynamic

Security Link (DSL) session encryption,

802.1x RADIUS server authentication, and

Temporal Key Integrity Protocol (TKIP)

and Wireless Protected Access (WPA)

Extensible Authentication Protocol (EAP)

user authentication. Your wireless link

receives the highest available protection

with WPA Advanced Encryption Service

(AES) 256-bit encryption.

Performance and Reliability

3Com wireless access point performance

features ensure reliable and seamless con-

nections for users wherever they roam.

Clear Channel Select automatically finds

the least loaded channel for interference-

free communication. Auto network

connect and dynamic rate shifting keep

users connected through a wide variety of

conditions by changing to the optimum

connection speed as they move through

the network.

Manageability

3Com offers a wide range of standards-

based management support, from SNMP

to 3Com Network Supervisor (3NS) and

HP OpenView for seamless integration

with your wired network. Wireless

Infrastructure Device Manager and

Wireless LAN Device Discovery tools let

you configure parameters, run diagnos-

tics, and monitor performance from

anywhere on the network using an

embedded web server browser. You can

also replicate wireless device configura-

tions from one access point to another

using the save and load feature to simplify

and reduce network administration.

Power over Ethernet (PoE) Flexibility

PoE support makes it easier than ever to

overcome installation problems with diffi-

cult-to-wire or hard-to-reach locations. The

same Category 5 cable that connects the

access point to the wired network also pro-

vides its power, so AC power outlet

locations are no longer an issue. You can

source power from a 802.3af-compliant PoE

switch or with an included power injector

or adapter.*

* 802.3af-compliant power injector

included with the AP 8250/8500/8750; the

AP 7250 ships with an AC power adapter.

Enterprise-Class 3Com®Wireless LAN

Access Points 7250/8250/8500/8750

ENTERPRISE-CLASS 3COM®WIRELESS LAN ACCESS POINTS 7250/8250/8500/8750

Feature Benefit

Powerful

High-speed and wide coverage 11g radio supports speeds up to 54 Mbps at distances up to 100 meters (328 feet); 11a radio

supports speeds up to 54 Mbps at distances up to 50 meters (164 feet). (11a not supported

by the Access Point 7250.)

11a Turbo mode Provides even higher throughput capability, up to 108 Mbps.

User support Each access point supports up to 253 simultaneous users, allowing plenty of room for growth.

Secure

40/64- and 128-/154-bit WEP and Basic and advanced encryption protect the privacy of data transmitted over the wireless LAN.

WPA 256-bit AES encryption

Dynamic security link (DSL) Automatically assigns user-specific 128-bit encryption keys for wireless sessions.

Dynamic session key management and TKIP Dynamic key assignment improves security and simplifies deployment.

802.1x RADIUS server authentication Helps ensure that only authorized users can access your network and centralizes authorization

of wireless users across your network.

Access control lists Control access to network resources.

Client-to-client and uplink filtering Block direct communications between other wireless users associated to the access points.

MAC address filtering Allows only specific WLAN cards to connect to the access point.

Dynamic VLAN assignment Used with RADIUS authentication, assigns users to an appropriate VLAN, further protecting

access to network resources.

Compatible and Flexible

Modular, dual-mode radio architecture Interchangeable radio slots support more wireless clients within the same coverage area with

(8250/8500/8750) optional Mini PCI upgrade kits.

Simultaneous standard support 802.11a and 802.11g in same access point provide concurrent wireless connectivity for all

(8250/8500/8750) 802.11 a/b/g clients.

802.11g-802.11b backward-compatibility 11g radio supports both11g and 11b wireless users, preserving existing wireless investments.

Wi-Fi certification Ensures interoperability with Wi-Fi certified products from other vendors.

Power over Ethernet (PoE) Solves hard-to-wire location problems; Ethernet cable supplies connectivity and electrical

power. 802.3af-compliant power injector included with the Access Point 8250, 8500, and

8750; the AP 7250 ships with an AC power adapter.

Easy to Use Management

Simple installation No need to drill holes or run Ethernet cabling to set up your network.

Dynamic Host Configuration Protocol Provides DHCP passthrough to simplify management.

(DHCP) support

Wireless Infrastructure Device Manager Automatically identify and configure network devices, run diagnostics, and monitor

and Wireless LAN Device Discovery tools performance.

Web-based administration Works with any web browser that supports HTML and Java Script; lets you configure and

manage network devices from anywhere.

Save and load feature Copies settings to wireless devices on the network, simplifying and speeding LAN setup.

3NS support Powerful yet simple-to-use network management designed for small businesses.

SNMP, HP OpenView support Enables remote, central management using popular third-party network management programs.

RADIUS accounting support Enables billing by usage for hotspot and other commercial deployments.

Site survey tool Works with 3Com enterprise wireless PC Cards to help you optimize the location and number

of access points for your site.

Reliable

Dynamic rate shifting and auto Automatically moves between connection speeds in response to physical conditions and RF

network connect interference.

Clear Channel Select Selects the channel with the least traffic for problem-free connections.

*Range depends on physical conditions, building construction, electrical devices in the area, and other environmental factors.

The simple, secure way to network without wires

ENTERPRISE-CLASS 3COM®WIRELESS LAN ACCESS POINTS 7250/8250/8500/8750

Security

Authentication:

802.11x Remote Access Dial-In Service (RADIUS)

server-based MAC address authentication. WPA

TKIP authentication using EAP-MD5, EAP-TLS,

EAP-TTLS, and PEAP protocols.

Encryption:

Advanced WPA 256-bit encryption (AES),

40/64-bit, 128-bit and 154-bit, WEP shared key

encryption, 3Com proprietary 128-bit Dynamic

Security Link encryption, Dynamic session key

management

Access Control:

MAC address filtering, sever access control lists.

Performance

253 simultaneous user support

Dynamic rate shifting

Auto network connect

Clear channel select

802.11a turbo mode (not supported by AP 7250)

DHCP passthrough

Network Management

3NS network management utility

Site Survey tool

Wireless Infrastructure Device Manager and

Wireless LAN Discovery Tool

Embedded web server

SNMP v1- or SNMP v3-compliant management

HP OpenView support

RADIUS accounting

Standards Conformance

Wi-Fi certified, WEP, WPA

IEEE 802.11b, IEEE 802.11a, IEEE 802.11g

IEEE 802.3af (PoE)

CSMA/CA

Radio Operation

Data Rates:

802.11a: 54, 48, 36, 24, 18, 12, 9, 6 Mbps (not sup-

ported by AP 7250)

802.11g: 54, 48, 36, 24, 18, 12, 9, 6, 11, 5.5, 2, 1 Mbps

Frequency Band:

802.11a: 5 GHz; 802.11g: 2.4 GHz

Wireless Medium:

802.11a: OFDM, 802.11g: OFDM and DSSS (with

Barker coding and CCK for backward compatibility

with 802.11b)

Operating Channels:

802.11a: 36-64 (8 non-overlapping total), 802.11g:

1-11 (U.S. and Canada), 1-13 (Worldwide; channel

availability depends on local regulations)

Operating Range (indoor):

802.11a: up to 50 meters (164 feet) transmit and

receive

802.11g: up to 100 meters (328 feet) transmit and

receive

Power of Radio:

802.11a: 100mW

802.11g: 100mW

Transmit Power Settings:

802.11a: 17 dBm low band depending on bitrate,

20dBm midband depending on the bitrate;

802.11g: 17 dBm depending on bitrate

Receive Sensitivity: Access Point 8250/8500/8750

802.11a:

6 Mbps: -84 dBm, +/- 2 dBm (depending on band)

12 Mbps: -82 dBm

36 Mbps: -73 dBm

54 Mbps: -66 dBm

802.11g:

1 Mbps: -96 dBm

2 Mbps: -94 dBm

5.5 Mbps: -92dBm

11 Mbps: -88 dBm

12 Mbps: - 86dBm

24 Mbps: -85 dBm

36 Mbps: - 80dBm

54 Mbps: - 73 dBm

Receive Sensitivity: Access Point 7250

802.11g:

1 Mbps: -91 dBm

2 Mbps: -89 dBm

5.5 Mbps: -87 dBm

11 Mbps: -83 dBm

12 Mbps: -81 dBm

24 Mbps: -80 dBm

36 Mbps: -75 dBm

54 Mbps: -68 dBm

Antenna Options:

802.11a: Integrated antenna only; 802.11g:

External antenna options are available, see

"Accessories" under Ordering Information for

detail

Safety, RF, and Electromagnetic Conformance

Safety:

IEC & EN 60950, UL / CSA 60950, NOM 019

RF:

FCC Part 15.247, Part 15.205, Part 15.209, & Part

15.407, RSS-210, EN 300 328-2, EN 301 893,

TELEC RCR STD 33 & T66

EMC:

EN 301 489-17, EN 301 489-01

Environmental Operating Ranges

Temperature: 0º C to 40º C (32º F to 104º F); with

external antennas 15º C to 40º C (59º F to 105º F)

Humidity: 5-95% non-condensing

Physical Dimensions

Access Point 8250/8500/8750

Height: 32 cm (12.5 in)

Width: 20 cm (8.1 in)

Depth: 7 cm (2.8 in

Access Point 7250

Height: 20.5 cm (8 in)

Width: 28 cm (11 in)

Depth: 8 cm (3 in)

Package Contents

Access point

Inline PoE power injector with local power cord

(Access Point 8250/8500/8750)

AC power adapter (Access Point 7250)

CD ROM with management utilities and site survey

tool

10-meter (33-foot) Category 5 Ethernet cable

Mounting bracket and hardware

User guide

Warranty

One-year hardware warranty, 90-day software

warranty

Specifications

Ordering

Information

3Com Wireless LAN Access Points are

available in the U.S./Canada, Latin America,

Asia-Pacific countries, and Europe.

Access Points

Product Name Order Number Product Description

3Com Wireless LAN Access Point 7250 3CRWE725075A Ships with one 802.11g radio

3Com Wireless LAN Access Point 8250 3CRWE825075A Ships with one 802.11g radio and one open radio slot

3Com Wireless LAN Access Point 8500 3CRWE850075A Ships with one 802.11a radio and one open radio slot

3Com Wireless LAN Access Point 8750 3CRWE875075A Ships with one 802.11a radio and one 802.11g radio

ENTERPRISE-CLASS 3COM®WIRELESS LAN ACCESS POINTS 7250/8250/8500/8750

3Com Corporation, Corporate Headquarters, 350 Campus Drive, Marlborough, MA 01752-3064

To learn more about 3Com solutions, visit www.3com.com. 3Com is publicly traded on NASDAQ under the symbol COMS.

Corporation. Possible made practical is a trademark of 3Com Corporation. Wi-Fi is a trademark of the Wireless Ethernet

Compatibility Alliance. All other company and product names may be trademarks of their respective companies. While

every effort is made to ensure the information given is accurate, 3Com does not accept liability for any errors or mistakes

which may arise. Specifications and other information in this document may be subject to change without notice.

400828-002 01/04

Important:

•Due to possible RF emissions outside of

the allowed spectrum, the 3Com®

Wireless LAN Access Point 8250

(3CRWE825075A), Wireless LAN Access

Point 8750 (3CRWE875075A) and

802.11g Wireless LAN Access Point

Upgrade Kit (3CRWEGMOD75A) may

only be used with external antennas

under the following conditions:

In the United States, Canada, and other

countries governed by FCC guidelines,

external antennas can only be used in an

access point operating temperature range of

15° C - 40° C (59° F - 104° F). In these coun-

tries only external antennas with a gain of

up to 8 dBi may be used. This includes the

antennas listed in the table below.

In the European Community, you may use

the antennas listed in the table as well as

the 3Com 13 dBi Sector-Panel Antenna

(3CWE495). The temperature restriction

does not apply.

•If the access point is used with an exter-

nal antenna you must also purchase an

antenna cable. For maximum efficiency,

use the shortest antenna cable possible.

Antenna cables induce signal loss,

which will limit the radiated power out-

put and range of the access point. Of the

options available, we recommend the

3Com 6-Foot Antenna Cable (3CWE480).

Accessories

Product Name Order Number Products Supported

3Com SuperStack®3Switch 4400 PWR 3C17205-US 3Com Wireless LAN Access Point 7250, 8250, 8500, and 8750

3Com Network Jack Multiport Power over

Ethernet Midspan Solution 3CNJPSE24 3Com Wireless LAN Access Point 7250, 8250, 8500, and 8750

3Com Power over Ethernet Single-Port

Midspan Solution 3CNJPSE 3Com Wireless LAN Access Point 7250, 8250, 8500, and 8750

3Com 4.0 dBi Omnidirectional Antenna 3CWE490 3Com Wireless LAN Access Point 7250, 8250, and 8750

3Com 8.0 dBi Omnidirectional Antenna 3CWE491 3Com Wireless LAN Access Point 7250, 8250, and 8750

3Com 2.5 dBi Ceiling Mount Omnidirectional

Antenna 3CWE492 3Com Wireless LAN Access Point 7250, 8250, and 8750

3Com 4.0 dBi Hallway Bidirectional Antenna 3CWE497 3Com Wireless LAN Access Point 7250, 8250, and 8750

3Com 8.0 dBi Sector-Panel Antenna 3CWE498 3Com Wireless LAN Access Point 7250, 8250, and 8750

3Com 6-Foot Antenna Cable 3CWE480 3Com Wireless LAN Access Point 7250, 8250, and 8750

3Com 20-Foot Antenna Cable 3CWE481 3Com Wireless LAN Access Point 7250, 8250, and 8750

Upgrade Kits

Product Name Order Number Products Supported

3Com 802.11a Wireless LAN 3CRWEAMOD75A •Upgrades the earlier model Access Point 8200 to an Access Point

Access Point Upgrade Kit 8700. Add the 11a module and update the firmware with the

11a module CD-ROM.

•Upgrades the Access Point 8250 to an Access Point 8750. Add

the 11a module and update the firmware using the 11a module

CD-ROM.

3Com 802.11g Wireless LAN 3CRWEGMOD75A •Upgrades the earlier model Access Point 8200 to an Access Point

Access Point Upgrade Kit 8250. Replace the 11b module with the 11g module and update

the firmware with the 11g module CD-ROM.

•Upgrades the earlier model Access Point 8700 to an Access Point

8750. Replace the 11b module with the 11g module and update

the firmware with the 11g module CD-ROM.

•Upgrades the Access Point 8500 to an Access Point 8750. Add

the 11g module and upgrade the firmware using the 11g module

CD-ROM.

Andere Handbücher für 8250

Dieses Handbuch passt für folgende Modelle

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