3Com 3CRWX385075A - Wireless LAN Managed Access Point... User manual

Improv s P rformanc
and Scalability with
Distribut d Forwarding
at th Acc ss Point
for Voic and
Oth r Low Lat ncy
Applications
DATA SHEET
OVERVIEW
The 3Com®wireless LAN Managed Access Point (MAP) 3850 delivers
secure, voice-ready reliable connectivity for WLAN users. An integral
component of the 3Com Wireless LAN Mobility System, the 3Com MAP
3850 with intelligent switching offers both centralized and distributed
data forwarding, with the MAP automatically determining the best
alternative based on the requirements of the underlying application.
This allows it to support the most demanding wireless applications
indoors and outdoors, including Voice over Wi-Fi.
Fully controlled by a WLAN switch or controller with which it securely
communicates, the MAP contains no local data store for sensitive data,
eliminating the chance of information being compromised due to hacking
or theft. The end result helps reduce capital expenses and ongoing
administrative costs—all while keeping the wireless LAN secure.
KEY BENEFITS
PROVIDES VOICE-READY WIRELESS CONNECTIONS
Distributed forwarding in the 3Com Managed Access Point 3850 optimizes
traffic flow, reducing latency, while providing ultra high performance
and massive scalability. The MAP automatically calculates the data
integrity and RF signal strength of the wireless channel, continually
tuning it for optimal RF channel and transmit power, while enforcing
the prioritization of delay-sensitive voice and other critical applications.
Wi-Fi Multimedia (WMM) or SpectraLink Voice Priority (SVP) helps
ensure optimal QoS for voice traffic. Policies provide per user, protocol,
or class-of-service (CoS) mapping, while enhanced features such as Call
Admission Control can finely tune deployment of Voice over Wireless.
SIMPLIFIES CONFIG RATION, CONTROL AND OPTIMIZATION
With remote management, the arduous process of initially configuring
and deploying access points (APs) is vastly simplified because configuration
settings are centrally distributed for consistency and accuracy. And for
easier long-term management, any added MAPs inherit configuration
settings from their wireless switch or controller.
Automated network controls at the wireless switch improve coverage
and service by optimizing RF gain, assigning radio channels, balancing
traffic loads and monitoring the RF environment of all managed access
points with which it is associated.
3Com®Wireless LAN Managed Access oint 3850
3Com Wireless LAN Managed Access oint 3850

3Com®Wireless LAN Managed Access oint 3850
2
KEY BENEFITS
(CONTIN ED)
DELIVERS SEC RITY AND SEAMLESS MOBILITY
Local traffic encryption distributes the encryption processing across the network rather than relying on
one central device. Continuous, on-demand, or scheduled RF scans can be used to locate users and identify
and isolate potentially harmful rogue APs or other vulnerabilities.
3Com wireless switches and controllers integrate with backend Authorization/Authentication/Accounting
(AAA) servers, consistently enforcing user and group access policies across the wireless LAN to provide secure
session integrity as users roam throughout the network. No re-association or IT intervention is required.
The MAP 3850 also supports location-based service applications that rely on Wi-Fi signal information for
position location; common usages include asset tracking or client location.
PROVIDES SCALEABLE DEPLOYMENT OF REMOTE OFFICE WIRELESS NETWORKS
Distributed Forwarding on the MAP 3850 allows scalable wireless deployments in remote locations. Only
authentication and control traffic is sent back to the wireless controller, while most user traffic can stay local
to that site, thereby improving performance and increasing scalability of distributed wireless deployments.
This new architecture provides an IEEE 802.11n-ready wireless infrastructure, without the need for expensive
controller upgrades.
EXTENDS THE REACH OF THE WIRELESS NETWORK
In addition to traditional access point functionality, the MAP 3850 can also serve as an IEEE 802.11s mesh AP,
mesh point, mesh portal, or WDS bridge to other MAP 3850s, extending the reach of enterprise WLANs. The
MAP can support such functionality in either point-to-point or point-to-multipoint topologies, allowing
maximum flexibility within a mesh or bridged environment.
The MAP 3850 can be configured with one radio for client services and the other for mesh service. The MAP
can also be used in a dedicated bridging mode, to provide seamless connectivity between buildings without
the expense of laying new cable.
BOOSTS RELIABILITY AND RESILIENCY
The MAP 3850 offers dual Ethernet ports with Power over Ethernet (PoE) support. With automatic failover
capability for both data and electrical power, this MAP adds a level of redundancy for demanding environ-
ments and increases network uptime.

3Com®Wireless LAN Managed Access oint 3850
3
FEAT RES CONVERGENCE-OPTIMIZED WIRELESS NETWORKING
Distributed forwarding › The 3Com Managed Access oint 3850 with distributed forwarding optimizes traffic
flow, reducing latency.
IEEE 802.11i PMK cached roaming › When roaming between access points, security credentials no longer
must be completely reauthenticated, helping reduce dropped voice sessions.
Session-based bandwidth reservation › Voice QoS can be assured with IEEE 802.11e TS EC Call
Admissions Control (CAC).
Wi-Fi Multimedia (WMM) › WMM grants preference to high-priority traffic like voice.
Neighbor Report advertisement › Load balancing using IEEE 802.11k directs traffic to a neighbor A that
has a lighter load or offers enhanced services.
SEC RITY
Strong, multiple encryption › IEEE 802.11i W A2 Advanced Encryption Standard (AES), W A dynamic
Temporal Key Integrity rotocol (TKI ) and Wi-Fi Equivalent rivacy (WE ) packet encryption help ensure strong
data security.
Virtual private group support › Administrators can independently encrypt and isolate subnets or VLANs
using the same SSID.
Intrusion Detection and Protection › Multi-band sweeps scan the RF environment, searching for rogue
access points, denial-of-service (DoS) attacks, ad-hoc users and sources of RF interference and takes action to
mitigate the intrusion.
Theft- and hacker-safe › No local data store of sensitive network data; if a MA is stolen, no secure information
goes with it.
INSTALLATION EASE AND FLEXIBILITY
Simple installation › No pre-staging or pre-configuration is required for new MA s; replacement MA s inherit
configuration information from their WLAN switch or controller.
Flexible deployment topologies › MA can be directly or remotely connected to their WLAN switch or controller,
offering a wide variety of flexible deployment scenarios.
PoE support › Both data and power are supplied by a 3Com wireless switch or any 802.11af-compliant device
over Ethernet cabling, eliminating the need for power adapters, power cords, or AC outlets.
Dual-band operation › The MA 3850 supports IEEE 802.11a and 802.11b/g simultaneously for user flexibility.
SCALABILITY AND RESILIENCY
Scales to hundreds of users › Supports up to 500 simultaneous clients.
Intelligent switching › Enables distributed forwarding of user traffic through the MA .
PoE and data port redundancy › If the MA loses either the LAN or oE connection on either port, it will
automatically failover to the other port, increasing network uptime.
COMPREHENSIVE MANAGEMENT AND CONTROL
Automated transmit power and radio channel assignment › Transmit power settings and radio channel
assignments can be set to optimize the RF cell size and to support international requirements.
Remote management › Channel number, power level, SSIDs and security settings are all handled by the
wireless LAN switch or controller for additional security; MA s are not operational in stand-alone mode.

3Com®Wireless LAN Managed Access oint 3850
Visit www.3com.com for more information about 3Com secure converged network solutions.
3Com Corporation, Corporate Headquarters, 350 Campus Drive, Marlborough, MA 01752-3064
3Com is publicly traded on NASDAQ under the symbol COMS.
Copyright © 2007 3Com Corporation. All rights reserved. 3Com and the 3Com logo are registered trademarks, and Express is a service mark of 3Com Corporation.
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. All specifications are subject to change without notice. 401058-001 09/07
ORDERING
INFORMATION
PROD CT DESCRIPTION 3COM SK
3Com Wireless LAN Managed Access oint 3850 3CRWX385075A
Wir l ss LAN Manag d Acc ss Point Ant nna Options
3Com 6/8dBi Dual Band Omni Antenna 3CWE591
Wir l ss LAN Controll r, Switch s and Softwar 1
3Com Wireless LAN Controller WX4400 3CRWX440095A
3Com Wireless LAN Controller WX2200 3CRWX220095A
3Com Wireless LAN Switch WX1200 3CRWX120695A
3Com WXR100 Remote Office Wireless LAN Switch 3CRWXR10095A
3Com Wireless LAN Switch Manager 3CWXM10A
3Com Global S rvic s
3Com Wireless LAN Site Survey, Network Health Check,
Installation Services and ExpressSM Maintenance www.3com.com/services_quote
3Com University Courses www.3com.com/3comu
1 WLAN Controller or WLAN Switch required for operation of managed access point.
SYSTEM REQ IREMENTS
A 3Com Wireless LAN Controller or
Switch—Wireless LAN Controller
WX4400 or WX2200, Wireless LAN
Switch WX1200, or WXR100 Remote
Office Wireless LAN Switch—
is required for MAP operation;
3Com Wireless LAN Switch Manager
recommended for MAP operation
TOTAL PORTS
Two 10BASE-T/100BASE-TX
IEEE 802.3af-compatible PoE ports
with auto-negotiation
MEDIA INTERFACES
RJ-45; IEEE 802.11a, 802.11b, 802.11g
DATA RATES
IEEE 802.11a/g: 54, 48, 36, 24, 18, 12,
9, 6 Mbps; Orthogonal Frequency
Division Multiplexing (OFDM), with
automatic fallback
IEEE 802.11b: 11, 5.5, 2, 1 Mbps;
Direct-Sequence Spread Spectrum
(DSSS), with automatic fallback
FREQ ENCY BAND
IEEE 802.11a: 5.15-5.85 GHz
IEEE 802.11b/g: 2.4-2.484 GHz
MEDIA ACCESS PROTOCOL
CSMA/CA
OPERATING CHANNELS
Channel availability depends on local
country regulations. Wireless LAN
system administrator must choose
correct country of operation.
Channels are then automatically
configured to comply with specified
country’s regulations.
OPERATING RANGE
IEEE 802.11a: up to 50 meters (164 ft)
transmit and receive
IEEE 802.11b/g: up to 100 meters (328 ft)
transmit and receive
DIVERSITY ANTENNAS
Two internal (integrated) dual-band
2.4-2.48/5.15-5.825 GHz, 2dBi omni-
directional antennas
Additional optional antenna available
TRANSMIT POWER SETTINGS
Transmit levels are measured
conducted, and the maximums
shown are reduced based on
country regulations.
IEEE 802.11a
6 to 24 Mbps: 21±2 dBm
36 Mbps: 21±2 dBm
48 Mbps: 19±2 dBm
54 Mbps: 17±2 dBm
IEEE 802.11b
1 Mbps: 23±2 dBm
2 Mbps: 23±2 dBm
5.5 Mbps: 23±2 dBm
11 Mbps: 23±2 dBm
IEEE 802.11g
6 to 24 Mbps: 23±2 dBm
36 Mbps: 22±2 dBm
48 Mbps: 20±2 dBm
54 Mbps: 19±2 dBm
Receive Sensitivity
IEEE 802.11a
6 Mbps: -91 dBm
12 Mbps: -88 dBm
18 Mbps: -87 dBm
24 Mbps: -82 dBm
36 Mbps: -79 dBm
48 Mbps: -74 dBm
54 Mbps: -71 dBm
IEEE 802.11b
1 Mbps: -94 dBm
2 Mbps: -92 dBm
5.5 Mbps: -90 dBm
11 Mbps: -85 dBm
IEEE 802.11g
6 Mbps: -90 dBm
9 Mbps: -89 dBm
12 Mbps: -88 dBm
18 Mbps: -86 dBm
24 Mbps: -83 dBm
36 Mbps: -79 dBm
48 Mbps: -74 dBm
54 Mbps: -72 dBm
POWER CONS MPTION
9.3 W, max. (from PoE ports)
SEC RITY
WEP 40/64 and 104/128-bit encryption
WPA (T IP) and WPA2 (AES)
Multiple SSID support at the MAP
Access Control Lists (ACLs) and VLAN
support at the wireless switch/ controller
ensington Security Slot
LEDS
Radio 1, radio 2, health
STANDARDS CONFORMANCE
IEEE 802.11a, 802.11b, 802.11d,
802.11e, 802.11g, 802.11h, 802.11i,
802.11s, 802.1X, 802.3af, 802.3i,
802.3u; WEP, AES, WPA, WPA2,
Wi-Fi CERTIFIED
REG LATORY/AGENCY APPROVALS
Saf ty
UL 60950-1, 1st Edition
CAN/CSA C22-2 No. 60950-1-03
CB Scheme to IEC 60950-1, 1st Edition
EN 60950-1, 1st Edition
Environm ntal
WEEE: EU Directive 2002/96/EC
ROHS: EU Directive 2002/95/EC
Radio
RTTE: EU Directive 1999/5/EC
FCC Parts 15.247,15.407
Industry Canada RSS-210
Oth r
EN 60601-1-2 (2001): EMC for Medical
Electrical Equipment
DIMENSIONS AND WEIGHT
Diameter: 16.8 cm (6.60 in)
Depth: 5.3 cm (2.09 in)
Weight: 366 g (12.9 oz)
ENVIRONMENTAL RANGES
Operating temperature: 0 to 50°C
(32 to 122°F)
Storage temperature: -25 to 70°C
(-4 to 158°F)
Humidity: 10 to 95% non-condensing
PACKAGE CONTENTS
3Com managed WLAN access point
Mounting hardware
Quick Start guide
Warranty booklet
WARRANTY AND OTHER SERVICES
Limited Hardware Warranty for one
year. 90 days free technical support.
Refer to www.3com.com/warranty
for details.
SPECIFICATIONS