CONNECTORS
24 total available ports, comprised of:
20 auto-negotiating 10BASE-T/
100BASE-TX/1000BASE-T ports
configured as auto MDI/MDIX
4 dual-personality Gigabit port pairs,
configurableas10BASE-T/100BASE-TX/
1000BASE-T or SFP
PERFORMANCE
48 Gbps, max.
Wirespeed performance across ports
LAYER 2 SWITCHING
8,196 MAC addresses in address table
256 port-basedVLANs (IEEE 802.1Q);
max.
IEEE 802.3ad Link Aggregation, Link
Aggregation Control Protocol (LACP)
Auto-negotiation of port speed and
duplex
IEEE 802.3x full-duplex flow control
IEEE 802.1D Spanning Tree Protocol
(STP)
IEEE 802.1w Rapid SpanningTree
Protocol (RSTP)
IEEE 802.1s Multiple SpanningTree
Protocol (MSTP)
Internet Group Management Protocol
(IGMP) snooping on Layer 1 and 2
interfaces
CONVERGENCE
4 hardware queues per port
IEEE 802.1p Class of Service/Quality
of Service (CoS/QoS)
Auto-voice VLAN for automatic
vendor-independent segregation
and prioritization of VoIP traffic
Wi-Fi Multimedia (WMM)
256 Access Control Lists (ACLs)
4 BSSIDs per radio
Diffserv Codepoint (DSCP)
SECURITY
Rogue AP detection and mitigation
IEEE 802.1X network login user
authentication
EAP over LAN (EAPoL) transport with
PEAP and EAP-TLS authentication
RADIUS server authentication
(RFC 2618)
Local MAC authentication
AutomaticVLAN assignment via
RADIUS server
IEEE 802.1X user authentication of
switch management on switchTelnet
and console sessions; multiple access
privilege levels
Hierarchical management and password
protection formanagement interface
WIRELESS ENCRYPTION
WPA Personal and Enterprise
WPA 2 Personal and Enterprise
AES (CCMP): 128-bit (FIPS-197)
WEP 40/64- and 104/128-bit
TKIP: RC4 40-bit
SSL and TLS: RC4 128-bit and RSA
1024- and 2048-bit
EAP-TLS, EAP-TTLS/MSCHAPv2,
PEAPv0/EAP-MSCHAPv2, EAP-SIM
POWER OVER ETHERNET
IEEE 802.3af
15.4W per port, max.
ACCESSPOINTSUPPORT
Ships with support for up to 24 of the
below access points:
• 3Com Wireless 7760 11a/b/g PoE
Access Point (3CRWE776075)
• 3Com Wireless 8760 Dual-Radio
11a/b/g PoE Access Point
(3CRWE876075)
Max. 30 users per AP radio;
250 wireless clients max. per switch
ROAMING SUPPORT
Inter-AP roaming
Fast roaming
Dynamic load balancing
MANAGEMENT
Embedded GUI web management
interface
CLI via console orTelnet
System configuration with SNMP v1,
2c and 3 encryption
SSH v2 encryption
Configuration file for backup and
restore; dual configuration files
available
Dual firmware images
Remote Monitoring (RMON) groups:
statistics, history, alarm and events
Port mirroring/monitoring
System upgrade via HTTP and
TFTP (RFC1350)
Syslog
SNTP
RADIO RESOURCE MANAGEMENT
Automatic channel assignment
Dynamic load balancing
Bandwidth management (WMM)
DIMENSIONS
Height: 4.4 cm (1.7 in or 1 RU)
Width: 44.0 cm (17.3 in)
Depth: 41.5 cm (16.3 in)
Weight: 5.9 kg (13.0 lb)
POWER SUPPLY
Input voltage: 100-240 VAC, 50/60 Hz
Current rating: 8A, max.
Power consumption: 465W, max.
Power dissipation: 207 BTU/hr, max.
ENVIRONMENTAL REQUIREMENTS
Operating temperature: 0° to 40°C
(32° to 104°F)
Storage temperature: -40° to 70°C
(-40° to 158°F)
Humidity (operating and storage):
10% to 95% non-condensing
Standard: EN 60068 (IEC 68)
RELIABILITY
MTBF: 36 years (315,000 hours)
LED INDICATORS
Port speed or PoE status, SFP module
presence, fan, system
IEEE STANDARDS SUPPORTED
IEEE 802.1d Spanning Tree
IEEE 802.1p Priority Tags
IEEE 802.1QVLANs
IEEE 802.1s Multiple SpanningTree
IEEE 802.1X RADIUS
IEEE 802.1w Rapid SpanningTree
IEEE 802.3 Ethernet
IEEE 802.3ab Gigabit Ethernet
IEEE 802.3acVLAN tag
IEEE 802.3ad Link Aggregation
IEEE 802.3af Power over Ethernet
IEEE 802.3u Fast Ethernet
IEEE 802.3x Flow Control
IEEE 802.3z Gigabit Ethernet
IEEE 802.11a 54 Mbps, 5 GHz
IEEE 802.11b5.5and 11 Mbps,2.4GHz
IEEE 802.11d International roaming
extensions
IEEE 802.11g 54 Mbps, 2.4 GHz
IEEE802.11hSpectrummanaged802.11a
IEEE 802.11i Enhanced security
EMISSIONS / AGENCY APPROVALS
EN 55022 Class A
FCC Part 15 Subpart B Class A
ICES-003 Class A
VCCI Class A
CISPR 22 Class A
EN 61000-3-2, 61000-3-3
IMMUNITY
EN 55024, 60601-1-2
SAFETY AGENCY CERTIFICATIONS
UL 60950-1
EN 60950-1
CSA 2.22 # 60950-1
IEC 60950-1
EU RoHS Compliant
PACKAGE CONTENTS
Switch unit, power cord, self-adhesive
rubber pads, rack-mount kit, Quick
Start Guide, warranty flyer
SYSTEM PREREQUISITES
Windows PC with Internet Explorer
version 6.0 or greater required for GUI
web management
DHCP server
WARRANTY AND OTHER SERVICES
Three-year HardwareWarranty,
including fans and power supply
Limited SoftwareWarranty for 90 days
Advance Hardware Replacement
with Next Business Day shipment in
most regions
90 days of telephone technical support
Refer to
www.3com.com/warranty
for details.
3
COM
®
U
NIFIED GIGABIT SWITCH
Visit www.3com.com for more information about 3Com secure converged network solutions.
3ComCorporation, CorporateHeadquarters, 350CampusDrive,Marlborough,MA01752-3064
3Comis publiclytraded onNASDAQunderthe symbol COMS.
Copyright ©2008 3ComCorporation. Allrights reserved.3Com, the3Comlogo,IntelliJack, andNBX areregistered trademarks,and Expressis aservice mark, of
3Com Corporation.Wi-Fi andWMMareregistered trademarksoftheWi-Fi Alliance;Wi-Fi CERTIFIED,WPA, andWPA2aretrademarks oftheWi-Fi Alliance. All
other company andproduct namesmaybe trademarks oftheir respectivecompanies.While every effortis madeto ensurethe information givenisaccurate, 3Com
does notaccept liability foranyerrors ormistakes which mayarise. Allspecifications aresubject tochangewithout notice. 401001-005 02/08
PRODUCT DESCRIPTION 3COM SKU
3Com Unified Gigabit Wired and Wireless PoE Switch 24-Port 3CRUS2475
Transceivers
3Com 1000BASE-SX SFP 3CSFP91
3Com 1000BASE-LX SFP 3CSFP92
Supported Access Points
3Com Wireless7760 11a/b/g PoE Access Point 3CRWE776075
3Com Wireless8760 Dual-Radio 11a/b/g PoE Access Point 3CRWE876075
3Com Global Services
3Com WirelessLANSiteSurvey,NetworkHealthCheck,
Installation Services and Express
SM
Maintenance www.3com.com/services_quote
3Com UniversityCourses www.3com.com/3comu
ORDERING
INFORMATION
SPECIFICATIONS
