3Com Switch 4500 Family User manual

SWITC ING
DATA HEET
OVERVIEW
The 3Com®Switch 4500 family of managed, stackable
10/100 Ethernet switches provides secure, flexible
LAN connectivity for enterprise and branch office
networks. The Switch 4500 family offers Layer 2
switching and dynamic Layer 3 routing, as well as
robust security, Quality of Service (QoS) and
management features to deliver intelligent edge
connectivity for essential business applications.
Four switch models—stackable in any
combination up to eight units—include:
>3Com Switch 4500 26-Port:
24 10/100 ports plus 2 dual-personality Gigabit
ort pairs
>3Com Switch 4500 50-Port:
48 10/100 ports plus 2 dual-personality Gigabit
port pairs
>3Com Switch 4500 PWR 26-Port:
24 10/100 Power over Ethernet (PoE) ports plus
2 dual-personality Gigabit port pairs
>3Com Switch 4500 PWR 50-Port:
48 10/100 PoE ports plus 2 dual-personality Gigabit
port pairs
KEY BENEFIT
ECURE THE NETWORK
Essential security features provide user and device
authentication, enforce access control for switch
management and enhance overall network security to
protect critical resources and information.
EMPOWER APPLICATION CONVERGENCE
The Switch 4500 family combines high performance
switching, QoS and advanced traffic management
features to help ensure essential applications get the
appropriate priority for efficient utilization of network
resources.
REDUCE DEPLOYMENT CO T
Two Switch 4500 models provide Power over Ethernet
(PoE). PoE provides electrical power and data
connectivity over a single Ethernet cable—resulting in
significant cost savings when deploying devices like IP
phones, wireless access points and IP security
cameras.
INCREA E FLEXIBILITY AND CALABILITY
Dual-personality ports allow for both copper and fiber
Gigabit uplink connections. The switch supports true
stacking with the ability to stack up to eight switch
units—384 10/100 ports per stack—with single IP
management and distributed aggregated links for
high uplink resiliency. Alternatively, cluster manage
up to 32 geographically distributed devices together,
with any mix of Switch 5500G, 5500, 4500G, 4500,
4200G and 4210s.
3COM SWITCH 4500
10/100 FAMILY
from top: 3Com Switch 4500 26-Port, Switch 4500 50-Port, Switch
4500 PWR 26-Port, Switch 4500 PWR 50-Port
Intelligent and secure edge connectivity,
ideal for small and medium enterprise and
branch office networks

ENHANCE MANAGEMENT AND CONTROL
The Switch 4500 family is easy to use and manage,
designed to increase business productivity by reliably
supporting business applications. Additionally, the PoE
models deliver intelligent power management (“smart
PoE”) with dynamic allocation of available power
resources.
MINIMIZE VOICE OVER IP COMPLEXITY
Minimize the cost and complexity associated with
adding or moving IP phones: the Switch 4500 detects
the presence of IP phones and dynamically assigns
switch ports to the voice VLAN, enabling automated
configuration and prioritization of Voice over IP (VoIP)
traffic.
DELIVER HIGH PERFORMANCE
No need to buy new switches when additional network
performance is needed, as the Switch 4500 family
features 26-port and 50-port models, providing
aggregate switching capacity up to 8.8 Gbps and 13.6
Gbps, respectively.
The Switch 4500 also supports jumbo frames at sizes
up to 9,216 bytes for greater efficiency in large data
transfers.
REDUCE CONFIGURATION EXPEN E
Automatic updating of Layer 3 network topologies,
negotiation of port speed and duplex mode, and
detection and adjustment of cable type reduces
configuration time and expense.
REDUNDANT POWER Y TEM UPPORT
The two 3Com Switch 4500 PWR models support a
redundant power system (RPS) connection.
RPS units provide these benefits:
› For PWR switches, an RPS can deliver more power
budget for IEEE 802.3af Power over Ethernet than
what the switches alone can provide. For example,
the Switch 4500G PWR 50-port switch has a PoE
power budget of 300 Watts, which means that
approximately half of the ports can provide the full
802.3af PoE power of 15.4 Watts. With an RPS provid-
ing power, all 48-ports can provide a full 15.4 Watts
of PoE power.
› They deliver redundant power to switches so there is
continued operation should the switch unit power
supply fail. This allows for continuous operation of
advanced Enterprise networks, particularly impor-
tant for converged networks running IP phones on
the network.
3Com H3C RPS Systems
3Com switches are compatible with 3Com 3C®RPS
solutions. These are enterprise-class power
redundancy systems that work with many 3Com fixed-
configuration switches. 3Com Corporation
manufactures networking equipment under the 3C
brand for sale into many markets.
The 3C RPS 1000 is 1U high and provides multiple
power output connections to support multiple switch
units at the same time. Two power rectifiers can be
installed for 1+1 load sharing and power redundancy.
It supports switches with -54V RPS connections, and
delivers sufficient power to fully provision all PoE
ports of a switch with full power redundancy.
UPPORTED BY LIMITED LIFETIME HARDWARE
WARRANTY
3Com gives a Limited Lifetime ardware Warranty on
the Switch 4500 10/100 Family. Also provided is
Advanced ardware Replacement, with next business
day shipment available in most regions, and telephone
support and limited lifetime software updates.
23COM 4500 10/100 FAMILY
KEY BENEFIT (continued)

33COM 4500 10/100 FAMILY
FEATURE HIGHLIGHT
FEATURE DE CRIPTION
IEEE 802.1X network access control Standards-based security combined with RADIUS authentication
RADIUS Authenticated Device Access Authentication of attached devices via MAC address for additional level of (RADA)
endpoint security
Access Control Lists (ACLs) Enable usage policies at each point of access to the network via the switch
Bandwidth rate limiting and protocol Enforce controls on each port for efficient use of network resources and filtering
prioritization of delay-sensitive VoIP traffic
PoE support Internal power supply provides a total PoE power budget of 300 Watts to
PoE-enabled devices like IP phones; optional supplemental power available
“Dual-personality” Gigabit Ethernet Choice of copper or fiber media for flexible uplinks
interfaces
Multicast filtering and Rapid Spanning Improve QoS, scalability and network availability
Tree Protocol support
Dynamic routing Routing Information Protocol (RIP) allows automatic updating of Layer 3
network topologies
Secure management Authentication and encryption of management traffic via Secure Shell
(SS v2) and SNMP v3
3Com Operating System Proven software featured in 3Com premium enterprise switches such as
the Switch 5500, 7700 and 8800 families
Service and Support Backed by 3Com Global Services and authorized partners with
demonstrated expertise in network assessment, implementation and
maintenance
CAMPU LAN CONFIGURATION UPPORTED BY THE WITCH
4500
PoEGigabit
Ethernet
Gigabit
Ethernet
Gigabit
Ethernet
GigabitLinkAggregation
(IEEE802.3ad)
PoE
3ComSwitch4500
3ComSwitch4500
3ComSwitch4500
3ComSwitch4500
Ethernet/FastEthernet
GigabitEthernet
PoweroverEthernet(PoE)
LinkAggregation(LAG)
3Com®3102
VoIPPhones
3Com3102
VoIPPhones
3ComRouter5012
3ComSwitch7754
DataCenter
Building1Building2
3ComSwitch4500G3ComSwitch4500G
Servers
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17561-91SuperStack3Switch450026-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17561-91SuperStack3Switch450026-Port
WAN / Internet
3ComV7205Server(IBM3650)for
VCX®IPTelephonyandConvergence
Applications

43COM 4500 10/100 FAMILY
ERVICE AND UPPORT
3Com Global Services offers the resources and talents
of a major corporation plus more than two decades of
experience in resolving network challenges and
delivering business benefits to enterprises around
the world.
Global support with a personalized focus in the local
language helps drive productivity and minimize
expenses. Because 3Com understands both the
technology and the business, we’re the partner you
need to maintain your competitive edge and remain
strong.
Additional Servi e, Support and Training Offerings
3Com GuardianSM Maintenan e Servi e
This service provides comprehensive on-site support and
includes advance hardware replacement, expedited telephone
technical support and software upgrades
3Com ExpressSM Maintenan e Servi e
This service provides speedy access to 3Com shipment of
advance hardware replacements (including a four-hour
option), expedited telephone technical support and software
upgrades
Network Health Che k
An activity-auditing service focused on improving network
performance and productivity
Includes traffic monitoring, utilization analysis, problem
identification, and asset deployment recommendations
Extensive report provides blueprint for action
Network Installation and Implementation Servi es
Experts set-up and configure equipment and integrate
technologies to maximize functionality and minimize business
disruption
For large and complex sites, implementation services include
personalized configuration, project management, extended
testing and coaching on network administration
Proje t Management
Provides extra focus and resources that special projects
demand
3Com engineers manage entire process from initial
specifications to post-project review
Using structured methodology, requirements are identified,
projects planned and progress of implementation activities
tracked
3Com University
Self-paced and instructor-led technology and product
courses, plus certification programs
Warranty 3Com Limited Lifetime Warranty. For as long as the original end user owns the product,
or for five years after 3Com discontinues the of sale of the product, whichever occurs first.
ardware coverage Covers the complete unit including power supply and fan.
In-warranty hardware replacement* Advanced ardware Replacement of hardware for the duration of the warranty. In the US
48 contiguous states this is same-day ship with next business day delivery when call
received before noon Pacific time. For Canada, Alaska and awaii, this is same-day ship
when call received before noon Pacific time. For the rest of the world, it is next-business-
day ship. Actual delivery times may vary depending on customer location. Reasonable
commercial efforts apply.
Software coverage 90 days for media replacement.
Software updates* Access to releases with incremental software features and bug fixes. For the Switch 4500,
updates are all releases within the licensed 3Com OS software level.
Telephone support* Technical support via phone for 90 days.
Online Knowledgebase support* Access to online troubleshooting tool for the duration of the warranty.
* These services are not included as part of the Warranty and 3Com reserves the right to modify or cancel this offering at any time, without advance notice.
This offering is not available where prohibited by law. Services are effective at warranty start date, and are enabled with product registration. Customers
receive a user ID with eSupport registration.
PRODUCT WARRANTY AND OTHER ERVICE

53COM 4500 10/100 FAMILY
All information in this section is relevant to all members of the
3Com Switch 4500 10/100 family, unless otherwise stated.
CONNECTORS
26-port non-PWR
26 total available ports, comprised of:
• 24 auto-negotiating 10BASE-T/100BASE-TX ports configured as
auto MDI/MDIX
• 2 dual-personality Gigabit port pairs, configurable as 10BASE-T/
100BASE-TX/1000BASE-T or SFP
26-port PWR
26 total available ports, comprised of:
• 24 auto-negotiating 10BASE-T/100BASE-TX ports configured as
auto MDI/MDIX; IEEE 802.3af in-line power
• 2 dual-personality Gigabit SFP port pairs
Unit ships with two 1000BASE-T SFPs
50-port models
50 total available ports, comprised of:
• 48 auto-negotiating 10BASE-T/100BASE-TX ports configured as
auto MDI/MDIX; IEEE 802.3af in-line power for PWR model
• 2 dual-personality Gigabit SFP port pairs
Units ship with two 1000BASE-T SFPs
PERFORMANCE
26-port
8.8 Gbps switching capacity, max.
6.5 Mpps forwarding rate, max.
50-port
13.6 Gbps switching capacity, max.
10.1 Mpps forwarding rate, max.
All models
Switch fabric bandwidth: 32 Gbps
Wirespeed performance across all ports within stack or fabric
Store-and-forward switching; latency <10 s
2 Gbps full-duplex stacking bandwidth
LAYER 2 SWITCHING
8,192 MAC addresses in address table
64 static MAC addresses, in addition to default address
256 Port-based VLANs (IEEE 802.1Q)
IEEE 802.3ad Link Aggregation Control Protocol (LACP); automated and
manual aggregation
Jumbo Frame Support
GARP VLAN Registration Protocol (GVRP)
Per-switch trunk groups: 13 groups (26-port); 25 groups (50-port)
8 10/100 or 2 Gigabit ports per group
Auto-negotiation of port speed and duplex
IEEE 802.3x full-duplex flow control
Back pressure flow control for half-duplex
Supports broadcast storm suppression per VLAN
IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
Bridge Protocol Data Unit (BPDU) protection
Internet Group Management Protocol (IGMP) snooping (v1, 2 and 3)
on Layer 2 interfaces
Filtering for 128 multicast groups
Spanning Tree enable / disable per port
Spanning Tree fast-start mode
Bridge Protocol Data Unit (BPDU) protection
D CP snooping
PECIFICATION
3ComSwitch4500
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
3CR17562-91SuperStack3Switch450050-Port
Gigabit
Ethernet
3Com®3102
VoIPPhones
Servers
3ComRouter3012
3ComNBXV30003ComNBXV3000
PoE
Ethernet/FastEthernet
GigabitEthernet
PoweroverEthernet(PoE)
WAN /Internet
3ComWireless7760
AccessPoint
Wireless
Laptop
3ComVCX®Connect100
VCXConnect
POWER
FXO
FXS
CPU
CM
MALLTOMEDIUM LAN CONFIGURATION UPPORTED BY THE
WITCH 4500

LAYER 3 SWITCHING
ardware based routing
12 static routes, in addition to default address
1,990 dynamic Address Resolution Protocol (ARP) entries; 16 static
4 IP interfaces
Routing Information Protocol (RIP) v1 and 2; supports 2,000 entries
Dynamic ost Configuration Protocol Relay (D CP Relay)
CONVERGENCE
Eight hardware queues per port
Weighted Round Robin (WRR)
IEEE 802.1p Class of Service/Quality of Service (CoS/QoS) on egress
IEEE 802.1p QoS marking/remarking
Weighted Fair Queuing (WFQ)
Strict Priority Queing (SP)
Auto prioritization of voice traffic determined by vendor OUI
DiffServ Code Point Expedited Forwarding (DSCP EF) remarking for
prioritization of VoIP traffic
Traffic shaping with port-based egress rate limiting; application and
protocol blocking
IEEE 802.3af Power over Ethernet standards-compliant (PWR models)
POE (PWR MODELS ONLY)
IEEE 802.3af PoE injection into Category 5 or 5e LAN wiring
(300 W total maximum)
Available standards-based DC supplemental power system supplies up to
15.4 W each of power to all PoE ports in a switch or stack
(5,914 W total maximum)
SECURITY
IEEE 802.1X Network login user authentication:
• EAP over LAN (EAPoL) transport with EAP-MD5, EAP-TLS,
EAP-TTLS, PAP, PEAP and C AP authentication
• Multiple users per port
• 1024 users per fabric
Local, RADIUS and WTACACS server authentication
RADIUS session accounting
Automatic VLAN assignment via RADIUS server
Wirespeed packet filtering in hardware
ACLs filter at Layers 2, 3 and 4:
• Source/destination MAC address
• Ethernet type
• Source/destination IP address
• Source/destination TCP port
• Source/destination UDP port
RADIUS Authenticated Device Access (RADA): authenticate devices based
on MAC address against RADIUS server, and assign VLAN ID and ACL
IEEE 802.1X user authentication of switch management on switch Telnet
and console sessions; four access privilege levels
ierarchical management and password protection for management inter-
face
SNMP v3 encryption
SS v2
TTPS web interface encryption
ARP attack detection and suppression
Port-based MAC address Disconnect Unknown Device (DUD)
Denial of Service protection
Local switch log-in password
Switch login via RADIUS
Trusted IP Management Addresses
Isolated port in VLAN
Blackhole MAC address
STACKING
Up to 384 10/100 front panel ports
Single IP address and management interfaces for stack-wide control
Distributed Link Aggregation
Clustering management with Switch 5500G, 5500, 4500G, 4500, 4210 and
4200G
MANAGEMENT
CLI via console or Telnet
Remote configuration via modem dial-up
3Com Operating System / Comware V3
Embedded web management interface
System configuration with SNMP v1, 2 and 3
IPv6 management including pingv6, tracertv6, Telnetv6, TFTPv6, DNSv6
and ARPv6
IPv6 management interface IP address configuration
Comprehensive statistics, including ACL/QoS and IP interface
Remote Monitoring (RMON) groups statistics, history, alarm
and events
1-to-1 and many-to-1 port mirroring
Detailed alarm and debug information
Supports ping and traceroute
Syslog remote logging
Network Time Protocol (NTP)
Configuration file for backup and restore; multiple configuration
files available
D CP Relay and UDP elper
System file transfer mechanisms: Xmodem, File Transfer Protocol (FTP),
Trivial File Transfer Protocol (TFTP)
IP address allocation via D CP, bootP
Network Time Protocol
Link Layer Discovery Protocol (LLDP / LLDP-MED)
3Com Management Applications:
• 3Com Enterprise Management Suite for flexible, extensible
management in advanced enterprise IT environments
• 3om Intelligent Management Center, Enterprise Edition for
comprehensive management with the rich functionality required
to meet the needs of advanced Enterprise networks
• 3Com Network Director for complete, turn-key network
management for the enterprise
• 3Com Network Supervisor for basic, turn-key network management
for mid-market businesses
DIMENSIONS
eight: 43.6 mm (1.7 in or 1 RU)
Width: 440.0 mm (17.3 in)
Depth:
Non-PWR models: 270.0 mm (10.6 in)
PWR models: 427.0 mm (16.8 in)
Weight:
Non-PWR models: 3.3 kg (7.3 lb)
PWR models: 6.3 kg (13.9 lb)
POWER SUPPLY
AC line frequency: 50/60 z
Input voltage: 90-240 VAC
Current rating: 1.0A max.
Power consumption (max.)
26-port: 24 W
50-port: 40 W
26-port PWR: 48 W plus up to 300 W for PoE
50-port PWR: 59 W plus up to 300 W for PoE
PECIFICATION (continued)
63COM 4500 10/100 FAMILY

73COM 4500 10/100 FAMILY
from top: 3Com Switch 4500 26-Port, Switch 4500 PWR 50-Port
ENVIRONMENTAL REQUIREMENTS
Operating temperature: 0° to 40°C (32° to 104°F)
Storage temperature: -10° to 70°C (14° to 158°F)
umidity (operating and storage): 10% to 95% non-condensing
Standard: EN 60068 (IEC 68)
HEAT DISSIPATION (MAX)
26-port: 82 BTU/hour
50-port: 137 BTU/hour
26-port PWR: 163 BTU/hour; excludes heat from PoE
50-port PWR: 203 BTU/hour; excludes heat from PoE
RELIABILITY
(MTBF @ 25°C)
26-port: 47 years (411,000 hours)
26-port PWR: 25 years (221,000 hours)
50-port: 38 years (334,000 hours)
50-port PWR: 22 years (189,000 hours)
IEEE STANDARDS SUPPORTED
IEEE 802.1D (STP)
IEEE 802.1p (CoS)
IEEE 802.1Q (VLANs)
IEEE 802.1w (RSTP)
IEEE 802.1X (Security)
IEEE 802.3 (Ethernet)
IEEE 802.3ab (1000BASE-T)
IEEE 802.3ad (Link Aggregation)
IEEE 802.3af (Power over Ethernet)
IEEE 802.3i (10BASE-T)
IEEE 802.3u (Fast Ethernet)
IEEE 802.3x (Flow Control)
IEEE 802.3z (1000BASE-X)
RFC STANDARDS
RFC 783 (TFTP)
RFC 791 (IP)
RFC 793 (TCP)
RFC 826 (ARP)
RFC 951 (BootP)
RFC 1157 (SNMP)
RFC 1723 (RIP)
RFC 1305 (NTP)
RFC 2131 (D CP client)
RFC 2236 (IGMP Snooping)
RFC 2284 (EAP over LAN)
RFC 2819 (RMON)
MANAGEMENT, INCLUDING MIBS SUPPORTED
RFC 1212 (Concise MIB definitions)
RFC 1213/2233 (MIB II)
RFC 1493 (Bridge MIB)
RFC 1724 (RIP v2 MIB Extension)
RFC 1907 (SNMP v2c, SMI v2 and Revised MIB-II)
RFC 2021 (RMON II Probe Config MIB)
RFC 2233 (Interfaces MIB)
RFC 2571 (SNMP Framework)
RFC 2572-2575 (SNMP)
RFC 2665 (EtherLike MIB)
RFC 2667 (IP Tunnel MIB)
RFC 2674 (VLAN MIB Extension)
RFC 2737 (Entity MIB)
RFC 2819 (RMON MIB)
EMISSIONS / AGENCY APPROVALS
CISPR 22 Class A
FCC Part 15 Class A
EN 55022 1998 Class A
EN 61000-3-2 2000, 61000-3-3
ICES-003 Class A
VCCI Class A
IMMUNITY
EN 55024
SAFETY AGENCY CERTIFICATIONS
UL 60950
IEC 60950-1
EN 60950-1
CAN/CSA-C22.2 No. 60950-1-03
WARRANTY AND OTHER SERVICES
Limited Lifetime ardware Warranty, including fans and power supply
Limited Software Warranty for 90 days
Advance ardware Replacement with Next Business Day shipment in most
regions
Limited Lifetime software updates
90 days of telephone technical support
Refer to www.3com.com/warranty for details.
PECIFICATION (continued)

3Com Switch 4500 26-Port 3CR17561-91
3Com Switch 4500 50-Port 3CR17562-91
3Com Switch 4500 PWR 26-Port 3CR17571-91
3Com Switch 4500 PWR 50-Port 3CR17572-91
TRAN CEIVER
1000BASE-SX SFP 3CSFP91
1000BASE-LX SFP 3CSFP92
1000BASE-T SFP 3CSFP93
1000BASE-L SFP 3CSFP97
3COM GLOBAL ERVICE
3Com Network ealth Check, Installation Services and
Express Maintenance www.3com.com/services_quote
3Com University Courses www.3com.com/3comu
8 3COM 4500 10/100 FAMILY
3Com Corporation, Corporat H adquart rs, 350 Campus Driv , Marlborough, MA 01752-3064
3Com is publicly trad d on NASDAQ und r th symbol COMS.
Copyright © 2009 3Com Corporation. All rights r s rv d.
3Com and th 3Com logo ar r gist r d trad marks, and Guardian and Expr ss ar s rvic marks, of 3Com Corporation in various countri s worldwid . H3C is a
r gist r d trad mark of H3C T chnologi s Co., Ltd., a wholly own d subsidiary of 3Com Corporation. All oth r company and product nam s may b trad marks of
th ir r sp ctiv compani s. Whil v ry ffort is mad to nsur th information giv n is accurat , n ith r 3Com nor H3C acc pt liability for any rrors or mistak s
which may aris . All sp cifications ar subj ct to chang without notic . 400952-012 06/09
Visit www.3 om. om for more information about 3Com network solutions.
ORDERING INFORMATION
PRODUCT DE CRIPTION 3COM KU

SWITCHING
DATA SHEET
OVERVIEW
The 3Com®Switch 4500G Gigabit amily delivers
flexible quad-speed performance—10/100/1000 and
10-Gigabit—and advanced voice-optimized features
such as Power over Ethernet (PoE) and auto-voice
VLAN and QoS. This makes the Switch 4500G ideal for
medium businesses and small enterprises seeking to
build a secure converged network.
KEY BENEFITS
MANAGED LAYER 2 AND LAYER 3 GIGABIT
CONNECTIVITY
Wirespeed Layer 2 Gigabit switching with dynamic
Layer 3 Gigabit routing make the Switch 4500G ideal
for wiring closet, workgroup and small core
connectivity requirements. In addition, four of the
ports are dual-personality, operating either as
10/100/1000 or S P-based fiber providing greater
flexibility. These switches also accommodate up to
four extra optional 10-Gigabit high-speed links,
enabling connectivity to a core network or to high-
performance servers.
SECURE
Enterprise-class security features include IEEE 802.1X
network login, SSH/SSL encrypted device login, and
Access Control Lists, protecting mission-critical
business applications.
VOICEREADY
Minimize the cost and complexity associated with
adding or moving IP telephones: the Switch 4500G
detects the presence of IP phones and dynamically
assigns switch ports to the voice VLAN, enabling
automated configuration and prioritization of Voice
over IP (VoIP) traffic. Optional PoE models provide
electrical power and data connectivity over a single
Ethernet cable—resulting in significant cost savings
when deploying these phones.
VARIETY OF MODELS
The Switch 4500G is available in four models,
clusterable in any combination up to thirty-two units:
› 3Com Switch 4500G 24-Port:
24 auto-negotiating 10BASE-T/100BASE-TX/
1000BASE-T ports, 4 of which are dual-personality
10/100/1000 or S P Gigabit; two 10-Gigabit dual-port
slots
› 3Com Switch 4500G 48-Port:
48 auto-negotiating 10BASE-T/100BASE-TX/
1000BASE-T ports, 4 of which are dual-personality
10/100/1000 or S P Gigabit; two 10-Gigabit dual-port
slots
› 3Com Switch 4500G 24-Port PWR:
24 auto-negotiating 10BASE-T/100BASE-TX/
1000BASE-T ports, 4 of which are dual-personality
10/100/1000 or S P Gigabit; two 10-Gigabit dual-port
slots; 10/100/1000 ports are PoE-enabled
› 3Com Switch 4500G 48-Port PWR:
48 auto-negotiating 10BASE-T/100BASE-TX/
1000BASE-T ports, 4 of which are dual-personality
10/100/1000 or S P Gigabit; two 10-Gigabit dual-port
slots; 10/100/1000 ports are PoE-enabled
3COM SWITCH 4500G
GIGABIT FAMILY
from top: 3Com Switch 4500G 24-Port, Switch 4500G 48-Port, Switch
4500G PWR 24-Port, Switch 4500G PWR 48-Port
High-performance, secure voice-ready
Gigabit connectivity, ideal for medium
businesses and small enterprises

INVESTMENT ROTECTION
10-Gigabit uplinks and robust IPv6 support future-
proof your network. These switches come with a
limited lifetime warranty covering the unit, power
supply and fan. Also provided is Advanced Hardware
Replacement, with next business day shipment
available in most regions, and telephone support and
limited lifetime software updates.
EM OWERS A LICATION CONVERGENCE
The Switch 4500G family combines high-performance
Gigabit switching, QoS and traffic management
features to help ensure essential applications get the
appropriate priority for efficient utilization of network
resources.
ENHANCES MANAGEMENT AND CONTROL
Easy to use and manage, the Switch 4500G is designed
to increase business productivity by reliably
supporting business applications. Cluster together up
to 32 devices for easy administration, with single IP
management across 3Com switching lines–with mixed
clusters of Switch 4210, 4200G, 4500G and Switch
5500 and Switch 5500G switches.
DELIVERS HIGH ERFORMANCE
The Switch 4500G family provides wirespeed
aggregate switching capacity of up to 176 Gbps and
131 Mpps performance on the 48-port model.
DYNAMIC LAYER 3 ROUTING
Easy-to-administer dynamic Layer 3 routing increases
performance and enhances network security.
ROBUST I V6 SU ORT
Internet Protocol version 6 (IPv6) is the successor to
today's IPv4, bringing many more IP addresses and
higher levels of security. The Switch 4500G supports
this important protocol, delivering IPv6 routing
features like RIPng as well as comprehensive IPv6
management capabilities.
REDUNDANT OWER SYSTEM SU ORT
The two 3Com Switch 4500G PWR models support a
redundant power system (RPS) connection.
RPS units provide these benefits:
› or PWR switches, an RPS can deliver more power
budget for IEEE 802.3af Power over Ethernet than
what the switches alone can provide. or example,
the Switch 4500G PWR 48-port switch has a PoE
power budget of 370 Watts, which means that
approximately half of the ports can provide the full
802.3af PoE power of 15.4 Watts. With an RPS provid-
ing power, all 48-ports can provide a full 15.4 Watts
of PoE power.
› They deliver redundant power to switches so there is
continued operation should the switch unit power
supply fail. This allows for continuous operation of
advanced Enterprise networks, particularly impor-
tant for converged networks running IP phones on
the network.
3Com H3C RPS Systems
3Com switches are compatible with 3Com H3C®RPS
solutions. These are enterprise-class power
redundancy systems that work with many 3Com fixed-
configuration switches. 3Com Corporation
manufactures networking equipment under the H3C
brand for sale into many markets.
The H3C RPS 1000 is 1U high and provides multiple
power output connections to support multiple switch
units at the same time. Two power rectifiers can be
installed for 1+1 load sharing and power redundancy.
It supports switches with -54V RPS connections, and
delivers sufficient power to fully provision all PoE
ports of a switch with full power redundancy.
23COM 4500G GIGABIT FAMILY
KEY BENEFITS (continued)
Switch 4500G, rear, with two modules

33COM 4500G GIGABIT FAMILY
FEATURE HIGHLIGHTS
FEATURE DESCRI TION
Layer 3 dynamic (RIP) routing Gives additional flexibility in deployment to boost network performance
Voice-ready networking Automatic prioritization of voice traffic, secure voice traffic with voice VLAN, and
Power over Ethernet models
IEEE 802.1X network access control Standards-based security combined with RADIUS authentication
RADIUS Authenticated Device Access Authentication of attached devices via MAC address for an additional level of
(RADA) endpoint security
Access Control Lists (ACLs) Enable usage policies at each point of access to the network via the switch
Bandwidth rate limiting and protocol Enforce controls on each port for efficient use of network resources and prioritization
filtering of delay-sensitive VoIP traffic
“Dual-personality” Gigabit Ethernet Choice of copper or fiber media for flexible uplinks
interfaces
Choice of 10G connections Plug-in modules give 10-Gigabit flexibility. Choose X P or S P+ interface types for fiber
links, or copper-based CX4 local connections
100 MB and 1000 MB fiber Use S Ps to add fiber connections to the network. Dual-speed support makes network
connections migration easier
Multicast filtering and Rapid Improve QoS, scalability and network availability
Spanning Tree protocol support
Secure management Authentication and encryption of management traffic via Secure Shell (SSH v2),
SSL/HTTPS, and SNMP v2
3Com Operating System Proven software featured in 3Com premium enterprise switches such as the Switch 8800,
7700, 5500, 5500G and 4200G families and enterprise routers like the Router 6000, 5000
and 3000 families
Service and Support Backed by 3Com Global Services and authorized partners with demonstrated expertise in
network assessment, implementation and maintenance
Switch 4500G 2-Port 10-Gigabit
Module (X P) (3C17766)

43COM 4500G GIGABIT FAMILY
MEDIUM LAN CONFIGURATION SU ORTED BY THE
SWITCH 4500G
3Com®3102
VoIPPhones3ComRouter5012
3ComNBX®V3001
3ComNBXV3000
Ethernet/FastEthernet
GigabitEthernet
10-GigabitEthernet
Internet
3ComSwitch4500G
3Com Switch5500G-EI
3CR17562-91SuperStack3Switch450050-Port
3CR17561-91SuperStack3Switch450026-Port
3CR17561-91SuperStack3Switch450026-Port
3CR17561-91SuperStack3Switch450026-Port
3CR17172-91SuperStack4Switch5500-EIPWR52-Port
3ComWireless7760
AccessPoint
Servers
PCsPCs
PDA/
VoWiFiPhone
Wireless
Laptops
PoweroverEthernet
In the above network, 3Com Switch 4500G and Switch 5500G-EI units are managed as a single cluster.
Warranty 3Com Limited Lifetime Warranty. or as long as the original end user owns the product,
or for five years after 3Com discontinues the of sale of the product, whichever occurs first.
Hardware coverage Covers the complete unit including power supply and fan.
In-warranty hardware replacement* Advanced Hardware Replacement of hardware for the duration of the warranty. In the US
48 contiguous states this is same-day ship with next business day delivery when call
received before noon Pacific time. or Canada, Alaska and Hawaii, this is same-day ship
when call received before noon Pacific time. or the rest of the world, it is next-business-
day ship. Actual delivery times may vary depending on customer location. Reasonable
commercial efforts apply.
Software coverage 90 days for media replacement.
Software updates* Access to releases with incremental software features and bug fixes. or the Switch
4500G, updates are all releases within the licensed 3Com OS software level.
Telephone support* Technical support via phone for 90 days.
Online Knowledgebase support* Access to online troubleshooting tool for the duration of the warranty.
* These services are not included as part of the Warranty and 3Com reserves the right to modify or cancel this offering at any time, without advance notice.
This offering is not available where prohibited by law. Services are effective at warranty start date, and are enabled with product registration. Customers
receive a user ID with eSupport registration.
RODUCT WARRANTY AND OTHER SERVICES

53COM 4500G GIGABIT FAMILY
Switch 4500G PWR 24-Port
(3CR17771-91)
SERVICE AND SU ORT
3Com Global Services offers the resources and talents
of a major corporation plus more than two decades of
experience in resolving network challenges and
delivering business benefits to enterprises around
the world.
Global support with a personalized focus in the local
language helps drive productivity and minimize
expenses. Because 3Com understands both the
technology and the business, we’re the partner you
need to maintain your competitive edge and remain
strong.
Additional Servi e, Support and Training Offerings
3Com GuardianSM Maintenan e Servi e
This service provides comprehensive on-site support and
includes advance hardware replacement, expedited telephone
technical support and software upgrades
3Com ExpressSM Maintenan e Servi e
This service provides speedy access to 3Com shipment of
advance hardware replacements (including a four-hour
option), expedited telephone technical support and software
upgrades
Network Health Che k
An activity-auditing service focused on improving network
performance and productivity
Includes traffic monitoring, utilization analysis, problem
identification, and asset deployment recommendations
Extensive report provides blueprint for action
Network Installation and Implementation Servi es
Experts set-up and configure equipment and integrate
technologies to maximize functionality and minimize business
disruption
or large and complex sites, implementation services include
personalized configuration, project management, extended
testing and coaching on network administration
Proje t Management
Provides extra focus and resources that special projects
demand
3Com engineers manage entire process from initial
specifications to post-project review
Using structured methodology, requirements are identified,
projects planned and progress of implementation activities
tracked
3Com University
Self-paced and instructor-led technology and product
courses, plus certification programs

63COM 4500G GIGABIT FAMILY
All information in this section is relevant to all members of the
3Com Switch 4500G, unless otherwise stated.
CONNECTORS
24-port
24 auto-negotiating 10BASE-T/100BASE-TX/1000BASE-T ports,
4 of which are dual-personality 10/100/1000 or S P Gigabit ports
48-port
48 auto-negotiating 10BASE-T/100BASE-TX/1000BASE-T ports,
4 of which are dual-personality 10/100/1000 or S P Gigabit ports
WR models
IEEE 802.3af in-line power on all 10/100/1000 ports
Support for redundant supplemental power supply (-48 VDC) connector
PWR units with AC power have 370W available for PoE, at maximum 15.4W
per port.
All models
2 rear slots for dual-port 10-Gigabit modules, X P-based or CX4
local connection
RJ-45 console port
PERFORMANCE
24-port
128.0 Gbps switching capacity
95.2 Mpps forwarding rate
48-port
176.0 Gbps switching capacity
131.0 Mpps forwarding rate
All models
Wirespeed performance across ports
Store-and-forward switching; latency <10 µs
LAYER 2 SWITCHING
8,192 MAC addresses in address table
128 static MAC addresses (in addition to default address)
Jumbo rames support
4,094 Port-based VLANs (IEEE 802.1Q)
IEEE 802.3ad Link Aggregation
Control Protocol (LACP); automated and manual aggregation
GARP VLAN Registration Protocol (GVRP)
IEEE 802.1 Q-in-Q double-tagged VLANs
MAC-based VLANs using RADA auto-VLAN assignment
IEEE 802.1ag Service Layer Operations, Administration and Maintenance
(OAM)
12 trunk groups per switch
Auto-negotiation of port speed and duplex
IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
Bridge Protocol Data Unit (BPDU) protection
Internet Group Management Protocol (IGMP v3) snooping on Layer 2
interfaces
iltering for 128 multicast groups
IPv6-ready hardware
LAYER 3 SWITCHING
IEEE 802.3x full-duplex flow control and back pressure
Half-duplex back pressure flow control
Unidirectional Link Detection (UDLD)
Broadcast, Multicast and Unicast traffic suppression
Spanning Tree root guard
Hardware based routing
64 static routes
Dynamic routing (RIP v2); 512 routes
64 virtual IP interfaces
DHCP snooping
DHCP querier (Layer 2)
DHCP tracker
CONVERGENCE
Eight hardware queues per port
Weighted Round Robin queuing
Strict Priority queuing
IEEE 802.1p Class of Service/Quality of Service (CoS/QoS) on egress
Ingress and egress rate limiting
Port-based traffic shaping
Application and protocol blocking
Auto VLAN assignment for voice traffic determined by vendor OUI
DiffServ Code Point (DSCP) priority/expedited remarking of packets
Wake-on-LAN support
IEEE 802.3af Power over Ethernet standards-compliant (PWR models)
SECURITY
IEEE 802.1X network login:
• EAP over LAN (EAPoL) transport with EAP-MD5, PAP,
CHAP, PEAP, and EAP-TLS authentication
• Multiple users per port
• 1024 max online users
TACACS+ network login
Local and RADIUS server authentication
RADIUS session accounting
Automatic VLAN assignment via RADIUS server
Wirespeed packet filtering in hardware
ACLs filter at Layers 2, 3 and 4:
• Source/destination MAC address
• Ethernet type
• Source/destination IP address
• Source/destination TCP port
• Source/destination UDP port
RADIUS Authenticated Device Access (RADA): authenticate devices based
on MAC address against RADIUS server, and assign VLAN
ID and ACL
Port-based MAC address Disconnect Unknown Device (DUD)
IEEE 802.1X user authentication of switch management on switch Telnet
and console sessions; four access privilege levels
Hierarchical management and password protection for
management interface
SNMP v3 encryption
SSH v2 secure CLI access
Secure TP
SSL/HTTPS secure web access
Denial of Service protection
Guest VLAN option
Multiple authentication server realm definitions
Centralized MAC address authentication
AAA authentication
RADIUS/TACACS+ session accounting
Combined MAC and IEEE 802.1X authentication on same port
Black-hole MAC addresses
DHCP Tracker
DHCP snooping, including DHCP Trust
Wirespeed packet filtering in hardware
ARP inspection and IP source guard
ARP spoofing prevention
Trusted management station IP and/or MAC address
Encoded Archival Description (EAD)
CLUSTERED STACKING
Single IP address and management interfaces for centralized control
Compatibility with 4210, 4200G, 4500, 4800G, 5500, 5500G clustering
Up to 255 devices per cluster
MANAGEMENT
CLI via console or Telnet
3Com Operating System / Comware V5
Embedded web management interface
System configuration with SNMP v1, 2c and 3
Comprehensive statistics, including ACL/QoS and IP interface
S ECIFICATIONS

73COM 4500G GIGABIT FAMILY
Remote Monitoring (RMON) groups statistics, history, alarm and events
Many-to-1 port mirroring
Detailed alarm and debug information
Syslog log-host
Configuration file for backup and restore; multiple configuration
files available
DHCP Relay and UDP Helper
System file transfer mechanisms: Xmodem, TP, Trivial TP (T TP),
Secure TP (S TP)
IPv4 management including ping, traceroute, TELNET, and remote ping
IPv6 management including pingv6, tracertv6, Telnetv6, T TPv6,
DNSv6 and ARPv6
IPv6 management interface IP address configuration
Supports multiple software images and bank swap, stored in
nonvolatile memory
Backup and restore of software images
Configuration file for backup and restore, stored in non-volatile memory;
multiple configuration files available
Remote port mirroring (RSPAN)
ront panel indicators for port and unit status information
Network Time Protocol (NTP)
DHCP Relay and UDP Helper
Device Link Detection Protocol (DLDP)
Link Layer Discovery Protocol (LLDP and LLDP-MED)
s low
Power alarms; fan and temperature alarms
Debugging information output
Port loopback detection
3Com management applications:
• 3Com Enterprise Management Suite for flexible, extensible
management in advanced enterprise IT environments
• 3Com Intelligent Management Center, Enterprise Edition for
comprehensive management with the rich functionality required to
meet the needs of advanced Enterprise networks
• 3Com Network Director for complete, turn-key network manage-
ment for the enterprise
• 3Com Network Supervisor for basic, turn-key network management
for mid-market businesses
• 3Com Network Access Manager for IEEE 802.1X and RADA
integration with IAS/Active Directory
• 3Com Switch Manager for virtual clustering support across 3Com
switch families
DIMENSIONS
Height: 43.6 mm (1.7 in or 1 RU)
Width: 440.0 mm (17.4 in)
Depth: non-PWR: 300.0 mm (11.8 in)
PWR: 420.0 mm (16.5 in)
Weight: 24-port: 4.0 kg (8.8 lbs)
48-port: 4.5 kg (9.9 lbs)
24-port PWR: 6.0 kg (13.2 lbs)
48-port PWR: 6.5 kg (14.3 lbs)
POWER SUPPLY
AC Line requency: 50/60 Hz
Input Voltage: 90-240 VAC
Current rating (AC)
24-port: 1.5A
48-port: 2.0A
24-port PWR: AC 8.0A; DC 15.0A
48-port PWR: AC 8.0A; DC 18.0A
ower consumption (max)
24-port: 58 W
48-port: 108 W
24-port PWR: 87 W, plus up to 370W PoE budget
48-port PWR: 133 W, plus up to 370W PoE budget
ENVIRONMENTAL REQUIREMENTS
Operating temperature: 0° to 40°C (32° to 104° )
Storage temperature: -10° to 70°C (14° to 158° )
Humidity (operating and storage): 10% to 95% non-condensing
Standard: EN 60068 (IEC 68)
HEAT DISSIPATION (MAX)
24-port: 196 BTU/hour
48-port: 369 BTU/hour
24-port PWR: 295 BTU/hour
48-port PWR: 454 BTU/hour
RELIABILITY
(MTB @ 25°C)
24-port: 46 years (401,000 hours)
48-port: 35 years (310,000 hours)
24-port PWR: 41 years (362,000 hours)
48-port PWR: 28 years (245,000 hours)
2-port 10-Gigabit module: 371 years (3,255,000 hours)
2-port Local Connect module: 1,798 years (15,758,000 hours)
IEEE STANDARDS SUPPORTED
IEEE 802.1D (STP)
IEEE 802.1p (CoS)
IEEE 802.1Q (VLANs)
IEEE 802.1w (RSTP)
IEEE 802.1X (Security)
IEEE 802.3 (Ethernet)
IEEE 802.3ab (1000BASE-T)
IEEE 802.3ad (Link Aggregation)
IEEE 802.3af (Power over Ethernet)
IEEE 802.3i (10BASE-T)
IEEE 802.3u ( ast Ethernet)
IEEE 802.3x ( low Control)
IEEE 802.3z (1000BASE-X)
RFC STANDARDS
R C 783 (T TP)
R C 791 (IP)
R C 793 (TCP)
R C 826 (ARP)
R C 951 (BootP)
R C 1157 (SNMP)
R C 1723 (RIP)
R C 2080 RIP for IPv6/RIPng
R C 2131 (DHCP client)
R C 2236 (IGMP Snooping)
R C 2284 (EAP over LAN)
R C 2452 IP Version 6 MIB for the Transmission Control Protocol
R C 2454 IP Version 6 MIB for the User Datagram Protocol/UDP6
R C 2460 IPv6 Specification
R C 2461 Neighbor Discovery for IPv6
R C 2462 IPv6 Stateless Address Autoconfiguration
R C 2463 ICMP & Path Discovery
R C 2464 Transmission of IPv6 over Ethernet
R C 2710 Multicast Listener Discovery (MLD) IPv6
R C 2767 Dual stacks IPv4 & IPv6
R C 2819 (RMON)
R C 3513 IPv6 Addressing Architecture
R C 3587 IPv6 Global Unicast Address
Management, including MIBs Supported
R C 1212 (Concise MIB definitions)
R C 1213/2233 (MIB II)
R C 1493 (Bridge MIB)
R C 1724 (RIP Version 2 MIB Extension)
R C 1907 (SNMP v2c, SMI v2 and Revised MIB-II)
R C 2021 (RMON II Probe Config MIB)
R C 2233 (Interfaces MIB)
R C 2571 (SNMP ramework)
R C 2572-2575 (SNMP)
S ECIFICATIONS (continued)

RC 2665 (EtherLike MIB)
R C 2667 (IP Tunnel MIB)
RC 2674 (VLAN MIB Extension)
R C 2737 (Entity MIB)
RC 2819 (RMON MIB)
EMISSIONS / AGENCY APPROVALS
EN 55022 :1998+A1:2000+A2:2003 Class A
CC Part 15 :2004 Class A
ICES-003 :2004 Class A
VCCI :2004 Class A
CISPR 22 :2003 Class A
IEC 61000-3-2:2001/EN 61000-3-2 2000
IEC 61000-3-3:2002/EN 61000-3-3:1995+A1:2001
Korean EMI Class A
ETSI EN 300 386V1.3.3 :2005
IMMUNITY
EN 55024: 1998+A1:2001+A2:2003
ETSI EN 300 386 V1.3.3 :2005
SAFETY AGENCY CERTIFICATIONS
UL 60950-1:2003
EN 60950-1:2001
CSA 2.22 # 60950-1:2003
IEC 60950-1:2001
EU RoHS Compliant
WARRANTY AND OTHER SERVICES
Limited Lifetime Hardware Warranty, including fans and power supply
Limited Software Warranty for 90 days
Advance Hardware Replacement with Next Business Day shipment in most
regions
Limited Lifetime software updates
90 days of telephone technical support
Refer to www.3com.com/warranty for details.
3Com Switch 4500G 24-Port 3CR17761-91
3Com Switch 4500G 48-Port 3CR17762-91
3Com Switch 4500G PWR 24-Port 3CR17771-91
3Com Switch 4500G PWR 48-Port 3CR17772-91
MODULES
Switch 4500G 1-Port 10-Gigabit Module (X P) 3C17768
Switch 4500G 2-Port 10-Gigabit Module (X P) 3C17766
Switch 4500G 2-Port 10-Gigabit Module (S P+) 0231A98L
Switch 4500G 2-Port 10-Gigabit Local Connection Module 3C17767
GIGABIT SF TRANSCEIVERS
1000BASE-SX S P 3CS P91
1000BASE-LX S P 3CS P92
1000BASE-LH S P 3CS P97
FAST ETHERNET SF TRANSCEIVERS
100BASE- X S P (Dual-Mode) 3CS P9-81
100BASE-LX S P (Dual-Mode) 3CS P9-82
10GIGABIT XF TRANSCEIVERS
10GBASE-LR 0231A438 or 3CX P92
10GBASE-SR 0231A494 or 3CX P94
10GBASE-CX4 3CX P95
10GBASE-ER 0231A72X or 3CX P96
10GIGABIT SF + TRANSCEIVERS
10GBASE-LR 0231A0A8
10GBASE-SR 0231A0A6
10GBASE-LRM 0231A0A7
CABLES
CX4 Local Connection Cable – 50 cm 3C17775
CX4 Local Connection Cable – 100 cm 3C17776
CX4 Local Connection Cable – 300 cm 3C17777
3COM GLOBAL SERVICES
3Com Network Health Check, Installation Services and
Express Maintenance www.3com.com/services_quote
3Com University Courses www.3com.com/3comu
8 3COM 4500G GIGABIT FAMILY
3Com Corporation, Corporat H adquart rs, 350 Campus Driv , Marlborough, MA 01752-3064
3Com is publicly trad d on NASDAQ und r th symbol COMS.
Copyright © 2009 3Com Corporation. All rights r s rv d.
3Com and th 3Com logo ar r gist r d trad marks, and Guardian and Expr ss ar s rvic marks, of 3Com Corporation in various countri s worldwid . H3C is a
r gist r d trad mark of H3C T chnologi s Co., Ltd., a wholly own d subsidiary of 3Com Corporation. All oth r company and product nam s may b trad marks of
th ir r sp ctiv compani s. Whil v ry ffort is mad to nsur th information giv n is accurat , n ith r 3Com nor H3C acc pt liability for any rrors or mistak s
which may aris . All sp cifications ar subj ct to chang without notic . 401003-010 09/09
Visit www.3 om. om for more information about 3Com network solutions.
ORDERING INFORMATION
RODUCT DESCRI TION SKU RODUCT DESCRI TION SKU
S ECIFICATIONS (continued)