3Com Switches User manual

10/100/1000 Mbps networking solutions
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The only certainty in networks today
is that bandwidth demands will
continue to increase. As more com-
plex and time-sensitive applications
such as voice and video are created
for the desktop, a higher volume of
traffic is generated throughout the
network. This results in network bot-
tlenecks that can cause performance
problems within workgroups, to and
from servers, and across the back-
bone. Switching technology has
proven to be the most cost-effective,
flexible, and least disruptive way to
add and manage bandwidth at every
level of your network.
3Com has the broadest array of
switching solutions to match your
particular requirements. To safeguard
your investment, we offer a family
of stackable switches that delivers
Ethernet, Fast Ethernet, Gigabit
Ethernet, ATM technologies, and
Layer 3 switching to solve any
performance problem. No matter
which product you start with today
in one area of your network, you can
be assured of a complete migration
path and compatible solutions to
take you to the next step tomorrow.
And that covers everything from the
desktop to the backbone.
Make any of the SuperStack®II
switches part of a 3Com®SuperStack
system. The SuperStack II product
family offers scalable multitechnology
connections, integrated management
with a common look and feel, and
optional uninterruptible and
redundant power systems.
For those who require the high
quality, reliability, and robustness of
the 3Com SuperStack II family, but
without management capabilities,
the SuperStack II family of Baseline
switches provides a cost-effective
range of products in a variety of
port densities.
Key Benefits
Protects your investment. The
3Com SuperStack II switching
family protects your investment
by delivering low cost of owner-
ship, end-to-end compatible
solutions, and smooth migration
from lower to higher bandwidth
technologies.
Ships with 3Com Transcend®
Networ Supervisor. C-based
application providing powerful,
yet easy-to-use network man-
agement tuned to the needs of
small-to-medium enterprises.
Delivers the capabilities you
need. Autosensing 10/100
Mbps, advanced stackability,
multimedia, VLAN support,
RMON, and Layer 3 switching
help you to build the most effi-
cient and responsive network for
your company.
Year 2000 compliance. All
SuperStack II switches are Year
2000 compliant.
+5 lifetime limited warranty.
Available on SuperStack II
Switch 610, 1100, 3300,
3300 FX, and 3300 XM.
Free 90-day telephone tech-
nical support. 3Com offers
assistance with installation,
configuration, and trouble-
shooting, in addition to the
3Com Knowledgebase
Web service.
The SuperStack II family of switches
makes high-performance, low-cost
switching a reality at the desktop,
workgroup, and backbone.
data sheet
®
Switches
Flexible, affordable 10/100/1000 Mbps
stackable switches for boosting performance
at the desktop, workgroup, and backbone
3Com®SuperStack®II

2
raw bandwidth of Gigabit Ethernet,
ATM provides alternative methods for
delivering effective backbone solutions,
such as Quality of Service (QoS), which
guarantees bandwidth to applications.
The control offered by ATM enables
the deterministic delivery of applications
and services in complex network
environments.
Layer 3 Switching
Intranets and extranets, while proving
indispensable for companies of all sizes,
are also causing new traffic management
problems. Hypertext links between
servers and e-mails create any-to-any
traffic that are overwhelming legacy
LAN routers. As a result, companies are
experiencing more bottlenecks between
subnetworks. Layer 3 switching solves
these intranet bottleneck problems by
embedding classical routing in the
switch hardware that routes traffic at
high speeds while intelligently isolating
faults, containing broadcast traffic, and
providing seamless subnet/VLAN
connections.
SuperStac II
Switches for All Your
Technology Needs
Today, your desktop population
probably requires a mix of 10 Mbps and
100 Mbps service to meet the individual
demands of your users. As you deliver
higher speeds to the desktop, server
connections may become strained, so you
need options to scale to Fast Ethernet,
Gigabit Ethernet, or ATM for high-speed
desktop and server connections as well as
in the backbone. With the SuperStack II
family of switches, you can support all
of your bandwidth requirements with
the appropriate technology and the
appropriate level of control.
Ethernet
Today, Ethernet is the most popular
topology for implementing local area
networks. Ethernet provides bandwidth
that can be either shared across a number
of users using hubs, or dedicated to
workstations using switched technology.
The availability of low-cost Ethernet
switches has also made it possible to
deliver dedicated 10 Mbps full-duplex
links to the desktop, for affordable high-
performance, high-functionality, and
highly manageable networks.
Fast Ethernet
Fast Ethernet, based on the Ethernet
standard, is a high-speed technology that
runs over your existing infrastructure,
works with your existing management
systems, and requires no retraining by
your IT staff. Fast Ethernet is one of the
most popular high-speed technologies
because it’s cost effective, stable, and
compatible with existing Ethernet LAN
environments. Fast Ethernet runs over
fiber and copper. For greater perfor-
mance, full-duplex is also supported.
10/100 Ethernet/Fast Ethernet
10/100 Ethernet/Fast Ethernet with
autosensing capability is one of the
most economical and flexible ways to
add bandwidth immediately—while
maintaining migration options to
higher bandwidth in the future. 10/100
technology combines conventional
10BASE-T and high-speed 100BASE-
TX support in one device, delivering
higher bandwidth to the desktop,
aggregating 10/100 hubs, and
maintaining the status quo for those
who are efficiently served by 10 Mbps
Ethernet. With 10/100 autosensing
functionality, there is no need to
configure individual switched ports.
The switch automatically senses the
speed of the connected end device
(either 10 Mbps or 100 Mbps) and
channels the data through at the
appropriate speed.
Gigabit Ethernet
Gigabit Ethernet retains the traditional
simplicity and manageability of
Ethernet and Fast Ethernet, making it
easy to integrate with existing LAN
equipment. It allows a tenfold increase
in backbone bandwidth over Fast
Ethernet with minimal impact on
support staff. The extra bandwidth
helps you deal with unplanned changes
and additions to the network, and
frees you from constantly tuning the
network. Gigabit Ethernet is a powerful
backbone/server solution because it
delivers phenomenal bandwidth cost
effectively, preserves the Ethernet frame
format, and works with your existing
traffic management systems.
ATM
ATM is an established LAN backbone
technology that offers significant
benefits to larger organizations by
providing tight integration between
LAN and WAN environments and
offering high levels of resilience and
redundancy. In the LAN environment,
OC-3c (155 Mbps) and OC-12c
(622 Mbps) connections are used to
communicate across the network. While
these connections do not provide the
In This Guide:
SuperStack II Switches for All Your Technology Needs .......................................................2
Features Supported for SuperStack II Switches .................................................................4
roduct Configurations (Diagrams) ................................................................................6–7
New roducts
SuperStack II Baseline 10/100 Switches .....................................................................8
SuperStack II Switch 610.............................................................................................9
SuperStack II Switch 1100/3300 Family...............................................................10-12
SuperStack II Switch 1100 and 3300—Optional High-Speed Accessories ............13-14
SuperStack II Switch 3800.........................................................................................15
SuperStack II Switch 3900 and Switch 9300..............................................................16
SuperStack II Switch 9000.........................................................................................18
SuperStack II Switch 9100.........................................................................................19
SuperStack II Switch 2200.........................................................................................20
SuperStack II Switch 2700.........................................................................................20
Network Management ...............................................................................................21
SuperStack II Switches at a Glance ............................................................................22–23
Specifications.............................................................................................................24–27
Technology Supported for SuperStack II Switches...........................................................25
Ordering Information .......................................................................................................28

Backbone WAN/SNA ost
Power Systems
Transcend Network
Management Architecture
RMON-2 Probes
Open ub
Access Servers
SDLC Converters
Routers
Switches
ubs
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SuperStac ®II Systems
The 3Com®SuperStack®II system gives you a flexible,
cost-effective connectivity solution for local, wide area,
and SNA networks. You can combine diverse technologies
and network services in one stacked system, strengthen it
with uninterruptible and redundant power systems, and
manage it all with Transcend®network management and
control solutions.
As an important part of the 3Com Transcend Networking
framework, SuperStack II systems will meet your evolving
network needs—future proofing your network investment.
A single SuperStack II system provides connections for a
range of network environments and protocols: Ethernet,
Fast Ethernet, Layer 3 switching, Gigabit Ethernet, Token
Ring, FDDI, ISDN, X.25, Frame Relay, and ATM. Depending
on your needs, you can build SuperStack II systems for
virtually any network environment. Capabilities include:
■Hubs for flexible workgroup connectivity that feature
SNM , RMON, and Web-based management
■Industry-leading physical layer support for Token Ring
networks, including Token Ring switching
■Full SNM , RMON, and Web-based management for
Ethernet, Fast Ethernet, Gigabit Ethernet switches, as
well as a dedicated RMON-1/RMON-2 probe
■Full range of switches to increase performance in
high-speed client/server LANs
■Full, multiprotocol network access for telecommuters or
users at other off-site locations
■Routing between central site and branch offices
using innovative Boundary Routing®architecture or
conventional routing software for multiple WAN choices,
including ISDN
■SNA-to-LAN conversion linking local and remote offices
to an SNA host system
■Choice of power systems to ensure uninterrupted
network operation
For smaller offices of fewer than 20 users, our
OfficeConnect®products can be used to complement
SuperStack II systems.

4
Features
Stackability
Four SuperStack II Switch 1100 or
Switch 3300 units can be interconnected
to form a stack that offers unrivaled
performance and management features.
Each unit has a built-in connector at
the rear of the unit called the matrix
port. Two units can be connected back-
to-back with a SuperStack II Switch
matrix cable. To connect more than two
units, a SuperStack II matrix module can
be inserted into the high-speed module
slot of one of the units in the stack, and
a matrix cable can be used to connect to
each switch in the stack.
Stacking provides the user with a
plethora of benefits. These include the
ability to manage in excess of 100 ports
as a single logical entity. Configuration
is therefore faster and simpler. Stacking
also provides the user with the optional
resilient IP addresses across the stack.
Thus if a failure should occur, the
resilient IP address can be used for
management stacking using the
SuperStack II Switch matrix module
and cable, keeping front panel ports
free and increasing the number of
matrix ports in an aggregated system.
Management
Transcend®network management
All SuperStack II switches are managed
by 3Com Transcend®network manage-
ment and control solutions. Transcend
solutions give you end-to-end visibility
Features Supported for
SuperStac II Switches
Disconnect Unauthorized
Device (Security)
ranscend network
management support
Stackable with matrix
module & cable
Web-based
management
PACE technology
RMON support
Flow control
(IEEE 802.3x)
Roving Analysis Port
IEEE 802.1D
(incorporating 802.1p)
Dual queues
and control over all devices in your
network with two levels of management:
1) technologies, such as embedded
SmartAgent®software and RMON,
within 3Com devices throughout the
network, and 2) centralized highly
automated applications at the network
center for monitoring, configuring, and
troubleshooting all devices in the network.
Ships with 3Com Transcend
Network Supervisor
This PC-based application provides
powerful, yet easy-to-use network
management tuned to the needs of small-
to-medium enterprises. Network devices
are automatically discovered and network
activity and stress monitored through an
intuitive graphical interface focused on the
tasks and information all managers need
to take control of their network.
Web-based management
Manage your switches with any Web
browser, either through direct or dial-up
connection or across the LAN. This
delivers ease of use and accessibility to
network management personnel and
reduces in-service costs, but still with
full security.
Security—Disconnect nauthorized
Device (D D)
LAN security architecture with DUD
automatically disconnects unauthorized
devices from the LAN.
Roving Analysis Port (RAP)
RAP allows a network analyzer attached
to any unit in a stack to monitor any of
the switch ports or virtual LANs
(VLANs) in the stack. It also minimizes
the time required for problem determi-
nation and resolution and maximizes
switch uptime, thereby lowering your
cost of ownership.
RMON support
Transcend software’s powerful combi-
nation of RMON (Remote Monitoring,
a superset of SNMP MIB II) and
embedded SmartAgent software reduces
the processing burden on your manage-
ment station, minimizes network traffic,
and saves time by automatically moni-
toring and analyzing your network.
RMON tells you at a glance how the
network is performing and who is using
it the most. And Transcend software
gives you the added benefit of RMON
features in your network without the
processing and memory costs usually
associated with RMON. See the At-
a-Glance RMON Support table on
page 24 for details on RMON groups
supported by SuperStack II switches.
Class of Service (CoS)
CoS can be defined simply as a method
for prioritizing various traffic types.
3Com switches can support two methods
of enabling CoS on Ethernet networks.
The first method is IEEE 802.1D
(incorporating 802.1p), which enables
eight levels of prioritization; and the
second method is 3Com’s innovative
PACE®technology, which allows the
user to specify certain applications as
high priority. A hardware feature, dual
queues, is used to exploit these traffic
prioritization schemes; the dual queues
function—required for CoS—will
Half-duplex
Flow Control-I
Ships with ranscend
Network Supervisor
SuperStack II Baseline 10/100 Switch ●●
SuperStack II Switch 610 ●●●●●●●● ●●●
SuperStack II Switch 2200 ●●●
SuperStack II Switch 2700 ●●
SuperStack II Switch 1100 ●●●●●●●●●●●●
SuperStack II Switch 3300 ●●●●●●●●●●●●
SuperStack II Switch 3300 XM ●●●●●●●●●●●●
SuperStack II Switch 3300 FX ●●●●●●●●●●● ●
SuperStack II Switch 3800 ●●●●●● ● ●
SuperStack II Switch 3900 ●●●●●●● ●
SuperStack II Switch 9000 ●●●●●● ● ●
SuperStack II Switch 9100 ●●●●●●● ●●●
SuperStack II Switch 9300 ●●●●●●● ●
■Optional—Achieved with SuperStack II Switch Layer 3 plug-in module

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VLANs
VLANs allow PCs, workstations, and
other resources, including printers and
file servers, to be organized into logical,
broadcast domains so that only devices
within the same domain can commu-
nicate with each other. 3Com switches
allow users to implement VLANs on
their network using one of two schemes:
IEEE 802.1Q, including GVRP, which
enables the auto-learning of VLANs, or
3Com’s VLT. Both methods allow for the
configuration of VLANs based on ports
and/or MAC addresses for maximum
flexibility and security. For 802.1Q
VLANs, a port on a switch can be
assigned to a VLAN; all other switches
learn about that VLAN when the
switches automatically communicate that
knowledge via the GVRP protocol.
Switches supporting both VLAN
schemes can be used to provide seamless
migration from VLT to IEEE 802.1Q
environments that preserve investment
in current LAN developments and
equipment.
Layer 3 Support
Multicast filtering using IGMP
snooping
Multicast filtering enables the automatic
configuration of filters for IP multicast
traffic, such as video and audio broad-
casts, allowing advanced multimedia
applications to be delivered easily to the
workgroup.
Fast IP
Fast IP is 3Com’s standards-based cut-
through routing solution for all types
of legacy routing network backbones.
This reduces traffic flow through router
bottlenecks and maximizes performance
by utilizing the switched infrastructure.
Layer 3 switching
Layer 3 switching is the implementation
of routing protocols in leading-edge
ASIC technology. Routing performance
is dramatically and cost effectively
boosted to enable the widespread
deployment of intranets (IP-based
networking).
automatically enable a second port
buffer for high-priority traffic thereby
allowing the traffic to bypass lower pri-
ority data for faster processing within
the switch.
Traffic Management
Flow control
Flow control is an essential switch
feature that eliminates dropped packets
on congested ports. To provide switch
application flexibility, 3Com switches
support flow control schemes suited to
both full- and half-duplex environments.
Intelligent Flow Management (IFM)
is a solution designed to work in half
duplex, for example, a hub aggregation
application. A solution using IEEE
802.3x is also supported and designed
for full-duplex connections, such as
desktop switching; this method of flow
control is set automatically using the
autosensing features of SuperStack II
switches.
Broadcast traffic control
Traditional Ethernet switches suffer from
the threat of broadcast storms that can
potentially bring networks to a halt.
However, all SuperStack II switches
can be configured with broadcast storm
protection to limit the number of
broadcast packets allowed to be
forwarded by each port. This allows the
SuperStack II switches to offer the
security of broadcast storm protection
normally associated with a router while
also providing the protocol independence
of a switch.
Network Availability
Backup power supplies
3Com gives you all the choices you
need to ensure constant power to your
stackable switches. Both the Advanced
Redundant Power System (ARPS) and
the Uninterruptible Power System
(UPS) work with any SuperStack II
switch. The ARPS is ideally suited as a
backup for individual power supplies in
the SuperStack II units. The UPS fully
protects your SuperStack II system
from the effects of brownouts or spikes
that occur in outside power lines.
Resilient links
3Com’s simple and flexible resilient
links technology ensures fault tolerance
via redundant connections to other
network devices.
Spanning tree
Support for the industry-standard
IEEE 802.1D spanning tree protocol is
provided as an alternative to resilient
links. This protects against network
loops and can be used to provide
redundant network paths.
Port trunking
Port trunking establishes backbone
links by treating multiple parallel links
as a single network pipe. Trunking also
provides link redundancy; traffic on
any failed link comprising a network
trunk automatically switches over to
the other links in the trunk.
Resilient links
UPS backup power
supplies
VLAN (IEEE 802.1Q )
Spanning tree
Broadcast traffic control
Intelligent
switching mode
Layer 3 switching
runking
Fast IP
Multicast filtering using
IGMP snooping
Full duplex on all
ports
l-IFM
VLAN (VL )
●●●
●●●●●●●●●●●●
●●
●●
●●●●●●●●●●●●■
●●● ● ●● ●● ●●● ■
●●● ● ●● ●● ●●●
●●● ●●● ●● ●●●■
●● ●●● ●
●● ● ● ●● ●●
●● ●●● ●
●● ● ●● ●
●●● ● ● ●● ●●
ARPS/ ype 2 backup
power supplies

6
User running
multimedia
Floor 1
Basement
Floor 2
Floor 3
Switched 10 Mbps workgroup
Switched 10 Mbps
workgroup ower users on
dedicated 100 Mbps
rint server on
100 Mbps
Server farm
Volume intranet
user on dedicated 10 Mbps
Transcend® network
management console
SuperStack® II system with
SuperStack II Switch 3300
and 1100
SuperStack II system with
SuperStack II Switch 1100
SuperStack II Switch 3300*
Type 2 AR S and SuperStack II
Switch Layer 3 module
SuperStack II system
with SuperStack II
Switch 3300
Mixed/shared
100 Mbps
and 10 Mbps users
rinter on
10 Mbps
SuperStack II
Enterprise Monitor probe
* For fiber connectivity, use the
SuperStack II Switch 3300 FX.
100 Mbps
10 Mbps
Fast Ethernet LAN and WAN connectivity
A medium-sized corporation supporting a mixture of switched
and shared workgroups has a central Fast Ethernet backbone.
In the basement, a stack of SuperStack II Switch 3300s provides
Fast Ethernet 10/100 Mbps links to the floors and 10/100
connections for local servers, and it also provides the ability to
scale to Gigabit Ethernet when needed. The entire network is
managed at the Transcend network management console or
via Web-based management at any browser. Intranet traffic
is managed simply and cost effectively when a SuperStack II
Switch Layer 3 module is plugged into a SuperStack II
Switch 3300.
On the first floor, a stack of SuperStack II Switch 1100s provides
dedicated switched 10 Mbps for those users using simple appli-
cations such as mail.
On the second floor, the SuperStack II Dual Speed Hub 500 with
a mixture of 100 Mbps and 10 Mbps users is connected to a
switched 100 Mbps backbone via the data center SuperStack II
Switch 3300 stack.
On the third floor, a SuperStack II Switch 1100 and 3300 stack
provides dedicated switched 10 Mbps and 10/100 Mbps to
power users for transferring large files and multimedia traffic.

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SuperStack II Switch 3900
Local server
Switched Fast Ethernet
high-speed power users
Switched
10 Mbps
Volume intranet
user
SuperStack
®
II system with
SuperStack II Switch 3300
and U S
SuperStack II Switch 9300
**
and Type 2 AR S
C running multimedia
videoconferencing
ower users on
switched Fast
Ethernet
Users on
switched Fast
Ethernet
Gigabit
Ethernet
SuperStack II system with
SuperStack II Switch 3900
*
Floor 1
Basement
Floor 2
Floor 3
Gigabit
Ethernet
Gigabit Ethernet
(1000 Mbps)
server farm
Switched
Ethernet
Transcend® network
management console
Existing desktop Local server using
100 Mbps
Servers using
100 Mbps
SuperStack II Switch 3300
and SuperStack II Switch 1100
and U S
*For 10/100/1000 Mbps Layer 3
switching, use the SuperStack II
Switch 3800.
** For Gigabit Ethernet Layer 3 switching,
use the SuperStack II Switch 9000.
0
5
10
15
20
25
30
100 Mbps
1000 Mbps
10 Mbps
Gigabit Ethernet LAN and WAN connectivity
An organization supporting a mixture of 10/100 Mbps switched
and shared desktop connections has migrated to a Gigabit
Ethernet backbone.
3Com has taken an early lead in the Gigabit Ethernet market by
providing the ability to utilize this new high-speed technology
while protecting your existing network infrastructure investment.
In this configuration, the SuperStack II system in the basement
comprises a Switch 9300, a Switch 3900, and an Advanced
Redundant ower System for added resilience. The Switch 9300
provides the Gigabit Ethernet switching backbone and links
to Gigabit Ethernet servers while the Switch 3900 provides
unconstrained access to a large Fast Ethernet server farm. This
configuration provides the fastest backbone solution and fastest
server access for all floors.
On the first floor, the SuperStack II Switch 3900 provides line-
rate services to power users directly connected to switched Fast
Ethernet ports.
On the second floor, the SuperStack II Switch 3300 and Switch
1100 provide network connectivity to switched 10 Mbps and
100 Mbps users, and the use of an optional SuperStack II Switch
1000BASE-SX module provides Gigabit Ethernet support.
On the third floor, the SuperStack II Switch 3300 provides line-
rate services to power users on switched Fast Ethernet as well
as switched 10 Mbps services to less demanding users, and con-
nects shared 10 Mbps and 10/100 hubs to the Gigabit Ethernet
backbone. The network is managed at the Transcend network
management console.

8
The 3Com SuperStack II Baseline
10/100 switches provide the highest
performance product in the SuperStack II
Baseline family. Delivering the power of
switched Fast Ethernet while automati-
cally sensing the speed of the connected
devices, the SuperStack II Baseline
switches are ideal for any environment
where raw power and performance are
needed, but management is not
required. The Baseline 10/100 switches
can be used as an aggregation device
connecting to other switches or hubs,
or to provide cost-effective, high-
performance desktop connections.
The Baseline 10/100 switches
provide 12 or 24 10/100BASE-TX
(Fast Ethernet) switched ports that
automatically detect the speed of
connected devices, optimizing network
performance to 100BASE-TX, where
applicable. The SuperStack II Baseline
switches are unmanaged and work
straight out of the box.
Key features include:
■12 or 24 RJ-45 10BASE-T/
100BASE-TX autosensing ports
provide the ultimate in high-speed
switching connectivity.
■Autonegotiating full-/half-duplex
operation on each port doubles the
speed of each network connection
to 200 Mbps.
■MAC addresses support up to
4,000 network devices on your
local area network.
■IEEE 802.3x Flow Control ensures
network traffic is not lost during
peaks in traffic rates on high-
throughput, full-duplex links.
■19” size for easy installation in a
wiring closet. A rackmounting kit
is supplied. The product can also
be used free-standing.
■Diagnostic LEDs indicate network
traffic and port status of each port,
making it easy to spot-check faults
and check individual port status.
■3Com lifetime limited warranty
■Connection for the SuperStack II
Advanced Redundant Power
System provides ultimate protec-
tion against network downtime.
The SuperStack II Advanced
Redundant Power System and
Uninterruptible Power System are
also available from 3Com.
SuperStac II Baseline 10/100 Switches
SuperStack II Baseline 10/100 Switches
Front view of 24 port
Back view
24 ports (RJ-45) LEDs for link status
and network traffic
Advanced R S
connector
(Type 2)
MDI/MDIX
switch
Front view of 12 port
LEDs for link status
and network traffic
MDI/MDIX
switch
12 ports (RJ-45)

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9
When you need low-cost 10 Mbps and
10/100 Mbps switching coupled with
high levels of performance and man-
ageability, then look no further than
the SuperStack II Switch 610.
The SuperStack II Switch 610 is
based on the high-performance
BRASICA™II architecture found in the
SuperStack II Switch 1100 and 3300,
offering high levels of performance and
manageability at an unsurpassed price.
About the Switch
The SuperStack II Switch 610 is perfect
for desktop connectivity and can sup-
port up to 6,000 MAC addresses.
Switch 610 is available in a 24-port
version and features two built-in
autosensing 10/100 Mbps Fast Ethernet
ports. (As with other SuperStack II
switches, the Switch 610 features
autosensing 10/100 Mbps ports that
adjust for 10BASE-T and 100BASE-
TX attached devices.) It automatically
provides full-duplex/half-duplex
capability on all ports to boost
bandwidth for servers and power users.
The SuperStack II Switch 610 sup-
ports the following features:
■Web browser interface to locate
management and configuration
functions
■Resilient links and spanning tree
■Optional SuperStack II backup
power supplies
■Elastic port buffering, enabling
on-the-fly allocation of memory for
automatic performance optimization
based on network traffic
■RMON - 7 groups and RAP
■Dual queues to facilitate traffic
prioritization
■Multicast filtering using IGMP
snooping/GMRP
■Flow control improves performance
and minimizes packet loss under
heavy network loading
■VLT VLAN tagging protects
investment infrastructure
■802.1Q standard-based VLANs with
GVRP support to facilitate dynamic
VLAN membership
SuperStac II Switch 610 for Ethernet and Fast Ethernet
AC connection Advanced Redundant ower System connection
24 switched 10BASE-T/RJ-45 ports 2 10/100BASE-TX ports
Back view
Front view of 24 port
SuperStack II Switch 610

10
SuperStac II Switch 1100/3300 Family for Ethernet, 10/100 Fast Ethernet, and
Fiber Switching
Companies today realize that the
booming e-business marketplace is pro-
viding them with amazing growth
opportunities. To take advantage of
these opportunities and sustain this
growth, IT managers must find a way
to boost network performance in synch
with their evolving e-business require-
ments. 3Com has developed a family of
modular, stackable switches designed to
help fast-growing companies add power
and performance to their networks
easily, economically, and with min-
imum disruption.
The SuperStack II Switch
1100/3300 family includes four high-
performance switches that can be
mixed and matched to achieve the per-
fect combination of cost and features
for desktop, workgroup, and backbone
aggregation. This is the first family of
switches that enables IT managers to
create a “virtual stack” of different
switches that act as one logical
switch—providing an easy and afford-
able way to build performance and
capabilities into the network as needed.
Each switch has a built-in matrix
port connector at the rear of the unit.
Two units can be connected with a
low-cost SuperStack II Switch matrix
cable; three or more units can be
stacked using a SuperStack II Switch
matrix module that delivers high-
speed/performance interswitch links—
eliminating bottlenecks between
switches. Stacked switches communi-
cate through matrix ports, so you don’t
consume valuable Fast Ethernet or
Gigabit Ethernet ports. You can mix
and match multiple switches to create
one virtual switch of up to 110
switched ports that is manageable as a
single entity with a single IP address
(note: multiple IP addresses can be sup-
ported to provide resilient stack
management).
To make management even easier,
the SuperStack II 1100/3300 family
features Web-based monitoring and
control, so IT staff can troubleshoot or
configure a stack from any location.
Embedded Remote Monitoring
(RMON) support provides detailed
information on network traffic. The
switches also ship with 3Com
Transcend Network Supervisor, an easy
and automatic management solution
specifically designed for small- and
medium-sized businesses.
For added reliability, the switches
support resilient links and spanning
tree, as well as optional redundant
power supplies.
In addition to this easy mix-and-
match scalability, the SuperStack II
Switch 1100/3300 family supports a
broad range of expansion modules
(such as Layer 3 switching, Gigabit
Ethernet, or ATM support) to add con-
nectivity or functionality as needed.
What’s more, all four models share
the same software, reducing training
time and ensuring flawless interoper-
ability. Companies can even bolster
their e-business initiatives by adding
voice and video to their networks with
a rich traffic management feature set,
including:
• Policy enforcement with Fast IP,
IGMP snooping, IEEE 802.1D
(incorporating 802.1p prioritiza-
tion), and IEEE 802.1Q
standards-based VLANs
• Dual queues to help prioritize multi-
media traffic
• Multicast filtering using IGMP
snooping/GMRP for more efficient
bandwidth utilization when trans-
porting video traffic
• Elastic port buffering for on-the-fly
port buffer memory allocation,
enabling automatic performance
optimization based on network
traffic
• Flow control to maximize perfor-
mance and minimize packet loss
under heavy network loading
• Automatic detection of full-/half-
duplex operation on all ports to
maximize performance without
manual configuration
• Trunking support to aggregate links
into a single high-speed connection
to other switches or backbone net-
works
• Optional Layer 3 switching to
increase network performance by
off-loading legacy routers and con-
trolling broadcast/multimedia traffic
All models in the SuperStack II
Switch 1100/3300 family come with
the 3Com lifetime limited warranty,
which includes 5 years of free advance
hardware replacement (3Com will ship
a new switch out to you even before
you return the old one.). For extra
assurance, you’ll also receive 90 days of
free telephone technical support, as
well as free lifetime software upgrades.