3com Switches 사용자 설명서

Features

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.

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 
SuperStack II Switches

Disconnect Unauthoriz

ed

Device (Security)

Tr

anscend network

management suppor

t

Stackable with matrix

module & cable

W

eb-based

management 

PA

CE technology

RMON suppor

t

Flo

w contr

ol

(IE

EE 802.3x)

Ro

ving Analysis P

or

t

IE

EE

 802.1D 

(incorpor

ating 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 Unauthorized
Device (DUD)
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.

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

Flo

w Contr

ol-I

Ships with 

Tr

anscend

Network Super

visor

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

● 

●

●

●

●

●

●

●

● 

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

● 

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

■ Optional—Achieved with SuperStack II Switch Layer 3 plug-in module