Alloy Computer Products NS-24T01FS User Manual
NS-24T01FS
24-Port 10/100Mbps
Fast Ethernet
Smart Switch
User’s Guide
FCC Warning
This equipment has been tested and found to comply with the
regulations for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is
operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with this user’s guide, may
cause harmful interference to radio communications. Operation
of this equipment in a residential area is likely to cause harmful
interference, in which case the user will be required to correct the
interference at his/her own expense.
VCCI Warning
This is a product of VCCI Class A Compliance.
CE Mark Warning
This is a Class A product. In a domestic environment, this
product may cause radio interference, in which case the user may
be required to take adequate measures.
Australian C-Tick Compliant
N866
a
UL Warning
a) Elevated Operating Ambient Temperature- If installed in a
closed or multi-unit rack assembly, the operating ambient
temperature of the rack environment may be greater than room
ambient. Therefore, consideration should be given to installing
the equipment in an environment compatible with the
manufacturer's maximum rated ambient temperature (Tmra).
b) Reduced Air Flow- Installation of the equipment in a rack
should be such that the amount of air flow required for safe
operation of the equipment is not compromised.
c) Mechanical Loading- Mounting of the equipment in the rack
should be such that a hazardous condition is not achieved due to
uneven mechanical loading.
d) Circuit Overloading- Consideration should be given to the
connection of the equipment to the supply circuit and the effect
that overloading of circuits might have on over current protection
and supply wiring. Appropriate consideration of equipment
nameplate ratings should be used when addressing this concern.
e) Reliable Earthing- Reliable earthing of rack-mounted
equipment should be maintained. Particular attention should be
given to supply connections other than direct connections to the
branch circuit (e.g., use of power strips).
P/N:1907SMSW24B7280
Comme
Safety W
TABLE OF CONTENTS
ABOUT THIS GUIDE............................................................................ 1
URPOSE ................................................................................................ 1
P
T
ERMS/USAGE....................................................................................... 1
INTRODUCTION .................................................................................. 3
AST ETHERNET TECHNOLOGY ............................................................ 3
F
S
WITCHING TECHNOLOGY .................................................................... 4
VLAN
(VIRTUAL LOCAL AREA NETWORK)......................................... 5
F
EATURES.............................................................................................. 6
UNPACKING AND INSTALLATION ................................................ 7
U
NPACKING........................................................................................... 7
I
NSTALLATION....................................................................................... 8
R
ACK MOUNTING.................................................................................. 9
C
ONNECTING NETWORK CABLE ......................................................... 10
AC
POWER .......................................................................................... 10
IDENTIFYING EXTERNAL COMPONENTS ................................ 11
RONT PANEL...................................................................................... 11
F
R
EAR PANEL........................................................................................ 12
UNDERSTANDING LED INDICATORS ......................................... 13
OWER AND SYSTEM LEDS ................................................................ 13
P
P
ORTS 1~24 STATUS LEDS................................................................. 14
F
IBRE MODULE LEDS ......................................................................... 14
CONFIGURATION.............................................................................. 15
ONSOLE PORT (RS-232 DCE)........................................................... 15
C
C
ONFIGURING THE SWITCH................................................................. 18
L
OGIN .................................................................................................. 19
M
AIN MENU ........................................................................................ 20
C
ONFIGURING SETUP SETTING............................................................ 21
C
ONFIGURING SYSTEM SETTING......................................................... 26
C
ONFIGURING FILE SETTING............................................................... 27
S
TATISTICS .......................................................................................... 28
TECHNICAL SPECIFICATIONS ..................................................... 30
ABOUT T HIS G UIDE
Congratulations on your purchase of your Alloy 24-Port
10/100Mbps Fast Ethernet Smart Switch. This device integrates
100Mbps Fast Ethernet and 10Mbps Ethernet network
capabilities in a highly flexible package.
Purpose
This guide discusses how to install your 24-Port 10/100Mbps
Fast Ethernet Smart Switch.
Terms/Usage
In this guide, the term “Switch” (first letter upper case) refers to
your 24-Port 10/100Mbps Fast Ethernet Smart Switch, and
“switch” (first letter lower case) refers to other Ethernet
switches.
1
INTRODUCTION
This chapter describes the features of the 24-Port 10/100Mbps
Fast Ethernet Smart Switch and some background information
about Ethernet/Fast Ethernet switching technology.
Fast Ethernet Technology
The growing importance of LANs and the increasing complexity
of desktop computing applications are fueling the need for high
performance networks. A number of high-speed LAN
technologies have been proposed to provide greater bandwidth
and improve client/server response times. Among them,
100BASE-T (Fast Ethernet) provides a non-disruptive, smooth
evolution from the current 10BASE-T technology. The nondisruptive and smooth evolution nature, and the dominating
potential market base, virtually guarantee cost-effective and high
performance Fast Ethernet solutions.
100Mbps Fast Ethernet is a standard specified by the IEEE 802.3
LAN committee. It is an extension of the 10Mbps Ethernet
standard with the ability to transmit and receive data at 100Mbps,
while maintaining the CSMA/CD Ethernet protocol. Since the
100Mbps Fast Ethernet is compatible with all other 10Mbps
Ethernet environments, it provides a straightforward upgrade and
takes advantage of the existing investment in hardware, software,
and personnel training.
3
Switching Technology
Another approach to pushing beyond the limits of Ethernet
technology is the development of switching technology. A switch
bridges Ethernet packets at the MAC address level of the
Ethernet protocol transmitting among connected Ethernet or Fast
Ethernet LAN segments.
Switching is a cost-effective way of increasing the total network
capacity available to users on a local area network. A switch
increases capacity and decreases network loading by dividing a
local area network into different segments, which don’t compete
with each other for network transmission capacity.
The switch acts as a high-speed selective bridge between the
individual segments. The switch, without interfering with any
other segments, automatically forwards traffic that needs to go
from one segment to another. By doing this the total network
capacity is multiplied, while still maintaining the same network
cabling and adapter cards.
Switching LAN technology is a marked improvement over the
previous generation of network bridges, which were
characterized by higher latencies. Routers have also been used to
segment local area networks, but the cost of a router, the setup
and maintenance required make routers relatively impractical.
Today switches are an ideal solution to most kinds of local area
network congestion problems.
4
VLAN (Virtual Local Area Network)
A VLAN is a group of end-stations that are not constrained by
their physical location and can communicate as if in a common
broadcast domain, a LAN. The primary utility of using VLAN is
to reduce latency and need for routers, using faster switching
instead. Other VLAN utility include:
¾ Security
Security is increased with the reduction of opportunity in
eavesdropping on a broadcast network because data will be
switched to only those confidential users within the VLAN.
¾ Cost Reduction
VLANs can be used to create multiple broadcast domains, thus
eliminating the need of expensive routers.
Port-based (or port-group) VLAN is the common method of
implementing a VLAN, and is the one implimented in the Switch.
Each Switch port can belong to one or more of up to twenty four
VLANs.
5
Features
¾ 24×10/100Mbps Auto-negotiation Ethernet ports
¾ All ports support auto MDI/MDIX, so there is no need
to use cross-over cables or an up-link port
¾ Full/half duplex transfer mode for each port
¾ Wire speed reception and transmission
¾ Store-and-Forward switching scheme capability to
support rate adaptation and ensure data integrity
¾ Broadcast storm protection
¾ Up to 4K unicast addresses entities per device, self-
learning, and table aging
¾ 256KBytes on-chip packet buffer for each eight ports
¾ Supports IEEE 802.3x flow control for full-duplex
mode ports
¾ Supports Back-pressure flow control for half-duplex
mode ports
¾ Optional one port 100BASE-FX Fibre module in the
rear panel for length extension
¾ Supports Port-base VLAN and IEEE 802.1p QoS
¾ RS-232 DCE console port for setting up and manage
the Switch via connection to a console terminal or PC
using a terminal emulation program
6
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