LevelOne Switch Gigabit Chassis switch User Manual

GSW-2453 Gigabit Chassis switch  
User Guide  
 
Contents  
 
 
1. Introduction  
GSW-2453, 3-slot Gigabit Chassis switch, is a modular Switch that can be used to  
build high-performance switched workgroup networks. This switch is  
a
store-and-forward device that offers low latency for high-speed networking. The Switch  
is targeted at workgroup, department or backbone computing environment.  
GSW-2453 features a “store-and-forward “ switching scheme. This allows the switch to  
auto-learn and store source address in an 4K-entry MAC address table.  
(Medium Dependent Interface) Port is also called an "uplink port". The MDI port  
MDI  
does not cross transmit and receive lines, which is done by the regular ports (MDI-X  
ports) that connect to end stations. In general, MDI means connecting to another Hub  
or Switch while MDIX means connecting to a workstation or PC. Therefore, Auto  
MDI/MDIX means that you can connect to another Switch or workstation without  
changing non-crossover or crossover cabling.  
GSW-2453 has 3-module slot. User can accord their needs to purchase the modules.  
This can give elasticity on network application.  
Features  
Compatible with IEEE 802.3 10Base-T, IEEE802.3u 100Base-TX, IEEE802.3z  
gigabit fiber and IEEE802.3ab 1000Base-T  
Support 8 port gigabit 10/100/1000Tx module, 8 port Mini GBIC module, 4 port  
10/100/1000TX + 4 port Mini GBIC module  
IEEE802.3x flow control  
¾
¾
Pause frame for 10/100/1000Mbps full duplex  
Backpressure for 10/100 Mbps half duplex  
10Kbytes Jumbo packet support  
Store and forward architecture  
19 inch Rack mount design  
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Package Contents  
GSW-2453  
Unpack the contents of the  
below.  
and verify them against the checklist  
GSW-2453  
Power Cord  
Four Rubber Feet  
Rack-mounted kit  
User Guide  
GSW-2453  
Four Rubber Feet  
Power Cord  
Rack-mounted Kit  
User Guide  
Figure 1-2. Package Contents  
Compare the contents of your GSW-2453 package with the standard checklist above.  
If any item is missing or damaged, please contact your local dealer for service.  
Ethernet Switching Technology  
Ethernet Switching Technology dramatically boosted the total bandwidth of a network,  
eliminated congestion problems inherent with CSMA/CD (Carrier Sense multiple  
access with Collision Detection) protocol, and greatly reduced unnecessary  
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transmissions.  
This revolutionized networking. First, by allowing two-way, simultaneous transmissions  
over the same port (Full-duplex), which essentially doubled the bandwidth. Second, by  
reducing the collision domain to a single switch-port, which eliminated the need for  
carrier sensing. Third, by using the store-and-forward technology’s approach of  
inspecting each packet to intercept corrupt or redundant data, switching eliminated  
unnecessary transmission that slow the network. By employing address learning,  
which replaced the inefficient receiving port.  
Auto-negotiation regulates the speed and duplex of each port, based on the capability  
of both devices. Flow-control allows transmission from a 1000Mbps node to a  
100Mbps node without loss of data. Auto-negotiation and flow-control may require  
disablement for some networking operations involves legacy equipment. Disabling the  
auto-negotiation is accomplished by fixing the speed or duplex of a port.  
Ethernet Switching Technology supplied higher performance at costs lower than other  
solutions. Wider bandwidth, no congestion, and the reduction in traffic is why switching  
is replacing expensive routers and inefficient hubs as the ultimate networking solution.  
Switching brought a whole new way of thinking to networking.  
3
 
2. Hardware Description  
This Section mainly describes the hardware of the GSW-2453, and gives a physical  
and functional overview of this chassis switch.  
Physical Dimension  
The GSW-2453 physical dimension is  
.
440mm(W) x 224mm(D) x 44mm(H)  
Front Panel  
The Front Panel of the GSW-2453 consists of 3 module slots.  
Figure 2-1 The Front Panel of the GSW-2453  
The modules in the picture are optional, not including in the package.  
LED Indicators  
The LED Indicators gives real-time information of systematic operation status. The  
LED indicators are located in each module. The LED indicators will be different for  
different type of module. The following table provides descriptions of LED status and  
their meaning.  
4
 
 
System  
LED  
Status  
Green  
Off  
Description  
Power On  
Power  
Power is not connected  
Gigabit Copper Module  
LED  
Status  
Green  
Orange  
Off  
Description  
In 1000Mpbs speed  
1000/100  
In 100Mbps speed  
In 10Mbps or no device is connected.  
The port is connecting with the device.  
The port is receiving or transmitting data.  
No device attached.  
Green  
Blinks  
Off  
LK/ACT  
Gigabit Mini GBIC Module  
LED  
Status  
Green  
Blinks  
Off  
Description  
The port is connecting with the device.  
The port is receiving or transmitting data.  
No device attached.  
LK/ACT  
5
 
Rear Panel  
The 3-pronged power plug, 2 fans, power switching is located at the rear panel of the  
GSW-2453 as shown in Figure 2-2. The switch will work with AC power in the range of  
100-240V AC, 50-60Hz.  
Figure 2-2. The Rear Panel of the 3-slot Gigabit Cassis switch  
Desktop Installation  
Set the Switch on a sufficiently large flat space with a power outlet nearby. The surface  
where you put your Switch should be clean, smooth, level and sturdy. Make sure there  
is enough clearance around the Switch to allow attachment of cables, power cord and  
allow air circulation.  
Attaching Rubber Feet  
A. Make sure mounting surface on the bottom of the Switch is grease and dust free.  
B. Remove adhesive backing from your Rubber Feet.  
C. Apply the Rubber Feet to each corner on the bottom of the Switch. These footpads  
can prevent the Switch from shock/vibration.  
Rack-mounted Installation  
The switch come with a rack-mounted kit and can be mounted in an EIA standard size,  
19-inch Rack. The Switch can be placed in a wiring closet with other equipment.  
Perform the following steps to rack mount the switch:  
6
 
 
A. Position one bracket to align with the holes on one side of the switch and secure it  
with the smaller bracket screws. Then attach the remaining bracket to the other  
side of the Switch.  
B. After attached both mounting brackets, position the switch in the rack by lining up  
the holes in the brackets with the appropriate holes on the rack. Secure the Switch  
to the rack with a screwdriver and the rack-mounting screws.  
For proper ventilation, allow about at least 4 inches (10 cm) of clearance on  
Note:  
the front and 3.4 inches (8 cm) on the back of the Switch. This is especially  
important for enclosed rack installation.  
Power On  
Connect the power cord to the power socket on the rear panel of the Switch. The other  
side of power cord connects to the power outlet. The internal power supply of the  
Switch works with voltage range of AC power in the 100-240VAC, frequency 50~60Hz.  
Check the power indicator on the front panel to see if power is properly supplied.  
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3. Network Application  
GSW-2453 is designed as a segment switch. That is, with its large address table (4000  
MAC address) and high performance, it is ideal for interconnecting networking  
segments.  
PC, workstations, and servers can communicate each other by directly connecting with  
3-slot Gigabit Chassis s switch. The switch automatically learns nodes address, which  
are subsequently used to filter and forward all traffic based on the destination address.  
.
By using Gigabit or Gigabit Fiber the switch can connect with another switch or hub to  
interconnect other small-switched workgroups to form a larger switched network.  
Meanwhile, you can also use Ethernet or Gigabit fiber ports to connect switches.  
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4. Troubleshooting  
This section is intended to help you solve the most common problems on the  
GSW-2453.  
Incorrect connections  
The switch port can auto detect straight or crossover cable when you link switch with  
other Ethernet device. For the UTP connector should use correct UTP or STP cable,  
10/100Mbps port use 2 pairs twisted cable and Gigabit 1000T port use 4 pairs twisted  
cable. If the UTP connector is not correct pin on right position then the link will fail.  
For fiber connection, please notice that fiber cable mode and fiber module should be  
match.  
Faulty or loose cables  
Look for loose or obviously faulty connections. If they appear to be OK, make sure the  
connections are snug. IF that does not correct the problem, try a different cable.  
Non-standard cables  
Non-standard and miss-wired cables may cause numerous network collisions and  
other network problem, and can seriously impair network performance. A category  
5-cable tester is a recommended tool for every 100Base-T network installation.  
Improper Network Topologies  
It is important to make sure that you have a valid network topology. Common topology  
faults include excessive cable length and too many repeaters (hubs) between end  
nodes. In addition, you should make sure that your network topology contains no data  
path loops. Between any two ends nodes, there should be only one active cabling path  
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at any time. Data path loops will cause broadcast storms that will severely impact your  
network performance.  
Diagnosing LED Indicators  
The Switch can be easily monitored through panel indicators to assist in identifying  
problems, which describes common problems you may encounter and where you can  
find possible solutions.  
IF the power indicator does turn on when the power cord is plugged in, you may have a  
problem with power outlet, or power cord. However, if the Switch powers off after  
running for a while check for loose power connections, power losses or surges at  
power outlet. IF you still cannot resolve the problem, contact your local dealer for  
assistance.  
Cabling  
UTP ports use unshielded twisted-pair (UTP) or shield twisted-pair ( STP ) cable for  
Ω
Ω
Category 3, 4 or 5 cable for 10Mbps connections or 100  
RJ-45 connections: 100  
Category 5 cable for 100Mbps connections. Also be sure that the length of any  
twisted-pair connection does not exceed 100 meters (328 feet). Gigabit port should  
use Cat-5 or cat-5e cable for 1000Mbps connections. The length does not exceed 100  
meters.  
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5. Technical Specification  
This section provides the specifications of the GSW-2453 and the following table lists  
these specifications.  
IEEE802.3 10Base-T  
IEEE802.3u 100Base-TX  
Standard  
IEEE802.3z Gigabit fiber  
IEEE802.3ab 1000Base-T  
Switch architecture  
LED Indicators  
Store and forward switch architecture  
System: Power  
Per RJ-45 port: 1000/100Mbps, Link/Activity, Full  
duplex/ collision  
Gigabit SX/LX/MINI GBIC slot: Link/Activity  
Gigabit copper: RJ-45 with Auto MID/MDI-X  
Gigabit Fiber: SC  
Connector  
MINI GBIC: LC (3.3 V type)  
14880 Packets per Second for 10Mbps  
148800 Packets per second for 100Mbps  
1488000 Packets per second for 1000Mbps  
Transfer Rate  
10Base-T: 2 pairs UTP/STP CAT.3, 4, 5 cable  
EIA/TIA 568 100Ohm(100M)  
100Base-TX: 2 pairs UTP/STP CAT. 5 cable EIA/TIA  
568 100Ohm(100M)  
Network Cable  
Gigabit Copper: 4 pairs UTP/STP CAT. 5 or CAT. 5e  
cable EIA/TIA 568 100Ohm(100M)  
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8-port Gigabit copper module(MDU-2453T)  
8 MINI GBIC module (MDU-2453M)  
Expansion module  
4 Gigabit copper+4 MiniGBIC module (MDU-2453TM)  
MAC address  
Packet Buffer  
4K  
2 Mbits  
Dimensions  
440mm(W) x 224mm(D) x 44mm(H)  
100~240VAC, 50 /60Hz, 0.8A (maximum)  
2 x DC cooling fan  
Power Supply  
Ventilation  
-5 ~55 , 10%~95%RH  
Operating temperature  
-40 ~70 , 95% RH  
Storage temperature  
EMI  
FCC Class A, CE  
Safety  
UL, cUL, CE/EN60950  
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