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LevelOne FSW-1621 User Manual


Made by: LevelOne
Type: User Manual
Category: Switch
Pages: 11
Size: 0.41 MB


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16/24-port 10/100BASE-TX   

Fast Ethernet Switch 



User Manual





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1. Introduction 


Congratulations on your purchase of FSW-1621/2421. 

The FSW-1621/2421, 16/24-port 10/100Base-TX Switch, is a multi-port 

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 at SME (small, medium 

enterprise) business. 


The 16/24-port 10/100Base-TX Switch features a “store-and-forward 

“switching scheme. This allows the switch to auto-learn and store source 

address on 8K/4K-entry MAC address table. 






Conforms to IEEE 802.3, 802.3u and 802.3x 



16/24 10/100 Base-TX RJ-45 Ethernet ports 



Auto-MDIX on all ports 



IEEE 802.3x flow control support 


  Flow control on full-duplex 


  Back pressure on half-duplex 



N-Way Auto-Negotiation supported 



Store-and-Forward switching architecture and no-blocking full wire 




Back plane Bandwidth 4.8 Gbps for FSW-2421 



Back plane Bandwidth 3.2 Gbps for FSW-1621 



8K/4K MAC address table for FSW-1621/2421 





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Package Contents   


Unpack the contents of the 16/24-port 10/100Base-TX Switch and verify 

them against the checklist below. 




FSW-1621/2421 X 1 






19” Rack Mount kit 






Four Rubber Feet 





16/24-port 10/100Base-TX Switch       User Guide       19” Rack-Mount Kits 



                   Power Cord                   Rubber Feet 

Figure 1-2. Package Contents 


Compare the contents of your FSW-1621/2421 10/100Base-TX Switch 

package with the standard checklist above. If any item is missing or 

damaged, please contact your local dealer for service. 



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Hardware Description 



This Section mainly describes the hardware of the 16/24-port 

10/100Base-TX Switch, and gives a physical and functional overview of 

this Switch. 


The physical dimensions of the


FSW-1621/2421 is: 


250mmx 133 mm x 37mm (L x W x H)




Front Panel   


FSW-1621/2421 consists of 16/24 x 10/100Base-TX RJ-45 ports. The 

LED Indicators are also located on the front panel of the Switch. 



Figure 2-1. The Front view of FSW-1621/2421   


RJ-45 ports (Auto MDI/MDIX): 

16/24x 10/100Mbps auto-sensing port for 

10Base-T or 100Base-TX devices connection.


[In general, 


 means connecting to another Hub or Switch while 



means connecting to a workstation or PC. Therefore, 



means that you can connect to another Switch or workstation without 

changing non-crossover or crossover cabling.]



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LED Indicators 


The LED Indicators gives real-time information of systematic operation 

status. The following table provides descriptions of LEDs status and their 



Figure 2-2. LED Indicators 









Power On






Power is not connected




The port is connecting with the device




The port is receiving or transmitting data






No device attached


Table 2-1. The Descriptions of LED Indicators 


Rear Panel   


The 3-pronged power plug is located at the rear panel of the 16/24-port 

10/100Base-TX Switch as show in the Figure 2-3. The Switch will work 

with AC in the range 100-240V AC, 50-60Hz. 


Figure 2-3. The Rear Panel of FSW-1621/2421 



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Desktop Installation   

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 



FSW-1621/2421 10/100Base-TX Switch comes with a long 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: 

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 FSW-1621/2421 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. 


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 

external power supply in the Switch works with AC in the voltage range 

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 



This section provides you a few samples of network topology in which the 

Switch is used. In general, FSW-1621/2421 is designed as a segment 

switch. That is, with its large address table and high performance, it is 

ideal for interconnecting networking segments. 

You can use the FSW-1621/2421 to connect PCs, workstations, and 

servers to each other by connecting these devices directly to the Switch. 

The switch automatically learns nodes address, which are subsequently 

used to filter and forward all traffic based on the destination address. By 

using Uplink port, the Switch can connect with another switch or hub to 

interconnect each of your small-switched workgroups to form a larger 

switched network. 


Small Workgroup   


The 16/24-port 10/100Base-TX Switch can be used as a standalone 

switch to which personal computers, server, printer server, are directly 

connect to form small workgroup.   



Figure 3-1. Small Workgroup Application 


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Segment Bridge   

For enterprise networks where large data broadcasts are constantly 

processed, this switch is an ideal solution for department users to connect 

to the corporate backbone. 


In the illustration below, two Ethernet switches with PCs, print server, and 

local server attached, are both connect to the FSW-1621/2421. All those 

devices in this network can communicate with each other through 

FSW-1621/2421 Switch. Connecting servers to the Switch allow other 

users to access the server’s data. 



Figure 3-2 Department Bridge 




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4.Technical Specification 


This section provides the specifications of 


10/100Base-TX Switch


IEEE 802.3 10BASE-T Ethernet, 

IEEE 802.3u 100BASE-TX Fast Ethernet 

IEEE802.3x Flow Control and Back-pressure






Store and Forward switching architecture 

Transfer Rate 

14,880 pps Ethernet port 

148,800 pps Fast Ethernet port


MAC address 

4K/8K Mac address table for FSW-1621/2421


Memory Buffer 

4Mbits/1.25Mbits of FSW-1621/2421


Network Cable 

10BASE-T: 2-pair UTP/STP Cat. 3, 4, 5 cable 

EIA/TIA-568 100-ohm (100m) 

100BASE-TX: 2-pair UTP/STP Cat. 5 cable   

EIA/TIA-568 100-ohm (100m)


LED Indicators 

Per port: Link/Activity 

Per unit: Power



3.2/4.8Gbps for FSW-1621/2421



250mmx 133 mm x 37mm (L x W x H)


Operational Temp. 


 to 45


 to 113





10% to 90% (Non-condensing)


Power Supply 

100-240 VAC, 50~60Hz




10Watts for FSW-1621(maximum) 

19 Watts for FSW-2421(maximum)



FCC Class A, CE



CE/EN60950, UL, cUL