S1720-20GFR-4TP

S1720-20GFR-4TP(16 Gigabit Ethernet ports ,2 Gig SFP and 2 dual-purpose 10/100/1000 or SFP,AC 110/220V)

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Product description
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Warranty description
Evaluation
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S1720-20GFR-4TP Overview

Huawei S1720-20GFR-4TP is an Web/SNMP-based switch. It’s one of the S1700 Series Enterprise Switches which are easy to install and maintain, and are ideal for small- and medium-size enterprises, Internet cafes, hotels, and schools.

Table 1 shows the Quick Specs.

Product Code	S1720-20GFR-4TP
Type	Web/SNMP-based Switch
Downlink Ports	16 Ethernet 10/100/1000 ports
Uplink Ports	2 Gig SFP and 2 dual-purpose 10/100/1000 or SFP
MAC Address	16 K MAC
Forwarding Performance	30 Mpps
Switching Capacity	128 Gbit/s
Input Voltage	100 V to 240 V AC, 50/60 Hz
Heat Dissipation	Fan-free natural heat dissipation
Dimensions (W x D x H)	44.2cm × 22cm × 4.36cm
Weight	3.46 Kg

Table 2 shows the numbers’ descriptions.

Indicator/Button	Color	Description
Service port indicator	Meanings of service port indicators vary in different modes. See the Table 3.
PWR : power indicator	Off	The switch is powered off.
PWR : power indicator	Green	Steady on: The power module is supplying power normally.
SYS: system status indicator	Off	The system is not running.
	Green	- Fast blinking: The system is starting. - Slow blinking: The system is running normally.
	Red	Steady on: The system does not work normally after registration, or a temperature alarm has been generated.
SPED: speed indicator	Off	The speed mode is not selected.
SPED: speed indicator	Green	Steady on: The speed mode is selected. In this mode, service port indicators show port speeds. After 45 seconds, the service port indicators automatically restore to the status mode.
MODE: mode switch button	- Press this button once, the service port indicators change to the speed mode and show the speed of each service port. - Press this button again, the service port indicators restore to the default mode and show the connection status of each service port. - If you do not press this button within 45 seconds, the service port indicators restore to the default mode. In this case, the SPED indicator is off.

Table 3 shows the Service port indicators’ descriptions.

Service port indicators	Color	Description
Default mode	Off	No connection is set up on the port or the port has been shut down.
	Green	Steady on: The port is connected.
	Green	Blinking: The port is transmitting or receiving data.
Speed mode	Green	Off: The port is not connected or has been shut down.
		Steady on: The port is operating at 10/100 Mbit/s.
		Blinking: The port is operating at 1000 Mbit/s.

The Optical Transceiver

Table 4 shows the recommended optical transceivers for 1720-20GFR-4TP.

Models	Description
SFP-FE-SX-MM1310	Optical Transceiver,SFP,100M/155M,Multi-mode Module(1310nm,2km,LC)
eSFP-FE-LX-SM1310	Optical Transceiver,eSFP,100M/155M,Single-mode Module(1310nm,15km,LC)
S-SFP-FE-LH40-SM1310	Optical Transceiver, eSFP, FE, Single-mode Module(1310nm,40km,LC)
SFP-1000BaseT	Electrical Transceiver, SFP, GE, Electrical Interface Module(100m,RJ45)
eSFP-GE-SX-MM850	Optical Transceiver, eSFP, GE, Multi-mode Module(850nm,0.55km,LC)
SFP-GE-LX-SM1310	Optical Transceiver, eSFP, GE, Single-mode Module(1310nm,10km,LC)
S-SFP-GE-LH40-SM1310	Optical Transceiver, eSFP, GE, Single-mode Module(1310nm,40km,LC)
S-SFP-GE-LH40-SM1550	Optical Transceiver, eSFP, GE, Single-mode Module(1550nm,40km,LC)

Compare to Similar Item

Table 5 shows the comparison between S1720-20GFR-4TP and S1720-28GFR-4TP.

Model	S1720-20GFR-4TP	S1720-28GFR-4TP
Downlink Ports	16 Ethernet 10/100/1,000 ports	24 Ethernet 10/100/1,000 ports
Uplink Ports	2 Gig SFP and 2 dual-purpose 10/100/1,000 or SFP	2 Gig SFP and 2 dual-purpose 10/100/1,000 or SFP
Forwarding Performance	30 Mpps	42 Mpps
Switching Capacity	128 Gbit/s	128 Gbit/s

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