S5720-12TP-LI-AC

Version Mapping

Table 1 lists the mapping between the S5720-12TP-LI-AC chassis and software versions.

**Table 1** Version mapping
Series	Model	Software Version
S5720-LI	S5720-12TP-LI-AC	V200R010C00 and later versions

Appearance and Structure

Figure 1 S5720-12TP-LI-AC appearance

1	Eight 10/100/1000BASE-T ports	2	Two combo ports (10/100/1000BASE-T + 100/1000BASE-X) Modules applicable to combo optical ports: FE optical module GE optical module (the maximum transmission distance cannot exceed 40 km)
3	Two 1000BASE-X ports Applicable modules: GE optical module (the maximum transmission distance cannot exceed 40 km) GE copper module (works at 10 Mbit/s, 100 Mbit/s, or 1000 Mbit/s) Stack optical module (only applicable to stack ports) 1 m, 3 m, 5 m, 10 m SFP+ high-speed copper cables (only applicable to stack ports) 3 m and 10 m AOC cables (only applicable to stack ports) 0.5 m and 1.5 m SFP+ dedicated stack copper cables (used for zero-configuration stacking, supported in V200R011C10 and later versions) H87MMA5671A2 GPON optical module (applicable in V200R012C00 and later versions) NOTE: If a port uses a GPON optical module, other 1000BASE-X optical ports cannot be used.	4	One console port
5	One PNP button NOTICE: Applicable in V200R012C00 and later versions: To restore the factory settings and reset the switch, hold down the button for at least 6 seconds. To reset the switch, press the button. Resetting the switch will cause service interruption. Exercise caution when you press the PNP button.	6	AC socket NOTE: It is used with an AC power cable.
7	Jack for AC power cable locking strap NOTE: The AC power cable locking strap is not delivered with the switch.	-	-

Port Description

10/100/1000BASE-T port

A 10/100/1000BASE-T Ethernet electrical port sends and receives service data at 10/100/1000 Mbit/s, and must use an Ethernet cable. Table 2 describes the attributes of a 10/100/1000BASE-T Ethernet electrical port.

**Table 2** Attributes of a 10/100/1000BASE-T Ethernet electrical port
Attribute	Description
Connector type	RJ45
Standards compliance	IEEE802.3, IEEE802.3u, IEEE802.3ab
Working mode	10/100/1000 Mbit/s auto-sensing
Maximum transmission distance	100 m

Combo port

A combo port refers to a pair of ports consisting of an optical Ethernet port and an electrical Ethernet port on the panel. Each combo port matches only one internal forwarding port. A combo port can be configured as an electrical port or an optical port, but only one port can be active at a time. When one port is active, the other port is shut down.

By default, a combo port works in auto mode, in which the port type is determined as follows:

If the optical port has no optical module installed and the electrical port has no Ethernet cable connected, the port type depends on which port is connected first. If the electrical port is connected by an Ethernet cable first, the electrical port is used for data switching. If the optical port has an optical module installed first, the optical port is used for data switching.
If the electrical port has an Ethernet cable connected and is in Up state, the electrical port is still used for data switching when the optical port has an optical module installed.
If the optical port, no matter in Up or Down state, has an optical module installed, the optical port is still used for data switching when the electrical port has an Ethernet cable connected.
If the optical port has an optical module installed and the electrical port has an Ethernet cable connected, the optical port is used for data switching after the switch restarts.

You can configure a combo port as an electrical or optical port using the combo-port command.

1000BASE-X port

When a 1000BASE-X port uses a GE optical module, it can only transmit and receive data at 1000 Mbit/s and does not support the 100 Mbit/s transmission speed. When a 1000BASE-X port uses a GE copper module, it can transmit and receive data at 10 Mbit/s, 100 Mbit/s, or 1000 Mbit/s. Table 3 describes the attributes of a 1000BASE-X Ethernet optical port.

**Table 3** Attributes of a 1000BASE-X Ethernet optical port
Attribute	Description
Connector type	LC/PC
Optical port attributes	Depend on the module used
Standards compliance	IEEE802.3z

Console port

The console port is connected to a console for on-site configuration. The port must use a console cable. The console port is used when a switch is powered on for the first time. For details about the attributes of a console port, see Table 4.

**Table 4** Attributes of a console port
Attribute	Description
Connector type	RJ45
Standards compliance	RS-232
Working mode	Duplex Universal Asynchronous Receiver/Transmitter (UART)
Baud rate	9600 bit/s, 19200 bit/s, 38400 bit/s, 57600 bit/s, or 115200 bit/s Default value: 9600 bit/s

Indicator Description

Hold down the mode switch button for 6s and release it to start the web initial login mode. Either of the following situations will occur:

If the switch has no configuration file, the system attempts to enter the web initial login mode. In this mode, the status of mode indicators is as follows:
- If the system enters the web initial login mode successfully, all mode indicators turn green and stay on for a maximum of 10 minutes.
- If the system fails to enter the initial login mode, all mode indicators fast blink for 10 seconds and then restore the default status.
If the switch has a configuration file, the system cannot enter the web initial login mode. In this case, all mode indicators fast blink for 10s, and then return to the default states.

Figure 2 Indicators on the S5720-12TP-LI-AC

**Table 5** Description of indicators on the switch
No.	Indicator	Name	Color	Status	Description
1	PWR	Power module indicator	-	Off	The switch is powered off.
1	PWR	Power module indicator	Green	Steady on	The system power supply is normal.
2	SYS	System status indicator	-	Off	The system is not running.
			Green	Fast blinking	The system is starting.
			Green	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.
3	STAT	Status indicator	-	Off	The status mode is not selected.
3	STAT	Status indicator	Green	Steady on	The status mode (default mode) is selected. If the status mode is selected, the service port indicator shows the port link or activity state.
4	SPED	Speed indicator	-	Off	The speed mode is not selected.
4	SPED	Speed indicator	Green	Steady on	The service port indicators show the port speeds. After 45 seconds, the service port indicators automatically restore to the status mode.
5	STCK	Stack indicator	-	Off	If you are not changing the indicator mode (default): The switch is in stack standby or slave state or the stacking function is not enabled on the switch. If you are changing the indicator mode: The stack mode is not selected.
			Green	Steady on	The switch is a standby or slave switch in a stack, and the service port indicators show the stack ID of the switch.
			Green	Blinking	If you are not changing the indicator mode (default): The switch is a stack master switch or a standalone switch with the stacking function enabled. If you are changing the indicator mode: The switch is the master switch in a stack or a standalone switch, and the service port indicators show the stack ID of the master switch. After 45 seconds, the service port indicators automatically restore to the status mode.
6	MODE	Mode switch button	-	-	When you press this button once, the service port indicators change to the speed mode and show the speed of each service port When you press this button a second time, the service port indicators change to the stack mode and show the stack ID of the local switch. When you press this button a third time, the service port indicators restore to the default mode, and the STAT indicator turns green. If you do not press the MODE button within 45 seconds, the service port indicators restore to the default mode. In this case, the STAT indicator is steady green, the SPED indicator is off, and the STCK indicator is off or blinking green.
7	-	Service port indicator	Meanings of service port indicators vary in different modes. For details, see Table 6.

**Table 6** Description of service port indicators in different modes (one indicator for each port)
Display Mode	Color	Description
Status	Green	Off: The port is not connected or has been shut down. Steady on: The port is connected. Blinking: The port is sending or receiving data.
Speed	Green	Off: The port is not connected or has been shut down. Steady on: 10M/100M/1000M port: The port is operating at 10/100 Mbit/s. Blinking: 10M/100M/1000M port: The port is operating at 1000 Mbit/s.
Stack	Green	Off: Port indicators do not show the stack ID of the switch. If the indicator is steady on, the switch is not a master switch: If the indicator of a port is steady on, the number of this port is the stack ID of the switch. If the indicators of ports 1 to 9 are steady on, the stack ID of the switch is 0. If the indicator is blinking, the switch is a master switch: If the indicator of a port is blinking, the number of this port is the stack ID of the switch. If the indicators of ports 1 to 9 are blinking, the stack ID of the switch is 0.

Power Supply Configuration

The S5720-12TP-LI-AC has a built-in power module and does not support pluggable power modules.

Figure 3 shows the power supply mode of a built-in AC power module. The built-in AC power module (PWR) receives power from an external power source and provides a 12 V output to the chassis.

Figure 3 Power supply mode of a built-in AC power module

L: live wire

N: neutral wire

PGND: protection ground wire

GND: 12 V reference ground

Heat Dissipation

The S5720-12TP-LI-AC has no fans and uses natural heat dissipation.

Technical Specifications

Table 7 lists technical specifications of the S5720-12TP-LI-AC.

**Table 7** Technical specifications
Item	Description
Memory (RAM)	512 MB
Flash	512 MB in total. To view the available flash memory size, run the display version command.
Mean time between failures (MTBF)	23.8 years
Mean time to repair (MTTR)	2 hours
Availability	> 0.99999
Service port surge protection	Common mode: ±7 kV
Power supply surge protection	±6 kV in differential mode, ±6 kV in common mode
Dimensions (H x W x D)	43.6 mm x 250.0 mm x 180.0 mm (1.72 in. x 9.8 in. x 7.1 in.)
Weight (with packaging)	1.8 kg (3.97 lb)
Stack ports	Eight 10/100/1000BASE-T ports and two 1000BASE-X ports
RTC	Not supported
RPS	Not supported
PoE	Not supported
Rated voltage range	100 V AC to 240 V AC, 50/60 Hz
Maximum voltage range	90 V AC to 264 V AC, 47 Hz to 63 Hz
Maximum power consumption (100% throughput)	12.85 W
Typical power consumption (30% of traffic load) Tested according to ATIS standard EEE enabled No PoE power consumption	10.39 W
Operating temperature	0°C to 45°C (32°F to 113°F) at an altitude of 0-1800 m (0-5906 ft.) NOTE: When the altitude is 1800-5000 m (5906-16404 ft.), the highest operating temperature reduces by 1°C (1.8°F) every time the altitude increases by 220 m (722 ft.). The operating temperature of the switch is 0°C to 40°C (32°F to 104°F) when it uses GE SFP optical modules with 40 km transmission distance.
Storage temperature	-40°C to +70°C (-40°F to +158°F)
Noise under normal temperature (27°C, sound power)	Noise-free (no fans)
Relative humidity	5% to 95%, noncondensing
Operating altitude	0-5000 m (0-16404 ft.)
Certification	EMC certification Safety certification Manufacturing certification
Part number	98010567