S6720-50L-HI-48S

Version Mapping

Table 1 lists the mapping between the S6720-50L-HI-48S chassis and software versions.

**Table 1** Version mapping
Series	Model	Software Version
S6720-HI	S6720-50L-HI-48S	V200R012C00 and later versions

Appearance and Structure

Figure 1 S6720-50L-HI-48S appearance

1	Forty-eight 10GE SFP+ ports Applicable modules and cables: GE optical module GE-CWDM optical module GE-DWDM optical module GE copper module (100M/1000M auto-sensing) 10GE SFP+ optical module (OSXD22N00 not supported) 10GE-CWDM optical module 10GE-DWDM optical module 1 m, 3 m, 5 m, and 10 m SFP+ high-speed copper cables 3 m and 10 m SFP+ AOC cables 0.5 m and 1.5 m SFP+ dedicated stack copper cables (the last 16 ports are supported, used for zero-configuration stacking)	2	Two 40GE/100GE QSFP28 ports Applicable modules and cables: QSFP+ optical module QSFP28 optical module 1 m, 3 m, and 5 m QSFP+ to QSFP+ high-speed copper cables 10 m QSFP+ to QSFP+ AOC cable 1 m, 3 m, and 5 m QSFP28 to QSFP28 high-speed copper cables 10 m QSFP28 to QSFP28 AOC cable NOTE: A QSFP28 optical port cannot be split into four 10GE ports. The default rate is 40 Gbit/s, and you can run the set device port-config-mode 100g-port enable command to change the rate to 100 Gbit/s. When you run the command on either of the ports, both ports are configured to work at the rate of 100 Gbit/s simultaneously. After the rate is changed from 40 Gbit/s to 100 Gbit/s, ports 10GE0/0/45 to 10GE0/0/48 become unavailable.
3	Four 40GE QSFP+ ports Applicable modules and cables: QSFP+ optical module 1 m, 3 m, and 5 m QSFP+ to QSFP+ high-speed copper cables 10 m QSFP+ to QSFP+ AOC cable NOTE: A 40GE QSFP+ optical port cannot be split into four 10GE ports.	4	Power module slot 1 NOTE: Applicable power modules: 350 W DC power module 600 W AC power module
5	Fan slot 1 NOTE: Applicable fan module: FAN-40HA-B Fan Module	6	One console port
7	One ETH management port	8	ESN label NOTE: You can draw it out to view the ESN and MAC address of the switch.
9	One USB port	10	Fan slot 2 NOTE: Applicable fan module: FAN-40HA-B Fan Module
11	Power module slot 2 NOTE: Applicable power modules: 350 W DC power module 600 W AC power module	12	Ground screw NOTE: It is used with a ground cable.

Port Description

10GE SFP+ port

A 10GE SFP+ Ethernet optical port supports auto-sensing to 1000 Mbit/s. It sends and receives service data at 1000 Mbit/s or 10 Gbit/s. Table 2 describes the attributes of a 10GE SFP+ Ethernet optical port.

**Table 2** Attributes of a 10GE SFP+ port
Attribute	Description
Connector type	LC/PC
Optical port attributes	Depend on the optical module used
Standards compliance	IEEE802.3ae
Working mode	GE/10GE auto-sensing

40GE/100GE QSFP28 port

A 40GE/100GE QSFP28 optical port sends and receives service traffic at 40 or 100 Gbit/s. Table 3 describes the attributes of a QSFP28 optical port.

**Table 3** Attributes of a QSFP28 optical port
Attribute	Description
Connector type	MPO/LC
Optical port attributes	Depend on the optical module used
Standards compliance	IEEE802.3ba

40GE QSFP+ port

A 40GE QSFP+ optical port sends and receives service traffic at 40 Gbit/s. Table 4 describes the attributes of a 40GE QSFP+ optical port.

**Table 4** Attributes of a 40GE QSFP+ optical port
Attribute	Description
Connector type	MPO/LC
Optical port attributes	Depend on the optical module used
Standards compliance	IEEE802.3ba

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 5.

**Table 5** 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

ETH management port

You can connect a switch to a configuration terminal or network management workstation through the ETH management port to configure the switch locally or remotely. The port must use an Ethernet cable. You can choose to download the software package through the ETH management port in the BootLoad menu. File transfer through the ETH management port is faster than transfer through the console port. Table 6 describes the attributes of an ETH management port.

**Table 6** Attributes of an ETH management port
Attribute	Description
Connector type	RJ45
Standards compliance	IEEE802.3
Working mode	10/100 Mbit/s auto-sensing
Maximum transmission distance	100 m

In V200R012C00 and later versions, you can log in to the switch that contains the ETH management port for the first time through the ETH port. For details, see "First Login to a Switch" in the Configuration Guide - Basic Configuration. If you have logged in to the device for the first time by pressing and holding the MODE button for 6 seconds or longer and saved the configuration, the default configuration on the ETH port will be cleared. In this case, you cannot log in to the switch for the first time through the ETH port. You are advised to log in to the switch for the first time through the ETH port.

USB port

The USB port can have a USB flash drive connected to upgrade the switch, or transfer configuration files or other files. The USB port can only connect to a USB flash drive that complies with USB 2.0.

USB flash drives from different vendors differ in model compatibility and drivers. If a USB flash drive cannot be used, try to replace it with another one from a mainstream vendor. Switches support a maximum of 128 GB USB flash drives.

Indicator Description

Figure 2 Indicators on the S6720-50L-HI-48S

**Table 7** Description of indicators on the switch
No.	Indicator	Name	Color	Status	Description
1	SYS	System status indicator	-	Off	The system is not running.
			Green	Fast blinking	The system is starting.
			Green	Steady on	In the system startup preparation phase, the SYS indicator is steady green for no more than 15 seconds.
			Green	Slow blinking	The system is running normally.
			Red	Steady on	The system does not work normally after registration, or a fan alarm or temperature alarm has been generated.
2	MST	stack indicator	-	Off	The switch is not a stack master.
2	MST	stack indicator	Green	Steady on	The switch is a stack master or standalone switch.
3	ID	ID indicator	-	Off	The ID indicator is not used (default state).
3	ID	ID indicator	Blue	Steady on	The indicator identifies the switch to maintain. The ID indicator can be turned on or off remotely to help field engineers find the switch to maintain.
4	-	Service port indicator (10GE optical port)	-	Off	The port is not connected or has been shut down.
			Green	Steady on	The port is connected.
			-	Off	The port is not sending or receiving data.
			Yellow	Blinking	The port is sending or receiving data.
5	-	Service port indicator (40GE or 40GE/100GE optical port)	-	Off	The port is not connected or has been shut down.
			Green	Steady on	The port is connected.
			Green	Blinking	The port is sending or receiving data.
6	ACT	USB-based deployment indicator	-	Off	No USB flash drive is connected to the switch. The USB port is damaged. The indicator is damaged. The USB flash drive does not have any configuration file and cannot be used for deployment. The switch has been upgraded using the USB flash drive and is restarting.
			Green	Steady on	A USB-based deployment has been completed.
			Green	Blinking	The system is reading data from the USB flash drive.
			Yellow	Steady on	The switch has copied all the required files and completed the file check. The USB flash drive can be removed from the switch.
			Red	Blinking	An error has occurred when the system is executing the configuration file or reading data from the USB flash drive.
7	L/A	ETH port indicator	-	Off	The ETH port is not connected.
			Green	Steady on	The ETH port is connected.
			Green	Blinking	The ETH port is sending or receiving data.

Power Supply Configuration

The S6720-50L-HI-48S uses pluggable power modules. It can be configured with a single power module or double power modules for 1+1 power redundancy. Pluggable AC and DC power modules can be used together in the same switch.

Figure 3 shows the power supply connections of dual DC power modules. After DC power is transmitted to the PWR module, the PWR module provides 12 V output voltage, and the motherboard provides power for the entire device.

Figure 3 Power supply connections of dual DC power modules

NEG: negative wire

RTN: positive wire

GND: 12 V reference ground

Figure 4 shows the power supply connections of dual AC power modules. After AC power is transmitted to the PWR module, the PWR module provides 12 V output voltage, and the motherboard provides power for the entire device.

Figure 4 Power supply connections of dual AC power modules

L: Live wire

N: Neutral wire

PGND: Protection ground wire

GND: 12 V reference ground

Heat Dissipation

The S6720-50L-HI-48S uses pluggable fan modules for forced air cooling. The airflow direction is front-to-rear.

This figure only shows the airflow direction and does not depict the actual device.

Technical Specifications

Table 8 lists technical specifications of the S6720-50L-HI-48S.

**Table 8** Technical specifications
Item	Description
Memory (RAM)	2 GB
Flash	1 GB in total. To view the available flash memory size, run the display version command.
Mean time between failures (MTBF)	54.65 years
Mean time to repair (MTTR)	2 hours
Availability	> 0.99999
Service port surge protection	NA
Power supply surge protection	Using AC power modules: ±6 kV in differential mode, ±6 kV in common mode Using DC power modules: ±1 kV in differential mode, ±2 kV in common mode
Dimensions (H x W x D)	43.6 mm x 442.0 mm x 420.0 mm (1.72 in. x 17.4 in. x 16.5 in.)
Weight (with packaging)	10.2 kg (22.49 lb)
Stack ports	The last 36 10GE SFP+ ports (a maximum of 16 physical ports) Any 40GE QSFP+ ports (a maximum of 6 physical ports) Any 100GE QSFP28 ports (a maximum of 2 physical ports)
RTC	Supported
RPS	Not supported
PoE	Not supported
Rated voltage range	100 V AC to 240 V AC, 50/60 Hz -48 V DC to -60 V DC
Maximum voltage range	90 V AC to 264 V AC, 47 Hz to 63 Hz -38.4 V DC to -72 V DC
Maximum power consumption (100% throughput, full speed of fans)	279 W
Typical power consumption (30% of traffic load, tested according to ATIS standard)	194 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.).
Storage temperature	-40°C to +70°C (-40°F to +158°F)
Noise under normal temperature (27°C, sound power)	< 65 dB(A)
Relative humidity	5% to 95%, noncondensing
Operating altitude	0-5000 m (0-16404 ft.)
Certification	EMC certification Safety certification Manufacturing certification
Part number	02351MXN