To avoid any equipment damage or bodily injury caused by incorrect use, read the following safety recommendations before installation. Note that the recommendations do not cover every possible hazardous condition.

· Before cleaning the switch, remove all power cords from the switch. Do not clean the switch with wet cloth or liquid.

· Do not place the switch near water or in a damp environment. Prevent water or moisture from entering the switch chassis.

· Do not place the switch on an unstable case or desk. The switch might be severely damaged in case of a fall.

· Ensure good ventilation of the equipment room and keep the air inlet and outlet vents of the switch free of obstruction.

· Connect the yellow-green protection grounding cable before power-on.

· Make sure the operating voltage is in the required range.

· To avoid electrical shocks, do not open the chassis while the switch is operating or when the switch is just powered off.

· When replacing field replaceable units (FRUs), including power modules and fan trays, wear an ESD wrist strap to avoid damaging the units.

Examining the installation site

The switch must be used indoors.

Mount your switch in a rack and verify the following items:

· Adequate clearance is reserved at the air inlet and outlet vents for ventilation.

· The rack has a good ventilation system.

· Identify the hot aisle and cold aisle at the installation site, and make sure ambient air flows into the switch from the cold aisle and exhausts to the hot aisle.

· Identify the airflow designs of neighboring devices, and prevent hot air flowing out of the neighboring devices from entering the top device.

· The rack is sturdy enough to support the switch and its accessories.

· The rack is reliably grounded.

To ensure correct operation and long service life of your switch, install it in an environment that meets the requirements described in the following subsections.

Temperature/humidity

Maintain appropriate temperature and humidity in the equipment room.

· Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical property change of materials, and metal corrosion.

· Lasting low relative humidity can cause washer contraction and ESD and cause problems including loose mounting screws and circuit failure.

· High temperature can accelerate the aging of insulation materials and significantly lower the reliability and lifespan of the switch.

For the temperature and humidity requirements for the switch, see "Technical specifications."

Cleanliness

Dust buildup on the chassis might result in electrostatic adsorption, which causes poor contact of metal components and contact points, especially when indoor relative humidity is low. In the worst case, electrostatic adsorption can cause communication failure.

Table 1 Dust concentration limit in the equipment room

Substance	Particle diameter	Concentration limit
Dust particulate	≥ 5 µm	≤ 3 x 104 particles/m3 (No visible dust on desk in three days)
Suspended dust	≤ 75 µm	≤ 0.2 mg/m3
Sedimentary dust	75 µm to 150 µm	≤ 1.5 mg/m3
Sand	≥ 150 µm	≤ 30 mg/m3

The equipment room must also meet limits on salts, acids, and sulfides to eliminate corrosion and premature aging of components, as shown in Table 2.

Table 2 Harmful gas limits in the equipment room

Gas	Maximum concentration (mg/m3)
SO2	0.2
H2S	0.006
NH3	0.05
Cl2	0.01
NO₂	0.04

EMI

All electromagnetic interference (EMI) sources, from outside or inside of the switch and application system, adversely affect the switch in the following ways:

· A conduction pattern of capacitance coupling.

· Inductance coupling.

· Electromagnetic wave radiation.

· Common impedance (including the grounding system) coupling.

To prevent EMI, use the following guidelines:

· If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE) to filter interference from the power grid.

· Keep the switch far away from radio transmitting stations, radar stations, and high-frequency devices.

· Use electromagnetic shielding, for example, shielded interface cables, when necessary.

· To prevent signal ports from getting damaged by overvoltage or overcurrent caused by lightning strikes, route interface cables only indoors.

Laser safety

WARNING!

· The switch is a Class 1M laser device.

· Disconnected optical fibers or transceiver modules might emit invisible laser light. Do not stare into beams or view directly with optical instruments when the switch is operating.

Installation tools

No installation tools are provided with the switch. Prepare the following tools yourself:

· Phillips screwdriver.

· ESD wrist strap.

· Marker.

Installation accessories

Before installation, make sure you have all the required installation accessories. If an installation accessory is damaged or lost, purchase a new one by using the BOM code in Table 3.

Table 3 Installation accessories

BOM code	Description	Quantity	Applicable device models
2150A03X	S9850-32H mounting brackets	1 pair, provided	S9850-32H
2150A0AN	S6850-56HF and S6850-2C mounting brackets	1 pair, provided	· S6850-56HF · S6850-2C
2150A0AP	S9850-4C mounting bracket	1 pair, provided	S9850-4C
2150A050	1U long slide rail and chassis rail	1 pair, provided	· S6850-56HF · S9850-32H
2150A0CP	1U super-short slide rail and chassis rail	Optional	S6850-56HF
2150A05D	1U short slide rail and chassis rail	· S6850-2C: provided · S9850-32H: optional	· S6850-2C · S9850-32H
2150A05N	2U short slide rail and chassis rail	Provided	S9850-4C
N/A	M6 screw and cage nut	User supplied	· S6850 switch series · S9850 switch series
0404A0KM	Grounding cable	1, provided	· S6850 switch series · S9850 switch series
26010553	Grounding screw	2, provided	· S6850 switch series · S9850 switch series
2114A09C	Power module filler panel	· S6850-56HF, S6850-2C, and S9850-32H: 1, provided · S9850-4C: 2, provided	· S6850 switch series · S9850 switch series
2114A085	Expansion module filler panel	· S6850-2C: 1, provided · S9850-4C: 3, provided	· S6850-2C · S9850-4C
N/A	Releasable cable tie	User supplied	· S6850 switch series · S9850 switch series
04042967	Console cable	1, provided	· S6850 switch series · S9850 switch series
14990101	SFP port dust cap	Same as the number of SFP/SFP+/SFP28 ports	· S6850 switch series · S9850 switch series
1499A01G	QSFP port dust cap	Same as the number of QSFP+/QSFP28 ports	· S6850 switch series · S9850 switch series

Installing the switch

CAUTION:

Keep the tamper-proof seal on a mounting screw on the chassis cover intact, and if you want to open the chassis, contact H3C for permission. Otherwise, H3C shall not be liable for any consequence caused thereby.

Figure 1 Hardware installation flow

Installing the switch in a 19-inch rack

Rack-mounting procedures at a glance

Figure 2 Rack-mounting procedure

NOTE:

If a rack shelf is available, you can put the switch on the rack shelf and slide the switch to a position so that the mounting brackets make close contact with the front rack posts. Then use screws to secure the mounting brackets to the rack.

Rack-mounting requirements

Figure 3 S6850-56HF chassis dimensions (mounting brackets installed at the port side, left-side view)

(1) Power module handle

(2) Mounting bracket

Figure 4 S6850-56HF chassis dimensions (mounting brackets installed at the power module side, left-side view)

(1) Power module handle

(2) Mounting bracket

Figure 5 S6850-2C chassis dimensions (mounting brackets installed at the port side, left-side view)

(1) Power module handle

(2) Mounting bracket

Figure 6 S6850-2C chassis dimensions (mounting brackets installed at the power module side, left-side view)

(1) Power module handle

(2) Mounting bracket

Figure 7 S9850-4C chassis dimensions (mounting brackets installed at the port side, left-side view)

(1) Power module handle	(2) Mounting bracket
(3) Cable management bracket

Figure 8 S9850-4C chassis dimensions (mounting brackets installed at the power module side, left-side view)

(1) Cable management bracket	(2) Power module handle
(3) Mounting bracket

Figure 9 S9850-32H chassis dimensions (mounting brackets installed at the port side, left-side view)

(1) Power module handle

(2) Mounting bracket

Figure 10 S9850-32H chassis dimensions (mounting brackets installed at the power module side, left-side view)

(1) Power module handle

(2) Mounting bracket

Table 4 Distance requirements between the front and rear rack posts

Switch model	Installation method	Chassis dimensions	Distance between the front and rear rack posts	Rack requirements
S6850-56HF	Mounting brackets and long slide rails (provided)	· Height—43.6 mm (1.72 in)/1 RU · Width—440 mm (17.32 in) · Depth—486 mm (19.13 in) ¡ 460 mm (18.11 in) for the chassis ¡ 26 mm (1.02 in) for the power module/fan tray handles	692 to 853 mm (27.24 to 33.58 in)	· A minimum of 800 mm (31.50 in) in depth (recommended) · A minimum of 130 mm (5.12 in) between the front rack post and the front door. · A minimum of 550 mm (21.65 in) between the front rack post and the rear door.
	Mounting brackets and super-short slide rails (optional, chassis rails not reaching out of the chassis)		401 to 565 mm (15.79 to 22.24 in)
	Mounting brackets and super-short slide rails (optional, chassis rails reaching out of the chassis)		499 to 692 mm (19.65 to 27.24 in)
S6850-2C	Mounting brackets at the port side	· Height—44.2 mm (1.74 in)/1 RU · Width—440 mm (17.32 in) · Depth—686 mm (27.01 in) ¡ 660 mm (25.98 in) for the chassis ¡ 26 mm (1.02 in) for the power module/fan tray handles	519 to 768 mm (20.43 to 30.24 in)	· A minimum of 1000 mm (39.37 in) in depth (recommended) · A minimum of 130 mm (5.12 in) between the front rack post and the front door. · A minimum of 750 mm (29.53 in) between the front rack post and the rear door.
S6850-2C	Mounting brackets at the power module side		519 to 768 mm (20.43 to 30.24 in)
S9850-4C	Mounting brackets at the port side	· Height—88.1 mm (3.47 in)/2 RU · Width—440 mm (17.32 in) · Depth—776 mm (33.55 in) ¡ 660 mm (25.98 in) for the chassis ¡ 26 mm (1.02 in) for the power module/fan tray handles ¡ 90 mm (3.54) for the mounting brackets	518 to 923 mm (20.39 to 36.34 in)	· A minimum of 1000 mm (39.37 in) in depth (recommended) · A minimum of 130 mm (5.12 in) between the front rack post and the front door. · A minimum of 750 mm (29.53 in) between the front rack post and the rear door.
S9850-4C	Mounting brackets at the power module side	· Height—88.1 mm (3.47 in)/2 RU · Width—440 mm (17.32 in) · Depth—750 mm (29.53 in) ¡ 660 mm (25.98 in) for the chassis ¡ 90 mm (3.54) for the mounting brackets	518 to 858 mm (20.39 to 33.78 in)
S9850-32H	Mounting brackets and long slide rails (provided)	· Height—43.6 mm (1.72 in)/1 RU · Width—440 mm (17.32 in) · Depth—486 mm (19.13 in) ¡ 460 mm (18.11 in) for the chassis ¡ 26 mm (1.02 in) for the power module/fan tray handles	621 to 853 mm (24.45 to 33.58 in)	· A minimum of 1000 mm (39.37 in) in depth (recommended) · A minimum of 130 mm (5.12 in) between the front rack post and the front door. · A minimum of 550 mm (21.65 in) between the front rack post and the rear door.
S9850-32H	Mounting brackets and short slide rails (provided)		401 to 633 mm (15.79 to 24.92 in)

Installation accessories

Table 5 Installation accessories

Switch model	Mounting brackets (provided)	Cable management brackets	Rack mounting rail kit	Code of rack mounting rail kit
S6850-56HF	1U high, one pair. See Figure 11.	N/A	1U high, including one pair of long slide rails and one pair of chassis rails (provided). See Figure 14.	2150A050
S6850-56HF	1U high, one pair. See Figure 11.	N/A	1U high, including one pair of super-short slide rails and one pair of chassis rails (optional). See Figure 16.	2150A0CP
S6850-2C	1U high, one pair. See Figure 11.	N/A	1U high, including one pair of short slide rails and one pair of chassis rails (provided). See Figure 15.	2150A05D
S9850-4C	2U high, one pair. See Figure 12.	One pair (provided). See Figure 12.	2U high, including one pair of slide rails and one pair of chassis rails (provided). See Figure 17.	2150A05N
S9850-32H	1U high, one pair. See Figure 13.	N/A	1U high, including one pair of long slide rails and one pair of chassis rails (provided). See Figure 14.	2150A050
S9850-32H	1U high, one pair. See Figure 13.	N/A	1U high, including one pair of short slide rails and one pair of chassis rails (optional). See Figure 15.	2150A05D

Figure 11 Mounting brackets provided with the S6850-56HF and S6850-2C switches

Figure 12 Mounting brackets provided with the S9850-4C switch

(1) Cable management bracket	(2) Mounting bracket

Figure 13 Mounting brackets provided with the S9850-32H switch

Figure 14 1U long slide rail and chassis rail

(1) Chassis rail	(2) Long slide rail

Figure 15 1U short slide rail and chassis rail

Figure 16 1U super-short slide rail and chassis rail

(1) Chassis rail	(2) Super-short slide rail

Figure 17 2U slide rail and chassis rail

(1) Chassis rail	(2) Slide rail

Mounting brackets, chassis rails, and grounding cable installation positions

The switch has one mounting position near the network ports and one mounting position near the power modules for mounting brackets.

The S6850-56HF switch provides two grounding points: primary grounding point (with a grounding sign) and auxiliary grounding point, as shown in Figure 18. The S6850-2C switch provides two grounding points: primary grounding point (with a grounding sign) and auxiliary grounding point, as shown in Figure 19. The S9850-4C switch provides three grounding points: primary grounding point (with a grounding sign), auxiliary grounding point 1, and auxiliary grounding point 2, as shown in Figure 20. The S9850-32H switch provides two grounding points: primary grounding point (with a grounding sign) and auxiliary grounding point, as shown in Figure 21.

Select installation positions for the mounting brackets, chassis rails, and grounding cable as required.

Figure 18 Mounting brackets and grounding cable installation positions on the S6850-56HF switch

(1) Power module-side installation position for the mounting bracket
(2) Primary grounding point	(3) Auxiliary grounding point
(4) Port-side installation position for the mounting bracket

Figure 19 Mounting brackets and grounding cable installation positions on the S6850-2C switch

(1) Power module-side installation position for the mounting bracket
(2) Primary grounding point	(3) Auxiliary grounding point
(4) Port-side installation position for the mounting bracket

Figure 20 Mounting brackets and grounding cable installation positions on the S9850-4C switch

(1) Auxiliary grounding point 2	(2) Power module-side installation position for the mounting bracket
(3) Primary grounding point	(4) Port-side installation position for the mounting bracket
(5) Auxiliary grounding point 1

Figure 21 Mounting brackets and grounding cable installation positions on the S9850-32H switch

(1) Power module-side installation position for the mounting bracket
(2) Primary grounding point	(3) Auxiliary grounding point
(4) Port-side installation position for the mounting bracket

Attaching the mounting brackets and chassis rails to the chassis

1. Place the wide flange of the mounting bracket against the chassis side panel. Align the mounting bracket installation holes with the appropriate screw holes in the chassis. Use the provided M4 screws to attach the mounting bracket to the chassis (recommended torque: 12 kgf-cm).

¡ To install the mounting brackets at the port-side mounting position, see Figure 22, Figure 23, Figure 24, Figure 28, Figure 30, and Figure 32.

Use four installation holes to secure the mounting brackets to the S6850-56HF, S6850-2C, and S9850-4C switches. Use three installation holes to secure the mounting brackets to the S9850-32H switch.

¡ To install the mounting brackets at the power module-side mounting position, see Figure 25, Figure 26, Figure 27, Figure 29, Figure 31, and Figure 33.

Use four installation holes to secure the mounting brackets to the switch.

2. Determine the installation position of the chassis rails based on the position of mounting brackets and the distance between the front and rear rack posts.

Table 6 Chassis rail installation position

Switch model	Mounting bracket position	Distance between the front and rear rack posts	Chassis rail installation position
S6850-56HF (long slide rails)	Port-side mounting position, as shown in Figure 22	692 to 788 mm (27.24 to 31.02 in)	Position a
	Port-side mounting position, as shown in Figure 22	692 to 853 mm (27.24 to 33.58 in)	Position b
	Power module-side mounting position, as shown in Figure 25	692 to 788 mm (27.24 to 31.02 in)	Position c
	Power module-side mounting position, as shown in Figure 25	692 to 853 mm (27.24 to 33.58 in)	Position d
S6850-56HF (super-short slide rails, chassis rails not reaching out of the chassis)	Port-side mounting position, as shown in Figure 23	401 to 500 mm (15.79 to 19.69 in)	Position a
	Port-side mounting position, as shown in Figure 23	457 to 565 mm (17.99 to 22.24 in)	Position b
	Power module-side mounting position, as shown in Figure 26	401 to 500 mm (15.79 to 19.69 in)	Position c
	Power module-side mounting position, as shown in Figure 26	457 to 565 mm (17.99 to 22.24 in)	Position d
S6850-56HF (super-short slide rails, chassis rails reaching out of the chassis)	Port-side mounting position, as shown in Figure 24	499 to 627 mm (19.65 to 24.69 in)	Position a
	Port-side mounting position, as shown in Figure 24	564 to 692 mm (22.20 to 27.24 in)	Position b
	Power module-side mounting position, as shown in Figure 27	499 to 627 mm (19.65 to 24.69 in)	Position c
	Power module-side mounting position, as shown in Figure 27	564 to 692 mm (22.20 to 27.24 in)	Position d
S6850-2C	Port-side mounting position, as shown in Figure 28	519 to 638 mm (20.43 to 25.12 in)	Position a
		524 to 703 mm (20.63 to 27.68 in)	Position b
		589 to 768 mm (23.19 to 30.24 in)	Position c
		654 to 833 mm (25.75 to 32.80 in)	Position d
	Power module-side mounting position, as shown in Figure 29	589 to 768 mm (23.19 to 30.24 in)	Position e
		524 to 703 mm (20.63 to 27.68 in)	Position f
		520 to 638 mm (20.47 to 25.12 in)	Position g
S9850-4C	Port-side mounting position, as shown in Figure 30	675 to 923 mm (26.57 to 36.34 in)	Position a
		611 to 858 mm (24.06 to 33.78 in)	Position b
		546 to 793 mm (21.50 to 31.22 in)	Position c
		518 to 728 mm (20.39 to 28.66 in)	Position d
	Power module-side mounting position, as shown in Figure 31	518 to 728 mm (20.39 to 28.66 in)	Position e
		546 to 793 mm (21.50 to 31.22 in)	Position f
		611 to 858 mm (24.06 to 33.78 in)	Position g
S9850-32H (long slide rails)	Port-side mounting position, as shown Figure 32	621 to 788 mm (24.45 to 31.02 in)	Position a
	Port-side mounting position, as shown Figure 32	621 to 853 mm (24.45 to 33.58 in)	Position b
	Power module-side mounting position, as shown in Figure 33	621 to 853 mm (24.45 to 33.58 in)	Position c
	Power module-side mounting position, as shown in Figure 33	621 to 788 mm (24.45 to 31.02 in)	Position d
S9850-32H (short slide rails)	Port-side mounting position, as shown in Figure 32	401 to 588 mm (15.79 to 23.15 in)	Position a
	Port-side mounting position, as shown in Figure 32	454 to 633 mm (17.87 to 24.92 in)	Position b
	Power module-side mounting position, as shown in Figure 33	454 to 633 mm (17.87 to 24.92 in)	Position c
	Power module-side mounting position, as shown in Figure 33	401 to 568 mm (15.79 to 22.36 in)	Position d

3. Place the chassis rail against the chassis side panel. Align the chassis rail installation holes with the screw holes. Use the provided M4 screws to attach the chassis rail to the chassis (recommended torque: 12 kgf-cm). See Figure 22 to Figure 31.

You can use super-short slide rails and long chassis rails to rack-mount the S6850-56HF switch. Based on the rack depth, install the long chassis rails with the chassis rails not reaching out of the chassis, as shown in Figure 23 and Figure 26 or with the chassis rails reaching out of the chassis, as shown in Figure 24 and Figure 27.

Figure 22 Attaching the mounting brackets and chassis rails to the S6850-56HF switch (port-side mounting position for the mounting brackets, long slide rails)

Figure 23 Attaching the mounting brackets and chassis rails to the S6850-56HF switch (port-side mounting position for the mounting brackets, super-short slide rails, chassis rails not reaching out of the chassis)

Figure 24 Attaching the mounting brackets and chassis rails to the S6850-56HF switch (port-side mounting position for the mounting brackets, super-short slide rails, chassis rails reaching out of the chassis)

Figure 25 Attaching the mounting brackets and chassis rails to the S6850-56HF switch (power module-side mounting position for the mounting brackets, long slide rails)

Figure 26 Attaching the mounting brackets and chassis rails to the S6850-56HF switch (power module-side mounting position for the mounting brackets, super-short slide rails, chassis rails not reaching out of the chassis)

Figure 27 Attaching the mounting brackets and chassis rails to the S6850-56HF switch (power module-side mounting position for the mounting brackets, super-short slide rails , chassis rails reaching out of the chassis)

Figure 28 Attaching the mounting brackets and chassis rails to the S6850-2C switch (port-side mounting position for the mounting brackets)

Figure 29 Attaching the mounting brackets and chassis rails to the S6850-2C switch (power module-side mounting position for the mounting brackets)

Figure 30 Attaching the mounting brackets and chassis rails to the S9850-4C switch (port-side mounting position for the mounting brackets)

Figure 31 Attaching the mounting brackets and chassis rails to the S9850-4C switch (power module-side mounting position for the mounting brackets)

Figure 32 Attaching the mounting brackets and chassis rails to the S9850-32H switch (port-side mounting position for the mounting brackets)

Figure 33 Attaching the mounting brackets and chassis rails to the S9850-32H switch (power module-side mounting position for the mounting brackets)

NOTE:

Secure the mounting brackets and chassis rails to both sides of the chassis in the same way.

Connecting the grounding cable to the chassis

CAUTION:

If you use one of these grounding points, you must connect the grounding cable to the grounding point before you mount the switch in the rack.

For the S6850-56HF, S6850-2C and S9850-32H switches, the primary grounding point and auxiliary grounding point are located on the left panel. For the S9850-4C switch, the primary grounding point and auxiliary grounding point 1 are located on the left panel, and auxiliary grounding point 2 is located on the rear panel.

As a best practice, use the primary grounding point or auxiliary grounding point on the left panel. The grounding cable and grounding screw that come with the switch are suitable only for these two grounding points. To use auxiliary grounding point 2 on the S9850-4C switch, prepare a grounding cable with a ring terminal at each end yourself or purchase the grounding cable (code 0404A0CP) from H3C.

The procedure for connecting the grounding cable to the grounding points on the left panel is the same. This section uses the primary grounding point on the S6850-56HF switch as an example.

To connect the grounding cable to a grounding point on the left panel:

1. Choose a grounding point as required.

When you install the mounting brackets at the port-side mounting position, choose the auxiliary grounding point. When you install the mounting brackets at the power module-side mounting position, choose the primary grounding point.

This example uses the primary grounding point.

2. Unpack the grounding cable and grounding screws.

3. Use the two grounding screws to attach the two-hole grounding lug of the grounding cable to the grounding holes at the grounding point (recommended torque: 20 kgf-cm). Use a screwdriver to tighten the screws. See Figure 34.

Figure 34 Attaching the grounding cable to the primary grounding point on the S6850-56HF switch

To connect the grounding cable to auxiliary grounding point 2 on the S9850-4C:

1. Remove the grounding screw from auxiliary grounding point 2.

2. Use the grounding screw to attach the ring terminal of the user-supplied grounding cable to the grounding hole at the grounding point. Use a screwdriver to fasten the screw (recommended torque: 20 kgf-cm). See Figure 35.

Figure 35 Attaching the grounding cable to auxiliary grounding point 2 on the S9850-4C switch

Attaching the slide rails to the rack

The procedure is the same for attaching 1U and 2U slide rails to the rack. This section uses the 1U slide rails as an example.

To attach the slide rails to the rack:

1. Identify the slide rail installation position in the rack.

2. Install cage nuts (user-supplied) in the mounting holes in the rack posts.

3. Align the screw holes in one slide rail with the cage nuts in a rear rack post. Use user-supplied M6 screws to attach the slide rail to the post (recommended torque: 30 kgf-cm). See Figure 36.

4. Repeat the preceding steps to attach the other slide rail to the other rear rack post.

Keep the two slide rails at the same height so the slide rails can attach into the chassis rails.

Figure 36 Installing the 1U slide rails

Mounting the switch in the rack

This task requires two people.

To mount the switch in the rack:

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Verify that the mounting brackets and chassis rails have been securely attached to the switch chassis.

3. Verify that the slide rails have been correctly attached to the rear rack posts.

4. Attach cage nuts (user-supplied) to the front rack posts and make sure they are at the same level as the slide rails.

CAUTION:

To rack-mount the S9850-4C switch by using 2U high mounting brackets and slide rails, use four M6 screws and four cage nuts to attach each mounting bracket to the rack, as shown in Figure 41 and Figure 42.

5. One person performs the following operations:

a. Supporting the bottom of the switch, aligns the chassis rails with the slide rails on the rack posts.

b. Pushes the switch slowly to slide the chassis rails along the slide rails until the mounting brackets are flush with the rack posts.

IMPORTANT:

· If you use long slide rails to rack-mount the S6850-56HF, make sure the front ends of the long slide rails reach out of the chassis rails for a maximum of 20 mm (0.79 in). If you use super-short slide rails to rack-mount the S6850-56HF, make sure the front ends of the super-short slide rails reach inside the chassis rails for a minimum of 90 mm (3.54 in) after installation.

· To rack-mount the S6850-2C and S9850-32H, make sure the front ends of the slide rails reach out of the chassis rails for a minimum of 20 mm (0.79 in) after installation.

· To rack-mount the S9850-4C, make sure the front ends of the slide rails reach out of the chassis rails for a minimum of 30 mm (1.18 in) after installation.

6. Another person uses user-supplied M6 screws to attach the mounting brackets to the rack (recommended torque: 30 kgf-cm).

Figure 37 Mounting the S6850-56HF switch in the rack (port-side mounting position for the mounting brackets)

Figure 38 Mounting the S6850-56HF switch in the rack (power module-side mounting position for the mounting brackets)

Figure 39 Mounting the S6850-2C switch in the rack (port-side mounting position for the mounting brackets)

Figure 40 Mounting the S6850-2C switch in the rack (power module-side mounting position for the mounting brackets)

Figure 41 Mounting the S9850-4C switch in the rack (port-side mounting position for the mounting brackets)

Figure 42 Mounting the S9850-4C switch in the rack (power module-side mounting position for the mounting brackets)

Figure 43 Mounting the S9850-32H switch in the rack (port-side mounting position for the mounting brackets)

Figure 44 Mounting the S9850-32H switch in the rack (power module-side mounting position for the mounting brackets)

Grounding the switch

CAUTION:

· Correctly connecting the grounding cable is crucial to lightning protection and EMI protection.

· Connect the grounding cable to the grounding system in the equipment room. Do not connect it to a fire main or lightning rod.

The power input end of the switch has a noise filter, whose central ground is directly connected to the chassis to form the chassis ground (commonly known as PGND). You must securely connect this chassis ground to the earth so the faradism and leakage electricity can be safely released to the earth to minimize EMI susceptibility of the switch.

You can ground a switch by using a grounding strip at the installation site.

NOTE:

· The grounding terminals in this section are for illustration only.

· As a best practice to guarantee the grounding effect, use the grounding cable provided with the switch to connect to the grounding strip in the equipment room.

To connect the grounding cable:

1. Attach the two-hole grounding lug of the grounding cable to a grounding point on the chassis. For more information, see "Connecting the grounding cable to the chassis."

2. Remove the hex nut of a grounding post on the grounding strip.

3. Attach the ring terminal of the grounding cable to the grounding post on the grounding strip, and secure the ring terminal to the grounding post with the hex nut.

Figure 45 Connecting the grounding cable to a grounding strip

(1) Hex nut	(2) Ring terminal
(3) Grounding post	(4) Grounding strip

Installing/removing fan trays

CAUTION:

The switch has multiple fan tray slots. To ensure good ventilation of the switch, follow these guidelines to install and remove fan trays:

· The switch is provided with the fan tray slots empty. Before powering on the switch, make sure all fan tray slots have fan trays installed and the fan trays are the same model.

· Make sure all slots have a module or filler panel installed when the switch is operating.

· If multiple fan trays fail on an operating S6850-56HF, S6850-2C, or S9850-32H switch, do not remove the fan trays at the same time. Replace the fan trays one after another and finish replacing a fan tray within 3 minutes.

· If a fan tray fails on an operating S9850-4C switch, replace the fan tray immediately and keep the failed fan tray in position before replacement. If two fan trays fail, finish replacing the fan trays within 1 minute.

NOTE:

Both the LSWM1FANSA, LSWM1FANSAB, LSWM1BFANSC and LSWM1BFANSCB fan trays are available in black and silver models. Silver models support electronic labels and black models do not.

The installation and removal procedures are the same for the LSWM1FANSA, LSWM1FANSAB, LSWM1BFANSC, and LSWM1BFANSCB fan trays. The following installation and removal procedures use the LSWM1FANSA fan tray as an example.

Installing a fan tray

CAUTION:

To prevent damage to the fan tray or the connectors on the backplane, insert the fan tray gently. If you encounter a hard resistance while inserting the fan tray, pull out the fan tray and insert it again.

IMPORTANT:

Before powering on the switch, make sure the fan tray airflow direction and the preferred airflow direction of the switch are the same. If they are not the same, the system generates traps and logs. You can use the fan prefer-direction command to configure the preferred airflow direction for the switch. By default, the preferred airflow direction of the switch is from the port side to the power module side. For more information about the fan prefer-direction command, see H3C S6850 & S9850 Switch Series Fundamentals Command Reference.

Select fan trays for the switch as needed. For the available fan trays and their specifications, see "Fan trays."

To install a fan tray:

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Unpack the fan tray and verify that the fan tray model is correct.

3. Orient the fan tray with the "TOP" mark on top. Grasp the handle of the fan tray with one hand and support the fan tray bottom with the other, and slide the fan tray along the guide rails into the slot until the fan tray is fully seated in the slot and has a firm contact with the backplane. See Figure 46.

Figure 46 Installing an LSWM1FANSA fan tray in the S6850-56HF switch

Removing a fan tray

WARNING!

· Ensure electricity safety and never touch the rotating fans when you hot-swap a fan tray.

· To prevent a fan from causing loud noise, do not touch the fan blades and rotation axis, even if the fan is not rotating.

To remove a fan tray:

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Grasp the handle of the fan tray with one hand and pull the fan tray part way out of the slot. Support the fan tray bottom with the other and pull the fan tray completely out of the slot.

3. Put the removed fan tray in an antistatic bag.

Figure 47 Removing an LSWM1FANSA fan tray

Installing/removing power modules

WARNING!

· To avoid bodily injury and device damage, strictly follow the procedures in Figure 48 and Figure 49 to install and remove a power module.

· Provide a separate circuit breaker for each power module.

The S6850-56HF, S6850-2C, and S9850-32H switches each have two power module slots. The S9850-4C switch has four power module slots. The S6850-56HF, S6850-2C, and S9850-32H switches each come with one power module slot empty and one installed with a filler panel. The S9850-4C switch comes with two power module slots empty and two installed with filler panels. You can install power modules for the switch as required.

For information about the available power modules, see "Appendix B FRUs."

Figure 48 Installation procedure

Figure 49 Removal procedure

Installing a power module

CAUTION:

· Follow the forward inertia of the power module when inserting it into the chassis, and make sure the power module has firm contact with the connectors on the backplane.

· To prevent damage to the connectors inside the switch chassis, insert the power module gently. If you encounter a hard resistance while inserting the power module, pull out the power module and insert it again.

The LSVM1AC650 and LSVM1DC650 installation procedure is the same on the S6850 and S9850 series switches. The figures in this section use the S6850-56HF switch as an example.

To install a power module:

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Remove the filler panel, if any, from the target power module slot, as shown in Figure 50.

Figure 50 Removing a filler panel

3. Unpack the power module and verify that the power module model is correct.

4. Correctly orient the power module with the words on the power module upward. Grasp the handle of the power module with one hand and support its bottom with the other, and slide the power module slowly along the guide rails into the slot.

The slot is foolproof. If you cannot insert the power module into the slot, re-orient the power module rather than use excessive force to push it in.

Figure 51 Installing a power module (LSVM1AC650)

Removing a power module

CAUTION:

· When an S6850-56HF, S6850-2C, or S9850-32H switch has two power modules in 1+1 redundancy mode, removing one power module does not affect the operation of the switch. When the switch has only one power module installed, removing the power module powers off the switch.

· When an S9850-4C switch has power modules in 2+1 or 2+2 redundancy mode, removing one or two power modules does not affect the operation of the switch. When the switch has only two power modules installed, removing power modules powers off the switch or causes power insufficiency.

The LSVM1AC650 and LSVM1DC650 removal procedure is the same on the S6850 and S9850 series switches. The figures in this section use the S6850-56HF switch as an example.

To remove a power module:

1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2. Remove the power cord from the power module. To remove a DC power cord, squeeze the tabs on the power cord connector with your thumb and forefinger, and then pull the connector out, as shown in Figure 52.

3. Hold the handle on the power module with one hand, pivot the latch on the power module to the right with your thumb, and pull the power module part way out of the slot, as shown in Figure 53.

4. Supporting the power module bottom with one hand, slowly pull the power module out with the other hand.

5. Put the removed power module in an antistatic bag for future use.

6. If you are not to install a new power module, install a filler panel in the slot to ensure good ventilation in the switch, as shown in Figure 54.

Figure 52 Removing the DC power cord

(1) Press the tabs on the power cord connector with your thumb and forefinger
(2) Pull the power cord connector out

Figure 53 Removing the power module

(1) Pivot the latch to the right with your thumb	(2) Pull the power module out

Figure 54 Installing a filler panel

Connecting the power cords

WARNING!

Provide a circuit breaker for each power input. When you connect a power cord, make sure the circuit breaker is switched off.

Connecting an AC power cord

1. Insert the female connector of the AC power cord supplied with the power module into the power receptacle on the power module.

2. Use a cable tie to secure the power cord to the handle of the power module, as shown in Figure 55.

3. Connect the other end of the power cord to an AC power outlet.

Figure 55 Connecting an AC power cord to the LSVM1AC650 power module

(1) Cable tie
(2) Tighten the cable tie to secure the power cord to the handle of the power module

Connecting a DC power cord

1. Align the power cord plug with the power receptacle on the power module, and insert the plug into the receptacle (see Figure 56).

The plug and receptacle are foolproof. If you cannot insert the plug into the receptacle, re-orient the plug rather than use excessive force to push it in.

2. Use a cable tie to secure the power cord to the handle of the power module, as shown in Figure 55.

3. Connect the other end of the power cord to the DC power source.

Figure 56 Connecting a DC power cord to the LSVM1DC650 power module

Installing/removing expansion modules

CAUTION:

When you install or remove an expansion module, follow these guidelines:

· Never touch the components on the expansion module surface with bare hands.

· Do not use excessive force.

The S6850-2C switch provides two expansion slots. For the available expansion modules, see "Appendix B FRUs."

The S9850-4C switch provides four expansion slots. For the available expansion modules, see "Appendix B FRUs."

The installation and removal procedures are the same for expansion modules. This section installs and removes an LSWM18CQ interface module on the S9850-4C switch.

Installing an expansion module

1. Wear an ESD wrist strap and make sure the wrist strap makes good skin contact and is reliably grounded.

2. (Optional.) If the target expansion slot has a filler panel installed, remove the filler panel, as shown in Figure 57.

a. Use your thumb and forefinger to hold the filler panel through the two holes.

b. Push right the metal tab in the left hole and pull out the filler panel along the guide rails.

Figure 57 Removing the filler panel from the expansion slot

Keep the removed filler panel secure for future use.

3. Unpack the expansion module.

4. Press the latch on the expansion module to release the ejector lever.

Figure 58 LSWM18CQ interface module

(1) Ejector lever	(2) Latch

5. Insert the expansion module slowly into the slot along the guide rails, as shown by callout 1 in Figure 59.

6. Rotate inward the ejector lever as shown by callout 2 in Figure 59 until the latch locks the ejector lever in place.

Figure 59 Installing the LSWM18CQ interface module

Removing an expansion module

CAUTION:

· Before you remove an expansion module, remove the cable from it to avoid cable damage.

· If you are not to install a new expansion module after removing the original one, install a filler panel in the slot to prevent dust and ensure good ventilation.

To remove an expansion module:

1. Prepare an anti-static bag.

2. Wear an ESD wrist strap and make sure the wrist strap makes good skin contact and is reliably grounded.

3. Press the latch to release the ejector lever as shown by callout 1 in Figure 60.

4. Rotate outward the ejector lever as shown by callout 2 in Figure 60.

5. Pull out the expansion module slowly out of the expansion slot, as shown by callout 3 in Figure 60.

6. Place the removed expansion module in the anti-static bag.

Figure 60 Removing an LSWM18CQ interface module

Verifying the installation

After you complete the installation, verify that:

· There is enough space for heat dissipation around the switch, and the rack is stable.

· The grounding cable is securely connected.

· The correct power source is used.

· The power cords are correctly connected.

· All the interface cables are cabled indoors. If any cable is routed outdoors, verify that the socket strip with lightning protection and lightning arresters for network ports have been correctly connected.

Accessing the switch for the first time

Setting up the configuration environment

You can access the switch through the serial console port or the mini USB console port. As a best practice, use the serial console port to access the switch. To access the switch through the mini USB console port, you need to prepare a mini USB console cable yourself.

The example uses a console cable to connect a console terminal (PC) to the serial console port on the switch.

Figure 61 Connecting the serial console port to a terminal

Connecting the console cable

A serial console cable is an 8-core cable, with a crimped RJ-45 connector at one end for connecting to the serial console port of the switch, and a DB-9 female connector at the other end for connecting to the serial port on the console terminal.

Figure 62 Serial console cable

Table 7 Console port signaling and pinout

RJ-45	Signal	DB-9	Signal
1	RTS	8	CTS
2	DTR	6	DSR
3	TXD	2	RXD
4	SG	5	SG
5	SG	5	SG
6	RXD	3	TXD
7	DSR	4	DTR
8	CTS	7	RTS

To connect a terminal (for example, a PC) to the switch by using the serial console cable:

1. Plug the DB-9 female connector of the serial console cable to the serial port of the PC.

2. Connect the RJ-45 connector to the serial console port of the switch.

NOTE:

· Identify the mark on the console port and make sure you are connecting to the correct port.

· The serial ports on PCs do not support hot swapping. To connect a PC to an operating switch, first connect the PC end. To disconnect a PC from an operating switch, first disconnect the switch end.

Connecting the mini USB console cable

A mini USB console cable has a USB mini-Type B connector at one end to connect to the mini USB console port of the switch, and a standard USB Type A connector at the other end to connect to the USB port on the configuration terminal.

To connect to the configuration terminal through the USB mini console cable:

1. Connect the standard USB Type A connector to the USB port of the configuration terminal.

2. Connect the USB mini Type B connector to the Mini USB console port of the switch.

3. Click the following link, or copy it to the address bar on the browser to log in to download page of the USB console driver, and download the driver.

http://www.h3c.com/en/home/USB_Console/

4. Select a driver program according to the operating system you use:

¡ XR21V1410_XR21B1411_Windows_Ver1840_x86_Installer.EXE—32-bit operating system.

¡ XR21V1410_XR21B1411_Windows_Ver1840_x64_Installer.EXE—64-bit operating system.

5. Click Next on the installation wizard.

Figure 63 Device Driver Installation Wizard

6. Click Continue Anyway if the following dialog box appears.

Figure 64 Software Installation

7. Click Finish.

Figure 65 Completing the device driver installation wizard

Setting terminal parameters

To configure and manage the switch through the console port, you must run a terminal emulator program, TeraTermPro or PuTTY, on your configuration terminal. You can use the emulator program to connect a network device, a Telnet site, or an SSH site. For more information about the terminal emulator programs, see the user guides for these programs

The following are the required terminal settings:

· Bits per second—9600.

· Data bits—8.

· Stop bits—1.

· Parity—None.

· Flow control—None.

Powering on the switch

1. Before powering on the switch, verify that the following conditions are met:

¡ All the fan tray slots have a fan tray installed.

¡ The power cords are connected correctly.

¡ The input power voltage is as required by the switch.

¡ The console cable is connected correctly.

¡ The configuration terminal (a PC, for example) has started, and its serial port settings are consistent with the console port settings on the switch.

2. Power on the switch.

During the startup process, you can access BootWare menus to perform tasks such as software upgrade and file management. The BootWare interface and menu options vary by software version. For more information about BootWare menu options, see the software-matching release notes for the device.

3. After the startup completes, you can access the CLI to configure the switch.

For more information about the configuration commands and CLI, see H3C S6850 & S9850 Switch Series Configuration Guides and H3C S6850 & S9850 Switch Series Command References.

Setting up an IRF fabric

You can use H3C IRF technology to connect and virtualize multiple S6850/S9850 switches into a large virtual switch called an "IRF fabric" for flattened network topology, and high availability, scalability, and manageability.

IRF fabric setup flowchart

Figure 66 IRF fabric setup flowchart

To set up an IRF fabric:

Step	Description
1. Plan IRF fabric setup.	Plan the installation site and IRF fabric setup parameters: · Planning IRF fabric size and the installation site · Identifying the master switch and planning IRF member IDs · Planning IRF topology and connections · Identifying physical IRF ports on the member switches · Planning the cabling scheme
2. Install IRF member switches.	See "Installing the switch in a 19-inch rack".
3. Connect ground wires and power cords.	See "Grounding the switch" and "Connecting the power cords."
4. Power on the switches.	N/A
5. Configure basic IRF settings.	See H3C S6850 & S9850 Switch Series Virtual Technologies Configuration Guide.
6. Connect the physical IRF ports.	Connect the physical IRF ports on switches. Use QSFP28/QSFP+ transceiver modules and fibers for connections over long distances. Use QSFP28/QSFP+ cables for connections over short distances. All switches except the master switch automatically reboot, and the IRF fabric is established.

Planning IRF fabric setup

This section describes issues that an IRF fabric setup plan must cover.

Planning IRF fabric size and the installation site

Determine the number of required IRF member switches, depending on the user density and upstream bandwidth requirements. The switching capacity of an IRF fabric equals the total switching capacities of all member switches.

You can use switches of the same series or use switches of both the S6850 and S9850 series to form an IRF fabric.

Plan the installation site depending on your network solution as follows:

· Place all IRF member switches in one rack for centralized high-density access.

· Distribute the IRF member switches in different racks to implement the top-of-rack (ToR) access solution for a data center.

As your business grows, you can add member switches into the IRF fabric to increase the switching capacity without any topology change or replacement.

Identifying the master switch and planning IRF member IDs

Determine which switch you want to use as the master for managing all member switches in the IRF fabric. An IRF fabric has only one master switch. You configure and manage all member switches in the IRF fabric at the command line interface of the master switch.

NOTE:

IRF member switches will automatically elect a master. You can affect the election result by assigning a high member priority to the intended master switch. For more information about master election, see H3C S6850 & S9850 Switch Series Virtual Technologies Configuration Guide.

Prepare an IRF member ID assignment scheme. An IRF fabric uses member IDs to uniquely identify and manage its members, and you must assign each IRF member switch a unique member ID.

Planning IRF topology and connections

You can create an IRF fabric in daisy chain topology, or more reliably, ring topology. In ring topology, the failure of one IRF link does not cause the IRF fabric to split as in daisy chain topology. Rather, the IRF fabric changes to a daisy chain topology without interrupting network services.

You connect the IRF member switches through IRF ports, the logical interfaces for the connections between IRF member switches. Each IRF member switch has two IRF ports: IRF-port 1 and IRF-port 2. To use an IRF port, you must bind a minimum of one physical port to it.

When connecting two neighboring IRF member switches, you must connect the physical ports of IRF-port 1 on one switch to the physical ports of IRF-port 2 on the other switch.

The IRF port connections in the two figures are for illustration only, and more connection methods are available.

Figure 67 IRF fabric in daisy chain topology

Figure 68 IRF fabric in ring topology

You can set up IRF links between S6850/S9850 switches as follows:

· Use a QSFP28 module and fiber or a QSFP28 cable to connect QSFP28 ports for a 100-GE IRF physical connection.

· Use a QSFP+ module and fiber or a QSFP+ cable to connect QSFP28 ports for a 40-GE IRF physical connection.

· Use a QSFP+ module and fiber or a QSFP+ cable to connect QSFP+ ports for a 40-GE IRF physical connection.

You can bind several ports to an IRF port for increased bandwidth and availability.

When you use a QSFP+ DAC cable to connect a pair of peer IRF physical interfaces on S6850 or S9850 switch series, follow these restrictions and guidelines:

· The peer interfaces must both be fixed ports or both be ports on expansion interface modules that are the same model.

· If one interface is a fixed QSFP28 port on the rear panel of an S6850-2C switch, the other interface must also be a fixed QSFP28 port on the rear panel of an S6850-2C switch.

Identifying physical IRF ports on the member switches

Identify the physical ports for IRF connections on the member switches according to your topology and connection scheme.

All the QSFP28 ports and QSFP+ ports on the switches (including those on the interface modules), can be used for IRF connections, except for QSFP28 ports on LSWM18CQMSEC interface modules.

When you select ports in a port group for IRF links, you must use all or none of the ports in the group for IRF links. The ports can be bound to different IRF ports.

On an LSWM116Q interface module of the switches, odd and even numbered ports are separated for grouping. The ports are grouped by port number in order, starting from the lowest odd or even number. Each group contains two ports with consecutive odd or even port numbers.

Planning the cabling scheme

You can use QSFP28/QSFP+ cables, or QSFP28/QSFP+ transceiver modules and fibers to connect the S6850/S9850 switches for IRF connections.

If the switches are all in one equipment room, choose QSFP28/QSFP+ cables for IRF connections. If the switches are far away from one another, choose QSFP28/QSFP+ transceiver modules and fibers for IRF connections.

For more information about available cables, see "Appendix C Ports and LEDs."

The following subsections describe several IRF connection schemes by using the QSFP28 cables and QSFP28 transceiver modules and fibers. As a best practice, use the ring topology for IRF connections.

Connecting the IRF member switches in one rack

Figure 69 shows an example for connecting four IRF member switches in a rack. The switches in the ring topology (see Figure 70) are in the same order as connected in the rack.

Figure 69 Connecting the switches in one rack

Figure 70 IRF fabric topology

Connecting the IRF member switches in a ToR solution

You can install IRF member switches in different racks side by side to deploy a top of rack (ToR) solution.

Figure 71 shows an example for connecting four top of rack IRF member switches. The topology is the same as Figure 70.

Figure 71 ToR cabling

Configuring basic IRF settings

After you install the IRF member switches, power on the switches, and log in to each IRF member switch (see H3C S6850 & S9850 Switch Series Fundamentals Configuration Guide) to configure their member IDs, member priorities, and IRF port bindings.

Follow these guidelines when you configure the switches:

· Assign the master switch higher member priority than any other switch.

· Bind physical ports to IRF port 1 on one switch and to IRF port 2 on the other switch. You perform IRF port binding before or after connecting IRF physical ports depending on the software release.

· Execute the display irf configuration command to verify the basic IRF settings.

For more information about configuring basic IRF settings, see H3C S6850 & S9850 Switch Series Virtual Technologies Configuration Guide.

Connecting the physical IRF ports

CAUTION:

Wear an ESD wrist strap when you install transceiver modules, fibers, and cables. For more information, see the installation guide.

Use transceiver modules and fibers or cables to connect the IRF member switches as planned.

Accessing the IRF fabric to verify the configuration

To verify the basic functionality of the IRF fabric after you finish configuring basic IRF settings and connecting IRF ports:

1. Log in to the IRF fabric through the console port of any member switch.

2. Create a Layer 3 interface, assign it an IP address, and make sure the IRF fabric and the remote network management station can reach each other.

3. Use Telnet or SNMP to access the IRF fabric from the network management station. (See H3C S6850 & S9850 Switch Series Fundamentals Configuration Guide.)

4. Verify that you can manage all member switches as if they were one node.

5. Display the running status of the IRF fabric by using the commands in Table 8.

Table 8 Displaying and maintaining IRF configuration and running status

Task	Command
Display information about the IRF fabric.	display irf
Display all members' IRF configurations.	display irf configuration
Display IRF fabric topology information.	display irf topology

NOTE:

To avoid IP address collision and network problems, configure at least one multi-active detection (MAD) mechanism to detect the presence of multiple identical IRF fabrics and handle collisions. For more information about MAD detection, see H3C S6850 & S9850 Switch Series Virtual Technologies Configuration Guide.

Maintenance and troubleshooting

Power module failure

Symptom

The power module status LED on a power module is not steady green.

For more information about the LEDs on a power module, see H3C LSVM1AC650 & LSVM1DC650 Power Modules User Manual.

Solution

To resolve the issue:

1. Verify that the power cord is connected correctly.

2. Verify that the power source is as required by the switch.

3. Verify that the operating temperature of the switch is in the acceptable range and the power module has good ventilation.

4. If the issue persists, contact H3C Support.

To replace a power module, see "Installing/removing power modules."

Fan tray failure

CAUTION:

The S6850-56HF, S6850-2C, and S9850-32H switches each have five fan tray slots. The S9850-4C switch has two fan tray slots. To replace failed fan trays on an operating switch, follow these guidelines:

Symptom

· The status LED on an LSWM1FANSA or LSWM1FANSAB fan tray is steady orange and the system outputs alarm messages.

· The status LED on an LSWM1BFANSC or LSWM1BFANSCB fan tray is steady yellow and the system outputs alarm messages.

Solution

See "Installing/removing fan trays" to replace the fan tray. If the problem persists, contact H3C Support.

Configuration terminal display problems

No display

Symptom

The configuration terminal displays nothing when the switch is powered on.

Solution

To resolve the issue:

1. Verify that the power system is operating correctly.

2. Verify that the console cable is connected correctly.

3. Verify that the console cable does not have any problems and the terminal settings are correct.

4. If the issue persists, contact H3C Support.

Garbled display

Symptom

The configuration terminal has a garbled display.

Solution

To resolve the issue:

1. Verify that the following settings are configured for the terminal:

¡ Baud rate—9,600.

¡ Data bits—8.

¡ Parity—None.

¡ Stop bits—1.

¡ Flow control—None.

2. If the issue persists, contact H3C Support.

Appendix A Chassis views and technical specifications

Chassis views

S6850-56HF

Figure 72 S6850-56HF front panel

(1) SFP28 port	(2) SFP28 port LED
(3) QSFP28 port	(4) QSFP28 port LED

Figure 73 S6850-56HF rear panel

(1) Mini USB console port	(2) Copper management Ethernet port
(3) Serial console port	(4) USB port
(5) SFP port	(6) SFP port LED
(7) Fan tray 1	(8) Fan tray 2
(9) Fan tray 3	(10) Fan tray 4
(11) Fan tray 5	(12) Power module 1
(13) Power module 2	(14) Fiber management Ethernet port
(15) Fiber Management Ethernet port LED (LINK/ACT)
(16) Copper management Ethernet port LED (ACT)	(17) System status LED (SYS)
(18) Copper management Ethernet port LED (LINK)

The S6850-56HF switch comes with power module slot PWR1 empty and power module slot PWR2 installed with a filler panel. You can install one or two power modules for the switch as needed. In Figure 73, two LSVM1AC650 power modules are installed in the power module slots.

The S6850-56HF switch comes with the five fan tray slots empty. You must install five fan trays of the same model for the switch. In Figure 73, five LSWM1FANSA fan trays are installed in the fan tray slots.

Figure 74 S6850-56HF left panel

(1) Power module handle	(2) Primary grounding point
(3) Auxiliary grounding point	(4) Fan tray handle

S6850-2C

Figure 75 S6850-2C front panel

(1) Expansion module 1

(2) Expansion module 2

Figure 76 S6850-2C rear panel

(1) Mini USB console port	(2) Copper management Ethernet port
(3) Serial console port	(4) USB port
(5) QSFP28 port	(6) Serial label pull tab
(7) Fan tray 1	(8) Fan tray 2
(9) Fan tray 3	(10) Fan tray 4
(11) Fan tray 5	(12) Power module 1
(13) Power module 2	(14) QSFP28 port LED
(15) Fiber management Ethernet port LED (LINK/ACT)
(16) Fiber management Ethernet port	(17) Copper management Ethernet port LED (ACT)
(18) System status LED (SYS)	(19) Copper management Ethernet port LED (LINK)

The ESN serial number and MAC address of the S6850-2C switch can be found on the serial label pull tab.

The S6850-2C switch comes with expansion slot 1 empty and expansion slot 2 installed with a filler panel. You can install one or two expansion modules for the switch as needed. In Figure 75, two LSWM18CQ interface modules are installed in the expansion slots.

The S6850-2C switch comes with power module slot PWR1 empty and power module slot PWR2 installed with a filler panel. You can install one or two power modules for the switch as needed. In Figure 76, two LSVM1AC650 power modules are installed in the power module slots.

The S6850-2C switch comes with the five fan tray slots empty. You must install five fan trays of the same model for the switch. In Figure 76, five LSWM1FANSA fan trays are installed in the fan tray slots.

Figure 77 S6850-2C left panel

(1) Power module handle	(2) Primary grounding point
(3) Auxiliary grounding point	(4) Fan tray handle

S9850-4C

Figure 78 S9850-4C front panel

(1) Expansion module 1	(2) Expansion module 2
(3) Expansion module 4	(4) Expansion module 3

Figure 79 S9850-4C rear panel

(1) Mini USB console port	(2) Copper management Ethernet port
(3) Serial console port	(4) USB port
(5) SFP port	(6) SFP port LED
(7) Fan tray 1	(8) Fan tray 2
(9) Grounding screw (auxiliary grounding point 2)	(10) Power module 4
(11) Power module 3	(12) Power module 2
(13) Fiber management Ethernet port
(14) Fiber management Ethernet port LED (LINK/ACT)
(15) Copper management Ethernet port LED (ACT)	(16) System status LED (SYS)
(17) Copper management Ethernet port LED (LINK)	(18) Power module 1

The S9850-4C switch comes with expansion slot 1 empty and the other three expansion slots each installed with a filler panel. You can install one to four expansion modules for the switch as needed. In Figure 78, four LSWM18CQ interface modules are installed in the expansion slots.

The S9850-4C switch comes with power module slots PWR2 and PWR3 empty and the other two power module slots each installed with a filler panel. You can install two to four power modules for the switch as needed. In Figure 79, four LSVM1AC650 power modules are installed in the power module slots.

The S9850-4C switch comes with the two fan tray slots empty. You must install two fan trays of the same model for the switch. In Figure 79, two LSWM1BFANSC fan trays are installed in the fan tray slots.

Figure 80 S9850-4C left panel

(1) Fan tray handle	(2) Primary grounding point
(3) Auxiliary grounding point 1	(4) Power module handle

S9850-32H

Figure 81 S9850-32H front panel

(1) QSFP28 port	(2) QSFP28 port LED

Figure 82 S9850-32H rear panel

(1) Mini USB console port	(2) Copper management Ethernet port
(3) Serial console port	(4) USB port
(5) SFP port	(6) SFP port LED
(7) Fan tray 1	(8) Fan tray 2
(9) Fan tray 3	(10) Fan tray 4
(11) Fan tray 5	(12) Power module 1
(13) Power module 2	(14) Serial label pull tab
(15) Fiber management Ethernet port
(16) Fiber management Ethernet port LED (LINK/ACT)
(17) Copper management Ethernet port LED (ACT)
(18) System status LED (SYS)	(19) Copper management Ethernet port LED (LINK)

The ESN serial number and MAC address of the S9850-32H switch can be found on the serial label pull tab.

The S9850-32H switch comes with power module slot PWR1 empty and power module slot PWR2 installed with a filler panel. You can install one or two power modules for the switch as needed. In Figure 82, two LSVM1AC650 power modules are installed in the power module slots.

The S9850-32H switch comes with the five fan tray slots empty. You must install five fan trays of the same model for the switch. In Figure 82, five LSWM1FANSA fan trays are installed in the fan tray slots.

Figure 83 S9850-32H left panel

(1) Fan tray handle	(2) Primary grounding point
(3) Auxiliary grounding point	(4) Power module handle

Technical specifications

Table 9 H3C S6850 switch series technical specifications

Item	S6850-56HF	S6850-2C
BOM code	· 0235A3JS · 0235A2PQ	0235A3K6
Product code	· LS-6850-56HF (0235A3JS) · LS-6850-56HF-H1 (0235A2PQ)	LS-6850-2C
Dimensions (H × W × D)	43.6 × 440 × 460 mm (1.72 × 17.32 × 18.11 in)	44.2 × 440 × 660 mm (1.74 × 17.32 × 25.98 in)
Weight	≤ 15 kg (33.07 lb)	≤ 16 kg (35.27 lb)
Console ports	· 1 × Mini USB console port · 1 × serial console port	· 1 × Mini USB console port · 1 × serial console port
Management Ethernet ports	· 1 × 10M/100M/1000MBASE-T copper port · 1 × SFP port	· 1 × 10M/100M/1000MBASE-T copper port · 1 × SFP port
USB ports	1	1
SFP ports	2	N/A
SFP28 ports	48	N/A
QSFP28 ports	8	2
Fan tray slots	5	5
Power module slots	2	2
Expansion slots	N/A	2
Minimum power consumption	· Single AC input: 167 W · Dual AC inputs: 179 W · Single DC input: 154 W · Dual DC inputs: 174 W	· Single AC input: 136 W · Dual AC inputs: 148 W · Single DC input: 132 W · Dual DC inputs: 146 W
Maximum power consumption	· Single AC input: 405 W · Dual AC inputs: 413 W · Single DC input: 400 W · Dual DC inputs: 408 W	· Single AC input: 408 W · Dual AC inputs: 421 W · Single DC input: 404 W · Dual DC inputs: 411 W
Chassis leakage current compliance	· UL60950-1 · EN60950-1 · IEC60950-1 · GB4943
Operating temperature	0°C to 45°C (32°F to 113°F)
Operating humidity	5% RH to 95% RH, noncondensing
Fire resistance compliance	· UL60950-1 · EN60950-1 · IEC60950-1 · GB4943

Table 10 H3C S9850 switch series technical specifications

Item	S9850-4C	S9850-32H
BOM code	0235A3JR	0235A3K5
Product code	LS-9850-4C	LS-9850-32H-A
Dimensions (H × W × D)	88.1 × 440 × 660 mm (3.47 × 17.32 × 25.98 in)	43.6 × 440 × 460 mm (1.72 × 17.32 × 18.11 in)
Weight	≤ 27 kg (59.52 lb)	≤ 15 kg (33.07 lb)
Console ports	· 1 × Mini USB console port · 1 × serial console port	· 1 × Mini USB console port · 1 × serial console port
Management Ethernet ports	· 1 × 10M/100M/1000MBASE-T copper port · 1 × SFP port	· 1 × 10M/100M/1000MBASE-T copper port · 1 × SFP port
USB ports	1	1
SFP ports	2	2
QSFP28 ports	N/A	32
Fan tray slots	2	5
Power module slots	4	2
Expansion slots	4	N/A
Minimum power consumption	· Dual AC inputs: 152 W · Triple AC inputs: 169 W · Quadruple AC inputs: 185 W · Dual DC inputs: 159 W · Triple DC inputs: 174 W · Quadruple DC inputs: 185 W	· Single AC input: 154 W · Dual AC inputs: 166 W · Single DC input: 154 W · Dual DC inputs: 163 W
Maximum power consumption	· Dual AC inputs: 665 W · Triple AC inputs: 671 W · Quadruple AC inputs: 688 W · Dual DC inputs: 663 W · Triple DC inputs: 665 W · Quadruple DC inputs: 666 W	· Single AC input: 376 W · Dual AC inputs: 385 W · Single DC input: 373 W · Dual DC inputs: 377 W
Chassis leakage current compliance	· UL60950-1 · EN60950-1 · IEC60950-1 · GB4943
Operating temperature	0°C to 45°C (32°F to 113°F)
Operating humidity	5% RH to 95% RH, noncondensing
Fire resistance compliance	· UL60950-1 · EN60950-1 · IEC60950-1 · GB4943

NOTE:

To install an SFP-XG-LH80-SM1550 transceiver module in the LSWM124XG2Q or LSWM124XG2QL expansion module installed in the switch, make sure the ambient temperature is in the range of 0°C (32°F) to 40°C (104°F).

Appendix B FRUs

The switch uses modular design. Table 11 describes the FRUs available for the switch.

Table 11 FRUs available for the switch

FRUs	BOM code	S6850-56HF	S6850-2C	S9850-4C	S9850-32H
Power modules
LSVM1AC650	0231A0QM	Yes	Yes	Yes	Yes
LSVM1DC650	0231A0QP	Yes	Yes	Yes	Yes
Fan trays
LSWM1FANSA	0231A4BB	Yes	Yes	No	Yes
LSWM1FANSAB	0231A4BC	Yes	Yes	No	Yes
LSWM1BFANSC	0231A2Y7	No	No	Yes	No
LSWM1BFANSCB	0231A2Y6	No	No	Yes	No
Expansion modules
LSWM18CQ	0231A4XH	No	Yes	Yes	No
LSWM18CQMSEC	0231A8FM	No	Yes	Yes	No
LSWM116Q	0231A4XJ	No	Yes	Yes	No
LSWM18QC	0231A2U4	No	Yes	Yes	No
LSWM124XG2Q	0231A2U5	No	Yes	Yes	No
LSWM124XGT2Q	0231A2U6	No	Yes	Yes	No
LSWM124XG2QFC	0231A2YE	No	Yes	Yes	No
LSWM124XG2QL	0231A2U7	No	Yes	Yes	No
LSWM124TG2H	0231A5S8	No	Yes	Yes	No

The S6850-56HF, S6850-2C, and S9850-32H switches can operate correctly with only one power module. You can install two power modules for 1+1 redundancy.

The S9850-4C switch can operate correctly with two power modules. You can install three power modules for 2+1 redundancy or four power modules for 2+2 redundancy.

To ensure heat dissipation, make sure all fan tray slots on the switch have fan trays installed and the fan trays are the same model.

Power modules

CAUTION:

When the switch has power modules in redundancy, you can replace a power module without powering off the switch. Make sure the power module to be replaced is powered off before you replace it.

Table 12 Power module specifications

Power module model

Specifications

Remarks

LSVM1AC650

· Rated input voltage: 100 VAC to 240 VAC @ 50 Hz or 60 Hz

· Max input voltage: 90 VAC to 264 VAC @ 47 Hz to 63 Hz

· Max output power: 650 W

· Melting current of power module fuse: 10 A, 250 V

For more information about the power modules, see H3C LSVM1AC650 & LSVM1DC650 Power Modules User Manual.

LSVM1DC650

· Rated input voltage: –40 VDC to –60 VDC

· Max input voltage: –40 VDC to –72 VDC

· Max output power: 650 W

· Melting current of power module fuse: 30 A, 250 V

Fan trays

NOTE:

Both the LSWM1FANSA, LSWM1FANSAB, LSWM1BFANSC and LSWM1BFANSCB fan trays are available in black and silver models. Silver models support electronic labels and black models do not.

Table 13 Fan tray specifications

Fan tray model	Item	Specifications
· LSWM1FANSA (from the power module side to the port side) · LSWM1FANSAB (from the port side to the power module side)	Dimensions	40.6 × 42.5 × 118.7 mm (1.60 × 1.67 × 4.67 in)
	Fan speed	21000 R.P.M
	Max airflow	35 CFM
	Input voltage	12 V
	Maximum power consumption	30 W
	Documentation reference	H3C LSWM1FANSA & LSWM1FANSAB Fan Tray User Guide
· LSWM1BFANSC (from the power module side to the port side) · LSWM1BFANSCB (from the port side to the power module side)	Dimensions	80 × 80 × 76 mm (3.15 × 3.15 × 2.99 in)
	Fan speed	20000 R.P.M
	Max airflow	120 CFM
	Input voltage	12 V
	Maximum power consumption	57 W
	Documentation reference	H3C LSWM1BFANSC & LSWM1BFANSCB Fan trays User Guide

Expansion modules

The S6850-2C switch provides two expansion slots. The S9850-4C switch provides four expansion slots. Select expansion modules for the switch as required.

Table 14 Interface modules available for the S6850-2C and S9850-4C switches

Interface module model	Description	Interface number and type	Transceiver modules available for the ports
LSWM18CQ	8-port QSFP28 interface module	8 × QSFP28 ports	· For the transceiver modules and cables available for the QSFP28 ports, see "QSFP28 port." · For the transceiver modules and cables available for the QSFP+ ports, see "QSFP+ port." · For the transceiver modules and cables available for the SFP28 ports, see "SFP28 port." · For the transceiver modules and cables available for the SFP+ ports, see "SFP+ port."
LSWM18CQMSEC	8-port QSFP28 interface module with MACSec	8 × QSFP28 ports
LSWM116Q	16-port QSFP+ interface module	16 × QSFP+ ports
LSWM18QC	8-port QSFP+ interface module	8 × QSFP+ ports
LSWM124XG2Q	24-port SFP+ and 2-port QSFP+ interface module with MACSec	· 24 × SFP+ ports · 2 × QSFP+ ports
LSWM124XGT2Q	24-port 10GBASE-T and 2-port QSFP+ interface module with MACSec	· 24 × 10GBASE-T ports · 2 × QSFP+ ports
LSWM124XG2QFC	24-port SFP+ and 2-port QSFP+ interface module with FC	· 24 × SFP+ ports · 2 × QSFP+ ports
LSWM124XG2QL	24-port SFP+ and 2-port QSFP+ interface module	· 24 × SFP+ ports · 2 × QSFP+ ports
LSWM124TG2H	24-port SFP28 and 2-port QSFP28 interface module	· 24 × SFP28 ports · 2 × QSFP28 ports

Appendix C Ports and LEDs

As a best practice, use H3C transceiver modules and cables for the switch. H3C transceiver modules and cables are subject to change over time. For the most up-to-date list of H3C transceiver modules and cables, contact H3C Support or marketing staff. For information about the specifications and views of H3C transceiver modules and cables, see H3C Transceiver Modules User Guide.

Ports

Console port

The switch has two console ports: one serial console port and one mini USB console port.

Table 15 Console port specifications

Item	Console port	Mini USB console port
Connector type	RJ-45	USB mini-Type B
Compliant standard	EIA/TIA-232	USB 2.0
Transmission baud rate	9600 bps (default) to 115200 bps
Services	· Provides connection to an ASCII terminal. · Provides connection to the serial port of a local PC running terminal emulation program.	· Provides connection to an ASCII terminal. · Provides connection to the USB port of a local PC running terminal emulation program.

Management Ethernet port

The switch has two management Ethernet ports: one copper management port and one SFP management port. You can connect the ports to a local PC for software loading and debugging or to a remote management station for remote management.

Table 16 Management Ethernet port specifications

Item	Specification
Connector type	· 10/100/1000BASE-T management port: RJ-45. · SFP management port: LC.
Port transmission rate	· 10/100/1000BASE-T management port: ¡ 10/100 Mbps, half/full duplex, MDI/MDI-X auto-sensing. ¡ 1000 Mbps, full duplex, MDI/MDI-X auto-sensing. · SFP management port: 1000/100 Mbps, full duplex.
Transmission medium and max transmission distance	· 10/100/1000BASE-T management port: 100 m (328.08 ft) over category-5 UTP cable. · SFP management port: See 100-Megabit transceiver modules in Table 17 and Gigabit transceiver modules in Table 18.
Functions and services	Software upgrade and network management.

FE SFP modules

Table 17 FE SFP transceiver modules

FE SFP transceiver module	Central wavelength (nm)	Connector	Fiber type and diameter (µm)	Max transmission distance
SFP-FE-SX-MM1310-A	1310	LC	Multi-mode, 50/125	2 km (1.24 miles)
SFP-FE-SX-MM1310-A	1310	LC	Multi-mode, 62.5/125	2 km (1.24 miles)
SFP-FE-LX-SM1310-A	1310	LC	Single-mode, 9/125	15 km (9.32 miles)
SFP-FE-LH40-SM1310	1310	LC	Single-mode, 9/125	40 km (24.86 miles)

USB port

The switch has one OHCI-compliant USB 2.0 port that can upload and download data at a rate up to 480 Mbps. You can use this USB port to access the file system on the Flash of the switch, for example, to upload or download application and configuration files.

The USB port supplies power as per USB 2.0 specifications. Use only USB 2.0-compliant USB devices for the USB port. The port might not identity USB devices that are not compliant with USB 2.0.

NOTE:

USB devices from different vendors vary in compatibilities and drivers. H3C does not guarantee correct operation of USB devices from other vendors on the switch. If a USB device fails to operate on the switch, replace it with one from another vendor.

SFP port

The S6850-56HF, S6850-32H, and S9850-4C switches each provide two SFP ports on the rear panel. You can install FE SFP transceiver modules in Table 17 and GE SFP transceiver modules in Table 18 in the SFP ports as needed.

Table 18 GE SFP transceiver modules available for the SFP ports

GE SFP transceiver module	Central wavelength (nm)	Connector	Cable/Fiber type and diameter (µm)	Modal bandwidth (MHz × km)	Max transmission distance
SFP-GE-T	N/A	RJ-45	Twisted pair cable	N/A	100 m (328.08 ft)
SFP-GE-SX-MM850-A	850	LC	Multi-mode, 50/125	500	550 m (1804.46 ft)
			Multi-mode, 50/125	400	500 m (1640.42 ft)
			Multi-mode, 62.5/125	200	275 m (902.23 ft)
			Multi-mode, 62.5/125	160	200 m (656.17 ft)
SFP-GE-LX-SM1310-A	1310	LC	Single-mode, 9/125	N/A	10 km (6.21 miles)
			Multi-mode, 50/125	500 or 400	550 m (1804.46 ft)
			Multi-mode, 62.5/125	500	550 m (1804.46 ft)
SFP-GE-LH40-SM1310	1310	LC	Single-mode, 9/125	N/A	40 km (24.86 miles)
SFP-GE-LH40-SM1550	1550	LC	Single-mode, 9/125	N/A	40 km (24.86 miles)
SFP-GE-LH80-SM1550	1550	LC	Single-mode, 9/125	N/A	80 km (49.71 miles)

QSFP28 port

Table 19 describes the switches and interface modules that provide QSFP28 ports.

Table 19 Switches and interface modules that provide QSFP28 ports

Switches and interface modules that provide QSFP28 ports	Number of QSFP28 ports
S6850-56HF switch	8
S6850-2C switch	2
S9850-32H switch	32
LSWM18CQ interface module	8
LSWM124TG2H interface module	2
LSWM18CQMSEC interface module	8

You can install the following transceiver modules and cables in the QSFP28 ports:

· QSFP28 transceiver modules in Table 20.

· QSFP28 copper cables in Table 21.

· QSFP28 fiber cables in Table 22.

· QSFP28 to SFP28 copper cables in Table 23.

· QSFP+ transceiver modules in Table 24.

· QSFP+ copper cables in Table 25.

· QSFP+ fiber cables in Table 26.

· QSFP+ to SFP+ copper cables in Table 27.

With a QSFP+ to SFP+ adapter installed in an QSFP28 port, the QSFP28 port supports SFP+ transceiver modules listed in Table 31. Before using a QSFP+ to SFP+ adapter, execute the using tengige command on the QSFP28 port where the adapter is to be installed.

IMPORTANT:

The QSFP+ to SFP+ adapter is available only in R6555 and later versions.

NOTE:

· You can use a QSFP-40G-SR4-MM850 or QSFP-40G-CSR4-MM850 transceiver module to connect a QSFP+ port to four SFP+ ports. The QSFP+ transceiver module and SFP+ transceiver modules to be connected must be the same in specifications, including central wavelength and fiber type.

· Interface numbered 31 on the S6850-56HF and S9850-32H switches cannot be split into four interfaces.

· When the LSWM18CQ or LSWM18CQMSEC interface module is installed in slot 2 on the S9850-4C switch, interface numbered 7 on the interface module cannot be split into four interfaces.

· When the LSWM124TG2H interface module is installed in slot 2 on the S9850-4C switch, the interface numbered 25 on the interface module cannot be split into four interfaces.

Table 20 QSFP28 transceiver modules available for the QSFP28 ports

QSFP28 transceiver module	Central wavelength (nm)	Connector	Fiber type and diameter (µm)	Modal bandwidth (MHz*km)	Maximum transmission distance
QSFP-100G-SR4-MM850	850	MPO (PC polished, 12-fiber)	Multi-mode, 50/125	2000	70 m (229.66 ft)
QSFP-100G-SR4-MM850	850	MPO (PC polished, 12-fiber)	Multi-mode, 50/125	4700	100 m (328.08 ft)
QSFP-100G-PSM4-SM1310	1295 to 1325	MPO (APC polished, 12-fiber)	Single-mode, 9/125	N/A	500 m (1640.42 ft)
QSFP-100G-LR4-WDM1300	Four lanes: · 1295 · 1300 · 1304 · 1309	LC	Single-mode, 9/125	N/A	10 km (6.21 miles)
QSFP-100G-LR4L-WDM1300	Four lanes: · 1264.5 to 1277.5 · 1284.5 to 1297.5 · 1304.5 to 1317.5 · 1324.5 to 1337.5	LC	Single-mode, 9/125	N/A	2 km (1.24 miles)
QSFP-100G-SWDM4-MM850	Four lanes: · 850 · 880 · 910 · 940	LC	Multi-mode, 50/125	2000	75 m (246.06 ft)
QSFP-100G-SWDM4-MM850	Four lanes: · 850 · 880 · 910 · 940	LC	Multi-mode, 50/125	4700	100 m (328.08 ft)
QSFP-100G-ER4L-WDM1300	Four lanes: · 1294.53 to 1296.59 · 1299.02 to 1301.09 · 1303.54 to 1305.63 · 1308.09 to 1310.19	LC	Single-mode, 9/125	N/A	40 km (24.86 miles)

IMPORTANT:

· QSFP-100G-SWDM4-MM850 is available only in E6553 and later versions.

· QSFP-100G-ER4L-WDM1300 is available only in R6607 and later versions.

Table 21 QSFP28 copper cables available for the QSFP28 ports

QSFP28 copper cable	Cable length
QSFP-100G-D-CAB-1M	1 m (3.28 ft)
QSFP-100G-D-CAB-3M	3 m (9.84 ft)
QSFP-100G-D-CAB-5M	5 m (16.40 ft)

Table 22 QSFP28 fiber cables available for the QSFP28 ports

QSFP28 fiber cable	Cable length
QSFP-100G-D-AOC-7M	7 m (22.97 ft)
QSFP-100G-D-AOC-10M	10 m (32.81 ft)
QSFP-100G-D-AOC-20M	20 m (65.62 ft)

Table 23 QSFP28 to SFP28 copper cables available for the QSFP28 ports

QSFP28 to SFP28 copper cable	Cable length
QSFP-100G-4SFP-25G-CAB-1M	1 m (3.28 ft)
QSFP-100G-4SFP-25G-CAB-3M	3 m (9.84 ft)
QSFP-100G-4SFP-25G-CAB-5M	5 m (16.40 ft)

Table 24 QSFP+ transceiver modules available for the QSFP28 ports

QSFP+ transceiver module	Central wavelength (nm)	Connector	Fiber type and diameter (µm)	Modal bandwidth (MHz × km)	Max transmission distance
QSFP-40G-SR4-MM850	850	MPO (PC-polished, 12-core)	Multi-mode, 50/125	2000	100 m (328.08 ft)
QSFP-40G-SR4-MM850	850	MPO (PC-polished, 12-core)	Multi-mode, 50/125	4700	150 m (492.12 ft)
QSFP-40G-CSR4-MM850	850	MPO (PC-polished, 12-core)	Multi-mode, 50/125	2000	300 m (984.25 ft)
QSFP-40G-CSR4-MM850	850	MPO (PC-polished, 12-core)	Multi-mode, 50/125	4700	400 m (1312.33 ft)
QSFP-40G-LR4-PSM1310	1310	MPO (APC-polished, 12-core)	Single-mode, 9/125	N/A	10 km (6.21 miles)
QSFP-40G-BIDI-SR-MM850	850	LC	Multi-mode, 50/125	2000	100 m (328.08 ft)
QSFP-40G-BIDI-SR-MM850	850	LC	Multi-mode, 50/125	4700	150 m (492.12 ft)
QSFP-40G-LR4-WDM1300	Four lanes: · 1271 · 1291 · 1311 · 1331	LC	Single-mode, 9/125	N/A	10 km (6.21 miles)
QSFP-40G-LR4L-WDM1300	Four lanes: · 1271 · 1291 · 1311 · 1331	LC	Single-mode, 9/125	N/A	2 km (1.24 miles)

Table 25 QSFP+ copper cables available for the QSFP28 ports

QSFP+ copper cable	Max transmission distance
LSWM1QSTK0	1 m (3.28 ft)
LSWM1QSTK1	3 m (9.84 ft)
LSWM1QSTK2	5 m (16.40 ft)

Table 26 QSFP+ fiber cables available for the QSFP28 ports

QSFP+ fiber cable	Cable length
QSFP-40G-D-AOC-7M	7 m (22.97 ft)
QSFP-40G-D-AOC-10M	10 m (32.81 ft)
QSFP-40G-D-AOC-20M	20 m (65.62 ft)

Table 27 QSFP+ to SFP+ copper cables available for the QSFP28 ports

QSFP+ to SFP+ copper cable	Max transmission distance
LSWM1QSTK3	1 m (3.28 ft)
LSWM1QSTK4	3 m (9.84 ft)
LSWM1QSTK5	5 m (16.40 ft)

NOTE:

MPO connectors include physical contact (PC) connectors with a flat-polished face and angle-polished contact (APC) connectors with an angle-polished face (8°).

QSFP+ port

The LSWM116Q and LSWM18QC interface modules provide 16 and 8 QSFP+ ports, respectively. The LSWM124XG2Q, LSWM124XG2QFC, LSWM124XG2QL, and LSWM124XGT2Q interface modules each provide two QSFP+ ports. You can install the following transceiver modules and cables in the QSFP+ ports:

· QSFP+ transceiver modules in Table 24.

· QSFP+ copper cables in Table 25.

· QSFP+ fiber cables in Table 26.

· QSFP+ to SFP+ copper cables in Table 27.

With a QSFP+ to SFP+ adapter installed in a QSFP+ port, the QSFP+ port supports SFP+ transceiver modules listed in Table 31. Before using an QSFP+ to SFP+ adapter, execute the using tengige command on the QSFP+ port where the adapter is to be installed.

IMPORTANT:

The QSFP+ to SFP+ adapter is available only in R6555 and later versions.

NOTE:

· QSFP+ ports on the LSWM116Q interface module cannot be split into four interfaces.

· When you install the LSWM18QC interface module in slot 2 on the S9850-4C switch, interface numbered 8 on the interface module cannot be split into four interfaces.

· When you install the LSWM124XG2Q, LSWM124XG2QFC, LSWM124XG2QL, or LSWM124XGT2Q interface module in slot 2 on the S9850-4C switch, interface numbered 25 cannot be split into four interfaces.

SFP28 port

The S6850-56HF switch provides 48 SFP28 ports. The LSWM124TG2H provides 24 SFP28 ports. The SFP28 ports support the following transceiver modules and cables:

· SFP28 transceiver modules in Table 28.

· SFP28 copper cables in Table 29.

· SFP28 fiber cables in Table 30.

· 10-GE SFP+ transceiver modules in Table 31.

· 10-GE SFP+ copper cables in Table 32.

· 10-GE SFP+ fiber cables in Table 33.

· GE SFP transceiver modules in Table 18.

IMPORTANT:

· To use an SFP28 or SFP+ copper cable to connect an SFP28 port on an S6850-56HF switch to a peer port that does not support speed and duplex autonegotiation, you must configure the same duplex mode and speed for the two ports. The speed must be the same as that of the transceiver module installed in the port.

· The SFP28 ports on an LSWM124TG2H interface module do not support speed and duplex autonegotiation. To use an SFP+ transceiver module, SFP+ cable, or SFP transceiver module to connect an SFP28 port on an LSWM124TG2H interface module to a peer port, you must configure the same duplex mode and speed for the two ports. The speed must be the same as that of the transceiver module installed in the port.

· To use an SFP module to connect an SFP28 port to a peer port, you must disable autonegotiation on the peer port.

Table 28 SFP28 transceiver modules available for the SFP28 ports

SFP28 transceiver module

Central wavelength (nm)

Connector

Fiber type and diameter (µm)

Modal bandwidth (MHz*km)

Maximum transmission distance

SFP-25G-SR-MM850

850

Multi-mode, 50/125

2000

· FEC negotiation disabled: 30 m (98.43 ft)

· FEC negotiation enabled: 70 (229.66 ft)

4700

· FEC negotiation disabled: 40 m (131.23 ft)

· FEC negotiation enabled: 100 m (328.08 ft)

NOTE:

For more information about FEC negotiation, see Ethernet interfaces in H3C S6850 & S9850 Switch Series Layer 2 –LAN Switching Configuration Guide.

Table 29 25G SFP28 copper cables available for the SFP28 ports

25G SFP28 copper cable	Max transmission distance
SFP-25G-D-CAB-1M	1 m (3.28 ft)
SFP-25G-D-CAB-3M	3 m (9.84 ft)
SFP-25G-D-CAB-5M	5 m (16.40 ft)

Table 30 25G SFP28 fiber cables available for the SFP28 ports

25G SFP28 fiber cable	Max transmission distance
SFP-25G-D-AOC-3M	3 m (9.84 ft)
SFP-25G-D-AOC-5M	5 m (16.40 ft)
SFP-25G-D-AOC-7M	7 m (22.97 ft)
SFP-25G-D-AOC-10M	10 m (32.81 ft)
SFP-25G-D-AOC-20M	20 m (65.62 ft)

Table 31 10-GE SFP+ transceiver modules available for the SFP28 ports

10-GE SFP+ transceiver module	Central wavelength (nm)	Connector	Fiber type and diameter (µm)	Modal bandwidth (MHz × km)	Max transmission distance
SFP-XG-SX-MM850-A	850	LC	Multi-mode, 50/125	2000	300 m (984.25 ft)
				500	82 m (269.03 ft)
				400	66 m (216.54 ft)
			Multi-mode, 62.5/125	200	33 m (108.27 ft)
			Multi-mode, 62.5/125	160	26 m (85.30 ft)
SFP-XG-LX-SM1310	1310	LC	Single-mode, 9/125	N/A	10 km (6.21 miles)
SFP-XG-LH80-SM1550	1550	LC	Single-mode, 9/125	N/A	80 km (49.71 miles)
SFP-XG-LX-SM1270-BIDI	· TX: 1270 · RX: 1330	LC	Single-mode, 9/125	N/A	10 km (6.21 miles)
SFP-XG-LX-SM1330-BIDI	· TX: 1330 · RX: 1270	LC	Single-mode, 9/125	N/A	10 km (6.21 miles)
SFP-XG-LH40-SM1270-BIDI	· TX: 1270 · RX: 1330	LC	Single-mode, 9/125	N/A	40 km (24.86 miles)
SFP-XG-LH40-SM1330-BIDI	· TX: 1330 · RX: 1270	LC	Single-mode, 9/125	N/A	40 km (24.86 miles)
SFP-XG-LH80-SM1490-BIDI	· TX: 1490 · RX: 1550	LC	Single-mode, 9/125	N/A	80 km (49.71 miles)
SFP-XG-LH80-SM1550-BIDI	· TX: 1550 · RX: 1490	LC	Single-mode, 9/125	N/A	80 km (49.71 miles)

Table 32 10-GE SFP+ copper cables available for the SFP28 ports

10-GE SFP+ copper cable	Max transmission distance
LSWM1STK	0.65 m (2.13 ft)
LSWM2STK	1.2 m (3.94 ft)
LSWM3STK	3 m (9.84 ft)
LSTM1STK	5 m (16.40 ft)

Table 33 10-GE SFP+ fiber cables available for the SFP28 ports

10-GE SFP+ fiber cable	Max transmission distance
SFP-XG-D-AOC-7M	7 m (22.97 ft)
SFP-XG-D-AOC-10M	10 m (32.81 ft)
SFP-XG-D-AOC-20M	20 m (65.62 ft)

IMPORTANT:

· Only the LSWM124XG2Q and LSWM124XG2QL expansion modules support the SFP-XG-LH80-SM1550 transceiver module.

· You must use two BIDI transceiver modules in pairs. For example, if one end uses the SFP-XG-LX-SM1270-BIDI transceiver module, the peer end must use the SFP-XG-LX-SM1330-BIDI transceiver module.

· The SFP-XG-LX-SM1270-BIDI, SFP-XG-LX-SM1330-BIDI, SFP-XG-LH40-SM1270-BIDI, SFP-XG-LH40-SM1330-BIDI, SFP-XG-LH80-SM1490-BIDI, and SFP-XG-LH80-SM1550-BIDI transceiver modules are available only in R6607 and later versions.

SFP+ port

The LSWM124XG2Q, LSWM124XG2QFC, and LSWM124XG2QL interface modules each provide 24 SFP+ ports. The SFP+ ports support the following transceiver modules and cables:

· 10-GE SFP+ transceiver modules in Table 31.

· 10-GE SFP+ copper cables in Table 32.

· 10-GE SFP+ fiber cables in Table 33.

· GE SFP transceiver modules in Table 18.

IMPORTANT:

· SFP+ ports on an LSWM124XG2QL interface module do not support rate and duplex autonegotiation. To use a GE SFP transceiver module to connect an SFP+ port on an LSWM124XG2QL interface module to a peer port, you must configure the speed 1000 and duplex full commands on both ports.

· To use a GE SFP module to connect an SFP+ port to a peer port, you must disable autonegotiation on the peer port.

LEDs

System status LED

The system status LED shows the operating status of the switch.

Table 34 System status LED description

LED mark	Status	Description
SYS	Steady green	The switch is operating correctly.
	Flashing green	The switch is performing power-on self test (POST).
	Steady red	The system has failed to pass POST or has problems such as fan failure.
	Flashing blue (3 Hz)	Helps you to locate the switch. To locate the switch in the rack, execute the locator blink blink-time command. The LED then flashes blue at 3 Hz.
	Off	The switch is powered off or has failed to start up.

QSFP28 port LED

Table 35 QSFP28 port LED description

LED status	Description
Steady green	A transceiver module or cable has been correctly installed. The port has a link and is operating at 100 Gbps.
Flashing green	The port is sending or receiving data at 100 Gbps.
Steady yellow	A transceiver module or cable has been correctly installed. The port has a link and is operating at 10 Gbps, 25 Gbps, or 40 Gbps.
Flashing yellow (3 Hz)	The port is sending or receiving data at 10 Gbps, 25 Gbps, or 40 Gbps.
Off	No transceiver module or cable has been installed or no link is present on the port.

QSFP+ port LED

Each QSFP+ port has a status LED to show its operating status and activities.

Table 36 QSFP+ port LED description

LED status	Description
Steady green	A transceiver module or cable has been correctly installed. The port has a link and is operating at 40 Gbps.
Flashing green	The port is sending or receiving data at 40 Gbps.
Steady yellow	A transceiver module or cable has been correctly installed. The port has a link and is operating at 10 Gbps.
Flashing yellow	The port is sending or receiving data at 10 Gbps.
Off	No transceiver module or cable has been installed or no link is present on the port.

SFP28 port LED

Table 37 SFP28 port LED description

LED status	Description
Steady green	A transceiver module or cable has been correctly installed. The port has a link and is operating at 25 Gbps.
Flashing green	The port is sending or receiving data at 25 Gbps.
Steady yellow	A transceiver module or cable has been correctly installed. The port has a link and is operating at 1/10 Gbps.
Flashing yellow (3 Hz)	The port is sending or receiving data at 1/10 Gbps.
Off	No transceiver module or cable has been installed or no link is present on the port.

SFP+ port LED

Each SFP+ port has a status LED to show port operating status and activities.

Table 38 SFP+ port LED description

LED status	Description
Steady green	A transceiver module or cable has been correctly installed. The port has a link and is operating at 10 Gbps.
Flashing green	The port is sending or receiving data at 10 Gbps.
Steady yellow	A transceiver module or cable has been correctly installed. The port has a link and is operating at 1 Gbps.
Flashing yellow (3 Hz)	The port is sending or receiving data at 1 Gbps.
Off	No transceiver module or cable has been installed or no link is present on the port.

SFP port LED

Table 39 SFP port LED description

LED status	Description
Steady green	A transceiver module or cable has been correctly installed. The port has a link and is operating at 1 Gbps.
Flashing green	The port is sending or receiving data at 1 Gbps.
Steady yellow	A transceiver module or cable has been correctly installed. The port has a link and is operating at 100 Mbps.
Flashing yellow (3 Hz)	The port is sending or receiving data at 100 Mbps.
Off	No transceiver module or cable has been installed or no link is present on the port.

Management Ethernet port LEDs

The switch provides two status LEDs LINK and ACT for the copper management Ethernet port and one double-color LED LINK/ACT for the fiber management Ethernet port.

Table 40 Copper management Ethernet port LED description

LED mark	Status	Description
LINK	Off	No link is present on the port
LINK	Steady green	The port is operating at 10/100/1000 Mbps.
ACT	Off	The port is not receiving or sending data.
ACT	Flashing yellow	The port is sending or receiving data.

Table 41 Fiber management Ethernet port LED description

LED mark	Status	Description
LINK/ACT	Off	No link is present on the port.
	Steady green	The port is operating at 1000 Mbps.
	Flashing green	The port is receiving or sending data at 1000 Mbps.
	Steady yellow	The port is operating at 100 Mbps.
	Flashing yellow	The port is receiving or sending data at 100 Mbps.

Fan tray alarm LEDs

The LSWM1FANSA, LSWM1FANSAB, LSWM1BFANSC, and LSWM1BFANSCB fan trays each provide an alarm LED.

Table 42 Description for the alarm LEDs on the fan trays

Status	Description
On	The fan tray is faulty.
Off	The fan tray is operating correctly or no power is being input.

Appendix D Cooling system

CAUTION:

The chassis and power modules use separate air aisles. Make sure the two aisles are not blocked when the switch is operating.

To dissipate heat timely and ensure system stability, the switch uses the front-rear air aisle cooling system. Consider the site ventilation design when you plan the installation site for the switch.

Table 43 Cooling system for the switch

Switch model	Available fan trays	Airflow direction
· S6850-56HF · S6850-2C · S9850-32H	LSWM1FANSA	From the power module side to the port side
· S6850-56HF · S6850-2C · S9850-32H	LSWM1FANSAB	From the port side to the power module side
S9850-4C	LSWM1BFANSC	From the power module side to the port side
S9850-4C	LSWM1BFANSCB	From the port side to the power module side

Figure 84 Airflow from the power module side to the port side through the S6850-56HF chassis (with LSWM1FANSA fan trays)

Figure 85 Airflow from the port side to the power module side through the S6850-56HF chassis (with LSWM1FANSAB fan trays)

Figure 86 Airflow from the power module side to the port side through the S9850-4C chassis (with LSWM1BFANSC fan trays)

Figure 87 Airflow from the port side to the power module side through the S9850-4C chassis (with LSWM1BFANSCB fan trays)

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H3C S6850&S9850 Switch Series Installation Guide-6W104

Preparing for installation

Safety recommendations

Attaching the mounting brackets and chassis rails to the chassis

Grounding the switch

Installing/removing fan trays

Installing/removing power modules

Connecting the power cords

Connecting an AC power cord

Connecting a DC power cord

Installing/removing expansion modules

Setting up the configuration environment

Connecting the console cable

Powering on the switch

IRF fabric setup flowchart

Planning IRF fabric setup

Connecting the IRF member switches in one rack

Connecting the IRF member switches in a ToR solution

Symptom

Solution

Symptom

Solution

Fan trays

Console port

Management Ethernet port

USB port

Management Ethernet port LEDs