H3C S7500 Series Ethernet Switches are modular, large-capacity Layer 2/3 Ethernet switches that support wire-speed forwarding. The S7500 series include S7502, S7503, S7506, and S7506R.

l The S7503, S7506, and S7506R are designed to operate at the convergence layer of IP metropolitan area networks (MANs) and at the core layer of small to medium-sized enterprise networks and campus area networks.

l The S7502 is designed to operate at the core layer of small to medium-sized enterprise networks and at the convergence layer and access layer of IP MANs.

The S7502 is a high-capacity, cost-effective Layer 3 Ethernet switch. It provides high-density GE/FE ports, as well as modularized components that enable you to configure flexibly according to your specific needs.

Figure 1-1 S7502 in a MAN

The S7502 supports 1+1 AC power redundancy backup, and provides one switching and routing processing unit (SRPU) slot and one line processing unit (LPU) slot. Both the SRPU and the LPU can provide high-density service ports.

1.1.2 Switching Engine

Switching engine (also known as SRPU) is the core of the S7502. Currently, switching engines include the following models:

l LS81P12TE: provides four 10/100/1000Base-T ports and twelve 1000Base-X (SFP) ports.

l LS81T12PE: provides twelve 10/100/1000Base-T ports and four 1000Base-X (SFP) ports.

l LS81T16P: provides sixteen 10/100/1000Base-T ports and eight 1000Base-X (SFP) ports, and supports XG high-speed bus.

l LS81T32P: provides thirty-two 10/100/1000Base-T ports and sixteen 1000Base-X (SFP) ports, and supports XG high-speed bus.

l LS81GT48B: provides forty-eight 10/100/1000Base-T ports, and supports XG high-speed bus.

l LS81GP48: provides forty-eight 1000Base-X (SFP) ports, and supports XG high-speed bus.

l LS81TGX2: provides two 10GBase-XFP ports, and supports XG high-speed bus.

l LS81TGX4: provides four 10GBase-XFP ports and supports XG high-speed bus.

& Note:

You can insert an SRPU into the second slot (slot 1) of the S7502 to serve as an LPU.

Generally an SRPU can provide these functions:

l L2/L3 data forwarding between LPUs

l Route calculation

l LPU monitoring

l Processing of the monitoring signals on the power system and fans

1.1.3 SRPU Specifications

The following table lists the SRPU specifications.

Table 1-1 SRPU specifications

Item	Switching capacity	Packet forwarding rate	Number of VLANs	MAC address table	Routing table
LS81T12PE	48 Gbps	36 Mpps	4 K	16 K	64 K
LS81P12TE	48 Gbps	36 Mpps	4 K	16 K	64 K
LS81T16P	144 Gbps	108 Mpps	4 K	16 K	64 K
LS81T32P	192 Gbps	144 Mpps	4 K	16 K	64 K
LS81GT48B	192 Gbps	144 Mpps	4 K	16 K	64 K
LS81GP48	192 Gbps	144 Mpps	4 K	16 K	64 K
LS81TGX2	144 Gbps	108 Mpps	4 K	16 K	64 K
LS81TGX4	192 Gbps	144 Mpps	4 K	16 K	64 K

1.2 LS81P12TE

Figure 1-2 Appearance of an LS81P12TE

1.2.1 Specifications

Table 1-2 LS81P12TE specifications

Item	LS81P12TE
CPU	MPC8245 300 MHz
Boot ROM	512 KB
Flash memory	32 MB
SDRAM	256 MB
Dimensions (H ´ W x D)	40.1 × 376.7 × 354.5 mm (1.6 × 14.8 × 14 in.)
Port	l 4 × 10/100/1000Base-T Ethernet ports l 12 ´ 1000Base-X (SFP) Ethernet ports
Max power consumption	40 W
Port rate	l 1000 Mbps full duplex (optical port) l 10 Mbps half/full duplex (electrical port) l 100 Mbps half/full duplex (electrical port) l 1000 Mbps full duplex (electrical port)
SFP module	Refer to Table 1-4
Ethernet port cable and max transmission distance	100 m (328 ft) over category-5 twisted pair cable
Supported standard	l IEEE 802.3 l IEEE 802.3u l IEEE 802.3z l IEEE 802.3ab l IEEE 802.1p l IEEE 802.1Q l IEEE 802.1D l IEEE802.1X l IEEE802.1s l IEEE802.1w l IEEE 802.3x l IEEE 802.3ad

& Note:

In this manual, card dimensions refer to those of a card with ejector levers.

1.2.2 Panel and LEDs

LS81P12TE has four 10/100/1000Base-T ports and twelve 1000Base-X (SFP) ports; each has a status LED with it. Figure 1-3 illustrates the panel of an LS81P12TE.

Figure 1-3 LS81P12TE panel

(1) Interface number	(2) Silkscreen
(3) Nut	(4) LPU edge (Green)
(5) Ejector lever	(6) Interface status indicator
(7) SPF port (Gigabit)	(8) Ethernet port (Gigabit)

Figure 1-4 LS81P12TE panel

The status LEDs on an LS81P12TE are described in the following table.

Table 1-3 Description of LEDs on the panel of an LS81P12TE

LED	Status
LINK/ACT	OFF	The link is down or no link is presented.
	ON	The link is active.
	Blinking	Data is being transmitted or received on the port.

1.2.3 Port Cable

I. Optical port cables for 12-port 1000Base-X (SFP)

Table 1-4 Description of 1000Base-X (SFP) port cables

SFP module	Central wavelength	Connector	Matching cable	Maximum transmission distance
SFP-GE-SX-MM850-A	850 nm	LC	50 µm/125 µm multimode optical fiber cable	550 m (1804 ft)
SFP-GE-SX-MM850-A	850 nm	LC	62.5 µm/125 µm multimode optical fiber cable	275 m (902 ft)
SFP-GE-LX-SM1310-A	1310 nm	LC	9 µm/125 µm single mode optical fiber cable	10 km (6 mi)
SFP-GE-LH40-SM1310	1310 nm	LC	9 µm/125 µm single mode optical fiber cable	40 km (about 25 mi)
SFP-GE-LH40-SM1550	1550 nm	LC	9 µm/125 µm single mode optical fiber cable	40 km (about 25 mi)
SFP-GE-LH70-SM1550				70 km (43 mi)
SFP-GE-LH100-SM1550				100 km (62 mi)
SFP-GE-LH70-SM1470-CW	1470 nm	LC	9 µm/125 µm single mode optical fiber cable	70 km (43 mi)
SFP-GE-LH70-SM1490-CW	1490 nm	LC	9 µm/125 µm single mode optical fiber cable	70 km (43 mi)
SFP-GE-LH70-SM1510-CW	1510 nm	LC	9 µm/125 µm single mode optical fiber cable	70 km (43 mi)
SFP-GE-LH70-SM1530-CW
1530 nm	LC	9 µm/125 µm single mode optical fiber cable	70 km (43 mi)
SFP-GE-LH70-SM1550-CW	1550 nm	LC	9 µm/125 µm single mode optical fiber cable	70 km (43 mi)
SFP-GE-LH70-SM1570-CW	1570 nm	LC	9 µm/125 µm single mode optical fiber cable	70 km (43 mi)
SFP-GE-LH70-SM1590-CW	1590 nm	LC	9 µm/125 µm single mode optical fiber cable	70 km (43 mi)
SFP-GE-LH70-SM1610-CW	1610 nm	LC	9 µm/125 µm single mode optical fiber cable	70 km (43 mi)
SFP-GE-T	—	RJ45	—	100 m (328 ft)

II. Ethernet port cable for 4-port 10/100/1000Base-T

The Ethernet port cable is category-5 twisted pair cable, ended with RJ45 connectors, whose maximum transmission distance is 100 m.

1.3 LS81T12PE

Figure 1-5 Appearance of LS81T12PE

1.3.1 Specifications

Table 1-5 LS81T12PE specifications

Item	LS81P12TE
CPU	MPC8245 300 MHz
Boot ROM	512 KB
Flash memory	32 MB
SDRAM	256 MB
Dimensions (H ´ W x D)	40.1 × 376.7 × 354.5 mm (1.6 × 14.8 × 14 in.)
Port	l 12 ´ 10/100/1000Base-T Ethernet ports l Four 1000Base-X (SFP) Ethernet ports
Max power consumption	45 W
Connector	RJ-45, LC
Number of ports	16
Port rate	l 1000 Mbps full duplex (optical port) l 10 Mbps half/full duplex (electric port) l 100 Mbps half/full duplex (electric port) l 1000 Mbps full duplex (electric port)
SFP module	Refer to Table 1-4
Port cable and max transmission distance	100 m (328 ft) over category-5 twisted pair cable
Supported standard	l IEEE 802.3 l IEEE 802.3u l IEEE 802.3z l IEEE 802.3ab l IEEE 802.1p l IEEE 802.1Q l IEEE 802.1D l IEEE802.1X l IEEE802.1s l IEEE802.1w l IEEE 802.3x l IEEE 802.3ad

1.3.2 Panel and LEDs

LS81T12PE has 12 ´ 10/100/1000Base-T ports and four 1000Base-X (SFP) ports; each has a status LED with it. Figure 1-6 illustrates the panel of an LS81T12PE.

Figure 1-6 LS81T12PE panel

(1) Interface number	(2) Silkscreen
(3) Nut	(4) LPU edge (Green)
(5) Ejector lever	(6) SPF port (Gigabit)
(7) Interface status LED	(8) Ethernet port (Gigabit)

Figure 1-7 LS81T12PE panel

The status LEDs on an LS81T12PE are described in Table 1-6.

Table 1-6 Description of LEDs on the panel of an LS81T12PE

LED	Status
LINK/ACT	OFF	The link is down or no link is presented.
	ON	The link is active.
	Blinking	Data is being transmitted or received on the port.

1.3.3 Port Cable

Refer to section 1.2.3 "Port Cable” on page 1-5 for information about the port cable required by an LS81T12PE.

1.4 LS81T 16P

Figure 1-8 Appearance of LS81T16P

1.4.1 Specifications

LS81T16P provides the XG high-speed bus and 16 × 10/100/1000Base-T ports and 8 × 1000Base-X (SFP) ports.

Table 1-7 LS81T16P specifications

Item	LS81T16P
CPU	MPC8245 300 MHz
BootROM	512 KB
Flash memory	32 MB
SDRAM	256 MB
Dimensions (H × W x D)	40.1 × 376.7 × 354.5 mm (1.6 × 14.8 × 14 in.)
Port	l 16 ´ 10/100/1000Base-T auto-sensing Ethernet electric ports l 8 × 1000Base-X (SFP) Ethernet ports
Max power consumption	55 W
Connector	RJ45, LC
Number of ports	24
Port rate	l 10 Mbps half/full duplex l 100 Mbps half/full duplex l 1000 Mbps full duplex l MDI/MDI-X auto-sensing
SFP module	Refer to Table 1-4
Port cable and max transmission distance	100 m (328 ft) over category-5 twisted pair cable
Supported standard	l IEEE 802.3 l IEEE 802.3u l IEEE 802.3z l IEEE 802.3ab l IEEE 802.1p l IEEE 802.1Q l IEEE 802.1D l IEEE 802.1X l IEEE 802.1s l IEEE 802.1w l IEEE 802.3x l IEEE 802.3ad

1.4.2 Panel and LEDs

The following figure illustrates the panel of an LS81T16P.

Figure 1-9 LS81T16P panel

(1) Silkscreen	(2) Nut
(3) LPU edge (Green)	(4) Ejector lever
(5) SPF port (Gigabit)	(6) Port status LED
(7) Ethernet port (Gigabit)

Figure 1-10 LS81T16P panel

The status LEDs on an LS81T16P are described in following table

Table 1-8 Description of LEDs on the panel of an LS81T16P

LED	Status
LINK/ACT	OFF	The link is down or no link is presented.
	ON	The link is active.
	Blinking	Data is being transmitted or received on the port.

1.4.3 Port Cable

Refer to section 1.2.3 "Port Cable” on page 1-5 for information about the port cable required by an LS81T16P.

1.5 LS81T32P

Figure 1-11 Appearance of LS81T32P

1.5.1 Specifications

LS81T32P provides the XG high-speed bus, 32 × 10/100/1000Base-T auto-sensing Ethernet electric ports and 16 ×1000Base-X (SFP) Ethernet ports.

Table 1-9 LS81T32P specifications

Item	LS81T32P
CPU	MPC8245 300 MHz
BootROM	512 KB
Flash memory	32 MB
SDRAM	256 MB
Dimensions (H × W x D)	40.1 × 376.7 × 354.5 mm (1.6 × 14.8 × 14 in.)
Port	l 32 ´ 10/100/1000Base-T auto-sensing Ethernet electric ports l 16 × 1000Base-X (SFP) Ethernet ports
Max power consumption	95 W
Connector	RJ45, LC
Number of ports	48
Port rate	l 10 Mbps half/full duplex l 100 Mbps half/full duplex l 1000 Mbps full duplex l MDI/MDI-X auto-sensing
SFP module	Refer to Table 1-4
Port cable and max transmission distance	100 m (328 ft) over category-5 twisted pair cable
Supported standard	l IEEE 802.3 l IEEE 802.3u l IEEE 802.3z l IEEE 802.3ab l IEEE 802.1p l IEEE 802.1Q l IEEE 802.1D l IEEE 802.1X l IEEE 802.1s l IEEE 802.1w l IEEE 802.3x l IEEE 802.3ad

1.5.2 Panel and LEDs

The following figure illustrates the panel of an LS81T32P.

Figure 1-12 LS81T32P panel

(1) Silkscreen	(2) Nut
(3) LPU edge (Green)	(4) Ejector lever
(5) Port status LED	(6) SPF port (Gigabit)
(7) Ethernet port (Gigabit)

Figure 1-13 LS81T32P panel

The status LEDs on an LS81T32P are described in following table.

Table 1-10 Description of LEDs on the panel of an LS81T32P

LED	Status
LINK/ACT	OFF	The link is down or no link is presented.
	ON	The link is active.
	Blinking	Data is being transmitted or received on the port.

1.5.3 Port Cable

Refer to section 1.2.3 "Port Cable” on page 1-5 for information about the port cable required by an LS81T32P.

1.6 LS81GT48B

Figure 1-14 Appearance of LS81GT48B

1.6.1 Specifications

LS81GT48B provides the XG high-speed bus, and 48 ×10/100/1000Base-T Ethernet ports.

Table 1-11 LS81GT48B specifications

Item	LS81GT48B
CPU	MPC8245 300 MHz
BootROM	512 KB
Flash memory	32 MB
SDRAM	256 MB
Dimensions (H × W x D)	40.1 × 376.7 × 354.5 mm (1.6 × 14.8 × 14 in.)
Max power consumption	85 W
Connector	RJ45
Number of ports	48
Port rate	l 10 Mbps half/full duplex l 100 Mbps half/full duplex l 1000 Mbps half/full duplex l MDI/MDI-X auto-sensing
Port cable and max transmission distance	100 m (328 ft) over category-5 twisted pair cable
Supported standard	l IEEE 802.3 l IEEE 802.3ab l IEEE 802.3x l IEEE 802.1p l IEEE 802.1D l IEEE 802.1Q l IEEE 802.1X l IEEE 802.1s l IEEE 802.1w

1.6.2 Panel and LEDs

The following figure illustrates the panel of an LS81GT48B.

Figure 1-15 LS81GT48B panel

(1) Silkscreen	(2) Nut
(3) LPU edge (Green)	(4) Ejector lever
(5) Ethernet port LED	(6) Ethernet port

Figure 1-16 LS81GT48B panel

Each port is with a green LED.

Table 1-12 Description of LEDs on the panel of an LS81GT48B

LED	Status
LINK/ACT	OFF	The link is down or no link is presented.
	ON	The link is active.
	Blinking	Data is being transmitted or received on the port.

1.6.3 Port Cable

The port cable is category-5 twisted pair cable connected with RJ45 connectors, whose maximum transmission distance is 100 m.

1.7 LS81GP48

Figure 1-17 Appearance of LS81GP48

1.7.1 Specifications

LS81GP48 provides the XG high-speed bus, and 48 ×10/100/1000Base-T Ethernet ports.

Table 1-13 LS81GP48 specifications

Item	LS81GP48
CPU	MPC8245 300 MHz
BootROM	512 KB
Flash memory	32 MB
SDRAM	256 MB
Dimensions (H × W x D)	40.1 × 376.7 × 354.5 mm (1.6 × 14.8 × 14 in.)
Max power consumption	75 W
Connector	LC
Number of ports	48
Port rate	l 1000 Mbps l Full duplex
SFP module	Refer to Table 1-4
Supported standard	l IEEE 802.3 l IEEE 802.3u l IEEE 802.3z l IEEE 802.1p l IEEE 802.1Q l IEEE 802.1D l IEEE 802.3x l IEEE 802.1X l IEEE 802.1w l IEEE 802.3ad l IEEE 802.1s

1.7.2 Panel and LEDs

The following figure illustrates the panel of an LS81GP48.

Figure 1-18 LS81GP48 panel

(1) Silkscreen	(2) Nut
(3) LPU edge (Green)	(4) Ejector lever
(5) Ethernet port LED	(6) SFP interface

Figure 1-19 LS81GP48 panel

The status LEDs on an LS81GP48 are described in following table.

Table 1-14 Description of LEDs on the panel of an LS81GP48

LED	Status
LINK/ACT	OFF	The link is down or no link is presented.
	ON	The link is active.
	Blinking	Data is being transmitted or received on the port.

1.7.3 Port Cable

Refer to Table 1-4.

1.8 LS81TGX2

Figure 1-20 Appearance of LS81TGX2

1.8.1 Specifications

LS81TGX2 provides the XG high-speed bus and two full duplex 10GBase-XFP ports.

Table 1-15 LS81TGX2 specifications

Item	LS81TGX2
CPU	MPC8245 300 MHz
BootROM	512 KB
Flash memory	32 MB
SDRAM	256 MB
Dimensions (H × W x D)	40.1 × 376.7 × 354.5 mm (1.6 × 14.8 × 14 in.)
Max power consumption	35 W
Connector	LC
Number of ports	2
Port rate	l 10 Gbps l Full duplex
XFP module	l XFP-LX-SM1310 (single mode optical fiber, 1310 nm, 10 km [6.2 mi] ) l XFP-SX-MM850 (multimode optical fiber, 850 nm, 300 m [984 ft] )
Supported standard	l IEEE 802.3 l IEEE 802.1p l IEEE 802.1Q l IEEE 802.1D l IEEE 802.3x l IEEE 802.3ad l IEEE 802.3ae l IEEE 802.1X l IEEE 802.1s l IEEE 802.1w

1.8.2 Panel and LEDs

The following figure illustrates the panel of an LS81TGX2.

Figure 1-21 LS81TGX2 panel

(1) Interface number	(2) Interface status LED (LINK)
(3) Interface status LED (ACT)	(4) Silkscreen
(5) Nut	(6) LPU edge (Green)
(7) Ejector lever	(8) XFP module interface (10 Gigabit)

Figure 1-22 LS81TGX2 panel

The status LEDs on an LS81TGX2 are described in following table.

Table 1-16 Description of LEDs on the panel of an LS81TGX2

LED	Status
LINK	OFF	The link is down or no link is presented.
LINK	ON	The link is active.
ACT	OFF	No data is being transmitted or received on the port
ACT	Blinking	Data is being transmitted or received on the port.

1.8.3 Port Cable

Table 1-17 Description on the port cables for LS81TGX2

XFP module	Central wavelength	Connector	Matching cable	Maximum transmission distance
XFP-SX-MM850	850 nm	LC	50 µm/125 µm multimode optical fiber cable	300 m (984 ft)
XFP-LX-SM1310	1310 nm	LC	9 µm/125 µm single mode optical fiber cable	10 km (6 mi)

1.9 LS81TGX4

Figure 1-23 Appearance of LS81TGX4

1.9.1 Specifications

LS81TGX4 provides the XG high-speed bus and four full duplex 10GBase-XFP ports.

Table 1-18 LS81TGX4 specifications

Item	LS81TGX4
CPU	MPC8245 300 MHz
BootROM	512 KB
Flash memory	32 MB
SDRAM	256 MB
Dimensions (H × W x D)	40.1 × 376.7 × 354.5 mm (1.6 × 14.8 × 14 in.)
Max power consumption	55 W
Connector	LC
Number of ports	4
Port rate	l 10 Gbps l Full duplex
XFP module	l XFP-LX-SM1310 (single mode optical fiber, 1310 nm, 10 km [6.2 mi] ) l XFP-SX-MM850 (multimode optical fiber, 850 nm, 300 m [984 ft] )
Supported standard	l IEEE 802.3 l IEEE 802.1p l IEEE 802.1Q l IEEE 802.1D l IEEE 802.3x l IEEE 802.3ad l IEEE 802.3ae l IEEE 802.1X l IEEE 802.1s l IEEE 802.1w

1.9.2 Panel and LEDs

The following figure illustrates the panel of an LS81TGX4.

Figure 1-24 LS81TGX4 panel

(1) Interface number	(2) Interface status LED (LINK)
(3) Interface status LED (ACT)	(4) Silkscreen
(5) Nut	(6) LPU edge (Green)
(7) Ejector lever	(8) XFP module interface (10 Gigabit)

Figure 1-25 LS81TGX4 panel

Refer to Table 1-16 for the description of LEDs on an LS81TGX4.

1.9.3 Port Cable

Refer to Table 1-4.

1.10 LPUs Supported by SRPUs

I. LPUs supported by SRPUs

Table 1-19 LPUs supported by SRPUs

Item	LS81T12PE/ LS81P12TE	LS81T16P	LS81T32P	LS81GT48B	LS81GP48	LS81TGX2	LS81TGX4
LS81FT48E	√	—	—	—	—	—	—
LS81FT48F	√	—	—	—	—	—	—
LS81FP48	√	—	—	—	—	—	—
LS81GT8UE	√	—	—	—	—	—	—
LS82GT20	√	—	—	—	—	—	—
LS82GT20A	√	—	—	—	—	—	—
LS81GT48	√	—	—	—	—	—	—
LS81GT48A	√	—	—	—	—	—	—
LS81GT48B	—	√	√	√	√	√	√
LS81T12P	√	—	—	—	—	—	—
LS81T12PE	√	—	—	—	—	—	—
LS81T16P	—	√	√	√	√	√	√
LS81T32P	—	√	√	√	√	√	√
LS81P12T	√	—	—	—	—	—	—
LS81P12TE	√	—	—	—	—	—	—
LS81GP8UB	√	—	—	—	—	—	—
LS82GP20	√	—	—	—	—	—	—
LS82GP20A	√	—	—	—	—	—	—
LS81GP48	—	√	√	√	√	√	√
LS81TGX1C	√	—	—	—	—	—	—
LS81TGX2	—	√	√	√	√	√	√
LS81TGX4	—	√	√	√	√	√	√
LS81VSNP	—	√	√	√	√	√	√

II. Introduction to LPUs

l LS81FT48E: provides forty-eight 10Base-T/100Base-TX ports.

l LS81FT48F: provides forty-eight 10Base-T/100Base-TX ports; supports the PoE function.

l LS81FP48: provides forty-eight 100Base-FX (SFP) ports.

l LS81GT8UE: provides eight 10/100/1000Base-T ports.

l LS82GT20: provides twenty 10/100/1000Base-T ports.

l LS82GT20A: provides twenty 10/100/1000Base-T ports.

l LS81GT48: provides forty-eight 10/100/1000Base-T ports.

l LS81GT48A: provides forty-eight 10/100/1000Base-T ports and supports PoE function.

l LS81T12P: provides twelve 10/100/1000Base-T ports and four 1000Base-X (SFP) ports.

l LS81P12T: provides four 10/100/1000Base-T ports and twelve 1000Base-X (SFP) ports.

l LS81GB8UA: provides eight 1000Base-X (SFP) ports.

l LS82GP20: provides twenty 1000Base-X (SFP) ports.

l LS82GP20A: provides twenty 1000Base-X (SFP) ports.

l LS81TGX1C: provides one 10GBase-R-XENPAK port.

l LS81VSNP: provides no service port, supports the XG high-speed bus, features high performance network processor (NP) and CPU, and assists other LPUs to provide functions of policy-based routing, network address translation (NAT), and Netstream.

1.11 Physical Description of the S7502

1.11.1 Chassis and Slots

I. Front view

The S7502 chassis uses an XG high-speed bus and XGbus is silkscreened on the chassis.

Power supply module slots, RESET button, COM port (for PoE management), console port, 10Base-T/100Base-TX management port and its status LED, fan LED, and card status LED are in sequence arranged on the front panel.

The S7502 chassis provides two horizontal slots. An SRPU is required in slot 0 and does not support active-standby switchover), while an LPU is optional in slot 1..

Figure 1-26 illustrates the front view of an S7502, where an LS81TGX2 is inserted in slot 0 and slot 1, respectively. The LS81TGX2 in slot 0 serves as an SRPU, while the LS81TGX2 in slot 1 serves as an LPU.

(1) Power module	(2) RESET button
(3) COM port	(4) Console port
(5) Ethernet port for management and upgrade	(6) LED of Ethernet port for management and upgrade
(7) Fan LED	(8) Card status LED
(9) Fan tray	(10) LPU
(11) SRPU

Figure 1-26 Panel of an S7502 switch (an AC chassis in an example)

l Power modules

The power modules, in 1+1 redundancy backup, are at the top left corner of the chassis to provide AC power supply. There are LED, power switch and power input socket on a power supply module (refer to Figure 1-31 for more information).

l RESET button

You can reset the system with the RESET button.

COM port

Table 1-20 COM port attributes

Item	Description
Connector	RJ45
Number of connector	1
Supported standard	Asynchronous EIA/TIA-232
Baudrate	£ 115,200 bps (defaults to 9,600 bps)
Transmission distance	£ 15 m (49.2 ft)
Function	For monitoring external PoE power supply when connected to it

& Note:

The S7502 provides an independent power over Ethernet (PoE) module and can remotely provide power to powered devices (PDs), such as IP phone sets, WLAN access points (APs). There are S7502 PoE chassis and non-PoE chassis. If the PoE function is required, select an S7502 PoE chassis.

l Console port

The Console port matches RJ45 connector and can be connected to a PC with an asynchronous serial port cable, for local system debugging, configuration, maintenance, management, system software loading and so on. It also can be used to connect to a Modem device for remote debugging, configuration, maintenance, management and other similar tasks.

Table 1-21 Console port attributes

Item	Description
Connector	RJ45
Number of connector	1
Electric standard	Asynchronous EIA/TIA-232
Baud rate	£ 115,200 bps, defaults to 9,600 bps
Transmission distance	£ 15 m (49.2 ft)
Function	l For connection with an ASCII terminal l Being connected to the serial interface of a local PC or a remote PC (through a pair of Modems) running terminal emulation software

l Ethernet interface for management and upgrade (10Base-T/100Base-TX)

The management port matches RJ45 connector and can be used to connect to a PC for local system debugging, system software loading and other similar tasks, or to a remote a network management station (NMS) for remote management.

Table 1-22 Attributes of Ethernet interface for management and upgrade

Item	Description
Connector	RJ45
Number of connector	1
Port rate	l 10 Mbps, half/full duplex l 100 Mbps, half/full duplex l MDI-X
Port cable and max transmission distance	100 m (328 ft) over category-5 twisted pair cable
Function	For system software upgrade and network management

The corresponding LEDs are described in the following table.

Table 1-23 Management port status LEDs

LED	Status
LINK (Green)	OFF	No link is presented.
LINK (Green)	ON	A link is presented.
ACT (Green)	OFF	No data traffic through the port
ACT (Green)	Blinking	Data is being transmitted or received on the port.

l Fan tray status LEDs (FAN)

Table 1-24 Fan tray status LEDs

LED	Status
OK (Green)	OFF	A fan is faulty or out of position.
OK (Green)	ON	The fans run normally.
FAIL (Green)	OFF	The fans run normally.
FAIL (Green)	ON	A fan is faulty or out of position.

l LPU status LEDs (LPU1, LPU2)

LPU1 shows the status of the LPU in slot 0;

LPU2 shows the status of the LPU in slot 1.

Table 1-25 Card status LED

LED	Status
RUN (Green)	OFF or ON	The LPU is faulty or out of position.
RUN (Green)	Blinking	The LPU runs normally.
ALM (Red)	OFF	The card is normal or out of position.
ALM (Red)	ON	The LPU is faulty.

II. Rear view

(1) Grounding screw	(2) COM port (PSE monitoring port)
(3) RTN (+) terminal of PoE power supply input	(4) NEG (-) terminal of PoE power supply input

Figure 1-27 Rear view of an S7502 PoE chassis

An S7502 PoE chassis provides PoE power supply input terminals, through which the PoE power supply outputs –48 VDC to the switch.

& Note:

The backplane, SRPU, power module and fan tray all are required components for the S7502.

1.11.2 Color Description on the Fan Tray and Cards

I. Color description on the fan tray

The slot number in the green area on the fan tray of the S7502 indicates that the slot is for an SRPU, and the slot number in the purple area indicates that the slot is for an LPU.

II. Color description on cards

The left and right edges of an SRPU are in green, and those of an LPU are in purple.

& Note:

In an S7502 Ethernet switch, when a card with green edges is inserted into the SRPU slot, the card acts as an SRPU; when the card is inserted into the LPU slot, the card acts as an LPU. But a card with purple edges can be inserted only into the LPU slot.

1.11.3 Backplane

The backplane of an S7502 Ethernet switch is located in the integrated chassis and implements high-speed data interconnection between SRPU and LPU and system management and control signal interconnection.

The backplane mainly functions in:

l Providing communication channels for signal exchange between cards.

l Providing support for card hot-swapping

l Auto-detecting the card type inserted at slots

l Leading in electric power for distributed supply to the system

l Leading in signal lines for monitoring the fan tray and power frame

(1) Power module socket	(2) Card socket
(3) Fan tray socket

Figure 1-28 Backplane of the S7502

1.11.4 Power Supply System

& Note:

l The S7502 supports either AC input or DC input. You can choose one as needed.

l Although one power module can ensure the normal operation of the system, the S7502 provides two power module slots to implement 1+1 redundancy backup.

l The power module on the S7502 is hot-swappable.

The AC power module or DC power module of the S7502 meets the following requirements:

l Both an AC power module and DC power module have exactly the same dimensions and ports.

l Both an AC power module and DC power module have exactly the same type of output plug-in at the same position.

l An AC power module and DC power module cannot be both inserted in one S7502.

(1) Power socket	(2) Power module LED
(3) Power module handle	(4) Nut
(5) Power input switch	(6) Mousing-hook for power cable

Figure 1-29 Power module (AC)

I. AC power module

For AC power supply, you must use AC power module and AC power socket.

Table 1-26 AC power module specifications

Item	AC power module
Rated voltage range	100 VAC to 240 VAC.; 50 Hz to 60 Hz
Input voltage range	90 VAC to 264 VAC.; 50 Hz to 60 Hz
Max power output	296 W

II. DC power module

For DC power supply, you must use a DC power module and DC power socket.

Table 1-27 DC Power supply specifications

Item	DC power module
Rated voltage range	-48 VDC to -60 VDC
Input voltage range	-36 VDC to -72 VDC
Max power output	296 W

1.11.5 PoE Power Supply

When connected to a PoE power supply, the S7502 can supply power to remote PDs such as IP phone sets and WLAN access points, through a card supporting the PoE function.

Figure 1-30 Appearance of an external PoE power supply

& Note:

l The S7502 supports a PoE power supply with up to 1500 W power output. A single PoE module can provide 1250 W power output, and two can provide up to 2400 W power output in the case that PSE2500-A3 supplies 100 VAC to 140 VAC input voltage. Three PoE modules are required to provide output power of 2400 W if power supply redundancy is desired. With 200 VAC to 240VAC input voltage, a single PoE module can provide 2500 W power output. Two PoE modules are required to provide 2500 W power output if power supply redundancy is desired.

l There are S7502 PoE chassis and non-PoE chassis. If the PoE function is required, select an S7502 PoE chassis.

1.11.6 Fan Tray

The fan tray is on the right side of an S7502 chassis, and directly connected to the backplane through a connector. The fan fault signals are summarized and transmitted from the backplane to the SRPU for further processing. The fan tray is hot-swappable.

Figure 1-31 Fan tray on an S7502

1.12 Technical Specifications

Table 1-28 System specifications

Item		S7502
Physical dimensions (H ´ W ´ D)		130.5 x 436 x 400 mm (5.12 x 17.2 x 15.8 in.)
Weight (fully configured)		≤ 25 kg (55 lb )
Number of SRPU slots		1
Number of LPU slots		1
Max number of GE ports		96
Max number of FE ports		48
MTBF (mean time between failures)		218,000 h
MTTR (mean time to repair)		1 h
Input voltage	AC	Rated voltage: 100 VAC to 240 VAC, 50 Hz to 60 Hz Input voltage range: 90 VAC to 264 VAC, 50 Hz to 60 Hz
	DC	Rated voltage: -48 VDC to -60 VDC Input voltage range: -36 VDC to -72 VDC
	DC	PoE input voltage: -55 V to -46 V, 55.0 A
Operating temperature		0ºC to 45ºC (32ºF to 113ºF)
Relative humidity (noncondensing)		10% to 90%

H3C S7502 Ethernet Switch Installation Manual-(V1.02)

1.1.3 SRPU Specifications

1.2.3 Port Cable

I. Optical port cables for 12-port 1000Base-X (SFP)

II. Ethernet port cable for 4-port 10/100/1000Base-T

II. Introduction to LPUs

1.11 Physical Description of the S7502

1.11.1 Chassis and Slots

I. Front view

II. Rear view

I. Color description on the fan tray

II. Color description on cards

1.11.4 Power Supply System

I. AC power module

II. DC power module

1.11.6 Fan Tray

Intelligent Terminal Products

Product Support Services

Technical Service Solutions

Resource Center

Policy

Online Help

Become a Partner

Partner Policy & Program

Global Learning

Partner Sales Resources

Service Business

News & Events

Contact Us