3Com 3C16896, 3C16895, 3C16894, 3C16897 User Manual

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3Com Family Switch 7750

Installation Guide

3C16896 8-slot AC Chassis

3C16897 8-slot DC Chassis

3C16895 7-slot Chassis

3C16894 4-slot Chassis

and associated modules

Part No. 10016428-AB

Published December 2007

3Com Corporation

350 Campus Drive

Marlborough, MA

01752-3064

reproduced in any form or by any means or used to make any derivative work (such as translation,

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If you are a United States government agency, then this documentation and the software described herein

are provided to you subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense.

Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995)

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ABOUT THIS GUIDE

Conventions 5

ABOUT THIS GUIDE

This guide describes the 3Com

Switch 7750 and how to install hardware,

configure and boot software, and maintain software and hardware. This guide

also provides troubleshooting and support information for your switch.

This guide is intended for qualified Service personnel who are responsible for

configuring, using, and managing the switches. It assumes a working knowledge

of local area network (LAN) operations and familiarity with communication

protocols that are used to interconnect LANs.

Always download the Release Notes for your product from the 3Com World Wide

Web site and check for the latest updates to software and product documentation

http://www.3com.com.

Conventions Ta bl e 1 lists icon conventions that are used throughout this guide.

Documentation

The following manuals offer additional information necessary for managing your

Switch 7750:

■ Switch 7750 Command Reference Guide — Provides detailed descriptions of

command line interface (CLI) commands, that you require to manage your

Switch 7750.

■ Switch 7750 Configuration Guide— Describes how to configure your Switch

7750 using the supported protocols and CLI commands.

■ Switch 7750 Release Notes — Contains the latest information about your

product. If information in this guide differs from information in the release

notes, use the information in the Release Notes.

These documents are available in Adobe Acrobat Reader Portable Document

Format (PDF) on the 3Com World Wide Web site at

http://www.3com.com/.

Ta bl e 1 Notice Icons

Icon Notice Type Description

Information note Information that describes important features or

instructions.

Caution Information that alerts you to potential loss of data

or potential damage to an application, system, or

device.

Warning Information that alerts you to potential personal

injury.

6 ABOUT THIS GUIDE

SWITCH 7750 COMPONENTS

The chapter describes the following Switch 7750 components:

■ Switch Chassis

■ Switch Backplane

■ Fabric Module

■ Fabric 32 Submodules

■ I/O Modules

■ Power Module

■ Power Distribution

■ External PoE Power System

■ Fan Assembly

■ Switch 7750 Specifications

Switch Chassis The Switch 7750 is available with a 4-slot, 7-slot, or 8-slot chassis. Table 2 lists the

hardware features of each model.

Switch Backplane The Switch 7750 backplane is part of the integrated chassis and delivers

high-speed data transfer between the Fabric and I/O modules. The backplane

bandwidth capacity is 96 Gbps.

The backplane supports the following functions:

■ Interconnection of signals between modules

■ Provides communication channels

■ Hot swapping for modules

■ Automatic recognition of slots

■ Distribution of power and management of the power supply for the system

Ta bl e 2 Hardware Features of the Switch 7750 Models

4-Slot Chassis

3C16894

7-Slot Chassis

3C16895

8-Slot Chassis

AC 3C16896

DC 3C16897

Fabric slots 1 1 2

I/O module slots 3 6 6

Fan slot 1 1 2

AC/DC Power module

slots

2 3 3

8 CHAPTER 1: SWITCH 7750 COMPONENTS

Fabric Module There are three Fabric modules for the Switch 7750:

■ Fabric 64 (3C16857 or 3C16857R)

■ Fabric 32 (3C16872)

■ PoE Fabric 96 (3C16886)

The Fabric 64 and Fabric 32 are not interchangeable. You can install the Fabric 32

only in a 4-slot chassis. You can install the Fabric 64 only in the 7-slot or 8-slot

chassis. You can install the PoE Fabric 96 in all three chassis.

The Fabric module is the core of Switch 7750 system. It has the following

functions:

■ Connects the I/O modules through the backplane and forwards Layer 2 and

Layer 3 data

■ Manages and calculates routing

■ Performs the switch’s software upgrade and system reset functions

■ Monitors system power and the fan frame

Figure 1 illustrates the front panel of the PoE Fabric 96.

Figure 1 PoE Fabric 96

1 Compact Flash port

2 1000BASE-X-SFP ports

3 Console port

4 Ethernet port

5 Ethernet port LEDs

6 Fan LEDs

7 Power LEDs

8 I/O module LEDs

9 Reset button

Figure 2 illustrates the front panel of the Fabric 64.

Figure 2 Fabric 64

1 Reset button

2 Console port

3 Ethernet port

4 Ethernet port LEDs

3C16886

45 6

3C16857

1234

Fabric Module 9

5 Fan LEDs

6 Power module LEDs

7 I/O module LEDs

Figure 3 illustrates the front panel of the Fabric 32.

Figure 3 Fabric 32

1 Submodule slot

2 Console port

3 Ethernet port

4 Ethernet port LEDs

5 Fan LEDs

6 Power LEDs

7 I/O module LEDs

8 Reset button

Ta bl e 3 lists Fabric specifications.

Submodule Slot The submodule slot in the Fabric 32 offers extended Ethernet capacity using the

following submodules:

Ta bl e 3 Fabric Specifications

Item

PoE Fabric 96

(3C16886)

Fabric 64 (3C16857

or 3C16857R)

Fabric 32 (3C16872)

Bandwidth 96 Gbps 64 Gbps 32 Gbps

CPU MPC8245 MPC8260 200 Mhz

BootROM 512 KB 1 MB

SDRAM 256 M 256 MB

Flash 32 MB 16 MB

Submodule slot 1

Dimensions (L x W) 366.7 mm x 340 mm (14.5 x 13.5 in)

External ports One console port that supports local and remote dial-up configuration

management of the switch.

One 10BASE-T/100BASE-TX port for upgrade and network

management

One Compact Flash

port for storing log

and host version and

for online software

upgrades

Four 1000BASE-X-SFP

ports

Maximum power

consumption

80 W 80 W 70 W (with

submodule)

3C16872

1234567

10 CHAPTER 1: SWITCH 7750 COMPONENTS

■ 4-port 1000BASE-X-GBIC submodule

■ 4-port 10/100/1000BASE-T submodule

For more information on these submodules, see “Fabric 32 Submodules”on

page 12.

Fixed Ports The Switch 7750 Fabric modules provide the following fixed ports:

■ Compact Flash (CF) Port

■ 1000BASE-X-SFP (PoE Fabric 96 only)

■ Console Port

■ Ethernet Port

Compact Flash (CF) Port

The Fabric module provides a CF port to accommodate a standard CF card, where

you can save logging information, host version information, alarming and other

diagnostic information. You can also use the CF port to upgrade software online.

1000BASE-X-SFP Ports

The PoE Fabric 96 provides four 1000 Mbps full-duplex SFP ports. Table 4 describes

the SFP cables for these ports.

Ta bl e 8 describes the LEDs of the SFP ports.

Ta bl e 4 Cables for 1000BASE-T-SFP Modules

SFP Module

Central

Wavelength

Connector Matching Cable

Maximum

transmission

distance

1000BASE-SX-SFP 850 nm LC 50/125 µm

multimode

optical fiber

cable

550 m (1804 ft.)

62/125 µm

multimode

optical fiber

cable

275 m (902 ft.)

1000BASE-LX-SFP 1310 nm 9/125 µm single

mode optical

fiber cable

10 km (6 mi.)

1000BASE-LH-SFP 30 km (19 mi.)

1000BASE-ZX-LR-SFP 1550 nm 40 km (25 mi.)

1000BASE-ZX-VR-SFP 70 km (43 mi.)

1000BASE-T-FD-SFP RJ-45 100 m (328 ft.)

Ta bl e 5 SFP Port LEDs

LED Description

LINK/ACT Off — The line is not connected.

Green — The line is connected.

Green flashing — Data is being transmitted or received.

Fabric Module 11

Console Port

The console port is connected to the configuration terminal using an RJ-45

connector. You can use the console port for system debugging, configuration,

maintenance, management, and loading application files.

The console port can also be connected to a modem for functions such as remote

system debugging, configuration, maintenance, and management. You can

configure the baud rate on the console port.

Ta bl e 6 lists console port specifications.

Ethernet Port

The Ethernet port on the Fabric is connected to a computer using an RJ-45

connector. You can use the Ethernet port for system application downloading and

debugging. The Ethernet port can also be connected to devices such as a network

management workstation to manage the system remotely.

Ta bl e 7 lists Ethernet port specifications.

See “Electrical Port Connector” on page 78 for an illustration of the RJ-45

connector and MDI/MDI-X pinout details.

Ta bl e 8 describes the LEDs of the Ethernet port.

Ta bl e 6 Console Port Specifications

Specification Description

Port connector RJ-45

Port standard Asynchronous EIA/TIA-232

Baud rate 9600 bps (by default)

Transmission distance 15 m (45 ft)

Services Connects with character terminal

Connects with local or remote PC serial port and runs terminal

emulation on a PC (a pair of modems are required for a

remote connection)

Ta bl e 7 Ethernet Port Specifications

Specification Description

Port connector RJ-45

Number of port(s) 1

Port speed 10 Mbps, half/full duplex

100 Mbps, half/full duplex

MDI/MDIX auto sensing

Cable and maximum transmission

distance

Category-5 twisted pair for transmission within 100 m

(328 ft)

Port function Switch software upgrade and network management

Ta bl e 8 Ethernet Port LEDs

LED Description

LINK Off — The line is not connected.

Green — The line is connected.

12 CHAPTER 1: SWITCH 7750 COMPONENTS

Module LEDs The module LEDs show the status of the I/O modules, as described in Table 9.

Power LEDs PWR1, PWR2, and PWR3 LEDs show the status of the power modules, as

described in

Ta bl e 10.

Fan LED Fan LEDs show the status of the fan frame, as described in Table 11.

Reset Button The reset button resets the entire system.

Fabric 32 Submodules The Fabric 32 provides a slot for one submodule. The Fabric 32 supports the

following submodules:

■ 4-Port 1000BASE-X-GBIC Submodule (3C16874)

■ 4-Port 10/100/1000BASE-T Submodule (3C16873)

4-Port 1000BASE-X-GBIC

Submodule

The 4-port 1000BASE-X-GBIC submodule provides four GE full-duplex Ethernet

GBIC ports.

Figure 4 illustrates the 4-port 1000BASE-X-GBIC submodule.

ACTIVE Green — No data is being transmitted or received.

Green flashing — Data is being transmitted or received.

Table 8 Ethernet Port LEDs (continued)

LED Description

Ta bl e 9 I/O Module LEDs

LED Status description

RUN Green or off — The module failed or has not been inserted.

Green flashing — The module is working normally.

ALM Off — The module is working normally or has not been

inserted.

Green or green flashing — The module failed or is not

working normally.

Ta bl e 10 Power LEDs

LED Description

OK Green — The corresponding power module is working

normally.

Off — The corresponding power module is not working or

has not been installed.

FAIL Green — The corresponding power module is not working.

Off — The corresponding power module works normally or

has not been installed.

Ta bl e 11 Fan LEDs

LED Description

OK Green — The fan is working normally.

Off — The fan is not working or has not been installed.

FAIL Green — The fan is not working.

Off — The fan is working normally or has not been installed.

Fabric 32 Submodules 13

Figure 4 4-Port 1000BASE-X-GBIC Submodule

Ethernet GBIC port

2 Ethernet GBIC port LED

Ta bl e 12 describes the 4-port 1000BASE-X-GBIC submodule LEDs.

Ta bl e 13 lists the specifications for each of the 4-port 1000BASE-X-GBIC

submodule.

4-Port

10/100/1000BASE-T

Submodule

The 4-Port 10/100/1000BASE-T submodule provides four 10/100/1000 Mbps

auto-negotiation service ports.

Figure 5 illustrates the 4-port 10/100/1000BASE-T submodule.

Figure 5 4-Port 10/100/1000BASE-T Submodule

1 Ethernet port

2 Ethernet port LEDs

Ta bl e 12 4-Port 1000BASE-X-GBIC Submodule LEDs

LED Description

LINK/ACT Green — The link is operating normally.

Off — The link is not operating.

Green flashing — Data is being transmitted or received.

Ta bl e 13 4-Port 1000BASE-X-GBIC Submodule Specifications

Optional GBIC

Module

Central

Wavelength

Connector

Type

Interface Fiber

Specifications

Max.

Transmission

Distance

1000BASE-SX-MM

(3CGBIC91)

850 nm SC 50/125 µm

multi-mode fiber

62.5/125 µm

Multi-mode fiber

500 m (1640 ft)

220 m (722 ft)

1000BASE-LX-SM-IR

(3CGBIC92)

1310 nm SC 9/125 µm

Single-mode fiber

10 km (6 mi)

1000BASE-LX-SM

(3CGBIC97)

1550 nm SC 9/125 µm

Single-mode fiber

40 km (25 mi)

70 km (43.5 mi)

3C16874

3C16873

14 CHAPTER 1: SWITCH 7750 COMPONENTS

Ta bl e 14 describes the 4-port 10/100/1000BASE-T submodule LEDs.

Ta bl e 15 lists specifications of the 4-port 10/100/1000BASE-T submodule.

See “Electrical Port Connector” on page 78 for an illustration of the RJ-45

connector and MDI/MDI-X pinout details.

I/O Modules The Switch 7750 provides multiple slots for I/O modules below the Fabric slots.

The following I/O modules are supported:

■ 48-port 10/100BASE-T FE PoE Module (3C16891)

■ 48-port 10/100/1000BASE-T PoE Module (3C16890)

■ 48-port 10/100BASE-TX FE Module (3C16889)

■ 48-port 10/100/1000BASE-T Module (3C16888)

■ 48-port 100BASE-X SFP Module

■ 20-Port 10/100/1000BASE-T Module (3C16863A)

■ 20-Port 1000BASE-X-SFP Module (3C16862A)

■ 12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFP Module (3C168916)

■ 12-port 1000BASE-X SFP and 4-port 10/100/1000BASE-T Module (3C186917)

■ 8-port 1000BASE-X GBIC Module (3C16858)

■ 8-port 10/100/1000BASE-T GE Module (3C16859)

■ 100Base-FX SFP mode (3C16865915)

Consider the following when selecting I/O modules:

■ You can configure several I/O modules of the same type

■ Any combination of I/O modules can be inserted but only PoE I/O modules

provide the features of power over Ethernet.

Ta bl e 14 4-Port 10/100/1000BASE-T Submodule LEDs

LED Description

LINK Off — The link is not operating.

On — The link is operating normally.

ACT Off — No data is being transmitted or received.

Green flashing — Data is being transmitted or received.

Ta bl e 15 4-Port 10/100/1000BASE-T Submodule Specifications

Specification Description

Connector type RJ-45

Number of ports 4

Port speed 1000 Mbps full duplex

100 Mbps half/full duplex

10 Mbps half/full duplex

MDI/MDI-X auto-sensing

Cable and maximum

transmission distance

Category 5 twisted pair up to 100 m (328 ft)

I/O Modules 15

■ You must select I/O module port cables that are compatible with each installed

I/O module

48-port 10/100BASE-T FE

PoE Module

The 48-port 10/100BASE-T FE PoE module provides 48 10/100 Mbps auto-sensing

Ethernet ports that provide a remote power supply to powered devices

Figure 12illustrates the 48-port 10/100BASE-T FE PoE module.

Figure 6 48-port 10/100BASE-T FE PoE Module

Figure 13 illustrates the front panel and LEDs of the 48-port 10/100BASE-T FE PoE

module.

Figure 7 Front Panel of the 48-port 10/100BASE-T FE PoE Module

1 Ethernet port

2 Ethernet port LED

Ta bl e 22 describes the 48-port 10/100BASE-T FE PoE Module LEDs.

Ta bl e 23 describes the specifications for the 48-port 10/100BASE-T FE PoE module.

Ta bl e 16 module LED

LED Description

LINK/ACT Green — The port is connected.

Off — The port is not connected.

Green flashing — Data is being transmitted or received.

Ta bl e 17 Specifications for the 48-port 10/100BASE-T FE PoE Module

Specification Description

CPU MPC8241

BootROM 512 KB

SDRAM 128 M

Dimensions (L X W) 366.7 x 340 mm (14.4 x 13.4 in.)

Maximum power consumption 35 W

Connector RJ-45

Number of ports 48

3C16891

16 CHAPTER 1: SWITCH 7750 COMPONENTS

48-port

10/100/1000BASE-T PoE

Module

The 48-port 10/100/1000BASE-T PoE module provides 48 10/100/1000 Mbps

auto-sensing Ethernet ports that provide a remote power supply to powered

devices.

Figure 12illustrates the 48-port 10/100/1000BASE-T PoE module.

Figure 8 48-port 10/100/1000BASE-T PoE Module

Figure 13 illustrates the front panel and LEDs of the 48-port 10/100/1000BASE-T

PoE module.

Figure 9 Front Panel of the 48-port 10/100/1000BASE-T PoE Module

1 Ethernet port

2 Ethernet port LED

Port transmission speed 10/100 Mbps half-/full-duplex MDI/MDI-X auto-sensing

Cables and maximum

transmission distance

100 m (328 ft.)

Maximum power each port

provides

15.4 W

Compliance IEEE802.3

IEEE802.3u

IEEE802.3x

IEEE802.3ad

IEEE802.1p

IEEE802.1D

IEEE802.1Q

IEEE802.1X

IEEE802.1s

IEEE802.1w

IEEE802.3af

Table 17 Specifications for the 48-port 10/100BASE-T FE PoE Module (continued)

Specification Description

3C16890

I/O Modules 17

Ta bl e 22 describes the 48-port 10/100/1000BASE-T PoE module LEDs.

Ta bl e 23 describes the specifications of the 48-port 10/100/1000BASE-T PoE

module.

48-port 10/100BASE-TX

FE Module

The 48-port 10/100BASE-TX FE module provides 48 10/100 Mbps auto-sensing

Ethernet electrical ports.

Figure 10 illustrates the 48-port 10/100BASE-T FE module.

Figure 10 48-port 10/100BASE-T FE Module

Ta bl e 18 48-port 10/100/1000BASE-T PoE Module LED

LED Description

LINK/ACT Green — The port is connected.

Off — The port is not connected.

Green flashing — Data is being transmitted or received.

Ta bl e 19 Specifications for the 48-port 10/100/1000BASE-T PoE Module

Specification Description

CPU MPC8241

BootROM 512 KB

SDRAM 128 M

Dimensions (L X W) 366.7 x 340 mm (14.4 x 13.4 in.)

Maximum power consumption 70 W

Connector RJ-45

Number of ports 48

Port transmission speed 10/100/1000 Mbps half-/full-duplex

MDI/MDIX auto-sensing

Cables and maximum

transmission distance

Category 5 twisted pair with a maximum distance of 100 m

(328 ft.)

Compliance IEEE802.3ab

IEEE802.3

IEEE802.3i

IEEE802.3x

IEEE802.1p

IEEE802.1D

IEEE802.1Q

IEEE802.1X

IEEE802.1s

IEEE802.1w

18 CHAPTER 1: SWITCH 7750 COMPONENTS

Figure 11 illustrates the front panel and LEDs of the 48-port 10/100BASE-TX FE

module.

Figure 11 Front Panel of the 48-Port 10/100BASE-TX FE module

1 Ethernet port

2 Ethernet port LED

Each 100 Mbps Ethernet port has a green LED, indicating LINK/ACTIVE status.

Ta bl e 20 describes the 48-port 10/100BASE-TX FE module LED.

Ta bl e 21 describes the specifications of the 48-port 10/100BASE-TX FE module.

See “Electrical Port Connector” on page 78 for an illustration of the RJ-45

connector and MDI/MDI-X pinout details.

Ta bl e 20 48-Port 10/100BASE-TX FE module LED

LED Description

LINK/ACT Green — The port is connected.

Off — The port is not connected.

Green flashing — Data is being transmitted or received.

Ta bl e 21 Specifications for the 48-Port 10/100BASE-TX FE Module

Specification Description

CPU MPC850

BootROM 512 KB

SDRAM 64 MB

Dimensions (L X W) 366.7 x 340 mm (14.5 x 13.4 in)

Maximum power

consumption

75 W

Connector RJ-45

Number of ports 48

Port transmission

speed

10/100 Mbps half/full duplex

MDI/MDIX auto-sensing

Cables and maximum

transmission distance

Cables are 2 100-ohm Category-5 twisted pairs up to 100 m (300 ft).

Compliance IEEE802.3

IEEE802.3u

IEEE802.3x

IEEE802.3ad

IEEE802.1p

IEEE802.1D

IEEE802.1Q

IEEE802.1X

IEEE802.1s

IEEE802.1w

I/O Modules 19

48-port

10/100/1000BASE-T

Module

The 48-port 10/100/1000BASE-T module provides 48 10/100/1000 Mbps

auto-sensing Ethernet electrical ports.

Figure 12 illustrates the 48-port 10/100/1000BASE-T module.

Figure 12 48-port 10/100/1000BASE-T Module

Figure 13 illustrates the front panel and LEDs of the 48-port 10/100/1000BASE-T

module.

Figure 13 Front Panel of the 48-port 10/100/1000BASE-T Module

1 Ethernet port

2 Ethernet port LED

Ta bl e 22 describes the 48-port 10/100/1000BASE-T module LEDs.

Ta bl e 23 describes the specifications of the 48-port 10/100/1000BASE-T module.

Ta bl e 22 48-port 10/100/1000BASE-T Module LED

LED Description

LINK/ACT Green — The port is connected.

Off — The port is not connected.

Green flashing — Data is being transmitted or received.

Ta bl e 23 Specifications for the 48-port 10/100/1000BASE-T Module

Specification Description

CPU MPC8241

BootROM 512 KB

SDRAM 128 M

Dimensions (L X W) 366.7 x 340 mm (14.4 x 13.4 in.)

Maximum power consumption 70 W

Connector RJ-45

Number of ports 48

Port transmission speed 10/100/1000 Mbps half-/full-duplex MDI/MDI-X

auto-sensing

Cables and maximum

transmission distance

Category 5 twisted pair with a maximum transmission

distance of 100 m (328 ft.)

3C16888

20 CHAPTER 1: SWITCH 7750 COMPONENTS

48-port 100BASE-X SFP

Module

The 48-port 100BASE-X SFP module provides 48 100 Mbps full-duplex Ethernet

optical ports.

Figure 14 illustrates the 48-port 100BASE-X SFP module.

Figure 14 48-port 48-port 100BASE-X SFP Module

Figure 15 illustrates the front panel and LEDs of the 48-port 100BASE-X SFP

module.

Figure 15 Front Panel of the 48-port 48-port 100BASE-X SFP Module

1 Ethernet port

2 Ethernet port LED

Ta bl e 24 describes the 48-port 100BASE-X SFP module LEDs.

Ta bl e 25 describes the specifications of the 48-port 100BASE-X SFP module.

Compliance 1EEE 802.3ab

1EEE 802.3

1EEE 802.3u

1EEE 802.3x

1EEE 802.1p

1EEE 802.1D

1EEE 802.1Q

1EEE 802.1X

1EEE 802.1s

1EEE 802.1w

Table 23 Specifications for the 48-port 10/100/1000BASE-T Module (continued)

Specification Description

Ta bl e 24 48-port 100BASE-X SFP Module LED

LED Description

LINK/ACT Green — The port is connected.

Off — The port is not connected.

Green flashing — Data is being transmitted or received.

Ta bl e 25 Specifications for the 48-port 100BASE-X SFP Module

Specification Description

CPU MPC8241

BootROM 512 KB

SDRAM 128 M

3C16888

I/O Modules 21

Ta bl e 26 lists the cables for the 48-port 100BASE-X (SFP) ports

24-port 100BASE-FX

MMF FE Module

The 24-port 100BASE-FX MMF FE module provides 24 100 Mbps multi-mode

Ethernet optical port service channels.

Figure 16 illustrates the 24-port 100BASE-FX MMF FE module.

Dimensions (L X W) 366.7 x 340 mm (14.4 x 13.4 in.)

Maximum power consumption 36.5 W

Connector LC

Number of ports 48

SFP module 100BASE-FX-MM-SFP

100BASE-FX-SM-SFP

100BASE-FX-SM-LR-SFP

100BASE-FX-SM-VR-SFP

Port transmission speed 100 Mbps full-duplex

Compliance 1EEE 802.3

1EEE 802.3u

1EEE 802.3x

1EEE 802.3ad

1EEE 802.1p

1EEE 802.1D

1EEE 802.1Q

1EEE 802.1X

1EEE 802.1s

1EEE 802.1w

Ta bl e 26 Cables for the 48-port 100BASE-X SFP Module

SFP module

Central

wave-

length Connector Matching cable

Maximum

transmission

distance

100BASE-FX-MM-SFP 1310nm LC multimode optical fiber

cable

2 km (1.2 mi)

100BASE-FX-SM-SFP 1310nm 15 km (9.3 mi)

100BASE-FX-SM-LR-S

1310nm 9/125 µm single mode

optical fiber cable

40 km (24.9 mi)

100BASE-FX-SM-VR-S

1550nm 70km (43 mi)

Table 25 Specifications for the 48-port 100BASE-X SFP Module (continued)

Specification Description

22 CHAPTER 1: SWITCH 7750 COMPONENTS

Figure 16 24-Port 100BASE-FX MMF FE Module

Each 100 Mbps optical port has a green LED, as shown in Figure 17.

Figure 17 Front Panel of the 24-Port 100BASE-FX MMF FE Module

1 Ethernet port

2 Ethernet port LED

Ta bl e 27 describes the status of the 24-port 100BASE-FX MMF FE module LEDs.

The 24-port 100BASE-FX MMF FE module requires a 62.5/125 µm multi-mode

optical fiber cable with an MT-RJ connector and a central wavelength of 1300 nm.

Ta bl e 28 describes the specifications of the 24-port 100BASE-FX MMF FE module.

Ta bl e 27 24-Port 100BASE-FX MMF FE Module LEDs

LED Description

LINK/ACT Green — The port is connected.

Off — The port is not connected.

Green flashing — Data is being transmitted or received.

Ta bl e 28 Specifications for the 24-Port 100BASE-FX MMF FE Module

Specification Description

CPU MPC850

BootROM 512 KB

SDRAM 64 MB

Dimensions (L x W) 366.7 x 340 mm (14.5 x 13.4 in)

Maximum power

consumption

55 W

Connector type MT-RJ

Number of ports 24

Port transmission speed 100 Mbps, full-duplex

I/O Modules 23

20-Port

10/100/1000BASE-T

Module

The 20-Port 10/100/1000BASE-T module provides 20 10/100/1000BASE-T

auto-sensing Ethernet ports.

Figure 18 illustrates the 20-Port 10/100/1000BASE-T Module.

Figure 18 20-Port 10/100/1000BASE-T Module

Figure 19 illustrates the front panel of the 20-port 10/100/1000BASE-T module.

Figure 19 Front Panel of the 20-Port 10/100/1000BASE-T Module

1 Ethernet port

2 Ethernet port LED

Ta bl e 29 describes the 20-port 10/100/1000BASE-T module LEDs.

Cables and maximum

transmission distance

62.5/125 µm multi-mode optical fiber up to 2 km (1.3 mi)

Compliance IEEE 802.3

IEEE 802.3i

IEEE 802.3u

IEEE 802.3x

Table 28 Specifications for the 24-Port 100BASE-FX MMF FE Module (continued)

Specification Description

Ta bl e 29 20-Port 10/100/1000BASE-T Module LEDs

LED Description

LINK/ACT Off — The port is not operating.

On — The port is operating.

Green flashing — The port is transmitting or receiving data

3C16863

24 CHAPTER 1: SWITCH 7750 COMPONENTS

Ta bl e 30 lists specifications of the 20-port 10/100/1000BASE-T module.

20-Port 1000BASE-X-SFP

Module

The 20-port 1000BASE-X-SFP module provides 20 1000 BASE-X full duplex ports

and uses an SFP cable.

Figure 20 illustrates the 20-port 1000BASE-X-SFP module.

Figure 20 20-Port 1000BASE-X-SFP Module

Figure 21 illustrates the front panel of the 20-port 1000BASE-X-SFP module.

Figure 21 Front Panel of the 20-Port 1000BASE-X-SFP Module

Ta bl e 30 Specifications for the 20-Port 10/100/1000BASE-T Module

Specification Description

CPU MPC8241LZU200

BootROM 512 KB

SDRAM 64 MB

Dimensions (L x W) 366.7 x 340 mm (14.5 x 13.4 in)

Power consumption 45 W

Connector RJ-45

Number of ports 20

Transmission rate 10 Mbps half/full duplex

100 Mbps half/full duplex

1000 Mbps full duplex

Cable and maximum

transmission distance

Category-5 twisted pair

100 m (300 ft)

Compliance IEEE 802.3ab

IEEE 802.3

IEEE 802.3u

IEEE 802.3x

IEEE 802.1D

IEEE 802.1Q

3C168623C16862

+ 56 hidden pages

3Com 3C16896, 3C16895, 3C16894, 3C16897 User Manual

CONTENTS

ABOUT THIS GUIDE

Conventions Ta bl e 1 lists icon conventions that are used throughout this guide.

SWITCH 7750 COMPONENTS

■ Switch Chassis

■ Switch Backplane

Fabric Module There are three Fabric modules for the Switch 7750:

1 Submodule slot

Fixed Ports The Switch 7750 Fabric modules provide the following fixed ports:

Module LEDs The module LEDs show the status of the I/O modules, as described in Table 9.

Power LEDs PWR1, PWR2, and PWR3 LEDs show the status of the power modules, as

Fan LED Fan LEDs show the status of the fan frame, as described in Table 11.

Reset Button The reset button resets the entire system.

Fabric 32 Submodules The Fabric 32 provides a slot for one submodule. The Fabric 32 supports the

■ 4-Port 1000BASE-X-GBIC Submodule (3C16874)

I/O Modules The Switch 7750 provides multiple slots for I/O modules below the Fabric slots.

Figure 6 48-port 10/100BASE-T FE PoE Module

Figure 8 48-port 10/100/1000BASE-T PoE Module

Figure 12 48-port 10/100/1000BASE-T Module

Figure 18 20-Port 10/100/1000BASE-T Module

Figure 20 20-Port 1000BASE-X-SFP Module