3COM 3C16895 User Manual

Switch 7750 Installation Guide

3C16895 7-slot Chassis 3C16894 4-slot Chassis and associated modules

http://www.3com.com/

Part No. 10014824 Published June 2005

3Com Corporation 350 Campus Drive Marlborough, MA 01752-3064

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CONTENTS

ABOUT THIS GUIDE

Conventions 7 Related Documentation 8

SWITCH 7750 COMPONENTS

Switch Chassis 9 Switch Backplane 9 Fabric Module 10

Submodule Slot 11 Fixed Ports 12 Module LEDs 14 Power LEDs 14 Fan LED 14 Reset Button 14

Fabric 32 Submodules 14

4-Port 1000BASE-X-GBIC Submodule 14 4-Port 10/100/1000BASE-T Submodule 15

I/O Modules 16

48-port 10/100BASE-T FE PoE Module 17 48-port 10/100/1000BASE-T PoE Module 18 48-port 10/100BASE-T Auto-sensing FE Module 19 48-port 10/100/1000BASE-T Module 20 24-port 100BASE-FX MMF FE Module 22 20-Port 10/100/1000BASE-T Module 23 20-Port 1000BASE-X-SFP Module 24 8-port 1000BASE-X GBIC Module 25 8-port 10/100/1000BASE-T GE Module 27

1-Port 10GBASE-R-XENPAK Module 28 Power Module 29 Power Distribution 30 External PoE Power System 30 Fan Assembly 31 Switch 7750 Specifications 32

INSTALLING THE SWITCH 7750

Preparing to Install 33

General Safety Recommendations 33

Electrical Safety 34 Moving the Switch 34 Laser Safety 34

General Site Requirements 34

Installation Space 35 Installation Checklist 35 Installing the Chassis 36

Installing in a Standard Cabinet 36

Installing on a Workbench 36 Installing the Cabling Rack 36 Installing a Module 37 Installing a Submodule 37 Connecting the Ground Wire 38 Connecting and Configuring Power 38

Connecting AC Power Cords 38

Connecting the PoE Power Cord 39 Installing the Fan Assembly 40 Installing Cables 40

Connecting the Console Cable 40

Connecting the AUX Cable 40

Connecting Module Cables 41 Installing Cabling 42

Bench-Mounted Switch 42

Rack-Mounted Switch 42

Cable Binding 42 Post-installation Checklist 43

CONFIGURING THE SWITCH 7750

Configuring the Switch 7750 and a Local Terminal 45 Setting Terminal Parameters 45 Booting the Switch 7750 48

Powering up and Booting 49

MAINTAINING SOFTWARE

Upgrading Software 51

Upgrading the Software Image 51

Upgrading Software with FTP 51

Upgrading Software Using The BOOT Menu 52

Upgrading Software Using Xmodem 56

Upgrading Software Using TFTP 58 Lost Passwords 59 Using the BOOT Menu 59

MAINTAINING HARDWARE

Replacing a Power Module 61

Removing the AC Power Module 61

Installing the AC Power Module 61 Replacing a Power Supply 62 Replacing I/O Modules 63 Replacing the Fan Assembly 63

TROUBLESHOOTING

Troubleshooting the Configuration 65

No information is displayed on the terminal 65

The display characters are illegible 65 Troubleshooting Power 65 Troubleshooting the Fan 66 Troubleshooting the Modules 66

SWITCH 7750 CABLES

Console Cable 67 AUX Cable 67 Electrical Port Connector 68 Optical Fiber Cable Connectors 69

OBTAINING SUPPORT FOR YOUR SWITCH

Register Your Product to Gain Service Benefits 71 Purchase Value-Added Services 71 Troubleshoot Online 71 Access Software Downloads 71 Contact Us 72 Telephone Technical Support and Repair 72

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.

Ta bl e 1 Notice Icons

Icon Notice Type Description

Information note Information that describes important features or

Caution Information that alerts you to potential loss of data

Warning Information that alerts you to potential personal

Ta bl e 2 lists text conventions that are used throughout this guide.

Ta bl e 2 Text Conventions

Convention Description

Screen displays This typeface represents information as it appears on the

Keyboard key names If you must press two or more keys simultaneously, the key

The words “enter” and “type” When you see the word “enter” in this guide, you must type

instructions.

or potential damage to an application, system, or device.

injury.

screen.

names are linked with a plus sign (+), for example:

Press Ctrl+Alt+Del

something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says “type.”

8 ABOUT THIS GUIDE

Table 2 Text Conventions

Convention Description

Words in italics Italics are used to:

Emphasize a point.

Denote a new term at the place where it is defined in the text.

Identify menu names, menu commands, and software button names.

Examples:

From the Help menu, select Contents.

Click OK.

Words in bold Boldface type is used to highlight command names. For

example, “Use the display user-interface command to...”

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 or 7-Slot chassis. Ta bl e 3 lists the

hardware features of each model.

Ta bl e 3 Hardware Features of the Switch 7750 Models

4-Slot Chassis 7-Slot Chassis

Fabric slots 1 1

I/O module slots 3 6

Fan slot 1 1

AC Power module slots 2 3

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

10 CHAPTER 1: SWITCH 7750 COMPONENTS

3C16857

Fabric Module There are two 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 chassis. You can install the PoE Fabric 96 in both 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

3C16886

45 6

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

3C16857

1234

1 Reset button

2 Console port

3 Ethernet port

4 Ethernet port LEDs

5 Fan LEDs

3C16872

6 Power module LEDs

7 I/O module LEDs

Figure 3 illustrates the front panel of the Fabric 32.

Figure 3 Fabric 32

3C16872

Fabric Module 11

1234567

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 4 lists Fabric specifications.

Ta bl e 4 Fabric Specifications

PoE Fabric 96

Item

(3C16886)

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)

Fabric 64 (3C16857 or 3C16857R)

Fabric 32 (3C16872)

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)

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

following submodules:

12 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 14.

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. Ta bl e 5 describes the SFP cables for these ports.

Ta bl e 5 Cables for 1000BASE-T-SFP Modules

Maximum

SFP Module

Wavelength

Connector Matching Cable

1000BASE-SX-SFP 850 nm LC 50/125 µm

Central

transmission distance

550 m (1804 ft.) multimode optical fiber cable

62/125 µm

275 m (902 ft.) multimode optical fiber cable

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

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

mode optical fiber cable

10 km (6 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 9 describes the LEDs of the SFP ports.

Ta bl e 6 SFP Port LEDs

LED Description

LINK/ACT Off — The line is not connected.

Green — The line is connected. Green flashing — Data is being transmitted.

Fabric Module 13

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 7 lists console port specifications.

Ta bl e 7 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)

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 8 lists Ethernet port specifications.

Ta bl e 8 Ethernet Port Specifications

Specification Description

Port connector RJ-45

Number of port(s) 1

Port speed 10 Mbps, half/full duplex

Cable and maximum transmission distance

Port function Switch software upgrade and network management

100 Mbps, half/full duplex MDI/MDIX auto sensing

Category-5 twisted pair for transmission within 100 m (328 ft)

See “Electrical Port Connector” on page 68 for an illustration of the RJ-45 connector and MDI/MDI-X pinout details.

Ta bl e 9 describes the LEDs of the Ethernet port.

Ta bl e 9 Ethernet Port LEDs

LED Description

LINK Off — The line is not connected.

Green — The line is connected.

14 CHAPTER 1: SWITCH 7750 COMPONENTS

Table 9 Ethernet Port LEDs (continued)

LED Description

ACTIVE Green — No data is being transmitted.

Module LEDs The module LEDs show the status of the I/O modules, as described in Tab le 10.

Ta bl e 10 I/O Module LEDs

LED Status description

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

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

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

described in

Ta bl e 11 Power LEDs

Ta bl e 11.

Green flashing — Data is being transmitted.

Green flashing — The module is working normally.

inserted. Green or green flashing — The module failed or is not working normally.

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.

Fan LED Fan LEDs show the status of the fan frame, as described in Tab l e 12.

Ta bl e 12 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.

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

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

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

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.

Fabric 32 Submodules 15

3C16873

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

3C16874

Ethernet GBIC port

2 Ethernet GBIC port LED

Ta bl e 13 describes the 4-port 1000BASE-X-GBIC submodule LEDs.

Ta bl e 13 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.

Ta bl e 14 lists the specifications for each of the 4-port 1000BASE-X-GBIC submodule.

4-Port

10/100/1000BASE-T

Submodule

Ta bl e 14 4-Port 1000BASE-X-GBIC Submodule Specifications

Max. Optional GBIC Module

1000BASE-SX-MM (3CGBIC91)

1000BASE-LX-SM-IR (3CGBIC92)

1000BASE-LX-SM (3CGBIC97)

Central Wavelength

850 nm SC 50/125 µm

1310 nm SC 9/125 µm

1550 nm SC 9/125 µm

Connector Type

Interface Fiber Specifications

multi-mode fiber

62.5/125 µm Multi-mode fiber

Single-mode fiber

Transmission

Distance

500 m (1640 ft)

220 m (722 ft)

10 km (6 mi)

40 km (25 mi)

70 km (43.5 mi)

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

3C16873

1 Ethernet port

2 Ethernet port LEDs

16 CHAPTER 1: SWITCH 7750 COMPONENTS

Ta bl e 15 describes the 4-port 10/100/1000BASE-T submodule LEDs.

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

LED Description

LINK Off — The link is not operating.

ACT Off — No data is being transmitted.

Ta bl e 16 lists specifications of the 4-port 10/100/1000BASE-T submodule.

Ta bl e 16 4-Port 10/100/1000BASE-T Submodule Specifications

Specification Description

Connector type RJ-45

Number of ports 4

Port speed 1000 Mbps full duplex

Cable and maximum transmission distance

On — The link is operating normally.

Green flashing — Data is being transmitted.

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

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

See “Electrical Port Connector” on page 68 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-T Auto-sensing FE Module (3C16860)

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

■ 24-port 100BASE-FX MMF FE Module (3C16861)

■ 20-Port 10/100/1000BASE-T Module (3C16863)

■ 20-Port 1000BASE-X-SFP Module (3C16862)

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

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

■ 1-Port 10GBASE-R-XENPAK Module (3C16875)

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.

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

I/O module

I/O Modules 17

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

3C16891

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

3C16891

1 Ethernet port

2 Ethernet port LED

Ta bl e 23 describes the 48-port 10/100BASE-T FE PoE Module LEDs.

Ta bl e 17 module LED

LED Description

LINK/ACT Green — The port is connected

Off — The port is not connected Green flashing — Data is being transmitted

Ta bl e 24 describes the specifications for the 48-port 10/100BASE-T FE PoE module.

Ta bl e 18 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

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

Cables and maximum transmission distance

100 m (328 ft.)

18 CHAPTER 1: SWITCH 7750 COMPONENTS

Table 18 Specifications for the 48-port 10/100BASE-T FE PoE Module (continued)

Specification Description

Maximum power each port provides

Compliance IEEE802.3

15.4 W

IEEE802.3u IEEE802.3x IEEE802.3ad IEEE802.1p IEEE802.1D IEEE802.1Q IEEE802.1X IEEE802.1s IEEE802.1w IEEE802.3af

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

3C16890

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

3C16890

1 Ethernet port

2 Ethernet port LED

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

Ta bl e 19 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

I/O Modules 19

Ta bl e 24 describes the specifications of the 48-port 10/100/1000BASE-T PoE module.

Ta bl e 20 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

Compliance IEEE802.3ab

Category 5 twisted pair with a maximum distance of 100 m (328 ft.)

IEEE802.3 IEEE802.3i IEEE802.3x IEEE802.1p IEEE802.1D IEEE802.1Q IEEE802.1X IEEE802.1s IEEE802.1w

48-port 10/100BASE-T

Auto-sensing FE Module

The 48-port 10/100BASE-T Auto-sensing FE module provides 48 external 100Mbps Ethernet electrical ports.

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

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

Figure 11 illustrates the front panel and LEDs of the 48-port 10/100BASE-T Auto-sensing FE module.

20 CHAPTER 1: SWITCH 7750 COMPONENTS

Figure 11 Front Panel of the 48-Port 10/100BASE-T Auto-sensing 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 21 describes the 48-port 10/100BASE-T Auto-sensing FE module LED.

Ta bl e 21 48-Port 10/100BASE-T Auto-sensing FE module LED

LED Description

LINK/ACT Green — The port is connected

Ta bl e 22 describes the specifications of the 48-port 10/100BASE-T Auto-sensing FE module.

Off — The port is not connected Green flashing — Data is being transmitted

Ta bl e 22 Specifications for the 48-Port 10/100BASE-T Auto-sensing 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

Connector RJ-45

Number of ports 48

Port transmission speed

Cables and maximum transmission distance

Compliance IEEE802.3

55 W

10 Mbps half/full duplex 100 Mbps half/full duplex MDI/MDIX auto-sensing

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

IEEE802.3u IEEE802.3x

See “Electrical Port Connector” on page 68 for an illustration of the RJ-45 connector and MDI/MDI-X pinout details.

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.

I/O Modules 21

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

3C16888

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

3C16888

1 Ethernet port

2 Ethernet port LED

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

Ta bl e 23 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

Ta bl e 24 describes the specifications of the 48-port 10/100/1000BASE-T module.

Ta bl e 24 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

Compliance 1EEE 802.3ab

Category 5 twisted pair with a maximum transmission distance of 100 m (328 ft.)

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

22 CHAPTER 1: SWITCH 7750 COMPONENTS

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

Figure 14 24-Port 100BASE-FX MMF FE Module

Each 100 Mbps optical port has a green LED, as shown in Figure 15.

Figure 15 Front Panel of the 24-Port 100BASE-FX MMF FE Module

1 Ethernet port

2 Ethernet port LED

Ta bl e 25 describes the status of the 24-port 100BASE-FX MMF FE module LEDs.

Ta bl e 25 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.

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 26 describes the specifications of the 24-port 100BASE-FX MMF FE module.

Ta bl e 26 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

I/O Modules 23

3C16863

Table 26 Specifications for the 24-Port 100BASE-FX MMF FE Module (continued)

Specification Description

Connector type MT-RJ

Number of ports 24

Port transmission speed 100 Mbps, full-duplex

Cables and maximum transmission distance

Compliance IEEE 802.3

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

IEEE 802.3i

IEEE 802.3u IEEE 802.3x

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

Figure 16 20-Port 10/100/1000BASE-T Module

Figure 17 illustrates the front panel of the 20-port 10/100/1000BASE-T module.

Figure 17 Front Panel of the 20-Port 10/100/1000BASE-T Module

3C16863

1 Ethernet port

2 Ethernet port LED

Ta bl e 27 describes the 20-port 10/100/1000BASE-T module LEDs.

Ta bl e 27 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 data

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