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3C16895 7-slot Chassis, 3C16894 4-slot Chassis Chapter B Obtaining Support For Your Switch
Models:
3C16894 4-slot Chassis
3C16897 8-slot DC Chassis
3C16895 7-slot Chassis
3C16896 8 slot AC Chassis
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Troubleshooting
Specs
Install
Configuring Power
Connecting DC Power To connect DC power cords, do the following
Reset Button
Fan Assembly
Setting Terminal
Checklist
Temperature and Humidity
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C
HAPTER
B: O
BTAINING
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UPPORT FOR YOUR
S
WITCH
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Contents
3C16896 8-slot AC Chassis 3C16897 8-slot DC Chassis
3Com Family Switch 7750 Installation Guide
3C16895 7-slot Chassis 3C16894 4-slot Chassis and associated modules
3Com Corporation
350 Campus Drive
Marlborough, MA
01752-3064
CONTENTS
SWITCH 7750 COMPONENTS
INSTALLING THE SWITCH
CONFIGURING THE SWITCH
TROUBLESHOOTING
OBTAINING SUPPORT FOR YOUR SWITCH
MAINTAINING SOFTWARE
MAINTAINING HARDWARE
ABOUT THIS GUIDE
Conventions
Related
Documentation
6 ABOUT THIS GUIDE
Switch Chassis
SWITCH 7750 COMPONENTS
Switch Backplane
Fabric Module
Table 3 lists Fabric specifications
Table 3 Fabric Specifications
Figure 3 illustrates the front panel of the Fabric
Figure 3 Fabric
Compact Flash CF Port
1000BASE-X-SFP Ports
Console Port
Ethernet Port
Power LEDs
Reset Button
Fabric 32 Submodules
Module LEDs
4-Port 10/100/1000BASE-T Submodule
12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFP Module 3C168916
I/O Modules
12-port 1000BASE-X SFP and 4-port 10/100/1000BASE-T Module 3C186917
Figure 12illustrates the 48-port 10/100BASE-T FE PoE module
48-port 10/100/1000BASE-T PoE Module
Table 22 describes the 48-port 10/100/1000BASE-T PoE module LEDs
Table 21 Specifications for the 48-Port 10/100BASE-TX FE Module
Cables and maximum
Cables are 2 100-ohm Category-5 twisted pairs up to 100 m 300 ft
transmission distance
Module
Figure 15 Front Panel of the 48-port 48-port 100BASE-X SFP Module
Table 26 lists the cables for the 48-port 100BASE-X SFP ports
Each 100 Mbps optical port has a green LED, as shown in Figure
Module
Figure 18 illustrates the 20-Port 10/100/1000BASE-T Module
Table 30 lists specifications of the 20-port 10/100/1000BASE-T module
12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFP Module
26 CHAPTER 1 SWITCH 7750 COMPONENTS
3C168916
12-port 1000BASE-X SFP and 4-port
Figure 24 12-port 1000BASE-X SFP and 4-port 10/100/1000BASE-T Module
Table 38 lists the cables for the 1000BASE-X SFP ports
Figure 26 8-Port 1000BASE-X GBIC Module
Module
Figure 28 illustrates the 8-port 10/100/1000BASE-T GE module
Table 42 describes the LEDs on the 8-port 10/100/1000BASE-T GE module
Power Module
Power Distribution
External PoE Power
System
Fan Assembly
Switch 7750 Specifications
Table 46 provides detailed information about features of the Switch
Figure 31 Fan Assembly
Table 46 Specifications for the Switch 7750 System
Table 46 Specifications for the Switch 7750 System continued
36 CHAPTER 1 SWITCH 7750 COMPONENTS
Preparing to Install
INSTALLING THE SWITCH
General Safety Recommendations
Electrical Safety
Moving the Switch
Laser Safety
Temperature and Humidity
Electromagnetic Discharge
Static Electricity
Lightning Damage
Installing the Cabling
Rack
Cabinet
Workbench
Installing a
Installing a Module
Submodule
Connecting the
Ground Wire
Connecting and
Configuring Power
Connecting DC Power To connect DC power cords, do the following
Cords
Figure 34 Back of the PoE Rack
Power Cord
Figure 35 Front Panel of the PoE Rack
Assembly
Installing the Fan
Installing Cables
Connecting Optical Fiber Cables
Cables Connecting Electrical Port Cables
SC fiber connector
Installing Cabling
MT-RJ fiber connector
Post-installation
Checklist
Installation Checklist
operates correctly
CONFIGURING THE SWITCH
Configuring the
Switch 7750 and a
Setting Terminal
Baud rate = Databit = Parity check = none Stopbit =
7 Select VT100 in the Emulation dropdown menu 8 Click OK
Booting the Switch
Before powering on the Switch 7750, verify that
Power cords have been properly connected
The voltage of power supply can meet the requirements on the switch
Booting the Switch 7750
Please check LEDs
You can now begin the configuration for the Switch
3Com
MAINTAINING SOFTWARE
The terminal displays the following information
Downloading an Application to Flash Memory
Selecting the Application File for the Boot
7 Type Y to run the primary image
60 CHAPTER 4 MAINTAINING SOFTWARE
2 Enter 3 in the download program menu
11 Change the protocol name for the download to Xmodem
Lost Passwords
the 8-slot Chassis
Press Ctrl+B. The system displays
Using the BOOT Menu
66 CHAPTER 4 MAINTAINING SOFTWARE
TROUBLESHOOTING
Troubleshooting the
Configuration
Troubleshooting
Troubleshooting the Fan
Modules
Troubleshooting the
Table 50 describes power LEDs on the Fabric. continued
Replacing a Power Module
MAINTAINING HARDWARE
Module
Module
Replacing a Power Supply
70 CHAPTER 6 MAINTAINING HARDWARE
Assembly
Replacing the Fan
Replacing I/O Modules To replace an I/O module, you need
72 CHAPTER 6 MAINTAINING HARDWARE
OBTAINING SUPPORT FOR YOUR B SWITCH
to Gain Service
Services
Access Software
Telephone Technical
Contact Us
Support and Repair
http//lat.3com.com/lat/support/form.html
http//lat.3com.com/br/support/form.html
latsupportanc@3com.com
Telephone Technical Support and Repair
76 CHAPTER B OBTAINING SUPPORT FOR YOUR SWITCH
SWITCH 7750 CABLES
Console Cable
AUX Cable
This appendix covers the following types of cables and connectors
Connector
Electrical Port
Figure 46 illustrates the RJ-45 connector
Figure 46 The RJ-45 Connector
Connectors
Figure 47 SC Optical Fiber Connector
Table 56 lists RJ-45 MDI-X Port Pin-outs
Table 56 RJ-45 MDI-X Port Pinouts
Figure 48. illustrates the MT-RJ fiber optic cable connector
Figure 49 illustrates the LC connector
Figure 48 The MT-RJ Fiber Connector
Figure 49 LC Connector