3com 3C17300 Owner's Manual Page 26
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26 CHAPTER 2: INSTALLING THE SWITCH
port, you need a cross-over cable. Many ports on workstations and
servers are configured as MDI (straight-through). If you want to make a
connection to an MDI port, you need to use a standard straight-through
cable. See Table 7
.
3Com recommends that you use Category 5 twisted pair cable — the
maximum segment length for this type of cable is 100 m (328 ft).
CAUTION: If you want to install the Switch using a Category 5E or
Category 6 cable, 3Com recommends that you briefly connect the cable
to a grounded port before connecting network equipment. If you do not,
the cables Electrostatic Discharge (ESD) may damage the Switch's port.
You can create a grounded port by connecting all wires at one end of a
UTP cable to an earth ground point, and the other end to a female RJ-45
connector located, for example, on a Switch rack or patch panel. The
RJ-45 connector is now a grounded port.
Table 7 Cables required to connect the Switch 4200 Series to other devices if
auto-negotiation is disabled
Choosing the correct
Fiber cables
Choose from the following cable options:
■ The 1000BASE-SX ports can be connected to multimode fiber cables
only.
■ The 1000BASE-LX and LH70 GBIC ports use multimode or
single-mode fiber optic cables.
For detailed information on fiber cable specifications, refer to the
SuperStack 3 Implementation Guide that accompanies your Switch.
If you wish to connect a 1000BASE-SX MT-RJ port to a fiber port with a
different type of connector, for example, SC or ST please contact your
network supplier for a suitable patch cable.
Cross-over Cable Straight-through Cable
Switch to Switch
(MDIX to MDIX)
✓
✕
Switch to Hub
(MDIX to MDIX)
✓
✕
Switch to PC (NIC)
(MDIX to MDI)
✕
✓
DUA1730-0AAA02.book Page 26 Thursday, January 23, 2003 12:28 PM
- SuperStack 1
- Switch 4200 Series 1
- Getting Started Guide 1
- 3Com Corporation 2
- 5400 Bayfront Plaza 2
- Santa Clara, California 2
- 95052-8145 2
- CONTENTS 3
- 3 SETTING UP FOR MANAGEMENT 4
- 4 PROBLEM SOLVING 4
- A SAFETY INFORMATION 5
- B PIN-OUTS 5
- C TECHNICAL SPECIFICATIONS 5
- D TECHNICAL SUPPORT 5
- REGULATORY NOTICES 6
- ABOUT THIS GUIDE 7
- Table 1 Notice Icons 8
- Table 2 Text Conventions 8
- Related 9
- Product 10
- Registration 10
- Documentation 10
- Comments 10
- INTRODUCING THE 11
- SUPERSTACK 3 SWITCH 4200 11
- About the Switch 12
- 4200 Series 12
- — Front View 13
- Table 4 LED behavior 15
- — Rear View Detail 17
- Table 5 Default Settings 18
- INSTALLING THE SWITCH 19
- Choosing a Suitable 20
- Rack-mounting 21 21
- Placing Units On 23
- Top of Each Other 23
- The Power-up 24
- Sequence 24
- The Power-up Sequence 25 25
- Color State 25
- GBIC Operation 27 27
- ■ Fiber SC connector 28
- GBIC Ports 29
- Transceiver 29
- SETTING UP FOR MANAGEMENT 31
- Setting Up 32
- Overview 32
- Setting Up Overview 33 33
- Manually 35
- Configuring IP 35
- Information 35
- ■ IP address — 169.254.100.99 36
- ■ Subnet mask — 255.255.0.0 36
- ■ A suitable cable: 39
- ■ 19,200 baud 40
- ■ 8 data bits 40
- ■ no parity 40
- ■ 1 stop bit 40
- ■ no hardware flow control 40
- Viewing 42
- Automatically 42
- Configured IP 42
- Methods of 45
- Managing a Switch 45
- Command Line 47
- Interface 47
- Management 47
- ✓ ✓ ✓ ✓ ✓ ✓ 48
- ✕ ✓ ✓ ✓ ✓ ✕ 48
- ✓ ✓ ✓ ✓ ✓ ✕ 48
- Setting Up SNMP 49
- Default Users and 50
- Passwords 50
- Switch CD-ROM 51
- PROBLEM SOLVING 53
- Solving Problems 54
- Indicated by LEDs 54
- Solving Hardware 55
- Problems 55
- Solving 55
- Communication 55
- Solving Stack 56
- Formation 56
- Solving Software 57
- Upgrade Problems 57
- 58 CHAPTER 4: PROBLEM SOLVING 58
- SAFETY INFORMATION 59
- Important Safety Information 60
- PPENDIX A: SAFETY INFORMATION 62
- PIN-OUTS 67
- RJ-45 Pin 68
- Assignments 68
- 1000BASE-T RJ-45 69
- Pin Assignments 69
- Table 13 Pin assignments 70
- TECHNICAL SPECIFICATIONS 71
- Switch 4250T 73
- (3C17302) 73
- Switch 4228G 74
- (3C17304) 74
- TECHNICAL SUPPORT 75
- Network Supplier 76
- Support from Your 76
- ■ Diagnostic error messages 77
- Asia, Pacific Rim 78
- Returning Products 79
- PPENDIX D: TECHNICAL SUPPORT 80
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