3com 3C17300 Owner's Manual Page 56
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56 CHAPTER 4: PROBLEM SOLVING
The IP address is split into two parts:
■ The first part (‘192.168.100’ in the example) identifies the network on
which the device resides
■ The second part (‘.8’ in the example) identifies the device within the
network
The natural subnet mask for this example is 255.255.255.0.
If your network has a connection to the external IP network, that is, you
access the Internet, you must apply for a registered IP address.
How do you obtain a registered IP Address?
The IP registration system ensures that every IP address used is unique; if
you do not have a registered IP address, you may be using an identical
address to someone else and your network will not operate correctly.
InterNIC Registration Services is the organization responsible for
supplying registered IP addresses. The following contact information is
correct at time of publication:
World Wide Web site: http://www.internic.net
If your IP network is internal to your organization only, that is, you do not
access the Internet, you may use any arbitrary IP address as long as it is
not being used by another device on your network. 3Com suggests you
use addresses in the series 192.160.100.X (where X is a number between
1 and 254) with a subnet mask of 255.255.255.0.
These suggested IP addresses are part of a group of IP addresses that
have been set aside specially for use ‘in house’ only.
Solving Stack
Formation
Problems
If you are having problems with correctly forming a stack, first ensure that
Spanning Tree is enabled. If it is enabled, do the following:
1 Power off all units in the stack.
2 Check all the cable connections in the stack.
3 Power on all units in the stack.
DUA1730-0AAA02.book Page 56 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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