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Chapter 6: FN10 Diagnostics and Troubleshooting

Page 6-8 Fast Network 10 User Guide

6.5.3 FN10 Has Rebooted

• Use the LCM ident command to check the FN10 diagnostic codes,

and call your authorized Cabletron Systems representative.

6.5.4 FN10 Does Not Respond to NMS

• Check the port status using LCM.

• Check to see if the Spanning Tree topology is stable using LCM.

• Check that a pathway to the FN10 exists.

• Verify the FN10’s IP address using LCM.

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FAST NETWORK 10 1
USER GUIDE 1
Fast Network 10 User Guide i 3
CONTENTS 7
FastNET 10 User Guide vii 9
Contents 10
CHAPTER 1 11
INTRODUCTION 11
1.2 GETTING HELP 12
1.3 DOCUMENT CONVENTIONS 13
1.4 RELATED DOCUMENTATION 14
1.5 OVERVIEW 14
Overview 15
1.5.1 FN10 Architecture 16
1.5.3 FN10 Filtering 20
1.5.4.1 FN10 Trunking 21
Chapter 1: Introduction 22
1.5.4.3 Virtual Workgroups 24
1.6 LOCAL CONSOLE MANAGER 25
Reference Card 26
1.6.2 Basic LCM Commands 27
1.6.2.1 Help 28
1.6.2.2 Erase 28
1.6.2.3 Exit 29
1.6.2.4 Logout 29
1.6.2.5 Traplog 29
CHAPTER 2 31
UNPACKING AND INSTALLING 31
YOUR FN10 31
Port B Port A 32
FN10 Panels 33
2.2 INSTALLING THE FN10 34
Installing the FN10 35
FN10 > prompt 37
ETHERNET MODULE 39
CHAPTER 3 43
CONFIGURING YOUR FN10 43
• Displaying trunking status 44
• Assigning a community name 44
3.1 ASSIGNING IP ADDRESSES 45
3.1.1 Displaying IP Addresses 46
3.1.2 Deleting an IP Address 46
3.1.3 Changing a Subnet Mask 46
3.2 ENABLING BRIDGING 47
3.3 DISABLING BRIDGING 48
3.5 ENABLING TRUNKING 49
Trunk Groups 50
3.6 DISABLING TRUNKING 51
FN10 > trunk 2-4 52
Displaying Trunking Status 53
Workgroup A 54
Workgroup B 54
Assigning a Community Name 57
RCM Reference Guide 58
3.11 MODIFYING MIB VARIABLES 59
3.11.1 System Contact 59
3.11.2 System Name 59
3.11.3 System Location 59
3.11.5 Aging Parameter 60
CHAPTER 4 61
MONITORING AND MANAGING 61
4.2.1 Pseudo Filters 63
4.2.2 Gathering Statistics 63
4.2.3 System Statistics 63
FN10 Statistics 65
4.2.5 MAC Statistics 66
4.2.7 SNMP Statistics 67
4.3.1 Displaying Status 69
4.4 MANAGING THE FN10 74
4.5.1 Disabling a Port 75
4.5.2 Enabling a Port 76
4.5.2.1 noRIP Option 76
4.5.3 Changing a Subnet Mask 77
4.5.5 Setting the Baud Rate 78
4.5.6 Setting a Reboot Time 79
CHAPTER 5 81
FN10 FILTERS 81
5.1.1 Source Address Filter 83
5.2 PORT FILTERS 84
5.2.1 Conﬁgurable Fields 85
5.2.1.1 Pseudo Filtering 86
5.2.1.2 Filter Links 86
Port Filters 87
Adjoining Network Segment 91
Computers that cannot 93
PERFORMANCE 96
LAN 4LAN 3 97
5.5 CONFIGURING A PORT FILTER 99
Chapter 5: FN10 Filters 100
Conﬁguring a Port Filter 101
5.5.1 Modifying a Port Filter 102
5.5.2 Deleting a Port Filter 103
CONSIDERATIONS 103
CHAPTER 6 105
6.1.1 Power-up LED Sequence 106
6.1.2 Speciﬁc Power-up Tests 106
6.3 DIAGNOSTIC LOOPBACK TESTS 107
6.3.1 Loopback Tests 108
123456 7 111089 109
Reset Ready 109
6.5 TROUBLESHOOTING 111
6.5.1 FN10 Does Not Power Up 111
6.5.2 Connectivity Problems 111
6.5.3 FN10 Has Rebooted 112
APPENDIX A 113
TECHNICAL SPECIFICATIONS 113
Bridging Technologies 114
Address Table Size 114
Management Support 114
Certiﬁcation 114
A.3 10BASE-T PIN ASSIGNMENTS 115
A.4 STRAIGHT-THROUGH WIRING 116
A.5 CROSSOVER WIRING 117
A.6 5 - 4 - 3 RULE 117
APPENDIX B 119
GLOSSARY 119
Appendix B: Glossary 120
Numerics 129

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