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Glossary

B-11

upstream

Refers to the relative position of a station in a network to another

station in the same network. A station is upstream from its

neighbor if it receives data before its neighbor receives the data.

WAN (wide area network)

A communication network that spans a large geographic area.

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SmartSTACK 100 1
ELS100-16TX 1
USER GUIDE 1
FCC NOTICE 3
DECLARATION OF CONFORMITY 6
CONTENTS 7
APPENDIX B GLOSSARY 9
Contents 10
CHAPTER 1 11
INTRODUCTION 11
1.1 ABOUT THIS MANUAL 11
1.2 GETTING HELP 12
1.3 DOCUMENT CONVENTIONS 13
1.4 RELATED DOCUMENTATION 14
1.5 OVERVIEW 15
Introduction 16
Port Trunking 18
Autonegotiation 18
Store and Forward Switching 19
Discarding Local Trafﬁc 19
Spanning Tree Algorithm 20
Applications 22
Virtual Workgroups 24
1.6 LOCAL CONSOLE MANAGER 27
1.6.2 Basic LCM Commands 29
Exit or Logout 31
LED State Meaning 35
2.2 INSTALLING AN EPIM 36
EPIM-100FX 37
Rack-Mounting an ELS100-16TX 38
Screws (4) 39
19-Inch Rack 39
SEQUENCE 40
2.6.1 Connecting UTP Cables 42
Figure 2-7. EPIM-100FX Port 45
CHAPTER 3 47
CONFIGURING YOUR ELS100-16TX 47
3.1 ASSIGNING IP ADDRESSES 48
Conﬁguring Your ELS100-16TX 49
3.1.2 Deleting an IP Address 50
3.1.3 Changing a Subnet Mask 50
3.2 ENABLING BRIDGING 51
3.3 DISABLING BRIDGING 52
3.5 ENABLING TRUNKING 53
Trunk Groups 54
3.6 DISABLING TRUNKING 56
3.8 ENABLING PORT MIRRORING 59
3.9 DISABLING MIRRORING 59
PROTECTION 65
3.14 MODIFYING MIB VARIABLES 66
3.15 SYSTEM CONTACT 66
3.16 SYSTEM NAME 67
3.16.1 System Location 67
3.16.2 Community Names 67
Set Community Name 68
3.16.3 Aging Parameter 68
CHAPTER 4 69
MONITORING AND MANAGING 69
YOUR ELS100-16TX 69
4.2 ELS100-16TX STATISTICS 69
4.2.1 Gathering Statistics 70
4.2.2 System Statistics 70
4.3.1 Displaying Status 72
Address Type Port 75
Age(secs) 75
4.4 MANAGING THE ELS100-16TX 77
4.5.1 Disabling a Port 78
4.5.2 Enabling a Port 78
4.5.3 Changing a Subnet Mask 79
SNMP sets 80
4.5.5 Setting the Baud Rate 81
4.5.6 Setting a Reboot Time 82
CHAPTER 5 83
5.1 POWER-UP DIAGNOSTICS 83
5.1.1 Power-up LED Sequence 83
5.1.2 Speciﬁc Power-up Tests 84
5.4 TROUBLESHOOTING 88
5.5.1 Connectivity Problems 89
Diagnostic LEDs 92
Standard Support 92
Address Table Size 93
Management Support 93
Regulatory Compliance 93
Technical Speciﬁcations 94
A.4 STRAIGHT-THROUGH WIRING 95
A.5 CROSSOVER WIRING 95
A.6 THE 5 - 4 - 3 RULE 96
APPENDIX B 99
GLOSSARY 99
Glossary 100

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