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Obtaining Software . . . . . . . . . . . . . . . . . . . . . . . 89
Troubleshooting in a Network
. . . . . . . . . . . . . . . . . . . 89
Start of Troubleshooting Process . . . . . . . . . . . . . . . . . . 89
Choosing a Troubleshooting Procedure . . . . . . . . . . . . . . . . 90
Procedure A . . . . . . . . . . . . . . . . . . . . . . . . . 90
Procedure B . . . . . . . . . . . . . . . . . . . . . . . . . 90
Procedure C . . . . . . . . . . . . . . . . . . . . . . . . . 91
Procedure D . . . . . . . . . . . . . . . . . . . . . . . . . 91
Procedure E . . . . . . . . . . . . . . . . . . . . . . . . . 92
Obtaining Service . . . . . . . . . . . . . . . . . . . . . . . . 92
Appendix A. Safety Information . . . . . . . . . . . . . . . . . . 93
Reference to Safety Booklet . . . . . . . . . . . . . . . . . . . . 93
Safety Notice
. . . . . . . . . . . . . . . . . . . . . . . . . 97
Appendix B. Notices . . . . . . . . . . . . . . . . . . . . . . 103
Electronic Emission Notices. . . . . . . . . . . . . . . . . . . . 104
Federal Communications Commission (FCC) Statement . . . . . . . . 104
Industry Canada Class A Emission Compliance Statement . . . . . . . 104
Avis de conformité aux normes d’Industrie Canada . . . . . . . . . . 104
European Norm (EN) Statement . . . . . . . . . . . . . . . . . 104
Japanese Voluntary Control Council for Interference (VCCI) Statement
Korean Communications Statement . . . . . . . . . . . . . . . . 105
Power line harmonics compliance
. . . . . . . . . . . . . . . . 106
Taiwanese Class A Warning Statement
. . . . . . . . . . . . . . 106
Class 1 Laser Statement . . . . . . . . . . . . . . . . . . . . . 106
Class 1 LED Statement . . . . . . . . . . . . . . . . . . . . . 106
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . 107
Straight-Through 10BASE-T/100BASE-TX Cables for STP . . . . . . . . 109
Crossover 10BASE-T/100BASE-TX Cables . . . . . . . . . . . . . . 110
Crossover 10BASE-T/100BASE-TX Cables for STP . . . . . . . . . . . 110
EIA-232 Port . . . . . . . . . . . . . . . . . . . . . . . . . 111
Null-Modem Cables . . . . . . . . . . . . . . . . . . . . . . . 112
Appendix D. Interface Conventions for the Console. . . . . . . . . . 113
Appendix E. Introduction to Virtual LANs (VLANs) . . . . . . . . . . 117
Virtual LANs
. . . . . . . . . . . . . . . . . . . . . . . . . 117
. . . . . . . . . . . . . . . 117
How VLANs provide extra security . . . . . . . . . . . . . . . . 117
VLANs and the switch . . . . . . . . . . . . . . . . . . . . . 118
Priority and traffic classes
. . . . . . . . . . . . . . . . . . . 118
Overview of IEEE 820.1Q VLAN support . . . . . . . . . . . . . . 119
Configuration examples . . . . . . . . . . . . . . . . . . . . 120
Using unique MAC addresses . . . . . . . . . . . . . . . . . . 123
Duplicate VLAN configurations and oversubscription of switch resources
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
. . . . . . . . . . . . . . . . . . . . . . . . . . 133
Contents
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