Cisco 3750-48TS - Catalyst Switch - Stackable Guide d'installation Page 115
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4-5
Catalyst 3750 Switch Hardware Installation Guide
78-15136-02
Chapter 4 Troubleshooting
Diagnosing Problems
No connectivity Incorrect or bad cable
These are results of no link at both
ends:
• A crossover cable was used
when a straight-through was
required, or vice-versa.
• The cable is wired incorrectly.
• A crossover or straight-through
cable is wired incorrectly.
• STP checking for possible
loops.
• For the correct pinouts and
the proper application of
crossover vs.
straight-through cables, see
the “Two Twisted-Pair
Cable Pinouts” section on
page B-6.
• Replace with a tested good
cable.
• For 1000BASE-T
connections, be sure to use
a twisted four-pair,
Category 5 cable.
• Wait 30 seconds for the port
LED to turn green.
Unreadable characters on the
management console
Incorrect baud rate. Reset the emulation software to
9600 baud.
Amber system LED
Fatal POST error detected. Contact Cisco Systems.
Table 4-1 Common Problems and Solutions (continued)
Symptom Possible Cause Resolution
- General Information 1
- Document Information 1
- Mailing Information 1
- BUSINESS REPLY MAIL 2
- Catalyst 3750 Switch 3
- Hardware Installation Guide 3
- CONTENTS 7
- 2 Product Overview 2-1 8
- 3 Switch Installation 3-1 8
- Contents 10
- 78-15136-02 10
- Warranty Terms 13
- Duration of Hardware Warranty 14
- Audience 17
- Conventions 18
- Varoitus 19
- Attention 19
- Related Publications 23
- Obtaining Documentation 23
- Cisco.com 24
- Documentation CD-ROM 24
- Ordering Documentation 24
- Documentation Feedback 25
- Cisco TAC Website 25
- Opening a TAC Case 26
- TAC Case Priority Definitions 26
- Using Express Setup 29
- Powering On the Switch 31
- Starting Express Setup 32
- Rerunning Express Setup 39
- Product Overview 41
- Features 42
- Front Panel Description 43
- 1 10/100/1000 ports 44
- 10/100 and 10/100/1000 Ports 46
- SFP Module Slots 47
- 2 3 4 5 6 7 81 48
- System LED 49
- Master LED 50
- Port LEDs and Modes 50
- Table 2-4 Port Mode LEDs 51
- Stack LED 52
- Rear Panel Description 54
- StackWise Ports 55
- Cisco RPS 300 56
- Cisco RPS 675 57
- Management Options 58
- Network Configurations 59
- Switch Installation 61
- Warnings 62
- Preparing for Installation 63
- EMC Regulatory Statements 64
- Class A Notice for Hungary 65
- Installation Guidelines 66
- Verifying Package Contents 67
- Verifying Switch Operation 68
- Planning the Stack 72
- Powering Considerations 73
- Cabling Considerations 74
- 0.5-meter StackWise Cable 76
- Installing the Switch 77
- Rack Mounting 78
- 1 Phillips flat-head screws 81
- DC INPUTS FOR REMOTE 83
- POWER SUPPLY 83
- SPECIFIED IN MANUAL 83
- +12v @17a 83
- 3750-48TS Switches 85
- Mounting the Switch in a Rack 88
- 1 Phillips machine screws 89
- Attaching the Cable Guide 90
- Wall Mounting 92
- Mounting the Switch on a Wall 94
- Table or Shelf Mounting 96
- Connecting to an SFP Module 106
- Where to Go Next 110
- Troubleshooting 111
- Diagnosing Problems 113
- Technical Specifications 119
- Connector Specifications 125
- 10/100 Ports 127
- SFP Module Ports 129
- Console Port 130
- 10/100 ports 131
- 10/100/1000 Ports 132
- Identifying a Crossover Cable 133
- Adapter Pinouts 134
- Signal DB-25 Pin Signal 135
- Cluster Management Suite 137
- Figure C-2 Switch Home Page 139
- Figure C-3 CMS Setup Report 140
- CMS Requirements 141
- Supported Java Plug-Ins 143
- Setup Program 145
- Methods for Accessing the CLI 146
- Taking Out What You Need 148
- 2 Power cord 152
- Connecting to a Power Source 153
- IP Settings 154
- Completing the Setup Program 155
- • CMS from your browser 157
- Translated Safety Warnings 159
- PWR675-AC-RPS-N1) 160
- Installation Warning 162
- Installation Instructions 163
- Jewelry Removal Warning 164
- Stacking the Chassis Warning 166
- Avvertenza 167
- Advarsel 167
- ¡Atención! 167
- Main Disconnecting Device 168
- Grounded Equipment Warning 169
- Overtemperature Warning 172
- ¡Advertencia! 173
- Varning! 173
- Product Disposal Warning 175
- Switch Installation Warning 183
- Restricted Area 185
- Waarschuwing 186
- Laser Beam Exposure 188
- Laser Radiation 189
- Numerics 191
- 4-1 to 4-5 197
- E-1 to E-31 197
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