Cisco EF4116

To Next Page

To Previous Page

4-12 Cisco 4000 Series Hardware Installation and Maintenance

Reading Network Processor Module LED Indicators

CT1 Network Processor Module LED Indicators

The three LEDs on the CT1 network processor module are labeled loopback, local alarm, and remote

alarm. (See Figure 4-15.)

Figure 4-15 Channelized T1 Network Interface Processor

The three LEDs on the CT1 front panel indicate the following:

• Loopback—Indicates controller local loopback.

• Local alarm—Indicates a loss of signal, a loss of frame, or unavailability because of excessive

errors.

• Remote alarm—Indicates a remote alarm is received from the remote end because of a local

alarm at the remote end.

H3155

cT1/ PRI

LOOPBACK

LOCAL ALARM

REMOTE ALARM

DB-15

female

Main Page

Default Chapter5
- Table of Contents5
Figure 2-38 E1 Interface Cable for 120-Ohm, Balanced Connections (with Twinax Connectors)12
Figure 2-39 E1 Interface Cable for 120-Ohm, Balanced Connections (with RJ-45 Connector)12
- About this Manual15
Chapter 1 Cisco 4000 Series Overview19
- External Differences in Models of the Cisco 4000 Series19
- Figure 1-1 Cisco 4000 Series Chassis-Front Panel20
- Series Specifications20
- Memory Systems22
Chapter 2 Preparing for Installation23
- Safety Recommendations24
  - Safety with Electricity24
  - Preventing Electrostatic Discharge Damage25
- General Site Requirements25
  - Site Environment25
  - Site Configuration Precautions26
- Installation Checklist27
- Required Tools and Equipment28
- Site Log28
- Preparing to Make Connections29
- Console Port and Auxiliary Port Connection Considerations31
- Figure 2-14 EIA/TIA-449 Adapter Cable Connectors, Network End38
- Figure 2-19 Four-Port Serial Port Adapter Cables41
- Figure 2-23 Router Serial Cable Connections43
- Fiber Distributed Data Interface Connections47
Chapter 3 Installing the Router59
- Making Console Port Connections59
- Rack-Mount and Wall-Mount Procedures Overview59
- Making Network Connections60
  - Making Token Ring Connections60
- Making Ethernet Connections61
Chapter 4 Troubleshooting the Initial Hardware Configuration81
- Problem Solving81
  - Troubleshooting the Power and Cooling Systems82
  - Troubleshooting the Network Processor Modules and Cables82
- Environmental Reporting Features83
- Reading Front-Panel LED Indicators83
- Reading Network Processor Module LED Indicators84
  - Ethernet Network Processor Module LED Indicators84
  - FDDI Network Processor Module LED Indicators89
- Token Ring Network Processor Module LED Indicators85
- Four Port Serial Module Indicators86
- Dual Serial Network Processor Module LED Indicators87
Chapter 5 Maintaining and Upgrading the Router95
- Accessing the Router Internal Components95
  - Removing the Component Tray96
  - Memory Replacement Procedures100
- Removing Network Processor Modules98
- Figure 5-11 Removing the Boot Helper Flash Memory SIMM110
- Removing the Cisco 4500-M and Cisco 4700 Boot Helper Flash Memory SIMM110
- Installing Flash-Memory Simms111
Table B-1 Virtual Configuration Bit Meanings117
- Changing Configuration Register Settings118
- Configuring the Boot Field119
Appendix A Cabling Specifications A-1117
Appendix B Cisco 4000 Series Virtual Configuration Register117
- Virtual Configuration Register Settings117
Table B-2 Explanation of Boot Field (Configuration Register Bits 00-03119
Table B-3 Default Boot Filenames120
Table B-4 Configuration Register Settings for Broadcast Address Destination121
Table B-5 System Console Terminal Baud Rate Settings121
- Enabling Booting from Flash Memory122
Appendix C Cisco 4000-M ROM Monitor123
- Available ROM Monitor Commands124
- Entering the Cisco 4000-M ROM Monitor Program125
Table C-1 O Command Options125
Appendix D Cisco 4500-M and Cisco 4700 ROM Monitor127
- Entering the ROM Monitor Program127
Appendix E Operating Conditions for the United Kingdom133
- For United Kingdom Use Only133
Appendix F Operating Conditions for the European Community135

Table of Contents

Related product manuals