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Maintaining the Cisco 2524 and Cisco 2525 Routers A-23
Virtual Configuration Register Settings
In the following example, the virtual configuration register is set to boot the router from
Flash memory and to ignore Break at the next reboot of the router:
router> enable
password:
enablepassword
router# conf term
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z
config-register 0x102
boot system flash [
filename
]
^Z
router#
The router creates a default boot filename as part of the automatic configuration processes.
The boot filename consists of cisco, plug the octal equivalent of the boot field number, a
hyphen, and the processor type.
Note A boot system configuration command in the router configuration in NVRAM
overrides the default boot filename.
cisco6-igs 0 1 1 0
cisco7-igs 0 1 1 1
cisco10-igs 1 0 0 0
cisco11-igs 1 0 0 1
cisco12-igs 1 0 1 0
cisco13-igs 1 0 1 1
cisco14-igs 1 1 0 0
cisco15-igs 1 1 0 1
cisco16-igs 1 1 1 0
cisco17-igs 1 1 1 1
Action or Filename Bit 3 Bit 2 Bit 1 Bit 0
- About This Guide 1
- Document Organization 2
- Document Conventions 3
- Safety Warnings.”) 4
- Overview of the Cisco 2524 5
- Features 10
- Specifications 11
- FCC Part 68 13
- Preparing to Install the 15
- Cisco 2524 and Cisco 2525 15
- Safety Recommendations 16
- Site Environment 18
- Preventive Site Configuration 18
- Configuring Equipment Racks 19
- Power Supply Considerations 19
- Installation Checklist 20
- Creating a Site Log 22
- 1. kHz = kilohertz 23
- ISDN Connections 26
- 1. nF = nanoFarad 27
- Ethernet Connections 29
- Token Ring Connections 29
- Console Port Connections 30
- Auxiliary Port Connections 30
- Inspecting the System 31
- Installing the Cisco 2524 and 33
- Required Tools and Parts 34
- Setting Up the Chassis 35
- Rack-Mounting the Chassis 36
- Attaching the Brackets 37
- Figure 3-6 or Figure 3-7 38
- Figure 3-8 or Figure 3-9 39
- Installing in a Rack 40
- Wall-Mounting the Chassis 41
- SERIAL 1 42
- SERIAL 0 42
- DC Power Specifications 43
- Wiring the DC Power Supply 44
- Input: –40––72V 45
- Current: 1.5–1.0A 45
- Watts: 40W 45
- Connecting to the Network 46
- Connecting to a WAN 51
- Figure 3-20.) 52
- Figure 3-21.) 53
- Figure 3-22.) 54
- ACTIVITY 55
- Console port 59
- RJ-45 roll-over cable 59
- RJ-45-to-DB-25 adapter 59
- Configuring the Cisco 2524 and 63
- Configuring the Router 64
- Using Configuration Mode 65
- Using AutoInstall 66
- Configuring the Router 67
- Configuring ISDN 76
- Configuring Switched 56 78
- Configuring DDS 79
- Specifying the Boot Method 82
- Getting More Information 84
- Cabling Specifications for the 85
- Identifying a Roll-Over Cable 86
- Pin 1 and pin 8 87
- (labeled Terminal) 88
- (labeled Modem) 89
- Token Ring Port Pinouts 93
- RJ-48C jack 94
- EIA/TIA-232 97
- EIA/TIA-449 99
- <— indicates DCE to DTE 102
- APPENDIX 109
- Running Diagnostic Tests 111
- Getting Help 111
- Cisco 2525 Routers 113
- Installing WAN Modules 114
- Opening the Chassis 115
- Tools Required 116
- Removing the Chassis Cover 116
- Screw Slot 117
- Flat-blade screwdriver 117
- CODE0CODE1 118
- Upgrading the DRAM SIMM 119
- Tools and Equipment Required 121
- DRAM SIMM Installation 121
- System-Code SIMM Replacement 123
- Replacing the Cover 126
- Recovering Lost Passwords 127
- (Router#): 132
- > b [tftp] flash filename 134
- Translated Safety Warnings 141
- Product Disposal Warning 142
- Jewelry Removal Warning 143
- Ground Connection Warning 144
- Installation Warning 145
- TN Power Warning 146
- Circuit Breaker (15A) Warning 146
- SELV Circuit Warning 148
- ISDN Connection Warning 152
- Qualified Personnel Warning 154
- Restricted Area Warning 155
- DC Power Supply Warning 159
- DC Power Connection Warning 160
- Lightning Activity Warning 161
- Grounded Equipment Warning 162
- Power Supply Warning 164
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