Appendix B Using the ROM Monitor
Recovering Cisco IOS Software Images
Step 3 Enter the xmodem command and the name of the source file containing the Cisco IOS image:
rommon 1> xmodem filename
When the source file is found, messages similar to the following appear:
Do not start upload program yet...
File size | Checksum | File name |
2537948 bytes | (0x26b9dc) | c2600-i-mz.122-10.bin |
WARN: This operation will ERASE bootflash. If the xmodem download to bootflash fails, you will lose any good image you may already have in bootflash.
Invoke this application only for disaster recovery.
Do you wish to continue? [yes/no]:
Step 4 Enter yes to copy the Cisco IOS image into flash memory. Messages similar to the following appear:
Ready to receive file prog ...
Erasing flash at 0x3000000
program flash location 0x3000000
Transfer complete!
The router is now ready to boot from the Cisco IOS image. Enter the reset ROM monitor command to reboot the router.
Note If you have set the console speed to 115200, you may want to reset it to the previous speed or to the factory default speed (typically 9600 bps). See the “Configuration Register Commands” procedure on page B-7.
Copying an Image from a TFTP Server Using the tftpdnld Command
The tftpdnld command downloads a Cisco IOS software image from a remote server accessible from a FastEthernet, Ethernet, or Token Ring network interface on a Cisco 2600 series router (except Cisco 2691). The tftpdnld command downloads the Cisco IOS software image into flash memory using TFTP.
Restrictions on the tftpdnld Command
The following software restrictions apply when using the tftpdnld command:
•Ethernet and FastEthernet—Accepts and sends only Ethernet V2.0 data packets.
•Token Ring—Accepts and sends only Token Ring frames with IEEE802.3 SNAP frames. Does not support any frames with routing information fields (RIFs), limiting all use of the tftpdnld command to a TFTP server on the local ring. If the TFTP server resides off the local ring, you must establish a path to the server through a router or transparent bridge from the local ring.
Cisco 2600 Series Routers Hardware Installation Guide
Cisco 2600 Series Routers Hardware Installation Guide
Corporate Headquarters
Cisco 2600 Series Routers Hardware Installation Guide
N T E N T S
Iii
Serial DTE or DCE Devices
Initial Configuration Using the Setup Command Facility
Procedure for the tftpdnld Command Configuration Register
Objectives
Vii
Conventions
Audience
Organization
Chapter Title Description
Safety Warnings
Bewaar Deze Instructies
Warnung Wichtige Sicherheitshinweise
Avvertenza Importanti Istruzioni Sulla Sicurezza
Aviso Instruções Importantes DE Segurança
Guarde Estas Instruções
GEM Disse Anvisninger
Xii
Xiii
Related Documentation
Xiv
Cisco Product Document Title
Replacement, Repair, or Refund Policy for Hardware
Cisco 90-Day Limited Hardware Warranty Terms
Duration of Hardware Warranty
Xvi
Cisco.com
Obtaining Documentation
Documentation Feedback
Ordering Documentation
Cisco Technical Support Website
Submitting a Service Request
Obtaining Technical Assistance
Xviii
Definitions of Service Request Severity
Obtaining Additional Publications and Information
Xix
Preface Obtaining Additional Publications and Information
Hardware Features
Overview of Cisco 2600 Series Routers
Advanced
Cisco
Power
Reading the Front-Panel LEDs
PWR
RPS
Activity
SYS/RPS
Reading the Rear-Panel LEDs
ACT
Cisco 2613-Rear-Panel LEDs
Link
ACT
FDX
Modules, Interface Cards, and Memory
CF1
Interface Numbering
WAN and LAN Interface Numbering
11 Interface Numbering in Chassis with 1-RU Height
System Specifications
Description Specification
Voice Interface Numbering
Regulatory Compliance
Safety Recommendations
Safety with Electricity
Preventing Electrostatic Discharge Damage
General Site Requirements
Power Supply Considerations
Power Source Input Power Tolerance Limits
Site Environment
Installation Checklist
Site Configuration
Equipment Racks
Creating a Site Log
Task Verified by Date
Tools and Equipment for Installation and Maintenance
Inspecting the Router
Console and Auxiliary Port Considerations
Console Port Connections
Preparing to Connect to a Network
Auxiliary Port Connections
Ethernet Connections
Token Ring Connections
Configuring Serial Connections
Serial Connections
Serial DTE or DCE Devices
Signaling Standards Supported
Distance Limitations
Device Type Gender Typical Devices
EIA/TIA-232
Isdn BRI Connections
Asynchronous/Synchronous Serial Module Baud Rates
Distance EIA-530 Distance Rate bps Feet Meters
56-K/Switched-56-kbps DSU/CSU Connections
Low-Capacitance Cable
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Installing the Router
For WICs and VICs
Installing Modules, Interface Cards, and Power Supplies
For network modules
For AIMs
For internal power supplies
Setting Up the Chassis
Setting the Chassis on a Desktop
For external power supplies
Mounting the Chassis in a Rack
Right
To the other side of the chassis. Brackets for 19-inch rack
Brackets for 19-inch rack
To the other side of the chassis
Attaching the Brackets to a Router of 2-RU Height
Use two screws on each side For 19-inch rack Right bracket
Installing the Router in a Rack
V0 EN
Mounting the Chassis on the Wall
Attaching Rubber Feet to the Router
Attaching Wall-Mount Brackets to the Router
Mounting the Router on the Wall
16 Attaching the Wall-Mount Brackets
Installing the Chassis Ground Connection
17 Mounting the Chassis on the Wall
Ring terminal
Power Connections
Connecting Routers to AC Power
Router DC Input DC Input Wire Size1
Connecting Routers to a DC-Input Power Supply
DC Wiring Requirements
15A, 120VAC 10A, 240VAC. Statement
Wiring Procedure for DC Input
Ports and Cabling
Connecting WAN, LAN, and Voice Cables
Connecting Routers to the Cisco Redundant Power System
Port or Connection Port Type, Color Connected To Cable
LAN, WAN, and Voice Connection Procedures
Connecting to a Console Terminal or Modem
Connecting to the Console Port
Connecting to the Auxiliary Port
23 Connecting to a Console Terminal
24 Connecting a Modem to the Auxiliary Port
Identifying a Rollover Cable
Front Panel Indicators
Powering Up the Router
Checklist for Power Up
Routers with 1-RU Chassis Height
Power-Up Procedure
Routers with 2-RU Chassis Height
Configuring the Router
Initial Configuration Using SDM
Initial Configuration Using the Setup Command Facility
Enter a hostname for the router this example uses
Initial Configuration Using the CLI Manual Configuration
Configuration is displayed
To proceed with manual configuration using the CLI, enter no
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Troubleshooting
Isolating Problems
Troubleshooting the Power and Cooling Systems
Environmental Reporting Features
Troubleshooting Modules, Cables, and Connections
Recovering a Lost Password
System Messages
Cisco Technical Assistance Center
Using the ROM Monitor
Entering ROM Monitor Mode
ROM Monitor Commands
Enter ROM Monitor Mode by Using the reload Command
ROM Monitor Command Syntax Conventions
Command abc
ROM Monitor Command Descriptions
Router Management Commands
Boot Commands in the ROM Monitor
Informational Commands in the ROM Monitor
Debugging Commands
Other Useful ROM Monitor Commands
Configuration Register Commands
Modifying the Configuration Register in Menu Mode
Recovering Cisco IOS Software Images
Modifying the Configuration Register by Hexidecimal Entry
Procedure for the xmodem Command
Copying an Image from the Console Using the xmodem Command
Description and Options of the xmodem Command
Console Requirements
Restrictions on the tftpdnld Command
Procedure for the tftpdnld Command
Specify the required variables, for example
DEFAULTGATEWAY=172.16.19.1
Configuration Register Settings
Bit Number Hexadecimal Meaning
Nvram
Changing Configuration Register Settings
Configuring the Boot Field
Boot Field Meaning
Bit Address net host
Enabling Booting from Flash Memory
Baud Bit
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Numerics
IN-1
Dram
IN-2
Link LED
Isdn BRI
LAN
IN-3
Sdram
IN-4
IN-5
IN-6