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New Member

Cisco 2600: device does not contain a valid magic number

When I boot up my Cisco 2600 router I get the following:

System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)

Copyright (c) 1999 by cisco Systems, Inc.

TAC:Home:SW:IOS:Specials for info

Testing lower main memory - data equals address

Testing lower main memory - checkerboard

Testing lower main memory - inverse checkerboard

Clearing lower 4K memory for cache initialization

Clearing bss

Reading monitor variables from NVRAM

Enabling interrupts

Enabling instruction cache

Reading cookie

Initializing main memory

Sizing NVRAM

Initializing PCI subsystem

Exiting init

C2600 platform with 24576 Kbytes of main memory

rommon 1 >

What can I do to resolve this issue?

  • Other Network Infrastructure Subjects
8 REPLIES
New Member

Re: Cisco 2600: device does not contain a valid magic number

...

New Member

Re: Cisco 2600: device does not contain a valid magic number

Follow the steps illustrated on this page.

http://www.cisco.com/warp/public/130/recovery_c2600.html

Good Luck!!

New Member

Re: Cisco 2600: device does not contain a valid magic number

I tried this:

rommon 1 > tftpdnld

Missing or illegal ip address for variable IP_ADDRESS

Illegal IP address.

usage: tftpdnld [-r]

Use this command for disaster recovery only to recover an image via TFTP.

Monitor variables are used to set up parameters for the transfer.

(Syntax: "VARIABLE_NAME=value" and use "set" to show current variables.)

"ctrl-c" or "break" stops the transfer before flash erase begins.

The following variables are REQUIRED to be set for tftpdnld:

IP_ADDRESS: The IP address for this unit

IP_SUBNET_MASK: The subnet mask for this unit

DEFAULT_GATEWAY: The default gateway for this unit

TFTP_SERVER: The IP address of the server to fetch from

TFTP_FILE: The filename to fetch

The following variables are OPTIONAL:

TFTP_VERBOSE: Print setting. 0=quiet, 1=progress(default), 2=verbose

TFTP_RETRY_COUNT: Retry count for ARP and TFTP (default=7)

TFTP_TIMEOUT: Overall timeout of operation in seconds (default=7200)

TFTP_CHECKSUM: Perform checksum test on image, 0=no, 1=yes (default=1)

FE_SPEED_MODE: 0=10/hdx, 1=10/fdx, 2=100/hdx, 3=100/fdx, 4=Auto(deflt)

Command line options:

-r: do not write flash, load to DRAM only and launch image

rommon 2 > ip_address=192.168.1.1

rommon 3 > ip_subnet_mask=255.255.255.0

rommon 4 > default_gateway=192.168.1.254

rommon 5 > tftp_server=192.168.1.100

rommon 6 > tftp_file=/tftp/aaa1321.bin

rommon 7 > tftpdnld

Missing or illegal ip address for variable IP_ADDRESS

Illegal IP address.

Was that the correct steps?

New Member

Re: Cisco 2600: device does not contain a valid magic number

And if I try this:

rommon 1 > dir flash:

device does not contain a valid magic number

dir: cannot open device "flash:"

rommon 2 >

Does this help explain the issue?

New Member

Re: Cisco 2600: device does not contain a valid magic number

Bob, did you overcome this problem?....as I've got exactly the same problem at the moment

New Member

Re: Cisco 2600: device does not contain a valid magic number

No, I have had no luck. I bought new RAM and FLASH, and still the same issue. Now I am no longer able to console or hyperterm into the router. Lots of problems and no answers. Let me know if you get any help.

New Member

Re: Cisco 2600: device does not contain a valid magic number

In order to download IOS from rommon you need to first set the variables. Type "set" and rommon will return the current settings. Then set the values that you need. It is case sensitive. Example:

IP_ADDRESS=192.168.1.1

IP_SUBNET_MASK=255.255.255.0

DEFAULT_GATEWAY=192.168.1.254

TFTP_SERVER=192.168.1.100

TFTP_FILE=/tftp/aaa1321.bin

set (to view and double check your input)

tftpdnld

This should work. Good luck!

New Member

Re: Cisco 2600: device does not contain a valid magic number

Try uploading an image over x-modem using the console.

http://www.cisco.com/warp/public/130/xmodem_generic.html

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