Stuck in rommon

Answered Question
Jul 4th, 2007

Hi

I somehow managed to mess up the flash file name and now I am trying to recover the 2600 router using the ROM monitor software procedure - I am stuck in rommon mode.

Has anyone tried this ??

I have attached some outputs...

Thanks for helping.

John

Attachment: 
I have this problem too.
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Correct Answer by guruprasadr about 9 years 5 months ago

Hi John, [Pls Rate if Helps]

This message indicates that the bootflash file system is corrupted, or the IOS files are invalid/corrupted.

Format to Specify:

-------------------

rommon 16 > IP_ADDRESS=172.15.19.1

rommon 17 > IP_SUBNET_MASK=255.255.255.253

rommon 18 > DEFAULT_GATEWAY=172.15.19.2

rommon 19 > TFTP_SERVER=172.15.19.2

rommon 20 > TFTP_FILE=c2600-j1s3-mz.123-13a

rommon 21 > tftpdnld

INFO: Pls Note IP Address of TFTP Server & Default Gateway are same.Change accordingly. TFTP_FILE = Do not specify entire File Location (as in your output) & do not use the .bin extension during specification. Just specify the name of the File only in TFTP directory.

NOTE: All Variables are Case Sensitive. Don't Use Lower Case Format

IP_ADDRESS:

DEFAULT_GATEWAY:

IP_SUBNET_MASK:

TFTP_SERVER:

TFTP_FILE:

Finally, if Nothing worked out: TRY THIS:

1. Format the Flash card by using the erase nvram command.

2. Reload the IOS image.

3. Change the boot variable to point to the new image.

4. Reboot the device.

PLS Rate if HELPS

Best Regards,

Guru Prasad R

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Correct Answer
guruprasadr Wed, 07/04/2007 - 02:05

Hi John, [Pls Rate if Helps]

This message indicates that the bootflash file system is corrupted, or the IOS files are invalid/corrupted.

Format to Specify:

-------------------

rommon 16 > IP_ADDRESS=172.15.19.1

rommon 17 > IP_SUBNET_MASK=255.255.255.253

rommon 18 > DEFAULT_GATEWAY=172.15.19.2

rommon 19 > TFTP_SERVER=172.15.19.2

rommon 20 > TFTP_FILE=c2600-j1s3-mz.123-13a

rommon 21 > tftpdnld

INFO: Pls Note IP Address of TFTP Server & Default Gateway are same.Change accordingly. TFTP_FILE = Do not specify entire File Location (as in your output) & do not use the .bin extension during specification. Just specify the name of the File only in TFTP directory.

NOTE: All Variables are Case Sensitive. Don't Use Lower Case Format

IP_ADDRESS:

DEFAULT_GATEWAY:

IP_SUBNET_MASK:

TFTP_SERVER:

TFTP_FILE:

Finally, if Nothing worked out: TRY THIS:

1. Format the Flash card by using the erase nvram command.

2. Reload the IOS image.

3. Change the boot variable to point to the new image.

4. Reboot the device.

PLS Rate if HELPS

Best Regards,

Guru Prasad R

johnross400 Wed, 07/04/2007 - 02:41

Hi Guro

Thanks for taking the time to look into this for me.

I have a laptop directly connected to the router with ip address 172.15.19.2/30. The Router is 172.15.19.1/30 so what should I configure as the default g/w on the router? The TFTP_SERVER=172.15.19.2 is correct, eh?

It looks like this default g/w is configured wrong as the error message points out.....Missing or illegal ip address for variable DEFAULT_GATEWAY

Illegal gateway address.

Any comments on this?

Thanks again

John

guruprasadr Wed, 07/04/2007 - 03:16

HI John,

172.15.19.2/30 Subnet - IP Ranges as below:

Start IP: 172.15.19.1

End IP: 172.15.19.2

Subnet ID: 172.15.19.0

BroadCast ID: 172.15.19.3

INFO: Only 2 IP's are Usable.

This /30 Subnet is not Feasible for your current requirement. Kindly go ahead with /29 Subnet.

IP Ranges: 172.15.19.1 -to -172.15.19.6

Use 3 - IP's from the above /29 Segment.

Pls RATE / Vote if HELPS

Best Regards,

Guru Prasad R

johnross400 Wed, 07/04/2007 - 04:27

Yes the only way I could get this to work was through another router. Could not find a solution with a direct connection.

One point to note is the file name: c2600-j1s3-mz.123-13a.bin

Note the .bin

Thanks for all the help!!

v.avagliano Wed, 07/04/2007 - 02:15

Try th load of a small image through the consolle port (X-Modem procedure)

jay77jay77 Fri, 07/06/2007 - 00:46

Not sure whether you people got it sorted out. But still it can work with the gateway specified as 172.15.19.1

Jay

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