topic Re: downloading image file from TFTP server in flash from rom mode in Routing and SD-WAN

downloading image file from TFTP server in flash from rom mode

harsimranjeetpantla — Tue, 15 Jun 2021 03:16:05 GMT

Hello my router has missing the IOS file but i have the copy of the file in my tftp server. due to missing file, my router goes directly to rom mode. I tried tftpdnld command in case and i got this output

rommon 5 > Ip_address=192.168.1.1

rommon 6 > ip_subnet_mask=255.255.255.0

rommon 7 > tftp_server=192.168.1.2

rommon 8 > tftp-file=c2900-universalk9-mz.SPA.151-4.M4.bin

rommon 9 > tftpdnld

Missing or illegal ip address for variable IP_ADDRESS

Illegal IP address.

usage: tftpdnld

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)

Is there any way I can copy the file from tftp to flash so that i can boot the device.

Re: downloading image file from TFTP server in flash from rom mode

paul driver — Tue, 15 Jun 2021 03:40:12 GMT

Hello

Example tftpdnld:
tftp server =172.16.1.10/24
Your Rtr = 172.16.1.4/24

power cycle router
Press crtl-break
Type -set

IP_ADDRESS=172.16.1.4
IP_SUBNET_MASK=255.255.255.0
DEFAULT_GATEWAY=172.16.1.10
TFTP_SERVER=172.16.1.10
TFTP_FILE=xxxxxx.bin
TFTP_RETRY_COUNT=20

then type:
tftpdnld

Re: downloading image file from TFTP server in flash from rom mode

harsimranjeetpantla — Tue, 15 Jun 2021 03:49:59 GMT

Hello Paul,

thanks for replying,

First of all my router goes directly to rom mode.

I am still not able to copy ios file from tftp to flash:(

Here's the output i got when i tried tftp dnld

rommon 9 > tftpdnld

Missing or illegal ip address for variable IP_ADDRESS

Illegal IP address.

usage: tftpdnld

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)

Re: downloading image file from TFTP server in flash from rom mode

paul driver — Tue, 15 Jun 2021 03:55:20 GMT

Hello
Did you perfrom the steps i provided
Type = set < before you apply any tftp config?

Re: downloading image file from TFTP server in flash from rom mode

harsimranjeetpantla — Tue, 15 Jun 2021 03:57:29 GMT

I performed these steps before typing tftpdnld

rommon 3 > Ip_address=192.168.1.1

rommon 4 > IP_subnet_mask=255.255.255.0

rommon 5 > default_gateway=192.168.1.252

rommon 6 > tftp_server-192.168.1.2

monitor: command "tftp_server-192.168.1.2" not found

rommon 7 > tftp_server=192.168.1.2

rommon 8 > tftp_file=c2900-universalk9-mz.SPA.151-4.M4.bin

Re: downloading image file from TFTP server in flash from rom mode

paul driver — Tue, 15 Jun 2021 05:08:02 GMT

Hello

try uppercase as shown-

set

IP_ADDRESS=192.168.1.1
IP_SUBNET_MASK=255.255.255.0
DEFAULT_GATEWAY=192.168.1.252
TFTP_SERVER=192.168.1.2
TFTP_FILE=c2900-universalk9-mz.SPA.151-4.M4.bin
TFTP_RETRY_COUNT=20

tftpdnld

Re: downloading image file from TFTP server in flash from rom mode

harsimranjeetpantla — Tue, 15 Jun 2021 05:42:37 GMT

Thank you for your help.

Re: downloading image file from TFTP server in flash from rom mode

Mohsin Alam — Tue, 15 Jun 2021 05:50:37 GMT

The variables are case sensitive.

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Re: downloading image file from TFTP server in flash from rom mode

Leo Laohoo — Tue, 15 Jun 2021 06:12:39 GMT

Why? What is this long, and un-necessary, process for?

2900 have removeable CF.