Using SecureCRT for TFTP

[jakwill94]

Hello,

Currently I'm trying to push IOS images to Cisco Catalyst 9300s via SecureCRT's built-in TFTP feature.

Whenever I try sending the .bin file via "send xmodem" I get the following error 

switch: 
Transferring , errors 1... Press Ctrl+C to cancel.

 I have changed the baud rate on the switch and my serial connection to 57600, but no luck.

[balaji.bandi]

That's not RFT, that is Xmodem, not sure why you looking to use that, that was the old days of school.

a new world is changing,d, you can copy the image to USB and do that is a quicker way of doing transfer images.

or TFTP other way 

[jakwill94]

Hello Balaji,

USB was my first option as that’s what I normally do but for whatever reason I’ve tried several 4GB and 8GB USB formatted to FAT32 and they would show ass unsupported in ROMMON.

My company has also banned the use of tftpd64. I have SecureCRT and I remember an old coworker telling me that it has SFTP capabilities so I thought I’d try using that. 

[balaji.bandi]

My company has also banned the use of tftpd64  - when you connect the Laptop to the switch port this was isolated. These is command tools most engineers use.

you can also SFTP Server if you looking to do so, but my easy step is TFTP quick and dirty way to fix.

if you looking to use you need to set ROMMON for SFTP (not xmodem)

best document :

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-9300-series-switches/216944-troubleshoot-bootloader-rommon-and-pas.html

[Leo Laohoo]

Put the firmware into a USB stick and use the command "emergency-install usbflash0:filename.bin".

[jakwill94]

Hello Leo,

USB is my go to, but in this situation trying to push the image in ROMMON it’s showing that whatever USB I see to use is showing as not supported which I read on here that it’s somewhat common. I was using the SFTP option in SecureCRT as it’s an option and since some other ftp tools have been blocked at my company. 

[Leo Laohoo]

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@jakwill94 wrote:
it’s showing that whatever USB I see to use is showing as not supported

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Your company has only one USB flash drive (for everybody) to use?  

Where I work, if I ask "does someone have a USB thumb drive I can borrow", I get handed about a dozen different varieties.

[jakwill94]

Apologies on how I worded that. As I’ve said to Balaji in the above comment I’ve tried several 4 and 8 GB USB drives all formatted to FAT32 all with the same outcome not being supported and showing up with nothing in dir. 

[Leo Laohoo · Accepted solution]

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@jakwill94 wrote:
formatted to FAT32

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Too FAT. 

The USB thumb drives need to be formatted to FAT16.

[jakwill94]

That worked like a charm, I was finally able to see the USB. Thank you for the help