In the real scenario many times we are facing switch and Router IOS related issues in Cisco 2900 Series Switch. Sometime IOS will be deleted or corrupted or required to change for an updated version. At that time first, we have the IOS image second thing is required to make a TFTP server or something else like a pen drive or download from Google.
Assume that now you have IOS Image, but problem is that how to copy or uploads it on the device (Switch & Router). Maybe there are many ways to copy or upload the IOS image into the device (Switch & Router).
First if the device support USB then you can upload it via pen drive it is the easy way. Second is from the TFTP server, you can copy the image in the TFTP server from the same another device (Switch & Router) then upload it from the TFTP server into without the IOS device(Switch & Router).
Note*: TFTP server when working if your switch or router can ping the TFTP server.
The third way for the copy or upload IOS image by use the XMODEM command with using the TERATERM application for TELNET & CONSOLE.
Now here I have one Cisco 2900 catalyst switch series, by mistake, I have lost the IOS image file and Switch gone in ROMMON mode showing below.
SWITCH IN ROOMON MODE.
Issue: Unable to copy IOS to Switch using USB or Telnet.
Reason: We faced an issue regarding the switch always being booted in ROMMON mode, later on, we came to know that our colleague accidentally deleted the IOS. Copying the IOS not a big issue but having no USB port or TFTP connection made the task difficult.
Solution: In a case when no USB or TFTP connection available, we can use the XMODEM to transfer the IOS to Switch/Router. Just follow the below step:
Here first we can try to check IOS image is available or not but the reality is that not available. So first we do BOOT the switch with the help of command in ROMMON mode.
This command runs in the ROMAN mode of a switch using for BOOT. After the BOOT simply run Xmodem and copy IOS where you saved in PC and paste in flash with using a command.
When you click on send one pop up coming and then you select the IOS image where you saved in your system after this IOS is moved on Switch flash memory.
After all process, you reset the switch you can see the switch and you feel happy to see the switch is in user mode. Now your new switch with IOS is ready for work.