CCNA 35_Cisco Switch: Rommon Recovery by xModem (Unable to Boot, IOS Corrupted, Stuck in Switch: )
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- čas přidán 11. 09. 2024
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I'm Sujoy and today I'll show you how to recover Cisco Switch from Rommon mode (Switch: prompt)
Topics Explained-
1. Difference between Cisco Router Rommon mode and Cisco Switch: prompt
2. What happens when switch could not find valid IOS file to boot
3. How to initialize flash memory of Cisco switch command
4. How to change BAUD rate on Cisco switch Console Port
5. How to copy Cisco IOS file via xModem protocol
6. How to transfer IOS file using HyperTerminal
7. How to increase xModem file transfer speed
8. How to set BOOT variable in Cisco switch
9. How to recover dead Cisco switch
10. How to boot Cisco switch
11. Problem- Cisco 2960 switch stuck in Switch: mode prompt, IOS file corrupted on Switch flash memory
That's it for now! How is the video? Let me know.
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I sincerely would like to acknowledge many thanks to your valuable video that recover my 3560 switch from switch mode back to normal mode. this video is worth 1M thanks
Thanks a lot . It worked for my Cisco 3750x Switch :)
This worked, must pay attention to the dram/file size of the files.. Mine would not load a 128/32 dram/flash file but, the 128/16 works fine.
Thanks brother. It is really come in handy!
Thank you sir worked like a charm
Hi Sujoy, i have the same issue with my Cisco catalyst 3650 switch but it wont allow me to load the IOS file. it comes up with an error message " Transfer cancelled by remote system" please help?
Follow the instructions as exactly given in video. It'll work. Try 2-3 times. Just be sure there's enough free memory in device.
@@sujoy70 ok will try again but can i ask if the file system is read only will it work?
List of filesystems currently registered:
xmodem[0]: (read-only)
null[1]: (read-write)
bs[3]: (read-only)
flash[18]: (read-only)
tftp[19]: (read-write)
many thanks for responding so quickly
@@RichKidaz378 You've to give command flash_init at beginning.
@@sujoy70 i did give that command.
switch: flash_init
Initializing Flash...
...The flash is already initialized.
switch: set BAUD 115200
switch: copy xmodem: flash:cat3k_caa-universalk9.16.09.06.SPA.bin
Begin the Xmodem or Xmodem-1K transfer now...
CCCBB0flash:cat3k_caa-universalk9.16.09.06.SPA.bin: read only file system
cisco WS-C3650-24PS (MIPS) processor with 4194304K bytes of physical memory.
Processor board ID FDO2104E0LN
1 Virtual Ethernet interface
28 Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.
250456K bytes of Crash Files at crashinfo:.
1609272K bytes of Flash at flash:.
0K bytes of Dummy USB Flash at usbflash0:.
0K bytes of at webui:.
Now I get an image like below. Can you help us?
I have failed doing this....c3550 failed to access after xmodem transfer....
thank you
xmodem is read only.
plz suggest how to set it read-write
You can use it for read + write both. You've to just change source & destination. For example- to write to flash use copy xmodem:file flash:file and to copy from flash use- copy flash:file xmodem:file Please subscribe my channel if it helps!
when i trasfer the files it says read only file system. plz help
switch:
switch: copy xmodem: flash:cat3k_caa-universalk9ldpe.16.12.05b.SPA.bin
Begin the Xmodem or Xmodem-1K transfer now...
CCCCCCBB0flash:cat3k_caa-universalk9ldpe.16.12.05b.SPA.bin: read only file syste
m
is this why i cant transfer the files(ios)?
List of filesystems currently registered:
xmodem[0]: (read-only)
null[1]: (read-write)
bs[3]: (read-only)
flash[18]: (read-only)
tftp[19]: (read-write)
ftp[20]: (read-only)
http[21]: (read-only)
You have to give full source & destination path.
switch: copy xmodem:cat3k_caa-universalk9ldpe.16.12.05b.SPA.bin flash:
** OR **
switch: copy xmodem:cat3k_caa-universalk9ldpe.16.12.05b.SPA.bin flash:cat3k_caa-universalk9ldpe.16.12.05b.SPA.bin
** Remember **
Not to have any space after xmodem: and flash:
@@sujoy70 ohh dat simple thing i missed... thank you for answering this question very very informative and helped
sir this same method can we do for ACCESS POINT ah 1131G model i had im trying this method
Yes, you can.
How to get hyper terminal in windows 10
I used tera term