The timeout was long enough to locate and send a firmware file via HyperTerminal > Transfer > Send. The "C" letters begun to emerge on the screen one by one letting me know that switch is waiting for firmware transmission. binīegin the Xmodem or Xmodem-1K transfer now. Switch: copy xmodem: flash: FIRMWARE-IMAGE-NAME. The Putty session was terminated and HyperTerminal was initiated instead.
I did install the app and got a new connection to the COM port prepared with matching parameters: Speed = 115200 baud and Flow control = Xon/Xoff.
Trial version good enough for 30 days and lets to type commands in the terminal window.
I ended up with the utility of the same name as HyperTerminal (google hilgraeve HyperTerminal-trial).
Unfortunately, I dunno that "appropriate command on the terminal-emulation software" as the 3750 manual says, shame on me. Putty tools appeared to be a bit complicated to get them working. I couldn't fire standard HyperTerminal on my Win10 even I copied its. Next, I was needed for an app in order to upload the firmware image. Of course, I had to set the BAUD parameter to default 9600 baud before exiting ROMmon. This parameter going to survive during reboot, so I had to set Console (Putty) and Hyper terminal (HyperTerminal Trial) accordingly.
Apparently, the service was initiated already.Īs I wasn't going to wait for file transfer for ages I proceeded with the following string: load_helper doesn't work on this device, and it didn't appear in the menu upon boot, even it mentioned in the 3750v2 CLI manual. So, I started my battle with the "problem" from another couple of obvious strings: The followingĬommands will initialize the flash file system and finish loading the operating system The system has been interrupted prior to initializing the flash file system. Instead, ROMmon mode greeted me with the following screen and strange-looking prompt: The challenge was initiated with a couple of strings:Īs expected, the switch was unable to boot up as there was no file on the flash. That's why I decided to have a test on the old and least valuable asset in my lab. I've done a similar recovery on AIR-CAP2702I-Z-K9 but it is a newer device with TFTP available in ROMMON. The reason: I want to be prepared for unpleasant surprises that may occur in the future for any reason. I did play hard with my c 3750 v2 and have decided to put myself in a trial.