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tar file in the correct manner using the “archive” command.ġ2.
#CISCO 3750 FIRMWARE UPGRADE INSTALL#
When the switch has booted, you may want to install the full. Once that’s done, issue the command “boot flash:” and the IOS will load up.ġ1. Click “Send” and you should see the process start.ġ0.
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In the dialogue box, make sure the protocol is XModem and put in the location of your. In Hyperterminal click Transfer | Send File. Tell the switch to expect a file by Xmodem, and put it on the flash: “copy xmodem: flash:” The filename should be the same as what you extracted from the. Type “load_helper” to load any helper files (in our case there weren’t any since we’d just wiped the flash).Ĩ. Type “flash_init” to initialise the filesystem. You should get intelligible stuff on the screen once more.Ħ. Close Hyperterminal and re-connect using 115200 baud instead. After you enter this command, you will start to get funny characters in Hyperterminal because its baud rate and the Catalyst’s are now mis-matched.ĥ. bin file at 9600 baud is going to take a loooong time (about 2 hours), so we will change the baud rate of the console port temporarily. Try power-cycling the Catalyst while holding the “Mode” button on the front in to get the bootloader.Ĥ. If you don’t see that, either you’re booted up, and you don’t need these instructions, your switch is properly broken, or you’ve got your terminal settings wrong. You should see a prompt that says “switch:”. Connect to the switch using Hyperterminal at 9600 baud, 8 N 1.ģ. However when you’re stuck in bootloader mode, there’s no such command. tar file over and extracts it onto the filesystem. When the switch is running normally, you’d use the command “archive download-sw tftp:///” – this command copies the. bin image that the switch needs to boot, and some other stuff (for Cisco View Device Manager etc).
#CISCO 3750 FIRMWARE UPGRADE ARCHIVE#
Tar is an old Unix file archive type – it actually stands for “tape archive” and was used for archiving things to tape. The software for these switches comes as a.
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I thought I’d write this up because I found it a bit difficult locating the information on. What he didn’t expect was that the switch would subsequently reboot and end up in bootloader mode with no software on it… He did this because there was only 16MB of flash on the switch and therefore not enough room for two images at the same time. A colleague of mine just called, having done an “erase flash” on a 3750.