![]() See the Recover from a Continuous Reboot section of this document to determine if a valid system image is present in the bootflash. See the Recover from a Corrupt or Missing Image section of this document for more information. The switch could wind up in ROMmon mode due to these reasons:Ī switch reload or crash after the image was corrupted or deleted. ![]() Recover Switch from a Corrupt or Missing Image in ROMmon Mode The following are the ROMmon variables that Catalyt 9400 supports and examples to set them:Ī value of "yes" disables auto boot and enables manual booting. You can have as many system images as youĬan fit in the bootflash. Notice in the previous example, there is only a single boot image in bootflash. Since the switch recognizes all Flash devices in ROMmon mode, you can issue the dir device-name commands to show the Flash contents, as is demonstrated in the remaining sections of this document If the image has a valid checksum, as this example shows:Ħ1341696 bytes total (54824664 bytes free)ĬCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCĬCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC You can issue the dir bootflash:Ĭommand to view the contents of the Supervisor Flash device, as this example shows. ![]() When the switch operates normally, it is at the hostname> prompt or the default Switch> prompt. There is no option for Xmodem or Ymodem which allows you to copy an image New valid image through TFTP from a TFTP process. These Supervisor Engine also providesĪn Ethernet Management port (10/100 Base T), which is available only from ROMmon mode and can be configured to download a Switch must be able to locate a valid system image from either the bootflash device. Is set incorrectly and therefore winds up in ROM monitor (ROMmon) mode. The switch cannot find the image, the image is corrupt, no image is present in the bootflash device, or the boot variable The switch starts up normally and displays the Hostname> prompt or the default Switch> prompt. When the Supervisor-equipped switch boots up or resets, there are these two possibilities: The switch provides a number of ways to recover should any of these events occur on The Supervisor module image can sometimes be corrupted during a Trivial File Transfer Protocol (TFTP) download, This section explains how to recover a Catalyst 9400 Series Supervisor from a missing or corrupted system image, or an incorrectīoot variable.
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