#Cisco switch tftp server software

Put right IOS file (for example 4500.bin) under tftp server root folder. 2.2 Configure Mgmt Port on Cisco 4500 with ip address 10.10.10.10. rommon 0 >Дў.1 Connect Mgmt port on Cisco 4500 to your machine which Tftp server is running on. For help on choosing a boot method, type 'confreg' command. To find currently set Rom Monitor variables, please type 'set' command. Could not find a valid file in BOOT environment variable. config-register = 0x102 Autobooting using BOOT variable specified file. PASSED flash0:/codesign/fpga.dat open failure Verifying ROMMON (P) Signature. This may be because it was never initialized. If you try to Telnet to any of the interfaces it fails, and if you are connected to the console port of the Supervisor, you see this prompt: See the Recover from a Continuous Reboot section of this document for more information.

The boot variable is incorrect, but a valid image is still present.

#Cisco switch tftp server software

Refer to this document for more information about the configuration register:The Configuring the Software Configuration Register section of Configuring the Catalyst 4000 Family Switch for the First Time. The typical configuration register is 0x2102, with the boot system flash command pointing to the system image to load. The configuration register value of 0x0 always brings the switch to ROMmon mode. The configuration register has been changed incorrectly.

If there is no file present, see the Recover from a Corrupt or Missing Image section of this document See the Recover from a Continuous Reboot section of this document to determine if a valid system image is present in the bootflash. The Compact Flash which holds the system image has been removed.See the Recover from a Corrupt or Missing Image section of this document for more information.

A switch reload or crash after the image was corrupted or deleted.

Here are some reasons why switch could wind up in ROMmon mode from Cisco doc:

Recover Cisco 4507 Switch from a Continuous Reboot.

Recover Cisco Device using TFTP Server or External Card from a Corrupt or Missing Image or in Rommon Mode.

What I met is a situation Cisco 4500 switch got into Rommon mode and I have to find a quickest way to get in back in production before the maintenance window ends. Cisco Switch usually is quite robust and not give me hard time.