Core Issue
Unlike other Cisco routers, these series routers do not have a boot image in ROM or bootflash.
Resolution
To resolve this issue, perform these steps:
- If booting an image from a TFTP server from ROM Monitor (ROMmon) mode is required on a Cisco 1700, 2600, 3600 or 3700 series router, verify that a bootable image is in Flash.
Issue the dir flash: command, as shown in this example:
rommon 1 >dir flash:
program load complete, entry point: 0x80008000, size: 0xb2a0
Directory of flash:
2 6821196 -rw- c3725-i-mz.122-8.T5.bin
1668 15373100 -rw- c3725-is-mz.122-11.T6.bin
rommon 2 >
- If a bootable Cisco IOS image is in Flash, issue the boot filename [tftp-ip-address] command to boot from a TFTP server.
For example, to boot an image named c3725-ds-mz.122-13.T.bin from a TFTP server with the address of 10.1.1.2, the ROMmon command would be as shown:
boot c3725-ds-mz.122-13.T.bin 10.1.1.2
- If no bootable Cisco IOS image is in Flash, copy one into Flash by issuing either the xmodem command or the tftpdnld command before attempting to boot from a TFTP server.
Note: The tftpdnld command is only available with the Cisco 1700 and 2600 series.
For step-by-step procedures, refer to these documents:
Once a bootable image is in Flash, booting from a TFTP server is possible.