: Use TFTP, SCP, or a USB drive to move the package to the router's bootflash.
Newer software releases often rely on upgraded hardware initialization routines that only a newer ROMMON can provide.
Router# upgrade rom-monitor filename bootflash:asr1000-rommon.173-1r.spa.pkg all Use code with caution. asr1000-rommon.173-1r.spa.pkg
Router# write memory Router# reload
The output will display the current system bootstrap version. If it is already Version 17.3(1r) , the upgrade is not required. For a single form-factor platform like the ASR 1001-X, the command show rom-monitor R0 can be used. : Use TFTP, SCP, or a USB drive
The ROM Monitor (ROMMON) is the bedrock of Cisco hardware initialization. It initializes the hardware, runs diagnostic tests, and boots the Cisco IOS XE operating system. For network engineers managing Cisco Aggregation Services Routers (ASR) 1000 Series, maintaining the ROMMON is critical.
The asr1000-rommon.173-1r.spa.pkg is a Cisco-signed, digitally secure software package designed specifically for the ROMMON (bootloader) of the Cisco ASR 1000 Series routers. Router# write memory Router# reload The output will
If the router drops directly into a rommon 1> prompt during a reboot, the system boot variables may have been cleared. You can manually point the router to your valid Cisco IOS XE image file to restore operations:
Verify the file integrity by checking the MD5 checksum against Cisco’s documentation: Router# verify /md5 bootflash:asr1000-rommon.173-1r.spa.pkg Use code with caution. Step 3: Executing the Upgrade
Upgrading ROMMON is a delicate procedure that must be followed precisely. The process is detailed below.
As seen in some scenarios, you might encounter issues if the ROMMON is too old to recognize the new package, or if the signature validation fails. In the Cisco Community discussion , a user encountered an "invalid RP package type" error, suggesting that the upgrade path must be done in stages if the ROMMON is significantly outdated.
