Asr1000-rommon.173-1r.spa.pkg

If the router fails to boot normally after the upgrade, it may drop into the ROMMON prompt ( rommon 1> ). From this prompt, you can manually boot a known good IOS XE image using the following command:

ROMMON is the low-level bootstrap firmware embedded in the processor complex of an ASR 1000 Route Processor (RP) or Embedded Services Processor (ESP). It resides on a physical ROM chip and is the first code to execute when the router powers on.

Test your ROMMON recovery every 12 months. Boot from USB, run dir , load a minimal IOS XE. That drill will expose any bootflash degradation or ROMMON bugs before an emergency. asr1000-rommon.173-1r.spa.pkg

This output should confirm: ROMMON: System Bootstrap, Version 17.3(1r), RELEASE SOFTWARE . 6. Troubleshooting and Recovery

ROMMON upgrade is . A failed upgrade (power loss during write, bad file, wrong hardware) leaves the RP in a non-bootable state. If the router fails to boot normally after

Once the router confirmation message indicates the upgrade succeeded, reload the chassis to execute the new code. Router# reload Use code with caution.

This article is for educational purposes. Always follow Cisco’s official documentation and change management policies when upgrading firmware. Test your ROMMON recovery every 12 months

upgrade rom-monitor filename bootflash:asr1000-rommon.173-1r.spa.pkg all Cisco Community