Additionally, check the overall health of the system modules: Router# show platform Use code with caution.
Thus, if you are upgrading from IOS-XE 16.6 to 17.3, you stage the ROMMON upgrade to 173-1r before loading the new IOS-XE image.
This output should confirm: ROMMON: System Bootstrap, Version 17.3(1r), RELEASE SOFTWARE . 6. Troubleshooting and Recovery asr1000-rommon.173-1r.spa.pkg
Before proceeding with the ROMMON upgrade, engineers should:
Before starting, ensure you have the correct ROMMON package and your target IOS-XE image (e.g., asr1001x-universalk9.17.06.03a.SPA.bin ). Additionally, check the overall health of the system
Or, during boot, watch for:
Are you upgrading a or a high-availability dual-RP system ? If the router fails to boot after upgrading,
If the router fails to boot after upgrading, enter manual ROMMON mode over a console cable connections ( 9600 baud ). Use the boot command manually to point to a known working backup IOS XE .bin image on the bootflash. Summary Checklist
| Component | Meaning | |-----------|---------| | | Platform family (ASR 1000 series – including ASR 1001-X, 1002-HX, 1004, 1006, etc.) | | rommon | ROMMON – the bootstrap firmware stored on the RP (Route Processor) or ESP (Embedded Services Processor) | | 173-1r | Version number: Major version 173, minor version 1, revision r (often indicates a rebuild or service pack) | | spa | Shared Port Adapter – though here, it indicates the package type for the SPA/driver environment | | pkg | Package file – the installable software bundle for the IOS XE ecosystem |
Think of this as the BIOS of your router. It runs before the main operating system (IOS XE) boots.
As Cisco advances its Cisco IOS XE codebase (such as the 17.x releases), the underlying hardware abstraction layer requires updated ROMMON capabilities. Upgrading ensures your router can successfully unpack, validate, and boot modern containerized and monolithic IOS XE images. 2. Mitigation of Known Hardware and Boot Vulnerabilities