When an ASR 1000 router powers on or reboots, the ROMMON code executes first. It performs the following essential tasks:
I can provide the precise, validated upgrade path for your exact setup.
Download asr1000-rommon.173-1r.spa.pkg from Cisco Software Download center under "ASR 1000 Series" → "ROMMON Firmware".
(Alternatively, you can also use show rom-monitor slot R0 to see specific software levels). ⚡ Best Practices & Warnings
Ensure stable power during the upgrade process. A power failure while flashing ROMMON can corrupt the bootloader and require hardware replacement. Step-by-Step Upgrade Procedure 1. Transfer the Package File
rommon 1> boot bootflash:asr1000rp1-adventerprisek9.03.16.10.S.155-3.S10-ext.bin Use code with caution.
The version 17.3(1r) aligns with the Cisco IOS-XE release trains. ROMMON versions are not arbitrary; they are tied to specific IOS-XE releases.
If you plan to deploy this via
Expected output: