It initializes the Route Processor (RP), Embedded Service Processor (ESP), and SIPs.
Router# upgrade rom-monitor filename bootflash:asr1000-rommon.173-1r.spa.pkg all Use code with caution.
After the upgrade completes, the new ROMMON version will not be active until the router is reloaded.
Upgrading the ROMMON on an ASR 1000 involves downloading the firmware package, verifying its integrity, modifying the boot variables, and executing the upgrade command. Step 1: Download and Verify the Image
This procedure uses the option to upgrade all components (RP, ESP, SIPs), which is recommended. Step 1: Upgrade the ROMMON Execute the following command in privileged EXEC mode: asr1000-rommon.173-1r.spa.pkg
Unlike IOS-XE patches, ROMMON updates are rare and deliberate. Reasons include:
: Patches legacy microcode bugs and low-level security vulnerabilities.
show platform rommon
Run the upgrade command targeting your primary Route Processor. For a standard single-RP system (like the ASR 1001-X), use: It initializes the Route Processor (RP), Embedded Service
Router# upgrade rom-monitor filename bootflash:asr1000-rommon.173-1r.spa.pkg all Use code with caution.
From a compliance perspective (PCI-DSS, HIPAA), running unsupported or legacy ROMMON versions can be a violation. Always keep ROMMON updated per Cisco’s security advisories.
If an issue occurs during or after the upgrade process, use these troubleshooting steps. Missing Boot Variables
(example SHA256):
ROMMON updates frequently resolve low-level hardware issues. This version includes enhancements for: Power supply unit (PSU) communication protocols. Fan tray speed control algorithms to mitigate overheating.
After reload, verify with:
The recommended method is to upgrade the ROMmon via the CLI, which allows the file to be copied into the boot flash. Step 1: Copy the File to Bootflash
Several users have reported issues when upgrading ROMMON using this specific package. The most common problems include: Upgrading the ROMMON on an ASR 1000 involves