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

Delete the corrupted file using delete bootflash:asr1000-rommon.173-1r.spa.pkg , clear the file system recycle bin using squeeze bootflash: , and re-download the package using a reliable transfer protocol like SCP or SFTP. Router Fails to Boot (Stuck in ROMMON Prompt)

The file is a ROM Monitor (ROMmon) firmware package for the Cisco ASR 1000 Series Aggregation Services Routers . This specific version, 17.3(1r) , is a critical system component required to support newer versions of the Cisco IOS XE software, specifically when upgrading to the 17.x release train. Purpose and Functionality

To help me tailor any further technical information, could you share your specific and your current Cisco IOS XE software version ? AI responses may include mistakes. Learn more Share public link

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 asr1000-rommon.173-1r.spa.pkg

Next time you log into your ASR 1000, run show rom-monitor . If the version does not read 173-1r , plan your upgrade window today.

In some cases, the upgrade process appears to complete successfully, with the router displaying messages like "ROMMON upgrade complete" and verifying the CRC checksum. However, after performing a reload and multiple reboot cycles, the ROM monitor version remains at the older version despite appearing to have been upgraded.

The filename itself is highly descriptive. The asr1000 prefix indicates the platform is any ASR1000 series router. rommon specifies the target firmware type. 173-1r corresponds to ROMMON , where r stands for a "ROMMON package release". The spa designation marks it as a shared-port adapter style package for ROMMON, and the .pkg extension denotes it as a package file for field-programmable devices. Purpose and Functionality To help me tailor any

The router will extract the package file and program the field-programmable gate array (FPGA) / ROMMON flash block. A successful write will return a confirmation message indicating that the new ROMMON will take effect upon the next reload. Step 4: Reload the Router To execute the microcode change, reload the chassis: Router# reload Use code with caution. 5. Post-Upgrade Verification

If you manage Cisco ASR1000 series routers (1001, 1002, 1004, 1006, etc.), you’ve likely come across the file: asr1000-rommon.173-1r.spa.pkg

If you’re already on a recent 17.x IOS XE train, 173-1r is the de facto standard. It’s not flashy, but it fixes real-world boot and security issues that can take down remote routers. Just ensure you meet the IOS XE version prerequisite and schedule a reload window. Recommended for all ASR 1000 deployments on IOS XE 17.3+. 173-1r corresponds to ROMMON

Before upgrading, check your current ROMMON version:

Run the upgrade command targeting your primary Route Processor. For a standard single-RP system (like the ASR 1001-X), use:

Integrated chassis models where the RP is built-in.

Do not proceed if the output hash does not match Cisco’s website. Step 4: Execute the ROMMON Upgrade Command

If the upgrade command fails instantly, verify that your active IOS XE release supports the installation command structure. Some older 16.x trains require specific syntax adjustments or upgrade tool patches.