Asr1000-rommon.173-1r.spa.pkg May 2026

On a live ASR1000, run:

Introduction: The Unsung Hero of Router Bootstrapping In the world of Cisco enterprise networking, the ASR 1000 series stands as a workhorse for aggregation and edge routing. While network engineers frequently focus on the IOS-XE software images that define features and forwarding planes, a smaller, equally critical file lurks in the flash memory: the ROMMON image . asr1000-rommon.173-1r.spa.pkg

Before your next major IOS-XE upgrade, check your ROMMON version. If it’s older than 17.3(1r), plan a maintenance window, follow the upgrade steps meticulously, and test your console server connectivity. Your future self will thank you when the router boots cleanly on first try. On a live ASR1000, run: Introduction: The Unsung

A: No. The running-config and startup-config are stored in a separate partition (NVRAM or bootflash variable). ROMMON upgrade is non-destructive to configurations. If it’s older than 17

reload location all force-download Or power cycle the chassis entirely (turn off/on). The ROMMON version is read very early in POST. After boot, re-run:

show platform rommon Expected output: