Asr1000-rommon.173-1r.spa.pkg (2025)

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