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

| Component Type | Supported Hardware | Minimum Release Required | |---------------|--------------------|--------------------------| | | ASR1000-RP1, ASR1000-RP2, ASR1000-RP3 | Varies by model | | Embedded Services Processors (ESPs) | ESP5, ESP10, ESP20, ESP40, ESP100, ESP200 | Varies by model | | Integrated Platforms | ASR1001, ASR1002, ASR1002-F, ASR1002-X (from Release 15.2[4r]S onward) | As noted | | High-End Platforms | ASR1001-HX (from Release 16.2[2r] onward), ASR1002-HX (from Release 16.2[1r] onward) | As noted |

ROMMON operates independently of the Cisco IOS XE software, but running an outdated ROMMON version on modern hardware can cause critical system failures. Upgrading to the 17.3(1r)SG release provides several key benefits:

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.

Ensure the router’s local flash memory ( bootflash: ) or external USB flash ( usb0: ) has sufficient free space (typically less than 20 MB is required for the PKG file). asr1000-rommon.173-1r.spa.pkg

: Providing a low-level environment to recover from lost passwords, corrupted software images, or hardware failures Separation of Powers

The .spa in the filename indicates better initialization of Shared Port Adapters (like 1-port 10GE or 8-port T1/E1) during boot, preventing "SPA not detected" errors.

Compare against Cisco’s published hash. | Component Type | Supported Hardware | Minimum

The system will verify the code signature and upgrade the Route Processor (RP), Embedded Service Processor (ESP), and SPA Interface Processor (SIP). The upgrade process writes a new image to the ROMMON partition and typically takes around 8 minutes to complete.

Always perform ROMMON upgrades via a direct console connection. SSH or Telnet sessions will disconnect during the mandatory router reboot.

The software package represents a critical lifecycle release. It brings essential stability fixes, security enhancements, and support for newer IOS XE release trains. Why Upgrading to ROMMON 17.3(1r) Matters rommon specifies the target firmware type

Follow this sequence to safely copy, verify, and program the new ROMMON image into the router's non-volatile boot flash memory. Step 1: Copy the ROMMON Package to the Router

: upgrade rom-monitor filename bootflash:asr1000-rommon.173-1r.spa.pkg all

Experts recommend upgrading the ROMmon first, but do not reboot until you have also unpacked the new IOS XE .bin file and updated your boot variables to packages.conf .