Asr1000-rommon.173-1r.spa.pkg High Quality < 2K • 4K >

Unlike standard IOS XE upgrades, ROMMON changes do not take effect immediately upon code execution. The firmware is written to a standby EEPROM bank. To complete the upgrade, you must reload the router: Router# write memory Router# reload Use code with caution. Post-Upgrade Verification

Upgrading the ROMMON firmware is not just about keeping software up to date; it directly impacts system availability and security. Bug Fixes and Stability

Provides a basic command-line interface (CLI) to manually boot images or recover the system if the primary IOS XE image becomes corrupted. Key Features of Release 17.3(1r)

Note: Always verify the exact hardware deployment using the show platform or show version command to ensure compliance with the 17.3(1r) release notes. Verification Check asr1000-rommon.173-1r.spa.pkg

: On specific platforms like the ASR 1001-X, 1001-HX, 1002-HX , and ASR 1000-RP3 , once you upgrade to ROMMON 17.3(1r), you cannot revert to a version earlier than 17.3(1r). Why Upgrade to ROMMON 17.3(1r)?

Upgrading to 17.3(1r) may cause some modules to enter a "disabled" state after the process. The RP2 Verification Error:

On ASR1002-RP2 (VID >= V07), upgrades from IOS XE 3.x to 17.x can fail with an MD5 mismatch error during the intermediate ROMMON step. MIP 100 Boot Issues (Bug CSCwm58500 Unlike standard IOS XE upgrades, ROMMON changes do

Upgrading to version is often a prerequisite for moving to modern Cisco IOS XE releases, such as the 17.x train, to ensure hardware compatibility and stability. Key Purpose and Compatibility

Prepares the Route Processor (RP), Embedded Services Processor (ESP), and Shared Port Adapters (SPAs) for operation.

After the router finishes booting into IOS XE, verify the success of your operation: Router# show platform | include ROMMON Use code with caution. The output should now clearly state 17.3(1r) . Troubleshooting Common Failures Verification Check : On specific platforms like the

– Stable and essential for modern IOS XE

: ROMmon is the bootstrap program that initializes the hardware and boots the Cisco IOS XE operating software.

is a ROMMON (ROM Monitor) image package for Cisco ASR 1000 series routers. ROMMON images provide a low-level bootstrap environment used for hardware initialization, recovery, and for loading IOS-XE images when the main OS is unavailable or needs recovery. The 173-1r designation indicates a ROMMON build family/version that aligns with IOS-XE 17.3.x releases for ASR1000 platforms.

If you are operating a dual/redundant Route Processor chassis (such as an ASR 1006 with two RPs), you must upgrade the secondary slot as well: