ROMMON is the low-level bootstrap firmware embedded in the processor complex of an ASR 1000 Route Processor (RP) or Embedded Services Processor (ESP). It resides on a physical ROM chip and is the first code to execute when the router powers on.
Note: Always verify your specific hardware configuration via show inventory before applying the package to ensure it supports the 17.3(1r) microcode. 3. Pre-Upgrade Checklist
Cisco ASR 1000 Route Processor 2 (RP2) and Route Processor 3 (RP3) asr1000-rommon.173-1r.spa.pkg
Once upgraded to version 17.3(1r) , the router cannot be downgraded to any earlier ROMmon version.
If you see 16.x or 122-8r , you are several generations behind and should upgrade to 173-1r . ROMMON is the low-level bootstrap firmware embedded in
At first glance, it looks like just another package. But this file is – the low-level boot firmware that initializes the hardware before the IOS-XE image loads. Upgrading it is rare but sometimes critical.
Are you upgrading a or a high-availability dual-RP system ? At first glance, it looks like just another package
: Use the all keyword to ensure all relevant components (like line cards or RP) are updated.
Router# copy tftp://192.168.1.50/asr1000-rommon.173-1r.spa.pkg bootflash: Use code with caution. Step 2: Execute the ROMMON Upgrade Command