Upgrading And Downgrading Rom Monitor Firmware; Information About Rom Monitor Firmware - Cisco ASR 9000 Series Configuration Manual

Upgrading and Downgrading ROM Monitor
Firmware
This chapter describes how to upgrade or downgrade the ROM Monitor Firmware.
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Information About ROM Monitor Firmware

The ROM Monitor, which is also known as ROMMON, is a bootstrap program that initializes the hardware
and boots the Cisco IOS XR firmware when you power on or restart a Cisco ASR 9000 Series Router. ROM
Monitor upgrades can be required to resolve firmware defects or support new features. Typically, ROM
Monitor upgrades are infrequent and not required for every Cisco IOS XR software upgrade.
The ROM Monitor firmware on all Route Processors (RP)s must be compatible with the current Cisco IOS
XR software release running on the router before it is upgraded to the latest Cisco IOS XR Software Release.
For minimum ROM Monitor requirements, see Software/Firmware Compatibility Matrix at the following
URL:
http://www.cisco.com/web/Cisco_IOS_XR_Software/index.html
If the router is brought up with an incompatible version of the ROM Monitor software, then the standby RP
may fail to boot.
This table lists the minimum ROMMON version required for Cisco ASR 9001 Routers:
Table 7: Minimum ROMMON Version Required for Cisco ASR 9001 Routers
Cisco IOS XR Release
Release 5.1.1
OL-30420-01
Information About ROM Monitor Firmware , page 63
Upgrading or Downgrading ROM Monitor Using the FPD PIE, page 65
ROM Monitor Upgrades: Examples, page 69
Additional References, page 75
Cisco ASR 9000 Series Aggregation Services Router ROM Monitor Configuration Guide, Release 5.1.x
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C H A P T E R
Minimum ROMMON Version
2.03
63