Cisco Cisco CRS-1 16-Slot Line Card Chassis 技术手册

Contributed by Samuel Milstead, Cisco TAC Engineer.
Jul 11, 2014

Introduction
Why upgrade ROMMON manually?
Upgrade ROMMON Manually from the XR CLI
Determine the Current ROMMON Version
Download ROMMON Software
Copy ROMMON Software to the Router
     Card Type and Image Name
Upgrade ROMMON
Verify ROMMON
Reload to Use New ROMMON

This document describes how to upgrade to the latest Carrier Routing System (CRS) ROM Monitor Mode
(ROMMON) version in such as way that you do not have to upgrade the Cisco IOS

®

 XR software.

A manual upgrade of ROMMON is rarely needed. However, in some cases, it might ease the upgrade process
or resolve an issue such as Field Programmable Device (FPD) corruption.

One example where this might be needed is Cisco bug ID CSCuj35602 − PRP ROMMON changes to support
511 Images which are bigger than 360 MB.

Symptom: A CRS PRP (CRS−16−PRP−12G, CRS−16−PRP−6G, CRS−8−PRP−12G, CRS−8−PRP−6G)

running ROMMON version 2.07 or earler does not have support to perform a TFTP

turboboot for images bigger than 360 MB.

Currently the IOS−XR release 5.1.1 and later is bigger than 360 MB, so the ROMMON

must be upgraded to version 2.08 in order to turboboot the 5.1.1 mini.vm file.

When attempting the turboboot via TFTP it will fail with the following error.

TFTP: out of memory. Transfer failed after 377487360 bytes.

TFTP: Operation terminated.

Workaround: Upgrade the ROMMON on the PRPs to version 2.08 manually prior to

the upgrade or upgrade to 5.1.1 without tftp turboboot and then upgrade the

ROMMON to the 2.08. The ROMMON version 2.08 is posted on CDC in the download

section. The ROMMON bundled with release 5.1.1 is version 2.08 so once the

system is running 5.1.1 the ROMMON can be upgraded to version 2.08 using the

admin upgrade hw−module fpd command.