Turbo Boot Procedure; Turbo Boot Prerequisites; Rommon Upgrade Instructions - Cisco CRS-1 - Carrier Routing System Router Migration Manual

Turbo Boot Procedure

This appendix describes the procedures to perform turbo boot operations and file system disk upgrades
from FAT 16 to FAT32.
This is the procedure to use to downgrade your Cisco CRS-3 back to a Cisco CRS-1 instead of the one
listed in Chapter 2.

Turbo Boot Prerequisites

Before performing a turbo boot on a system running Cisco IOS XR software release 4.0.0.T images you
must upgrade your ROMMON image to the release 2.01 version
If the Route Processor (RP) ROMMON is a version earlier than version 1.52, upgrade it to version 2.01
or above. Follow the steps provided below.
Turboboot requires an upgrade of ROMMON A and ROMMON B to ROMMON 2.01 because the older
ROMMON versions are unable to load the larger IOS-¦-XR 4.0.0.T (or higher) VM files. This has to be
done with the external binaries and special hidden commands.

ROMMON Upgrade Instructions

Download the tar file (rommon-2.1.tar), untar it on a PC and copy the binaries to disk0:
Step 1
The following files should be on the flash disk (only the ppc files are required):
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Step 2 Upgrade ROMMON B while in admin mode as shown in the following example :
OL-13669-03
rommon-¦-hfr-¦-ppc7450-¦-sc-¦-dsmp-¦-A.bin
rommon-¦-hfr-¦-ppc7450-¦-sc-¦-dsmp-¦-B.bin
rommon-¦-hfr-¦-ppc7455-¦-asmp-¦-A.bin
rommon-¦-hfr-¦-ppc7455-¦-asmp-¦-B.bin
rommon-¦-hfr-¦-ppc8255-¦-sp-¦-A.bin
rommon-¦-hfr-¦-ppc8255-¦-sp-¦-B.bin
rommon-¦-hfr-¦-ppc8347-¦-sp-¦-A.bin
rommon-¦-hfr-¦-ppc8347-¦-sp-¦-B.bin
RP/0/RP0/CPU0:CRS-C#admin
Thu Jan 21 14:47:53.694 PST
RP/0/RP0/CPU0:CRS-1(admin)#upgrade rommon b all disk0
Thu Jan 21 14:49:16.608 PST
Cisco CRS-1 Carrier Routing System to Cisco CRS-3 Carrier Routing System Migration Guide
A P P E N D I X
A
A-1