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Cisco CRS-1 Carrier Routing System to Cisco CRS-3 Carrier Routing System Migration Guide
OL-13669-03
CONTENTS
Preface ix
Changes to This Document ix
Obtaining Documentation, Obtaining Support, and Security Guidelines ix
Migrating to a Cisco CRS-3 Carrier Routing System 1-1
Contents 1-1
CRS-1 to CRS-3 Software Migration Compatibility Matrix 1-2
Prerequisites for Upgrading IOS-XR Software Prior to Migrating to a Cisco CRS-3 Carrier Routing
System
1-3
ROMMON Upgrades 1-4
OPTION-A 1-4
OPTION-B 1-4
Cisco IOS-XR Flash Disk Requirements for Migration to CRS-3 1-5
Flash Disk Upgrade Process to 4GB 1-5
Inserting the 4GB Flashdisk 1-5
Disk Formatting 1-6
Verifying the Disk File System 1-6
Setting Up Disk Mirroring 1-6
Swapping Mirrored Disks 1-6
Verifying Standby RP Disk Upgrade 1-6
Performing Switchover 1-7
Upgrading the Standby RP 1-7
File System Upgrade Procedure for 2GB Flash Disks 1-7
Verifying that the System Meets RP Memory Requirements 1-9
IOS-XR Software Upgrade Procedure 1-9
Obtain the Required PIE Files 1-9
New Image Name Changes for 4.0 and Onwards 1-10
Verify System Stability 1-10
Additional Pre-upgrade System Checks 1-12
Upgrading to Cisco IOS XR Software Release 4.0.X(PX) Before Migrating to Cisco CRS-3 Hardware 1-14
Post-Upgrade Procedure 1-16
Cisco CRS-3 Carrier Routing System and CRS-1 Carrier Routing System Hardware Compatibility
Matrix
1-20
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