Cisco CRS-1 - Carrier Routing System Router - Page 248

B-4
Cisco CRS-1 Carrier Routing System to Cisco CRS-3 Carrier Routing System Migration Guide
OL-13669-03
Appendix B Cisco CRS-1 to Cisco CRS-3 Upgrade Decision Trees
Figure B-3 Upgrading from Cisco IOS XR software Releases That Support FPD Auto-Upgrade
(Release 3.8.4 and Release 3.9.1) to Cisco IOS XR software Release 4.0.1
disk0: 4G
FAT16
2G/2G
FAT16FAT32
3.5G/0.5G
rommon2.01
PIE upgrade to
4.0.1-px
rommon2.01
PIE upgrade
to 4.0.1-px
FAT16FAT32
rommon2.01
PreStaged
Flash or RP
rommon2.01
PreStaged
Flash or RP
Keep current
FAT
Migrate
to 4G
mandatory
Migrate
to 4G
recommended
disk0: 2G
Keep 2G card
rommon2.01
PIE upgrade
to 4.0.1-px
rommon2.01
PIE upgrade
to 4.0.1-px
FPD upgrade
(reload line
cards)
FPD upgrade
(reload line
cards)
disk0: 1G
Reload
246179
Prior to this operation
-create directory in bootflash:
-copy MBI 4.0.1-px image
During operation
-change BOOTVAR
disk0: 4G
FAT32
3.5G/0.5G
rommon2.01
PIE upgrade to
4.0.1-px
XR
3.8.4/3.9.1
In 3.8.4 and 3.9.1
fpd auto-upgrade
is supported
Supported but we don’t
recommend to keep FAT16