Cisco CRS-1 - Carrier Routing System Router Migration Guide

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Cisco CRS-1 Carrier Routing System to Cisco CRS-3 Carrier Routing System Migration Guide
OL-13669-03
Chapter 1 Migrating to a Cisco CRS-3 Carrier Routing System
Cisco IOS-XR Flash Disk Requirements for Migration to CRS-3
Cisco IOS-XR Flash Disk Requirements for Migration to CRS-3
You can only upgrade your filesystem to FAT32 using the CLI specifed in this section if you are running
Cisco
IOS XR software Release 3.8.2 or above.
If you are running a release of Cisco IOS XR software earlier than 3.8.2 please refer to Upgrading Your
File System From FAT16 to FAT32 in Appendix A, “Turbo Boot Procedure” for formatting the File
system to FAT32 using KSH.
Cisco IOS XR software Release 4.0.X (PX) requires at least a 2GB flash disk for installation or upgrade.
So prior to upgrading your current IOS XR software to IOS-XR Software Release 4.0.X (PX), you will
need to upgrade the flash disk to either 2GB or 4GB.
The size of the image is significantly higher on the Cisco CRS-3 because x86 support is now included
in addition to the PPC support. A FAT32 formatted flash disk will decrease the required space for the
file system significantly. It is highly recommended to use a 4G flash disk with FAT-32 file-system on the
Cisco
CRS-3.
Checking your Existing Flash Disk Size
Execute the show filesystem command to check the actual disk0 size:
RP/0/RP0/CPU0:Router#sho filesystem
Wed Feb 11 15:28:57.401 PST PST
File Systems:
Size(b) Free(b) Type Flags Prefixes
- - network rw qsm/dev/fs/tftp:
- - network rw qsm/dev/fs/rcp:
- - network rw qsm/dev/fs/ftp:
1043456 1005568 dumper-lnk rw qsm/dumper_nvram:
39929724928 39605428224 dumper-lnk rw qsm/dumper_harddisk:
1004994560 184500224 dumper-lnk rw qsm/dumper_disk1:
1024606208 423608320 dumper-lnk rw qsm/dumper_disk0:
62390272 49101348 dumper-lnk rw qsm/dumper_bootflash:
39929724928 39605428224 harddisk rw harddisk:
1024606208 423608320 flash-disk rw disk0:-----
1004994560 184500224 flash-disk rw disk1:
1043456 1005568 nvram rw nvram:
62390272 49101348 flash rw bootflash:
In the example shown, the flash disk (disk0) size is 1 Gig.
If the disk size is smaller than 2Gig you will need to upgrade the flash disk.
The procedures for flash disk upgrade are detailed in the Cisco XR 12000 Series Router and Cisco CRS-1
Router Flash Disk Upgrade Tasks document online here:
http://www.cisco.com/en/US/docs/routers/xr12000/xr_line_cards/flashdisk/flashdisk.html
Flash Disk Upgrade Process to 4GB
Inserting the 4GB Flashdisk
The first step is to insert a 4GB Cisco Authorized Flash disk into slot disk1 of Active and Standby RP.
After Insertion verify the 4GB disk is accessible from RP

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English