6-17
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
Chapter 6 Managing Cisco IOS XR Software Packages
Information About Package Management
Note The internal flash disk (disk0:) is used by the system, and should never be manipulated by the user. In
addition, the hard disk is used to store system files, such as logs and user files. It should also not be used
to store installation PIE files. See the “File Storage” section on page 1-11 for more information on router
memory and file storage options.
Network Server: Downloading Updated PIE Files
Installable PIE software packages can also be downloaded from a TFTP, an FTP, or an rcp server to the
archive on disk1:. Contact your system administrator for the location and availability of your network
server. For information on the supported download protocols and command syntax to copy or install
packages, see the “Copying, Adding, and Activating Packages” section on page 6-22.
Information About Package Management
This section describes the following concepts for managing Cisco IOS XR software packages:
• Overview of Package Management, page 6-17
• Upgrading Packages, page 6-18
• Downgrading Packages, page 6-19
• Impact of Package Version Changes, page 6-19
• Impact of Package Activation and Deactivation, page 6-19
• Controlling install Command Operation, page 6-23
• Activation and Deactivation Prerequisites, page 6-20
Overview of Package Management
Figure 6-3 illustrates the packet Management process.
Figure 6-3 Process to Add, Activate, and Commit Cisco IOS XR Software Packages
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Flash disk0:
(internal)
Active
Software
Configuration
Committed
Software
Configuration
Install Activate
Install Add
Install Commit
TFTP, FTP, or
RCP file server
Inactive
Software
Install Deactivate
Flash disk1:
(removable)
Archive of
PIE files
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