Downgrading Packages; Impact Of Package Version Changes; Impact Of Package Activation And Deactivation - Cisco CRS-1 - Carrier Routing System Router Getting Started Manual

Chapter 6 Managing Cisco IOS XR Software Packages
Figure 6-4

Downgrading Packages

To downgrade a software package, activate an older version on one or more cards where that package is
already active. The newer version of the same software package is deactivated automatically. These
actions are performed only after the package compatibility checks have passed.
Inactive packages are not removed from the storage device. To delete an inactive package from the disk,
enter the install remove command. See the
page 6-29

Impact of Package Version Changes

Each package upgrade has a different impact on the operation of the router, depending on the type of
package and whether the upgrade is for a major, minor, or maintenance release. The following resources
can provide more information on the impact of a package version change:
•
•
•

Impact of Package Activation and Deactivation

Activation or deactivation of a package can have an immediate impact on the system. The system can be
affected in the following ways:
•
•
•
•
•
Example of a Minor Release Package Upgrade
MPLS 2.0.0
Routing 2.0.0
Forwarding 2.0.0
Base 2.0.0
for more information.
See the "Standard PIE Filenames and Version Numbers" section on page 6-11
on the typical impact for major, minor, and maintenance releases.
For specific information regarding the impact of an upgrade, consult the release notes for the
package release, and test the impact of the package activation by adding the test option to the install
activate command.
The IOS XR Software Selector tool also contains information on package version compatibility. See
the "Selecting and Obtaining Software Packages" section on page 6-15
online compatibility resources.
New processes may be started.
Running processes may be stopped or restarted.
All processes in the cards may be restarted. Restarting processes in the cards is equivalent to a soft
reset.
The cards may reload.
No impact: no processes in the card are affected.
MPLS 2.0.1
Routing 2.0.1
Forwarding 2.0.0
Base 2.0.0
"Removing Inactive Packages from the Router" section on
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
Information About Package Management
for more information
for information regarding
6-19