CHAPTER 19
Performing Software Maintenance Upgrades
(SMUs)
This chapter includes the following sections:
• About SMUs, on page 189
• Package Management, on page 190
• Prerequisites for SMUs, on page 190
• Guidelines and Limitations for SMUs, on page 190
• Performing a Software Maintenance Upgrade for Cisco NX-OS, on page 191
• Preparing for Package Installation, on page 191
• Copying the Package File to a Local Storage Device or Network Server, on page 192
• Adding and Activating Packages, on page 193
• Committing the Active Package Set, on page 194
• Deactivating and Removing Packages, on page 194
• Displaying Installation Log Information, on page 195
About SMUs
A software maintenance upgrade (SMU) is a package file that contains fixes for a specific defect. SMUs are
created to respond to immediate issues and do not include new features. Typically, SMUs do not have a large
impact on device operations. SMU versions are synchronized to the package major, minor, and maintenance
versions they upgrade.
The effect of an SMU depends on its type:
• Process restart SMU-Causes a process or group of processes to restart on activation.
• Reload SMU-Causes a parallel reload of supervisors and line cards.
SMUs are not an alternative to maintenance releases. They provide a quick resolution of immediate issues.
All defects fixed by SMUs are integrated into the maintenance releases.
For information on upgrading your device to a new feature or maintenance release, see the Cisco Nexus 3500
Series NX-OS Software Upgrade and Downgrade Guide.
Cisco Nexus 3548 Switch NX-OS System Management Configuration Guide, Release 7.x
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