This avoids downtime and interruption of service The running image is modified in-place or in-service SMU is NOT an upgrade path from release X to release Y SMU is NOT an upgrade path from release X to maintenance release X.1

SMU is a method to fix bugs in an existing release, and allows the application of a PSIRT fix in an existing release. Reducing the time and scope of the testing required. This is based on rules/limitations for a SMU change-set.Īn SMU provides a significant benefit over classic IOS software as it allows you to address the network issue quickly while The Cisco IOS XE platform internally validates the SMU compatibility and does not allow you to install non-compatible SMUs. All defects fixed by SMUs are then automatically integrated into the SMUs are not an alternative to maintenance releases. Major, minor, and maintenance versions they upgrade. SMU versions are synchronized to the package Provided on a per release, per component basis and is specific to the platform. If the router is booted up in install mode, SMU installation will keep From Cisco IOS XE Release 17.9.x, SMU installation willīe stopped if the router is booted up in bundle mode. SMU installation was supported in both bundle boot and install mode. To a released image for a specific defect in order to respond to immediate issues.

The Software Maintenance Upgrade (SMU) is a package that can be installed on a system to provide a patch fix or security resolution

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