![]() Recommended production SMUs are critical fixes that are strongly recommended in order to maintain the proper function of the device. Mandatory production SMUs are critical fixes that are mandatory in order to maintain the proper functionality of the device. Cisco reserves the right to maintain strict control over Production SMU delivery, to maintain the stability of the code base and prevent collateral damage. Cisco continuously reviews software bugs that affect supported maintenance releases and provides Proactive Production SMU requests when Cisco deems them necessary. Software bugs identified through software recommendations or Bug Search Tools are not a basis for Production SMU requests. Production Software Maintenance Updates (SMU) are provided on user requests on supported maintenance releases for service that impacts issues observed in production or during maintenance release validation, for which there is no feasible workaround. Production SMUs are characterized by package types, impact and criticality, and restart or installation impact type. Production SMUs are provided for critical live operation issues on a supported maintenance release. Production SMUs are intended for use in a live network environment and are formally supported by the Cisco TAC and the relevant development teams. Types of SMUs Production SMUĪ production SMU is an SMU that is formally requested, developed, tested, and released. SMUs are Package Installation Envelope (PIE) files that are similar in functionality and installation to the feature PIEs for manageability (MGBL), Multiprotocol Label Switching (MPLS), and Multicast. Cisco strongly encourages you to upgrade to the subsequent maintenance release. The fix provided by the SMU is then integrated into the subsequent Cisco IOS XR software maintenance release. SMUs are provided for urgent, “showstopper” issues only. An SMU built for a P image cannot be used on a system built for a PX image. An SMU built for Cisco IOS XR software Release 4.2.1 cannot be applied to a system with Cisco IOS XR software Release 4.2.3. This means that an SMU for a CRS router cannot be installed on an ASR 9000 router. This is a substantial difference from the classic Cisco IOS software, which has no capability to apply a single fix in the base current release.Īn SMU is built on a per release and per component basis and is specific to the platform. When the system runs into a software deficiency (bug), Cisco can provide a fix for the particular problem in the base current Cisco IOS XR release. The concept of an SMU applies to all Cisco IOS XR hardware platforms.Ī Cisco IOS XR SMU is an emergency point fix, which is positioned for expedited delivery and which addresses a network that is down or a problem that affects revenue. Cisco IOS XR SMU OverviewĪn SMU is a software patch that is installed on the Cisco IOS XR device. Note: Refer to the Cisco Software Manager User Guide for more information. x was discontinued after the introduction of CSM 3. The CSM supports all Cisco platforms that run Cisco IOS XR. ![]() x is a standalone Java application that can be installed on Microsoft Windows, Macintosh, and UNIX systems. Note: Refer to the Cisco Software Manager v3.3 information page for more information. Through CSM Server users can orchestrate the installation of any Cisco IOS XR software package, that includes SMUs. x is a server application that can be installed on various Linux distributions. The CSM can connect to multiple devices and provide SMU management for multiple Cisco IOS XR platforms and releases. The Cisco Software Manager (CSM) provides Cisco IOS XR SMU recommendations to users and reduces the effort that it takes for you to manually search, identify, and analyze SMUs that are needed for a device. Cisco Carrier Routing System (CRS-1 and CRS-3).This document can also be used with these hardware versions: If your network is live, ensure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. This document is not restricted to specific software and hardware versions. ![]() Cisco IOS XR software installation and upgrade procedures.Prerequisites RequirementsĬisco recommends that you have knowledge of these topics: ![]() This document describes Software Maintenance Updates (SMUs) for routers that run Cisco IOS ® XR software.
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