An engineering SMU is provided in order to test the validity of a fix in advance of the commit of the actual fix or, potentially, in advance of the delivery of a formal production SMU.
Engineering SMUs are removed after testing is complete. Bridge SMUs are also referred to as mandatory upgrade or downgrade SMUs because they must be installed before an upgrade or downgrade.
This simplifies the software delivery model since a single SMU can fix many individual issues. The bug fixes that are included within an umbrella SMU may or may not be limited to a single component, although cross-functional umbrella SMUs that cross package boundaries are rare.
Umbrella SMUs are provided for platform dependent fixes that are considered mission critical. Umbrella SMUs are a collection of fixes that should be applied in order to maintain stability on any base software release. The SPs are designed so that they include all of the bugfixes in a single package in order to ease software maintenance. Note : Only one SP should be active on the router at a time. In order to install the latest SP, you must add, install, and commit the latest SP.
In this example, SP2 is added to a router that already runs SP1. The presence of SP1 is not required before SP2 works. In order to verify if an SP currently runs on your system, enter the show install active summary command:.
Note : The SP activation requires a system reload. Examples include:. Email iosxr-file-exchange cisco. Cisco recommends you review the associated Readme file before you install a SMU. Here is an example of the Readme file for asr9k-px SMU requests are evaluated on a case-by-case basis.
Directors or approved designates have the approval authority. The decision is based on the business justification, customer impact, and the engineering feasibility of a point fix. SMUs that are not proactively created by the Business Unit must be formally requested by a network administrator.
This information is required when a SMU is requested:. If a SMU is rejected, the reasons are documented, and the requester is informed about the decision.
The majority of delays occur during system integration testing, because the SMU is subject to the particular issue it fixes. The SMU is also tested in a multi-dimensional test scenario in order to ensure there are no collateral failures in other components. An important concept to understand is that SMUs are committed to a software lineup particular to that release. If there are two SMUs in the same overlapping component, there is no need to run them both at the same time.
SMU Y, while committed to the lineup, inherently takes the changes from X already. If you are already running the superceded SMU, you can remove it in order to save space; however, if both the SMUs are installed, that does not cause a problem.
So, loading Z would negate the changes applied by Y. Partial supercede does not always mean there has to be a prerequisite dependency and depends on the code fix. SMU Y is a partial supercede over X because there are some overlapping components. You must install both SMUs in order to get both fixes. That means that, in order to run Y, you need X as well. Certain fixes might have a dependency on a previously posted SMU for a complete solution. So, by definition, if a new SMU contains fixes for separate components within the same package, and if there is an existing SMU that contains at least one, but not all, of these components, the first SMU is not completely superceded by the new SMU.
Both the old and new SMU are required for a complete fix. SMUs that are fully superceded are removed from Cisco. A composite SMU can contain multiple components. This output helps identify what SMU packages have been superceded by other active packages and can be deactivated. The line items listed can be deactivated, but not the entire composite SMU. There is no problem if you continue to operate with SMU packages active that have been superceded by other active SMUs.
Use the install add operation in order to add a SMU to the file system. The install add operation adds all the SMU files to the filesystem, but does not cause the SMU components to run or cause reloads or processes to restart.
The SMU can be copied to a hardisk: or other local media first, then be added from that local media. We have not planned to use the Cisco Software Manager so far. As you have recommended, I can see for the version 6. For the version 6.
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Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. The VM typically emulates a physical computing environment, but requests for CPU, memory, hard disk, network, and other hardware resources are managed by a virtualization layer which translates these requests to the underlying physical hardware. A hypervisor, also called a virtual machine manager VMM , is a piece of computer software, firmware, or hardware that creates and runs VMs.
A hypervisor enables multiple operating systems to share a single hardware host machine. While each operating system appears to have the dedicated use of the host's processor, memory, and other resources; the hypervisor controls and allocates only the required resources to each operating system and ensures that the operating systems VMs do not disrupt each other.
A computer on which a hypervisor is running one or more VMs is defined as a host machine. Each VM is called a guest machine. The hypervisor presents the guest operating systems with a virtual operating platform and manages the execution of the guest operating systems. The demo image, provided without support, is suitable to deploy on a laptop or on a server that meets the requirements outlined below.
These interfaces function as follows:. Demo Locked—A portable, downloadable VM that is hamstrung to limit its usefulness, but enables a number of internal and external use cases including Cisco IOS XR training and familiarization, demonstrations, sales tool, and early field trial EFT for control plane features. Production—Provides a platform for Cisco IOS XR based virtual appliances, such as a virtualized route reflector vRR ,or as a network positioning system virtual appliance.
In such situations, to avoid configuration loss during upgrade, the following steps can be optionally done before activating packages:. Force a commit update by using the reload command. Press n when the confirmation prompt appears:. In some cases other activity may preclude a reload.
The following message may display:. If you receive this message wait and then retry the command after some time. Production SMUs are intended for use in a live network environment and are formally supported by the Cisco TAC and the relevant development teams.
Software bugs identified through software recommendations or Bug Search Tools are not a basis for production SMU requests. To receive timely, relevant information from Cisco, sign up at Cisco Profile Manager. To submit a service request, visit Cisco Support.
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Cisco Bug Search Tool BST is a web-based tool that acts as a gateway to the Cisco bug tracking system that maintains a comprehensive list of defects and vulnerabilities in Cisco products and software. BST provides you with detailed defect information about your products and software. Skip to content Skip to search Skip to footer. Available Languages. Download Options. Updated: December 18, Use faceted search to locate content that is most relevant to you.
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Table 1.
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