The new flexible licenses can be allocated as needed across the globe. Cisco says service providers can now take advantage of the Cisco Crosswork Network Automation portfolio, a closed-loop, mass-scale automation solution designed for multi-vendor networks, and the company says the improvement makes Cisco the leader in both network agility while optimizing cost.
Homepage This page's url is: Model Citizen Cisco Systems Chairman and CEO Chuck Robbins has been peppering his public comments with '5G' for months, and now the networking kingpin is rolling out upgraded edge routers and automation software available on a consumption-based purchasing model. Here are the four most important things to know about the newly upgraded flagship router. The Market The number of 5G connections is expected to exceed 25 million by , according to Cisco. New And Improved As the long-running flagship of Cisco's routing line, the ASR has found a home among thousands of enterprise, public sector and service provider customers, and has managed billions of network connections, Cisco says.
Payment Options Cisco is introducing the upgraded ASR as service providers build out the capabilities necessary to support multiple services and rapid shifts in network traffic. Mobility Head-To-Head: Package types include:. SMUs only. DDTS is the method used to track known bugs and the resolutions or workarounds for those issues. These reorganized packages are identified by the -p in the filename.
These packages are not compatible with packages released prior to Release 4. When upgrading to Release 4. Identifies images that are compatible with hardware that uses the x86 architecture.
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To add an optional package or upgrade or downgrade a package, you must copy the appropriate PIE file to a local storage device or to a network file server to which the router has access. Flash disk0: Flash disk1: Before copying PIE files to a local storage device, use the dir command to check to see if the required PIE files are already on the device. The general procedure for adding optional packages, upgrading a package or package set, or downgrading packages on the router is as follows:.
Commit the current set of packages using the install commit command.
Figure 1 illustrates key steps in the package management process. Use the install add command to unpack the package software files from a PIE file and copy them to the boot device usually disk0: The disk that holds the unpacked software files is also known as the boot device. By default, flash disk0: To use an alternate storage device, such as flash disk1: Remember that all RSPs in a system must use the same boot device.
If the boot device on the primary RSP is flash disk0: Before you activate a package on the router, you can verify the type of upgrade that is required for the package and whether the package requires a router reload or not. Use the show install package pie detail command in admin mode. Software packages remain inactive until activated with the install activate command. After a package has been added to the router , use the install activate command to activate the package or SMUs for all valid cards. Information within the package is used to verify compatibility with the target cards and with the other active software.
Actual activation is performed only after the package compatibility and application programming interface API compatibility checks have been passed. To activate a package on your router, use the install activate command in administration EXEC mode. The install activate command also activates the package on all administration plane nodes and resources, including service processors SPs , fabric SCs, fan controllers, alarm modules, and power modules.
To install multiple packages or software maintenance upgrades SMUs with a single command, use the install activate command and either specify up to 16 packages by repeating device: Some SMUs may require a reload. If the operation requires a node reload, the user is prompted before the installation operation occurs.
To install all packages that were added in a specific install add operation, use the install activate command with the id add-id keyword and argument, specifying the operation ID of the install add operation. You can specify up to 16 operations in a single command. To add and activate a package with a single command, use the install add command with the activate keyword from administration EXEC mode. In-service software upgrade ISSU provides the ability to upgrade the router software with no outage on the control plane and minimal outage generally within several seconds on the forwarding plane.
After the software portion upgrades itself and stages the information needed to upgrade the hardware portion, it performs a flush to replace the V1 image with the V2 image. This flush generally takes no more than several seconds and that is the only time that there is a disruption of service. The exact time required for the flush depends on the hardware configuration of your router. The ISSU process can be performed in prompted mode, to ensure and verify that there is no service degradation throughout the process.
Or, the ISSU process can be performed unprompted, where the phases are executed automatically with no user intervention. ISSU provides the ability to upgrade the system from one major version to another version with minimal impact on traffic or forwarding. There are two sets of images involved in the ISSU procedure — the first one is the image set which currently runs on the system V1 ; the second one is the image set containing all the software upgrades and fixes that you want to apply to the system using ISSU V2.
The set of images can be a combination of a base image for example, asr9k -mini. ISSU does not allow packages with different version numbers to co-exist in the system. Also, if you have a software package installed in V1, you must install a compatible package for V2. Use the command show install active command to view the names of active software packages running on your system:. Your V2 image set should include all these packages. Even if one or more of these packages has not changed, you must install all the packages again.
New software image is added or unpacked on the router. The software addition is performed using the install add command. Actual software upgrade of the router is performed using iMDR. The upgrade includes three phases: These are described later in this section. When the upgrade is successfully complete, the new software is committed to the configuration using the commit command. The new image V2 is downloaded to all nodes in the router. The new image is checked for compatibility to ensure that the router can be upgraded. If the image is found to be incompatible, or an outage is warranted, you are notified.
At the start of the Load phase, the router configuration mode is locked, and you cannot perform any configuration on the router until ISSU completes the phase. At the end of this stage, all standby nodes run V2 and all active nodes including all line cards still run the original software images V1. Any aborting of the upgrade process during the Load phase, either intentionally user abort or due to failures, results in a hitless rollback and each standby or upgraded node is reloaded with V1.
The RSP pair completes an active to standby switchover. In parallel, each line card undergoes an iMDR to complete the software upgrade.
The 4 Most Important Factors In Cisco's ASR Upgrade And 5G Push
This is where non-redundant hardware in the system or line cards are upgraded. These activities are performed:. Layer 2 spoofers are needed to keep a few key protocols alive and well during the Run phase; these spoofers send hello and keep-alive messages, and respond in turn. The Layer 2 spoofers are started here, and they take over from their main software counter parts.
The software portion of the line cards is brought down and brought up with a new non-minimum boot image MBI image. The cards begin to load the new version of software and stage the V2 information in memory. Meanwhile, the hardware portion of the line card continues to forward packets using the V1 information. The software portion of the line cards starts to build the V2 information and stores this in the Resource Shadow Memory RSM cache so that the hardware portion can use this after the flush occurs.
When the software portion of the line card has completed its upgrade to V2 and has staged all of the new software image information it needs in memory, the switchover of the hardware to the new software version occurs. The flush, or the final switch from V1 to V2, on the hardware portion of the line card is what determines the length of the router outage. This process should take less than six seconds and is constrained by the software configuration and scale of the router. Generally, this takes less than six seconds.
Overview of Cisco IOS XR Software Packages
Any unsupported hardware that was previously shut down is now brought back online automatically, and it loads the new version of software. Any abort of the upgrade process during the run phase results in a router reload with the original software image.
This concludes the ISSU process and the new software runs on all nodes in the system. From this point onwards, if you need to revert to the original software, you must use either the install rollback command if you have committed the upgrade or the reload location all command if you have not committed the upgrade yet.
A software maintenance update SMU delivers a software change to the user in the least possible time. ISSU minimizes the operational impact that a user experiences. Certain changes to the Kernel, ROMMON, memory carving, and other infrastructure areas cannot be achieved using a warm reload, and in such instances the router must undergo a standard reload to load such a SMU. There are three types of SMUs:.
These SMUs can also be installed using the parallel reload method by omitting the issu keyword in the install activate command. The SMU type can be identified by viewing the output of the show install package pie detail command. Mixed SMU types can only be combined in the same activation if parallel reload is used as the activation type.
It is recommended that you to use these commands within the maintenance window; there may be minimal traffic disruption. Not all combinations of SMUs can be installed in one step. This table lists the installation behavior when the SMU activation is done both with, and without, the issu keyword:.
Not supported, but allowed. The recommended procedure is to install the SMUs in two steps: To upgrade a package, activate the latest version of the package; the previous version is automatically deactivated. To downgrade a package, activate the previous version of the package; the latest version is automatically deactivated. When a package is activated on the router , it becomes part of the current running configuration.
To make the package activation persistent across reloads, enter the install commit command in administration EXEC mode. If the system is restarted before the active software set is saved with the install commit command, the previously committed software set is used. Each time a package is activated or deactivated, a rollback point is created that defines the package set that is active after the package activation or deactivation. The software also creates a rollback point for the last committed package set. If you find that you prefer a previous package set over the currently active package set, you can use the install rollback command to make a previously active package set active again.
In installations on platforms where Cisco IOS XR Software is supported, only a single disk is used as an install device; that is, either disk0 or disk1. When multiple packages are installed on a single disk, it results in space constraints. To resolve this space limitation, the disk supported for the install operations has been extended to another disk called the disk1. When installing multiple packages, this feature enables you to choose between disk0 and disk1. To add packages to a specific disk name, use the install media command in the admin configuration mode.
Before enabling the addition of disk1 through the install media command, the disk mirroring feature should be explicitly disabled. For details regarding disk mirroring, see the Disk Mirroring chapter. All single version packages should be installed into one disk; that is, either disk0 or disk1. When downgrading to an image that does not support extended disk, the rollback points of the extended disk will not be available on the downgraded image. For example, assume a case where the version1 V1 image does not support the extended disk functionality and version2 V2 image supports the functionality.
Upgrading from V1 disk0 to V2 disk1 , in such a case, makes the rollback points of V1 available on V2. However, when downgrading from V2 disk1 to V1 disk0 , the rollback points of V2 will not be available on V1. For more information about the rollback feature and rollback points, see the Upgrading and Managing Software chapter. In this case, SMU A is redundant and can be deactivated to clean up the software package.
To deactivate all the fully superseded SMUs, use the install deactivate superseded command in the admin mode. During any software package upgrade in Cisco IOS XR Software, two versions of the packages get stored, both the previous version and the upgraded version. To address this, a new optional keyword, ignore-pkg-presence-check , is added to the install activate command, which allows upgrading with lesser number of packages. For example, assume a case where version1 V1 of the software consists of packages A, B, C, and D, and you want to upgrade to the version2 V2 with only 3 packages A, B, and C.
The ignore-pkg-presence-check option allows only packages A, B, and C to be upgraded to V2 and deactivates package D of V1. Thus, an explicit deactivation of package D is not required and the user can add package D of V1 after upgrading to V2. To upgrade software with lesser number of packages, use the install activate [ignore-pkg-presence-check] command in the admin mode.
The ignore-pkg-presence-check keyword is supported only with the install activate command and is not supported with the install add activate command. When you upgrade using the ignore-pkg-presence-check option, the deactivation of packages always happens synchronously, using the synchronous keyword in the install deactivate command. To upgrade a package that is currently active on your router , add and activate a newer version of the same package see Figure 1.
The older version of the software package is deactivated automatically. These actions are permitted only after the package compatibility checks and API version compatibility checks have been passed. Deactivated packages are not removed from the router. To remove inactive package files, use the install remove command. Upgrading or downgrading a software package can cause a process to restart or a new process to start.
Use the test option to preview the impact of the package activation. To downgrade a software package, activate an older version on one or more cards for which 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 and API version compatibility checks have been passed.
See the Related Topics section for links to more information. ISSU is not supported during a software downgrade. Downgrading the software package is generally traffic impacting and requires a router reload. Each package version change 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:. Activation or deactivation of a package can have an immediate impact on the system. The system can be affected in the following ways:. You must address any issues that result from the revised configuration and reapply the configuration, if necessary.
When activating and deactivating packages, use the test option to test the effects of a command without impacting the running system. After the activation or deactivation process completes, enter the show install log command to display the process results. By default, the CLI prompt is returned to the screen before the installation operation is complete, which allows you to enter other commands that are not installation commands.
If additional installation requests are attempted before the first operation is complete, they are not run. To delay the return of the CLI prompt until an installation operation is complete, enter the install command with the synchronous keyword. For example:. To determine if an install command is currently running, enter the show install request command. The install log provides information on the history of the installation operations. Each time an installation operation is run, a number is assigned to that operation. By default, the install log stores up to 50 entries.
The 4 Most Important Factors In Cisco's ASR 9000 Upgrade And 5G Push
Use the clear install log-history command to reset the number of entries to any value from 0 to Cisco Community: Technology and Support: Service Providers: Service Providers Documents: XR OS and Platforms. Babu Peddu. See this chapter for install operation instructions. ISSU installation example: Latest Contents. Created by Carlos A. Silva on