Cisco Systems IOS XR manual Saving and Loading Target Configuration Files, Deleting CommitIDs

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Chapter 3 Configuring Additional Router Features

Saving and Loading Target Configuration Files

To load rollback configuration changes from the current configuration to a specific session, enter the load rollback changes to commitId command:

RP/0/0/CPU0:router(config)# load rollback changes to 1000000068

Building configuration...

Loading.

233 bytes parsed in 1 sec (231)bytes/sec

To load rollback configuration changes from the current configuration to a specified number of previous sessions, enter the load rollback changes last commit-rangecommand:

RP/0/0/CPU0:router(config)# load rollback changes last 6 Building configuration...

Loading.

221 bytes parsed in 1 sec (220)bytes/sec

In the preceding example, the command loads the rollback configuration changes for the last six commitIDs.

To load the rollback configuration for a specific commitID, enter the load rollback changes commitId command:

RP/0/0/CPU0:router(config)# load rollback changes 1000000060

Building configuration...

Loading.

199 bytes parsed in 1 sec (198)bytes/sec

Deleting CommitIDs

You can delete the oldest configuration commitIDs by entering the clear configuration commit command in EXEC mode. The clear configuration commit command must be followed by either the amount of disk space you want to reclaim or number of commitIDs you want to delete. To reclaim disk space from the oldest commitIDs, enter the clear configuration commit command followed by the keyword diskspace and number of kilobytes to reclaim:

RP/0/0/CPU0:router# clear configuration commit diskspace 50

Deleting 4 rollback points '1000000001' to '1000000004'

64 KB of disk space will be freed. Continue with deletion?[confirm]

To delete a specific number of the oldest commitIDs, enter the clear configuration commit command followed by the keyword oldest and number of commitIDs to delete:

RP/0/0/CPU0:router# clear configuration commit oldest 5

Deleting 5 rollback points '1000000005' to '1000000009'

80 KB of disk space will be freed. Continue with deletion?[confirm]

Saving and Loading Target Configuration Files

Target configurations can be saved to a separate file without committing them to the running configuration. Target configuration files can then be loaded at a later time and further modified or committed. The following sections describe how to save and load target configurations:

•Saving the Target Configuration to a File, page 3-10

•Loading the Target Configuration from a File, page 3-10

Cisco IOS XR Getting Started Guide

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Contents Contents Configuring Additional Router FeaturesConfigure Configuring Telnet, HTTP, and XML Host ServicesDomain name-server ipv4-address Commit End Show hosts Related Topic Document TitleFollowing example, the host services are enabled Managing Configuration History and RollbackInstallation and activation of the Manageability Descriptions of the Telnet commandsDisplaying the CommitIDs Displaying the Configuration History Log Show configuration commit list command displayRP/0/RP0/CPU0router# show configuration commit list Previewing Rollback Configuration Changes Displaying the Configuration Changes Recorded in a CommitIDConfiguration commit history RP/0/0/CPU0router# show configuration commit changesRolling Back the Configuration to a Specific Rollback Point RP/0/RP0/CPU0router# show configuration rollback changes toRP/0/RP0/CPU0router# rollback configuration to RP/0/RP0/CPU0router# rollback configuration last Loading the Configuration Changes for a Specific CommitIDDeleting CommitIDs Saving and Loading Target Configuration FilesSaving the Target Configuration to a File Loading the Target Configuration from a FileLoading an Alternative Configuration at System Startup Alarm Logging Correlation Configuring Logging and Logging CorrelationLogging Destination Command Global Configuration Mode Logging Locations and Severity LevelsConfiguring Basic Message Logging Command or Action PurposeExample Commits the target configuration to the router When a severity level is specified, onlyRunning configuration Ends the configuration session and returns toCommands used to configure logging Configuration of system loggingConfiguration of alarm correlation and generating Creating and Modifying User Accounts and User GroupsCommand Description Configuring User AccountsPassword 0 7 password Creating Users and Assigning GroupsEnd or commit Configuration Limiting Modify user groups, and configure remote AAA accessCreate users, assign users to user groups, create Default Absolute Static Route Configuration LimitsMaximum Configuration Command Show Current Settings Command Exec ModeOSPFv2 and v3 Configuration Limits IS-IS Configuration LimitsLimit Mode Exec Mode Maximum-redistributed-prefixes n Show isis adjacencyMaximum interfaces n Show ospf Maximum paths n Show running-config router ospfMaximum redistributed-prefix n Show ospf If the maximum pathsMaximum Interfaces for Each Ospf Instance Default Absolute Maximum Configuration Command BGP Configuration LimitsFeature Limit Description Maximum-prefix n Show bgp neighbor IPaddressMaximum paths Maximum-paths n Show running-configRouting Policy Language Line and Policy Limits RP/0/RP1/CPU0router# show rpl maximum Limit Global Configuration Mode Exec Mode Multicast Configuration LimitsOther Configuration Limits Mpls Configuration Limits
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IOS XR specifications

Cisco Systems IOS XR is an advanced operating system designed specifically for high-performance routers and service provider networks. It serves as the backbone for many of Cisco's high-end routing platforms, enabling service providers to manage their networks with increased efficiency, flexibility, and scalability.

One of the main features of IOS XR is its modular architecture. This allows for the independent operation of various components within the OS, facilitating the deployment of new features and updates without affecting the overall stability of the system. This modularity ensures that service providers can implement rapid changes and enhancements while maintaining service continuity.

Another characteristic of IOS XR is its support for 64-bit architecture, which provides enhanced performance and the ability to manage larger amounts of data. This is particularly beneficial for service providers that deal with high traffic volumes and require robust data processing capabilities. The utilization of 64-bit technology also enables the operating system to utilize memory more efficiently, allowing for greater scalability.

IOS XR incorporates advanced technologies such as Distributed System Architecture (DSA) and Multiple Routing Instances (Merging Routes). DSA allows for the distribution of routing processes across multiple hardware resources, maximizing performance and redundancy. Multiple Routing Instances enable operators to create separate logical routing tables for different services, improving isolation and efficiency in managing network traffic.

The operating system also focuses heavily on security, featuring extensive encryption methods and access controls to safeguard network resources. IOS XR supports various authentication protocols, ensuring secure access to routers and switches. In addition, the OS includes comprehensive logging and monitoring capabilities, allowing network administrators to track activities and respond quickly to potential threats.

Another critical aspect of IOS XR is its adherence to the principles of service-oriented architecture (SOA). This approach permits the development of applications and services that can operate independently, fostering innovation and enabling service providers to tailor their offerings based on customer demands.

Ultimately, Cisco IOS XR is a powerful, reliable operating system that meets the complex needs of modern telecommunications networks. With its focus on modularity, performance, security, and scalability, it enables service providers to deliver high-quality, resilient services to their customers while efficiently managing network resources. As the industry continues to evolve, IOS XR remains a vital tool for those aiming to stay competitive in the ever-changing landscape of networking.
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