Cisco Systems IOS XR manual Configuring User Accounts, Command Description

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Chapter 3 Configuring Additional Router Features

Creating and Modifying User Accounts and User Groups

Displaying Details About User Accounts, User Groups, and Task IDs

Table 3-3summarizes the EXEC mode commands used to display details about user accounts, user groups, and task IDs.

Table 3-3

Commands to Display Details About Users and User Groups

 

 

 

Command

 

Description

 

 

show aaa userdb username

Displays the task IDs and privileges assigned to a specific username. To display

 

 

all users on the system, enter the command without a username.

 

 

show aaa usergroup usergroup-name

Displays the task IDs and privileges that belong to a user group. To display all

 

 

groups on the system, enter the command without a group name.

 

 

show task supported

Displays all task IDs for the system. Only the root-system users, root-lr users, or

 

 

users associated with the WRITE:AAA task ID can configure task groups.

 

 

 

Configuring User Accounts

User accounts, user groups, and task groups are created by entering the appropriate commands in one of the “AAA” configuration submodes, as shown in Figure 3-1.

This section describes the process to configure usernames. For instructions to configure user groups, task groups, and other AAA security features, see the Cisco IOS XR System Security Configuration Guide.

Figure 3-1 AAA Configuration Submodes

User login

EXEC mode

Global configuration mode

(commands)

username username

usergroup usergroup-name

taskgroup taskgroup-name

AAAconfiguration submodes

Username configuration submode

User group configuration submode

Task group configuration submode

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Cisco IOS XR Getting Started Guide

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Contents Contents Configuring Additional Router FeaturesRelated Topic Document Title Configuring Telnet, HTTP, and XML Host ServicesConfigure Domain name-server ipv4-address Commit End Show hostsDescriptions of the Telnet commands Managing Configuration History and RollbackFollowing example, the host services are enabled Installation and activation of the ManageabilityDisplaying the CommitIDs Displaying the Configuration History Log Show configuration commit list command displayRP/0/RP0/CPU0router# show configuration commit list RP/0/0/CPU0router# show configuration commit changes Displaying the Configuration Changes Recorded in a CommitIDPreviewing Rollback Configuration Changes Configuration commit historyRolling 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 Logging Locations and Severity Levels Configuring Logging and Logging CorrelationAlarm Logging Correlation Logging Destination Command Global Configuration ModeConfiguring Basic Message Logging Command or Action PurposeExample Ends the configuration session and returns to When a severity level is specified, onlyCommits the target configuration to the router Running configurationCreating and Modifying User Accounts and User Groups Configuration of system loggingCommands used to configure logging Configuration of alarm correlation and generatingCommand 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 Exec Mode Static Route Configuration LimitsDefault Absolute Maximum Configuration Command Show Current Settings CommandMaximum-redistributed-prefixes n Show isis adjacency IS-IS Configuration LimitsOSPFv2 and v3 Configuration Limits Limit Mode Exec ModeIf the maximum paths Maximum paths n Show running-config router ospfMaximum interfaces n Show ospf Maximum redistributed-prefix n Show ospfMaximum Interfaces for Each Ospf Instance Maximum-prefix n Show bgp neighbor IPaddress BGP Configuration LimitsDefault Absolute Maximum Configuration Command Feature Limit DescriptionMaximum 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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