Cisco Router Cisco IOS XR User Manual

Glossary
GL-2
Cisco IOS XR Getting Started Guide
OL-10957-02
C
card type
The type of the card inserted in a slot.
CDP
Cisco Discovery Protocol. CDP runs on all Cisco devices so that these devices can learn about
neighboring devices and exchange information. CDP uses a well-known multicast MAC address.
During system initialization, the application-specific integrated circuit (ASIC) is configured to forward
these packets to the Cisco IOS XR software CPU, which processes the packets.
Cisco.com
The Cisco website
CLI
command-line interface. A text-based user interface to an operating system. A command-line interface
is a user interface to a computer operating system or an application in which the user responds to a
visual prompt by typing a command on a specified line, receives a response from the system, and then
enters another command, and so forth. Typically, most of the UNIX-based systems today offer both a
command-line interface and graphical user interface (GUI). See also GUI.
committed/saved
software
configuration
The configuration stored in the system for a particular node. The RP loads the committed configuration
into memory at startup.
configuration
register
In Cisco routers, a 16-bit, user-configurable value that determines how the router functions during
initialization. The configuration register can be stored in hardware or software. In hardware, the bit
position is set using a jumper. In software, the bit position is set by specifying a hexadecimal value
using configuration commands. A hexadecimal or decimal value that represents the 16-bit
configuration register value that you want to use the next time the router is restarted. The value range
is from 0x0 to 0xFFFF (0 to 65535 in decimal).
control plane
The control plane oversees the operation of the data plane, allocating resources, providing information,
and handling errors to allow data plane operations to be continuous and efficient.
CORBA
Common Object Request Broker Architecture. Specification that provides the standard interface
definition between OMG-compliant objects. CORBA allows applications to communicate with one
another no matter where they are located or who has designed them.
CoS
class of service. An indication of how an upper-layer protocol requires a lower-layer protocol to treat
its messages. In SNA subarea routing, CoS definitions are used by subarea nodes to determine the
optimal route to establish a given session. A CoS definition comprises a virtual route number and
transmission priority field. Repetitive, regularly timed signals are used to control synchronous
processes.
CWI
Craft Works Interface. Graphical user interface (GUI) used to configure and operate a router. The CWI
client runs in a web browser.
D
DDTS
distributed defect tracking system. A method to track software errors and resolutions.
DHCP
Dynamic Host Configuration Protocol. Provides a mechanism for allocating IP addresses dynamically
so that addresses can be reused when hosts no longer need them.

Cisco Router Cisco IOS XR Specifications

General

Brand	Cisco
Model	Router Cisco IOS XR
Category	Software
Language	English

Summary

CHAPTER 1 Introduction to Cisco IOS XR Software

Supported Standalone System Configurations

Cisco CRS-1 Multishelf System Overview

Router Management Interfaces

Details the interfaces used for router management: CLI, Craft Works, XML API, and SNMP.

Selecting and Identifying the Designated Shelf Controller

Explains how to select and identify the Designated Shelf Controller (DSC) on Cisco routers.

Connecting to the Router Through the Console Port

Provides instructions for establishing an initial connection to the router via the console port.

CHAPTER 2 Bringing Up the Cisco IOS XR Software on a Standalone Router

Bringing Up and Configuring a Standalone Router

Provides steps to connect to the router and configure root-system username and password.

Verifying the System After Initial Bring-Up

Explains how to verify the router's status using show commands after initial system bring-up.

CHAPTER 3 Bringing Up the Cisco IOS XR Software on a Multishelf System

Prerequisites

Software Requirements

Information About Bringing Up a Multishelf System

Provides overview and rack number planning information before bringing up a multishelf system.

Configuring the External Cisco Catalyst 6509 Switches

Includes instructions to configure and verify Catalyst switches for the CRS-1 multishelf router.

Integrated Switch System

Describes integrated switches on fabric chassis and their role in control network connections.

Bringing Up and Configuring Rack 0

Details the procedure to bring up and configure Rack 0 in the multishelf system.

Bringing Up and Verifying FCCs

Provides steps to bring up and configure Fabric Card Chassis (FCCs) in the multishelf system.

Bringing Up and Verifying the Non-DSC LCC

Guides on bringing up and configuring the next Line Card Chassis (LCC) in the multishelf system.

Verifying the Spanning Tree

CHAPTER 4 Configuring General Router Features

Secure Domain Routers

Connecting and Communicating with the Router

Describes how to connect to the router using a terminal or PC for management.

Logging In to a Router or an SDR

Details the login process, including username, password validation, and user group assignments.

CLI Prompt

User Access Privileges

Describes how usernames and passwords determine access rights and command usage.

Navigating the Cisco IOS XR Command Modes

Explains the different command modes and how to navigate between them using the CLI.

Managing Configuration Sessions

Details the two-stage configuration process: target configuration and commit.

Configuring the SDR Hostname

Explains how to configure the hostname for an SDR to identify it on the network.

Configuring the Management Ethernet Interface

Provides steps to configure the Management Ethernet interface for remote management.

Manually Setting the Router Clock

CHAPTER 5 Configuring Additional Router Features

Configuring the Domain Name and Domain Name Server

Configuring Telnet, HTTP, and XML Host Services

Managing Configuration History and Rollback

Configuring Logging and Logging Correlation

Creating and Modifying User Accounts and User Groups

Configuration Limiting

CHAPTER 6 CLI Tips, Techniques, and Shortcuts

CLI Tips and Shortcuts

Displaying System Information with show Commands

Wildcards, Templates, and Aliases

Command History

Key Combinations

CHAPTER 7 Troubleshooting the Cisco IOS XR Software

Basic Troubleshooting Commands

Configuration Error Messages

Memory Warnings in Configuration Sessions

Interfaces Not Coming Up