CHAPTER
2-1
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
2
Cisco IOS XR Basic Configuration Management
This chapter describes how to communicate with the router using the command-line interface (CLI), and
it describes basic Cisco IOS XR software configuration management.
Contents
The chapter contains the following sections:
• Connecting and Communicating with the Router, page 2-1
• Logging In to the Router, page 2-4
• CLI Prompt, page 2-4
• User Access Privileges, page 2-5
• Navigating the Cisco IOS XR Command Modes, page 2-8
• Managing Configuration Sessions, page 2-14
• Configuration History and Rollback, page 2-23
• Saving and Loading Target Configuration Files, page 2-27
• Configuration File Storage, page 2-29
• Impact of Software Package Activation and Deactivation, page 2-29
Connecting and Communicating with the Router
To manage or configure a router running the Cisco IOS XR software, you must first connect to the router
using a terminal or a PC. Connections are made either through a direct physical connection to the
Console port of the primary Route Processor (RP), or from a remote location using a modem or Ethernet
connection. Figure 2-1 shows the RP connections on the Cisco CRS-1 16-Slot Line Card Chassis, and
Figure 2-2 shows the RP connections on the Cisco CRS-1 8-Slot Line Card Chassis.