Chapter 3 Configuring General Router Features

Navigating Cisco IOS XR Software Command Modes

F I N A L D R A F T — C i s c o C o n f i d e n t i a l

Identifying the Command Mode in the CLI Prompt

The command mode is identified in the CLI prompt after the router name.

When the router enters global configuration mode from the EXEC mode, the CLI prompt changes to include “(config)” after the router name:

RP/0/RSP0/CPU0:router# configure

RP/0/RSP0/CPU0:router(config)#

When the router enters interface configuration submode, the prompt changes to include “(config-if)” after the router name:

RP/0/RSP0/CPU0:router(config)# interface tunnel-te 2

RP/0/RSP0/CPU0:router(config-if)#

Common Command Modes

Table 3-4summarizes the most common command modes of Cisco IOS XR Software and associated CLI prompts.

Table 3-4 Common Command Modes and CLI Prompts

Command Mode

Description

 

 

EXEC

Logging in to an RP running the Cisco IOS XR Software automatically places the router in EXEC

 

mode.

 

Example:

 

RP/0/RSP0/CPU0:router#

 

EXEC mode enables a basic set of commands to display the operational state of an RP and the

 

Cisco IOS XR Software. Most CLI commands in EXEC mode do not change the RP operation. The

 

most common EXEC commands are show commands (to display RP configuration or operational

 

data) and clear commands (to clear or reset RP counters).

 

In EXEC mode, you can view the configuration of an RP but not the configuration of the system. The

 

difference is that RSPs are defined in administration configuration mode, which is a submode of

 

administration EXEC mode. RPs are configured in global configuration mode.

 

Additional commands are available depending on the access privileges (user groups) assigned to

 

your username. Minimal privileges also include a small set of EXEC commands for connecting to

 

remote devices, changing terminal line settings on a temporary basis, and performing basic tests.

 

 

Administration EXEC

Administration EXEC mode is used to manage system resources. In administration EXEC mode, you

 

can view the configuration of the system but not the configuration of an RP. The difference is that

 

RPs are defined in administration configuration mode, which is a submode of administration EXEC

 

mode. RPs are configured in global configuration mode.

 

Administration EXEC mode is used primarily to view system-wide parameters, configure the

 

administration plane over the control Ethernet, and configure the RP. These operations are available

 

only to users with the required root level access.

 

From EXEC mode, use the admin command to enter administration EXEC mode:

 

RP/0/RSP0/CPU0:router# admin

 

RP/0/RSP0/CPU0:router(admin)#

 

 

 

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

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Cisco Systems ASR 9000 Identifying the Command Mode in the CLI Prompt, Common Command Modes, Command Mode Description
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A9KMOD80TR, A9K24X10GETR, ASR 9000 specifications

Cisco Systems has long been a leader in networking technology, providing cutting-edge solutions for service providers and enterprise organizations alike. Among their standout products is the Cisco ASR 9000 Series Aggregation Services Routers, notably the A9K24X10GETR and the A9KMOD80TR models. These routers are engineered to deliver unmatched performance, scalability, and versatility for networks that require high bandwidth and low latency.

The Cisco ASR 9000 Series is built for the needs of today's complex service provider and enterprise networks. A significant feature of the A9K24X10GETR is its 24-port 10-Gigabit Ethernet module. This functionality allows for high-density connectivity, making it ideal for aggregating numerous connections to different parts of a network while maintaining optimal performance. Whether used for Internet service providers delivering high-speed connectivity or for enterprises looking to connect multiple branches, the A9K24X10GETR provides robust and reliable data transmission.

Further enhancing the capabilities of the ASR 9000 is the A9KMOD80TR module, which supports an extensive range of services. This module is designed to run a variety of technologies, including Layer 2 and Layer 3 services, MPLS (Multiprotocol Label Switching), and IPv6. Its ability to integrate seamlessly into existing infrastructures while providing the advanced features customers demand makes it an invaluable asset for network engineering teams.

Another cutting-edge technology present in the ASR 9000 Series is its support for eBGP (External Border Gateway Protocol), which plays a critical role in managing traffic across multiple networks. The routers are equipped with advanced telemetry features, empowering operators with real-time insights into network performance and health. Additionally, they come with integrated security features that protect against DDoS threats and other vulnerabilities.

In summary, Cisco's ASR 9000 Series, particularly the A9K24X10GETR and A9KMOD80TR, combines high-density connections, extensive service support, and advanced security and telemetry capabilities. These routers are perfect for demanding environments where reliable performance and adaptability are crucial. With their focus on innovation and performance, Cisco continues to shape the future of networking technology.
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