Chapter 3 Configuring General Router Features

Managing Configuration Sessions

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

In the preceding example, the show configuration command displays the target configuration, which includes the failed configuration.

Note The failed configuration is discarded if you exit global configuration mode or administration configuration mode without recovering the configuration. After recovery, correct and commit the configuration or save it to a file to avoid losing it.

Exiting a Configuration Submode

When you have finished configuration changes in a configuration submode, such as the interface or RSP configuration submodes, you can return to return to the previous configuration mode and continue making configuration changes. To exit a configuration submode, type the exit command, as shown in the following example:

RP/0/RSP0/CPU0:router# configure

RP/0/RSP0/CPU0:router(config)# interface Gi 0/3/0/1

RP/0/RSP0/CPU0:router(config-if)# description this is my interface

RP/0/RSP0/CPU0:router(config-if)# ipv4 address 10.1.1.1 255.0.0.0

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

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

Note If you use the exit command to exit global configuration or administration configuration mode, the router prompts you to save changes, discard changes, or cancel the action, as described in the next section.

Returning Directly to Configuration Mode from a Submode

When you have finished configuration changes in a configuration submode, such as the interface or RSP configuration submodes, you can skip all intermediate submodes and return to the top-level configuration mode and continue making configuration changes. To return to configuration mode, type the root command, as shown in the following example:

RP/0/RSP0/CPU0:router# configure

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

RP/0/RSP0/CPU0:router(config-static)# address-family ipv4 unicast

RP/0/RSP0/CPU0:router(config-static-afi)# root

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

Ending a Configuration Session

You can use any of the following methods to end a configuration session:

•Type the exit command in global configuration or administration configuration mode.

•Type the end command in any configuration mode or submode

•Press Ctrl-Z.

Note If you type the exit command in a configuration submode, the command returns you to the parent configuration level.

 

 

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Cisco Systems A9K24X10GETR manual Exiting a Configuration Submode, Returning Directly to Configuration Mode from a Submode
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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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