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 following example, the user configures an interface but does not commit it. After reviewing the changes to the target configuration with the show configuration command, the user decides to remove the changes and start over by entering the clear command:

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)# shutdown

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

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

Building configuration...

interface Gi0/3/0/1 description this is my interface ipv4 address 10.1.1.1 255.0.0.0 shutdown

end

RP/0/RSP0/CPU0:router(config)# clear RP/0/RSP0/CPU0:router(config)# show configuration Building configuration...

end

Committing Changes to the Running Configuration

The changes in the target configuration do not become part of the running configuration until you type the commit command. When you commit a target configuration, you can use the commit command to do either of the following:

•Merge the target configuration with the running configuration to create a new running configuration.

•Replace the running configuration with the target configuration.

Note If you try to end a configuration session without saving your changes to the running configuration with the commit command, you are prompted to save the changes. See the “Ending a Configuration Session” section on page 3-31for more information.

To commit target configuration changes to the running configuration, type the commit command by itself or with one or more of the options described in Table 3-5.

Table 3-5 Commit Command Options

Command

Description

 

 

commit

(Default) Merges the target configuration with the running configuration

 

and commits changes only if all changes in the target configuration pass

 

the semantic verification process. If any semantic errors are found, none

 

of the configuration changes takes effect.

 

 

commit best-effort

Merges the target configuration with the running configuration and

 

commits only valid changes (best effort). Some configuration changes

 

might fail due to semantic errors.

 

 

 

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Cisco Systems A9K24X10GETR, ASR 9000 Committing Changes to the Running Configuration, Configuration changes takes effect
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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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