Chapter 4 Configuring Additional Router Features

 

 

Managing Configuration History and Rollback

 

 

 

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

 

 

 

 

Tip

 

To preview the commands that undo the configuration during a rollback, use the show configuration

 

 

rollback changes command.

 

 

 

 

 

 

To roll back the router configuration to a previously committed configuration, go to EXEC or

 

 

administration EXEC mode and type the rollback configuration to commitId command:

 

 

RP/0/RSP1/CPU0:router# rollback configuration to 1000000220

 

 

Loading Rollback Changes.

 

 

Loaded Rollback Changes in 1 sec

 

 

Committing.

 

 

2 items committed in 1 sec (1)items/sec

 

 

Updating.

 

 

Updated Commit database in 1 sec

 

 

Configuration successfully rolled back to '1000000220'.

Rolling Back the Configuration over a Specified Number of Commits

When you roll back the configuration over a specific number of commits, you do not have to enter a specific commit ID. Instead, you specify a number x, and the software undoes all configuration changes made in the last x committed configuration sessions. The rollback process rolls back the configuration, commits the rolled-back configuration, and creates a new commitID for the previous configuration.

Tip To preview the commands that undo the configuration during a rollback, use the show configuration rollback changes command.

To roll back to the last x commits made, go to EXEC or administration EXEC mode and type the rollback configuration last x command; x is a number ranging from 1 to the number of saved commits in the commit database.

In the following example, a request is made to roll back the configuration changes made during the previous two commits:

RP/0/RSP0/CPU0:router# rollback configuration last 2

Loading

Rollback Changes.

 

Loaded Rollback Changes in

1 sec

Committing.

 

1 items

committed in 1 sec

(0)items/sec

Updating.

 

Updated

Commit database in

1 sec

Configuration successfully

rolled back 2 commits.

Loading CommitID Configuration Changes to the Target Configuration

If the changes saved for a specific commitID are close to what you want, but a rollback is not appropriate, you can load the configuration changes for a commitID into the target configuration, modify the target configuration, and then commit the new configuration. Unlike the rollback process, the loaded changes are not applied until you commit them.

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

 

OL-17502-01

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Cisco Systems A9K24X10GETR, ASR 9000, A9KMOD80TR Rollback changes command, RP/0/RSP1/CPU0router# rollback configuration to
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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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