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FTOS Configuration Guide for the C-Series - Force10 Networks

FTOS Configuration Guide for the C-Series - Force10 Networks

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Chapter 5<br />

<strong>Configuration</strong> Replace and Rollback is supported on plat<strong>for</strong>ms c e<br />

<strong>Configuration</strong> Replace and Rollback enables you to replace <strong>the</strong> current running-configuration with<br />

different configuration without restarting <strong>the</strong> chassis.<br />

Without this feature, if you want to load a new running configuration, you must copy <strong>the</strong> desired<br />

configuration file to <strong>the</strong> startup-configuration (using <strong>the</strong> command copy file startup-configuration) and<br />

reboot <strong>the</strong> chassis (using <strong>the</strong> command reload). Copying <strong>the</strong> desired configuration file to <strong>the</strong><br />

running-configuration file (using <strong>the</strong> command copy file running-configuration) merely appends <strong>the</strong><br />

running configuration; any conflicts between <strong>the</strong> two files is reported to <strong>the</strong> console, but <strong>FTOS</strong> does not<br />

overwrite <strong>the</strong> running configuration, <strong>the</strong>re<strong>for</strong>e <strong>the</strong> new configuration is not fully implemented.<br />

The reboot process takes several minutes by default, and if your startup-configuration is extensive, <strong>the</strong><br />

process can take several minutes more. As a result, when <strong>the</strong> <strong>Force10</strong> system is deployed in production<br />

environment, you must wait <strong>for</strong> a maintenance window to load a new configuration.<br />

The <strong>Configuration</strong> Replace and Rollback feature allows you to archive your running configuration, and at<br />

a later time, replace your running configuration with <strong>the</strong> archived one without rebooting <strong>the</strong> chassis.<br />

During replacement <strong>FTOS</strong> calculates and applies only <strong>the</strong> difference between <strong>the</strong> archived file and <strong>the</strong><br />

running-configuration, making <strong>the</strong> process faster. Once <strong>the</strong> archived configuration is loaded, you can<br />

confirm <strong>the</strong> replacement, or revert (roll back) to your previous configuration. Rolling back allows you to<br />

view and test a configuration be<strong>for</strong>e completing <strong>the</strong> change.<br />

Archived Files<br />

<strong>Configuration</strong> Replace and<br />

Rollback<br />

Archived files are stored on <strong>the</strong> internal flash in a hidden directory. The maximum number of archived files<br />

is configurable between 10 and 15. If you archive more than <strong>the</strong> configured maximum, <strong>the</strong> oldest archived<br />

file is deleted to create space. You can view <strong>the</strong> name, size, and date of creation of a file, but you cannot<br />

view <strong>the</strong> contents of <strong>the</strong> archived file directly (using <strong>the</strong> command show file). To view <strong>the</strong> contents of a<br />

file you can backup <strong>the</strong> archive file to ano<strong>the</strong>r location and <strong>the</strong>n use <strong>the</strong> command show file, or view <strong>the</strong><br />

<strong>the</strong> differences between <strong>the</strong> archived file and ano<strong>the</strong>r file using <strong>the</strong> show diff command.<br />

<strong>FTOS</strong> <strong>Configuration</strong> <strong>Guide</strong>, version 7.7.1.0 117

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