The easiest way to export a configuration file in text format is to execute the command “ show run” or “ show startup“, press the “space bar” key several times until the end of the configuration and then copy and paste the lines from the Terminal screen to a text editor. One option to help us compare Cisco configuration files is to export the config files in text format and then use a software tool to perform line by line comparison for us between different files. Or maybe your support vendor or technician has made recently some configuration changes on your main ASA firewall device and you want to check what they changed compared to previous configs.įor these reasons it would be useful to present some methods and tools that allow us to perform such config comparison tasks with full automation. Imagine a situation whereby you have stored several different router configurations somewhere and you want to compare the differences. In our day to day work as network administrators it is often necessary to compare configuration files of Cisco routers, switches, firewalls etc.Īs we know, a characteristic of Cisco IOS is that the configuration files are stored in text format, but still a line by line comparison of different config files is tedious and in many cases almost impossible.
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December 2022
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