- Below is a thread of example tools which can do this , Cisco Prime will offer a more dedicated solution which can make config-backups of other cisco equipment too. Note that the question as such on advisory note is undefined and or has drawbacks - if this is intended to work on an instant config change. Then 'config change' may not correlate to final intended config change such as IT staff working on a series of maintenance changes of the config (for instance). A final saved config may then contain errors (too). And or ii is usually better to save the config on scheduled intervals, such as daily at night , for instance.
https://community.cisco.com/t5/routing/automatic-config-backups-for-routers-catalyst-switches-and-asa/td-p/2012760
M.
-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '
