Quick Reusable Config Patches
Let's say you have one config element that you frequently change to a particular value, then change back shortly after. For example, I have a time of day rule that I use to limit bandwidth during the day and open up the bandwidth at night.
time-range ISP-UNLIMITED periodic daily 2:00 to 8:00 periodic Monday 8:00 to 12:00
Frequently, I need to open up the limiter during the day for brief periods. To make this easier, I created the text file "open_time_acl.cfg" on my server with the following content:
time-range ISP-UNLIMITED periodic daily 00:01 to 23:59 end
I then copied the file to my router's flash.
Then I created an alias:
alias exec opentime copy flash:open_time_acl.cfg running-config
The router will merge the file into the running config whenever I execute the command 'opentime
Then I just use the rollback command I created here to quickly revert to the original configuration.