Cisco commands are live too
The SSR differed from Cisco hardware in a number of ways. Perhaps the most important was how configuration worked. "When changes were applied to the command line they were applied directly," explained Kildare, "rather than being held in a buffer and applied with a second command."
Cisco commands go live once entered.
A good routine is build your config in a text editor
Then save the running config on the device and a copy on your pc
Then reload in [x minutes]
Then paste your commands
If you make a mistake and lock yourself out then it’ll reboot and get you back to where you where before you started.
An out of band network (dial up, mobile or xdsl) is invaluable when working on remote systems.
We all (ok most of us) learn from our squeaky moments!!