debug is an exec privilege level command not a configuratin command. So as far as I know there is not any way to configure your router to automatically run the debug ppp authentication when the router reboots.
Perhaps we can think about your question a bit differently and come up with an alternative that might work. What is it in the debug output that you find particularly valuable and helpful. I am guessing that it might be the knowledge of who was gaining ppp access to the router. You can also get that information through the accounting functions of aaa. I have configured several routers where users access the router via ppp. I set up aaa accounting and it sends accounting records that clearly show each user who has successfully authenticated into the router.
If it is not a listing of users who have authenticated then perhaps you can tell us what you are looking for in the debug output and perhaps we can suggest another way to get that information.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
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