As CRS112-8G-4S-IN is a switch with some L3 capabilities it is not recommended to be configured as BRAS
NTP is not available as an option. For DNS, use the option dns-server in ppp profile:
Code: Select all/ppp profile add name="pppoe-profile" local-address=10.1.1.1 remote-address=pppoe-pool dns-server=1.1.1.1
The picture was used just as an example, you can view full context here https://youtu.be/kA9Gu25vt6w?t=1030