Hello, Not sure if I got your requirements correctly. The SDWAN edge router can function as normal router if you wish to. As long as you don’t enable transport on the interface, you can use that interface as normal router. If you want extend overlay ...

You might be missing the hsec license, which is required to get over 250M throughput. Follow the below steps(online or offline) to active hsec licensehttps://www.cisco.com/c/en/us/support/docs/routers/xe-sd-wan-routers/218142-configure-hseck9-license...