One of our sites speed is upgraded to 2M/384K from 215/64K. I have been trying to update the speed and its not allowing me. But i have configured brand new routers with 384 without issues. Hope some one can help me out.
interface ATM0.1 point-to-point
When i change from 64 to 384 i am getting the following message
% Invalid input detected at '^' marker.
Its cisco 877 router with c870-advsecurityk9-mz.124-4.T7.