Naturally the authentication was always present on router configuration.
But I think that encapsulation ppp should start only after interface atm0 will be up while interface atm0 remains down.
However Ive modified the parameters from you suggested, but the result is the same.
On the contrary now is present in "debug atm event" also any "DSL: Open failed: Error in early non-CRC message or in first CRC-covered" message that was not present with the command "dsl operation-mode auto".
Send in attachment a little debug captured and full router configuration (password modified).
The problem seems to be to activate layer 1 atm interface.
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 custome...