Hi Brett,
All the DLSw ER configurations need to be under subinterface, which includes "dlsw trans redundancy-enable", "dlsw trans map ..." etc. You can think this way that subinterface has no difference between the normal interface, each subinterface is a standalone interface, it has its own mac/IP address and same functionality as a normal interface.
For the testing part, if you have SNASw image, the simplest way is to configure SNASw to bring up LLC2 connection. DSPU will also work.
Hope this helps
Jing