You might try resetting the ip.addresses ...
1. Power both units on and give them several minutes to complete power-up
2. Disconnect the ethernet cable and then reset defaults on each unit.
3. Turn the units off.
4. Power the units back on and let them power up completely.
5. Reset defaults and then turn the units off.
6. While power is off, reconnect ethernet cable.
7. Power on primary unit and let it completely boot up before powering on the next unit
Rickie