GX450 Vs LX60 differences if any interms of ethernet connectivity

In one of our customer cases we have replaced GX450 with LX60. They are using the exact same configuration as GX 450 to connect via ethernet. The cellular link is up but ethernet communication is not happening.

the attached JPG shows the broad level architecture used at our end.


Do you configure the LAN or WAN Ethernet port on LX60?
Please help to share your configuration template on LX60 and GX450.