Have load balanced ER5120 with 2 WAN's and 2 LAN networks, both LAN networks communicate with the Internet, but the LANS will not talk to each other. As per instructions set to classic system mode and built a static route to each of the LAN ports to access the remote drives off the router for the second network. Topology is:

FIOS ONT WAN 1  ----------------|------------------|--------------- LAN 1 FIOS AC Wireless Router

                                                   |   ER5120     |

CABLE MODEM  WAN 2 --------|------------------|--------------- LAN 2 Linksys AC Wireless Router -------------- USB and Ethernet Remote Hard Drives

LAN Gateway is 192.168.0.1, LAN 1 is 192.168.0.2, LAN 2 is 192.168.0.3. Set up static routing for LAN Routers LAN 1 at Destination 192.168.2.1, next hop 192.168.0.2, LAN 2 Destination 192.168.1.2, next hop 192.168.0.3, but they will not communicate with each other. For a while I had an ethernet cable between the 3rd LAN port and a LAN port on the LAN 2 router with Static routing set up for that port and it worked sometimes to the drives on the USB ports of the LAN 2 router which was 192.168.1.2, but would fail quite a bit, however, at the same time the other drives on 192.168.1.77 and 192.168.1.158 would respond.

Any ideas?