Dual router blues

[Flintstone61]

Wan settings has few words about transparent Bridging

WAN settings

If instructed by a technician, you can change the protocol and addressing type on your modem, including PPPoE, IPoE or transparent bridging.

www.centurylink.com

 

[Billyjack5]

So the CenturyLink C4000XG is a fiber modem/router and you've run one it's LAN ports to the WAN port of the Orbi and so it's a double NAT?

Since the C4000XG is a router, why not disable DHCP in the Orbi, give the Orbi a static IP in the same subnet as the C4000XG (192.168.0.XXX), connect a LAN port from the C4000XG to a LAN port on the Orbi and let the C4000 perform the routing? The Orbi will serve as a Wireless Access Point and switch for the same LAN.
If that works then forward your BI port to the BI server's port in the C4000XG.

Really appreciate the response. The Orbi has an "AP' mode setting that I think would accomplish what you describe,though I'll need to wait until I'm physically on site to test it since I'm doing this remotely,which is why I'm hoping for a port forwarding type solution.

 

[Flintstone61]

I think there is a chance you can talk them about Transparent Bridging the router, and then continue using the Orbi the way you were? fingers crossed