bridging mode

[Thanos911]

After I set my CenturyLink modem to bridging mode what do I have to configure in my meraki MX68W router?

TIA

[ww]

Most likely you would like to use the routed  mode 

In this mode, the MX will act as a layer 3 gateway between the subnets configured below. Unless otherwise configured (see below), client traffic to the Internet is translated (NATed) so that its source IP becomes the uplink IP of the security appliance.

[PhilipDAth]

I don't know how CenturyLink do their encapsulation, from I'm going to guess PPPoE.  You configure this via the local status page.

https://documentation.meraki.com/zGeneral_Administration/Other_Topics/Support_for_PPPoE_on_Cisco_Mer...