Please advise what configuration i would have to do on Cisco 887 which i need to connect in front of NBN - Fiber to the node - NBN connection and from the LAN port of this Cisco 887 this will go to the Cisco Meraki MX WAN port.
Please help me if there is any article or something, so that i have some idea what configuration i would have to do.
If you are using NBN I'm guessing you have a VDSL connection. If your provider uses PPPoE then I wont be tempted to sinmply bridge the connection through, so that the MX can have a public IP address on it.
Otherwise you can use a normal "NAT" config on the 887.