Dear Expert, I have Cisco 877 series Router, this type of router has 1 ADSL WAN port and 4 Ethernet LAN ports. The device will be connecting into the SHDSL circuit. It cannot use the ADSL WAN port since the SHDSL circuit is using Ethernet ports. Instead I will be using the LAN Ethernet ports (int Fa0) as WAN.
The said router can do the VLAN mapping and can do several VLANS. How can I used the LAN ethernet ports as WAN port for this case.