TP-Link TL-ER6020 manual 3.1.3 WAN,  Non-NAT Mode,  Classic Mode, Static IP, Tips

Non-NAT Mode

In this mode, the Router functions as the traditional Gateway and forwards the packets via routing protocol. The Hosts in different subnets can communicate with one another via the routing rules whereas no NAT is employed. For example: If the DMZ port of the Router is in WAN mode, the Hosts in the subnet of DMZ port can access the servers in Internet only when the Static Router rules permit.

Note:

In Non-NAT mode, all the NAT forwarding rules will be disabled.

Classic Mode

It's the combined mode of NAT mode and Non-NAT mode. In Classic mode, the Router will first transport the packets which are compliant with NAT forwarding rules and then match the other packets to the static routing rules. The matched packets will be transmitted based on the static routing rules and the unmatched ones will be dropped. In this way, the Router can implement NAT for the packets without blocking the packets in the different subnet of the ports.

3.1.3 WAN

TL-ER6020 provides the following six Internet connection types: Static IP, Dynamic IP, PPPoE/Russian PPPoE, L2TP/Russian L2TP, PPTP/Russian PPTP and BigPond. To configure the WAN, please first select the type of Internet connection provided by your ISP (Internet Service Provider).

Tips:

It’s allowed to set the IP addresses of both the WAN ports within the same subnet. However, to guarantee a normal communication, make sure that the WAN ports can access the same network, such as Internet or a local area network.

Choose the menu Network→WAN to load the configuration page.

1)Static IP

If a static IP address has been provided by your ISP, please choose the Static IP connection type to configure the parameters for WAN port manually.

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