TP-Link TL-ER604W manual Secondary, Connection, Default Gateway

MTU:	MTU (Maximum Transmission Unit) is the maximum data unit
	transmitted by the physical network. It can be set in the range of
	576-1460. The default MTU is 1460. It is recommended to keep the
	default value if no other MTU value is provided by your ISP.
Active Mode:	You can select the proper Active Mode according to your need.
	 Manual: Select this option to manually activate or terminate the
	Internet connection by the <Connect> or <Disconnect> button. It
	is optimum for the dial-up connection charged on time.
	 Always-on: Select this option to keep the connection always on.
	The connection can be re-established automatically when it is
	down.
Secondary	Here allows you to configure the secondary connection. Dynamic IP
Connection:	and Static IP connection types are provided.
Connection Type:	Select the secondary connection type. Options include Disable,
	Dynamic IP and Static IP.
IP Address:	If Static IP is selected, configure the IP address of WAN port. If
	Dynamic IP is selected, the IP address of WAN port obtained is
	displayed.
Subnet Mask:	If Static IP is selected, configure the subnet mask of WAN port. If
	Dynamic IP is select, the subnet mask of WAN port obtained is
	displayed.
Default Gateway:	If Static IP is selected, configure the default gateway. If Dynamic IP is
	selected, the obtained default gateway is displayed.

Primary DNS/	If Static IP is selected, configure the DNS. If Dynamic IP is selected,
Secondary DNS:	the obtained DNS is displayed.
Upstream Bandwidth:	Specify the bandwidth for transmitting packets on the port.
Downstream	Specify the bandwidth for receiving packets on the port.
Bandwidth:
	-20-