TP-Link TD-8841 User Manual page 35

Obtain an IP address automatically: Check this radio button to obtain the IP address
automatically. This is not recommended by default.
Use the following IP address: This radio button is checked by default. Enter the information
provided by your ISP to configure the WAN IP settings.
Obtain default gateway automatically: This radio button is checked by default. It's
recommended that you keep the default settings to allow the Router to obtain the default
gateway automatically.
Use the following default gateway: Check this radio button then you can enter the IP
address and the WAN interface for the default gateway. This is not recommended by default.
Obtain DNS server addresses automatically: This radio button is checked by default. It's
recommended that you keep the default settings to allow the Router to obtain the default
DNS server addresses automatically.
Use the following DNS server addresses: Check this radio button then you can enter the
primary DNS server and secondary DNS server. This is not recommended by default.
Note:
1. DHCP can be enabled for PVC in MER mode as WAN interface if "Obtain an IP address
automatically" is chosen.
2. Changing the default gateway or the DNS will affect the whole system. Configuring them with
static values will disable the automatic assignment from DHCP or other WAN connection.
TD-8841 ADSL2+ Modem Router User Guide
Figure 4-12
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