DIR-120 Ethernet Broadband Router
D-Link DIR-120 User Manual 25
Dynamic IP (DHCP) Internet Connection
A Dynamic IP Address connection configures the Router to
automatically obtain its global IP address from a DHCP server on the
ISP’s network. The service provider assigns a global IP address from a
pool of addresses available to the service provider. Typically the IP
address assigned has a long lease time, so it will likely be the same
address each time the Router requests an IP address.
After configuration of Internet and local network IP settings is complete,
click the Save Settings button to save the configuration changes made
and reboot the Router.
Dynamic IP Internet Connection configuration menu
Host Name
Enter the Host Name provided if necessary (optional).
MAC Address /
Clone MAC Address
This field will instruct the user to enter the Media Access Control (MAC) address of the Ethernet Card of your computer, if
instructed to do so by your ISP. To quickly accomplish this, click the Clone MAC Address button, which will automatically
copy the MAC address of your Ethernet card and enter it into the space provided, which will replace the MAC address of
the router.
MTU
The Maximum Transmission Unit size may be changed if you want to optimize efficiency for uploading data through the WAN
interface. The default setting (1492 bytes) should be suitable for most users. Some user may want to adjust the setting to
optimize performance for wireless traffic or when low latency is desired (such as with Internet gaming). It is highly recommended
that the user research how adjusting the MTU may affect network traffic throughput.
Primary DNS Address
This entry is for the IP address of your primary domain name server, which should also be provided to you by your ISP.
The router will first try the Primary DNS Address to resolve a website’s URL IP address. If this IP address fails, the router
will then try the Secondary DNS Address.
Secondary DNS Address
The IP address of the secondary domain name server will be used to resolve a website’s URL IP address if the Primary
DNS Address fails. The information in this field should also be provided by your ISP.
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