D-Link IR850LA1 User Manual page 40

Section 3 - Configuration
Maximum Idle Time: Enter a maximum idle time during which the Internet connection is maintained during inactivity.
DNS Mode: This option allow the router to obtain the DNS IP addresses from the ISP, when Receive.DNS.from.ISP is selected,
Primary DNS Server: Enter the Primary DNS IP address used here.
Secondary DNS Server: Enter the Secondary DNS IP address used here. This field is normally optional. Only one DNS address is required for
MTU: Maximum Transmission Unit - you may need to change the MTU for optimal performance with your specific ISP.
MAC Address: The default MAC Address is set to the Internet port's physical interface MAC address on the Broadband Router. It
D-Link DIR-850L User Manual
or allows the user to enter DNS IP address manually, when Enter.DNS.Manually is selected.
a functional Internet connection, but using a second DNS address provides more stability.
1492 is the default MTU.
is not recommended that you change the default MAC address unless required by your ISP. You can use the Clone.
Your.PC's.MAC.Address button to replace the Internet port's MAC address with the MAC address of your Ethernet
card.
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