Manage The Mtu Size; Mtu Concepts - NETGEAR R6900 User Manual

reestablish the connection immediately after the PPPoE connection becomes available
again.
9. Select an IPv6 Domain Name Server (DNS) Address radio button:
• Get Automatically from ISP. Your ISP uses DHCP to assign your DNS servers. Your ISP
automatically assigns this address.
• Use These DNS Servers. If you know that your ISP requires specific servers, select this option.
Enter the IP address of your ISP's primary DNS server. If a secondary DNS server address is
available, enter it also.
10. Select an IP Address Assignment radio button:
• Use DHCP Server. This method passes more information to LAN devices but some IPv6 systems
might not support the DHCv6 client function.
• Auto Config. This is the default setting.
This setting specifies how the router assigns IPv6 addresses to the devices on your home network
(the LAN).
11. (Optional) Select the Use This Interface ID check box and specify the interface ID to be used for the
IPv6 address of the router's LAN interface.
If you do not specify an ID here, the router generates one automatically from its MAC address.
12. Click the Apply button.
Your settings are saved.

Manage the MTU Size

The maximum transmission unit (MTU) is the largest data packet a network device transmits.

MTU Concepts

When one network device communicates across the Internet with another, the data packets travel through
many devices along the way. If a device in the data path uses a lower maximum transmission unit (MTU)
setting than the other devices, the data packets must be split or "fragmented" to accommodate the device
with the smallest MTU.
The best MTU setting for NETGEAR equipment is often the default value. In some situations, changing
the value fixes one problem but causes another.
Leave the MTU unchanged unless one of these situations occurs:
• You experience problems connecting to your ISP or other Internet service, and the technical support
of either the ISP or NETGEAR recommends changing the MTU setting.These web-based applications
might require an MTU change:
Nighthawk AC1900 Smart WiFi Router Model R6900
Specify Your Internet Settings
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