Manage The Mtu Size; Mtu Concepts - NETGEAR DM200 User Manual

indicated by the underline (_) under the IPv6 address. If no address is acquired, the field displays
Not Available.
• Router's IPv6 Address on LAN. This field shows the IPv6 address that is acquired for the modem's
LAN interface. The number after the slash (/) is the length of the prefix, which is also indicated by
the underline (_) under the IPv6 address. If no address is acquired, the field displays Not Available.
6. (Optional) In the DHCP User Class (If Required) field, enter a host name.
Most people can leave this field blank, but if your ISP gave you a specific host name, enter it here.
7. (Optional) In the DHCP Domain Name (If Required) field, enter a domain name.
You can type the domain name of your IPv6 ISP. Do not enter the domain name for the IPv4 ISP here.
For example, if your ISP's mail server is mail.xxx.yyy.zzz, type xxx.yyy.zzz as the domain name. If your
ISP provided a domain name, type it in this field.
8. 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 modem assigns IPv6 addresses to the devices on your home network
(the LAN).
9. (Optional) Select the Use This Interface ID check box and specify the interface ID to be used for the
IPv6 address of the modem's LAN interface.
If you do not specify an ID here, the modem generates one automatically from its MAC address.
10. 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.
Broadband High-Speed DSL Modem Model DM200
Manage the Internet Settings Manually
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