NETGEAR D6220 User Manual

6. In the 6rd Configuration section, configure the 6rd settings:
• 6rd Prefix. Enter the IPv6 prefix that your ISP gave you.
• 6rd Prefix Length. Enter the IPv6 prefix length that your ISP gave you.
• 6rd Border Relay Address. Enter the border router’s IPv4 address that your ISP gave you.
• 6rd Address Mask Length. Enter the IPv4 mask length that your ISP gave you.
7. 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.
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 router 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 router’s LAN interface.
If you do not specify an ID here, the router 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.
Manage the Internet Settings Manually
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AC1200 WiFi VDSL/ADSL Modem Router Model D6220

NETGEAR D6220 Specifications

General

DSL WAN	-
Ethernet WAN	Yes
SIM card slot	No
Wi-Fi band	Dual-band (2.4 GHz / 5 GHz)
Top Wi-Fi standard	Wi-Fi 5 (802.11ac)
WLAN data transfer rate (max)	900 Mbit/s
Product type	Tabletop router
Product color	Black
Security algorithms	WPA, WPA2, WPA2-PSK
Cabling technology	10/100/1000Base-T(X)
Networking standards	IEEE 802.11ac
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	5
Power source type	AC
Routing protocols	IP
Antennas quantity	2
Cables included	LAN (RJ-45), Phone (RJ-11)

Weight and Dimensions

Depth	182 mm
Width	240 mm
Height	41 mm
Weight	341 g