Netgear D6400 Ac1600 Wifi Vdsl Adsl Modem Router 802 11ac Dual Band Gigabit User Manual

							Manage the Internet Settings Manually 81
 AC1600 WiFi VDSL/ADSL Modem Router Model D6400
7. 
Configure the fixed IPv6 addresses for the WAN connection:
• IPv6 Address/Prefix 
 Length. The IPv6 address and prefix length of the modem 
router WAN interface that your ISP provided to you.
• Default IPv6 Gateway . 
 The IPv6 address of the default IPv6 gateway for the modem 
router’s WAN interface that your ISP provided to you.
• Primary DNS . 
 The primary DNS server that resolves IPv6 domain name records for 
the modem router that your ISP provided to you.
• Secondary DNS . 
 The secondary DNS server that resolves IPv6 domain name 
records for the modem router that your ISP provided to you.
Note: If you do not specify the DNS servers, the modem router uses the DNS 
servers that are configured for the IPv4 Internet connection on the 
Internet Setup page (see Manually Set Up an ADSL Internet 
Connection on page  47).
8.  Select 
an  IP Address Assignment  radio  button:
•Use DHCP Server .
  The modem router assigns IPv6 addresses to the devices on your 
home network (the LAN) through a DHCP server.  This method passes more information 
to LAN devices, but some IPv6 systems might not support the DHCPv6 clien\
t 
function. This is the default setting.
• Auto Config .
  The modem router automatically configures its IPv6 address  based on the 
IPv6 protocol.
9.  In the IPv6 Address/Prefix 
 Length fields, specify the static IPv6 address and prefix length 
of the modem router’s LAN interface. 
						

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82 AC1600 WiFi VDSL/ADSL Modem Router Model D6400 
If you do not specify an address here, the modem router generates one automatically 
from its MAC address.
10. Click the Apply button.
Your settings are saved.
Set Up an IPv6 DHCP Connection
An IPv6 DHCP connection is based on a dynamic IPv6 address that a DHCPv6 server 
assigns to the modem router.
Note:Follow the directions that your IPv6 ISP gave you.
To set up an IPv6 Internet connection with a DHCP server:
1. Launch a web browser from a computer or WiFi device that is connected to the network.
2. Type http://www.routerlogin.net.
A login window opens.
3. Enter the modem router user name and password.
The user name is admin. The default password is password. The user name and 
password are case-sensitive.
4. Click the OK button.
The BASIC Home page displays.
5. Select ADVANCED > Advanced Setup > IPv6.
The IPv6 page displays.
6. From the Internet Connection Type menu, select DHCP. 
						

							Manage the Internet Settings Manually 83
 AC1600 WiFi VDSL/ADSL Modem Router Model D6400
The modem router automatically detects the information in the following \
fields:
• Router
’s IPv6 Address On WAN. This field shows the IPv6 address that is acquired 
for the modem router’s WAN (or Internet) 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.
• Router
’s IPv6 Address On LAN. This field shows the IPv6 address that is acquired 
for the modem router’s LAN interface. The number after the slash (/) is the length of 
the prefix, which is also indicated by the underline (_) under the IPv\
6 address. If no 
address is acquired, the field displays Not Available.
7.  If your IPv6 ISP gave you a specific host name, in
  the  User Class (If Required) field, 
enter the host name.
If your IPv6 ISP did not give you a specific host name, you can leave th\
is field blank.
8.  T
o specify a domain name, in the  Domain Name (If Required) field, enter a domain name.
If your ISP gave you a specific domain name, enter it in this field. (F\
or example, Earthlink 
Cable might require a host name of home, and Comcast sometimes supplies a domain 
name.)
If your ISP did not give you a specific domain name, you can either leav\
e this field blank 
or enter 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, enter xxx.yyy.zzz as 
the domain name. 
						

							Manage the Internet Settings Manually 
84 AC1600 WiFi VDSL/ADSL Modem Router Model D6400 
9. Select an IP Address Assignment radio button:
•Use DHCP Server. The modem router assigns IPv6 addresses to the devices on your 
home network (the LAN) through a DHCP server. This method passes more information 
to LAN devices, but some IPv6 systems might not support the DHCPv6 client 
function. This is the default setting.
•Auto Config. The modem router automatically configures its IPv6 address based on the 
IPv6 protocol.
10. To specify the interface ID for the IPv6 address of the modem router’s LAN interface, select 
the Use This Interface ID check box, and enter the interface ID.
If you do not specify an ID here, the modem router generates one automatically from its 
MAC address.
11. Click the Apply button.
Your settings are saved.
Set Up an IPv6 PPPoE Connection
An IPv6 PPPoE connection is based on a dynamic IPv6 address that a PPPoE service 
assigns to the modem router.
Note:Follow the directions that your IPv6 ISP gave you.
To set up an IPv6 PPPoE Internet connection:
1. Launch a web browser from a computer or WiFi device that is connected to the network.
2. Type http://www.routerlogin.net.
A login window opens.
3. Enter the modem router user name and password.
The user name is admin. The default password is password. The user name and 
password are case-sensitive.
4. Click the OK button.
The BASIC Home page displays.
5. Select ADVANCED > Advanced Setup > IPv6.
The IPv6 page displays.
6. From the Internet Connection Type menu, select PPPoE. 
						

							Manage the Internet Settings Manually 85
 AC1600 WiFi VDSL/ADSL Modem Router Model D6400
The modem router automatically detects the information in the following \
fields:
• Router
’s IPv6 Address On WAN. This field shows the IPv6 address that is acquired 
for the modem router’s WAN (or Internet) 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.
• Router
’s IPv6 Address On LAN. This field shows the IPv6 address that is acquired 
for the modem router’s LAN interface. The number after the slash (/) is the length of 
the prefix, which is also indicated by the underline (_) under the IPv\
6 address. If no 
address is acquired, the field displays Not Available.
7.  In the Login field, enter the login information for the ISP connection.
This is usually the name that you use in your email address. For example\
, if your main  mail account is JerAB@ISP
 .com, you would enter JerAB in this field. Some ISPs (such as 
Earthlink) require that you use your full email address when you log in\
. If your ISP 
requires your full email address, enter it in this field.
8.  In the Password  field, enter the password for the ISP connection.
9.  In the Service Name field, enter a service name.
If your ISP did not provide a service name, leave this field blank.
Note: The default setting of the Connection Mode menu is  Always On to 
provide a steady IPv6 connection. The modem router never terminates 
the connection. If the connection is terminated, for example, when the 
modem is turned off, the modem router attempts to reestablish the 
connection immediately after the PPPoE connection becomes 
available again. 
						

							Manage the Internet Settings Manually 
86 AC1600 WiFi VDSL/ADSL Modem Router Model D6400 
10. Select an IP Address Assignment radio button:
•Use DHCP Server. The modem router assigns IPv6 addresses to the devices on your 
home network (the LAN) through a DHCP server. This method passes more information 
to LAN devices, but some IPv6 systems might not support the DHCPv6 client 
function. This is the default setting.
•Auto Config. The modem router automatically configures its IPv6 address based on the 
IPv6 protocol.
11. To specify the interface ID for the IPv6 address of the modem router’s LAN interface, select 
the Use This Interface ID check box, and enter the interface ID.
If you do not specify an ID here, the modem router generates one automatically from its 
MAC address.
12. Click the Apply button.
Your settings are saved.
Set Up an IPv6 Connection Through Auto Config
If your Internet connection does not use PPPoE, DHCP, a fixed IP address, or pass-through 
but is IPv6, use the Auto Config connection type, which lets the modem router autoconfigure 
its IPv6 connection.
To set up an IPv6 Internet connection through auto-configuration:
1. Launch a web browser from a computer or WiFi device that is connected to the network.
2. Type http://www.routerlogin.net.
A login window opens.
3. Enter the modem router user name and password.
The user name is admin. The default password is password. The user name and 
password are case-sensitive.
4. Click the OK button.
The BASIC Home page displays.
5. Select ADVANCED > Advanced Setup > IPv6.
The IPv6 page displays.
6. From the Internet Connection Type menu, select Auto Config. 
						

							Manage the Internet Settings Manually 87
 AC1600 WiFi VDSL/ADSL Modem Router Model D6400
The modem router automatically detects the information in the following \
fields:
• Router
’s IPv6 Address on WAN. This field shows the IPv6 address that is acquired 
for the modem router’s WAN (or Internet) 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.
• Router
’s IPv6 Address on LAN. This field shows the IPv6 address that is acquired 
for the modem router’s LAN interface. The number after the slash (/) is the length of 
the prefix, which is also indicated by the underline (_) under the IPv\
6 address. If no 
address is acquired, the field displays Not Available.
7.  If your ISP gave you a specific host name,
  in the  DHCP User Class (If Required)  field, 
enter the host name.
If your ISP did not give you a specific host name, leave this field blan\
k.
8.  T
o specify a domain name, in the  DHCP Domain Name (If Required) field, enter a domain 
name.
If your ISP gave you a specific domain name, enter it in this field. (F\
or example, Earthlink 
Cable might require a host name of home, and Comcast sometimes supplies a domain 
name.)
If your ISP did not give you a specific domain name, you can either leav\
e this field blank 
or enter 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, enter xxx.yyy.zzz as 
the domain name. 
						

							Manage the Internet Settings Manually 
88 AC1600 WiFi VDSL/ADSL Modem Router Model D6400 
9. Select an IP Address Assignment radio button:
•Use DHCP Server. The modem router assigns IPv6 addresses to the devices on your 
home network (the LAN) through a DHCP server. This method passes more information 
to LAN devices, but some IPv6 systems might not support the DHCPv6 client 
function.
•Auto Config. This is the default setting.
10. To specify the interface ID for the IPv6 address of the modem router’s LAN interface, select 
the Use This Interface ID check box, and enter the interface ID.
If you do not specify an ID here, the modem router generates one automatically from its 
MAC address.
11. Click the Apply button.
Your settings are saved.
Set Up an IPv6 6rd Tunnel Connection
The 6rd protocol makes it possible to deploy IPv6 to sites using a service provider’s IPv4 
network. 6rd uses the service provider’s own IPv6 address prefix. This limits the operational 
domain of 6rd to the service provider’s network and is under direct control of the service 
provider. The IPv6 service that is provided is equivalent to native IPv6.
The 6rd mechanism relies on an algorithmic mapping between the IPv6 and IPv4 addresses 
that are assigned for use within the service provider’s network. This mapping allows for 
automatic determination of IPv4 tunnel endpoints from IPv6 prefixes, enabling stateless 
operation of 6rd.
To set up an IPv6 6rd tunnel connection:
1. Launch a web browser from a computer or WiFi device that is connected to the network.
2. Type http://www.routerlogin.net.
A login window opens.
3. Enter the modem router user name and password.
The user name is admin. The default password is password. The user name and 
password are case-sensitive.
4. Click the OK button.
The BASIC Home page displays.
5. Select ADVANCED > Advanced Setup > IPv6.
The IPv6 page displays.
6. From the Internet Connection Type menu, select 6rd Tunnel. 
						

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 AC1600 WiFi VDSL/ADSL Modem Router Model D6400
The modem router automatically detects the information in the Router’s IPv6 Address 
on LAN field. This field shows the IPv6 address that is acquired for the modem router’\
s 
LAN interface. The number after the slash (/) is the length of the prefix, which is a\
lso 
indicated by the underline (_) under the IPv6 address. If no address i\
s acquired, the field 
displays Not Available.
7.  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.
8.  Select an IPv6 Domain Name Server (DNS) 
 Address radio button:
• Get 
Automatically from ISP . The ISP’s DHCP server automatically assigns IPv6 
DNS server addresses.
• Use These DNS Servers. Enter the static IPv6 ( not IPv4) DNS server addresses that 
your ISP provided to you.
9.  Select 
an  IP Address Assignment  radio  button:
•Use DHCP Server .
  The modem router assigns IPv6 addresses to the devices on your 
home network (the LAN) through a DHCP server.  This method passes more information 
to LAN devices, but some IPv6 systems might not support the DHCPv6 clien\
t 
function. This is the default setting.
• Auto Config .
  The modem router automatically configures its IPv6 address  based on the 
IPv6 protocol. 
						

							Manage the Internet Settings Manually 
90 AC1600 WiFi VDSL/ADSL Modem Router Model D6400 
10. To specify the interface ID for the IPv6 address of the modem router’s LAN interface, select 
the Use This Interface ID check box, and enter the interface ID.
If you do not specify an ID here, the modem router generates one automatically from its 
MAC address.
11. 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 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:
-A secure website that does not open or displays only part of a web page
-Yahoo email
-MSN portal
-America Online’s DSL service
•You use VPN and experience severe performance problems.
•You used a program to optimize MTU for performance reasons and now you are 
experiencing connectivity or performance problems.
If you suspect an MTU problem, a common solution is to change the MTU to 1400. If you are 
willing to experiment, you can gradually reduce the MTU from the maximum value of 1500 
until the problem goes away. The following table describes common MTU sizes and 
applications.