Netgear R6900 Nighthawk Ac1900 Smart Wifi Router User Manual

							•
Auto Config. This is the default setting.
This setting specifies ho w the router assigns IPv6 addresses to the devices on your home network (the LAN).
8. In the 

IPv6 Address/Prefix Length fields, specify the static IPv6 address and prefix length of the router’s LAN
interface.
If you do not specify an ID here, the 
router generates one automatically from its MAC address.
9. Clic
k the Apply button.
Y

our settings are saved.
Set Up an IPv6 DHCP Internet Connection 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. Enter 
http://www.routerlogin.net.
A login window opens.
3. Enter the 
router user name and password.
The user name is admin. The default password is password. The user name and password are case-sensitive.
The BASIC Home page displays.
4. Select 
ADVANCED > Advanced Setup > IPv6.
The Basic Settings page displa
ys. Specify Your Internet Settings
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Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							5.
From the Internet Connection Type menu, select DHCP. The 
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 
router’s WAN
(or Inter
net) interface. The number after the slash (/) is the length of the prefix, which is also i\
ndicated 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 router’s LAN
interf

ace. The number after the slash (/) is the length of the prefix, which is also i\
ndicated by the underline
(_) under the IPv6 address. If no address is acquired, the field displays Not Available.
6. (Optional) In the User Class (If Required) field, enter a host name.
Most people can lea

ve this field blank, but if your ISP gave you a specific host name, enter it here.
7. (Optional) In the 
Domain Name (If Required) field, enter a domain name.
Y
ou 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. For example, Earthlink Cable might require a host name of home, and
Comcast sometimes supplies a domain name.
8. 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 y

our ISP’s primary DNS server. If a secondary DNS server address is available, enter it also.
9. Select an IP Address Assignment radio button: Specify Your Internet Settings
42
Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							•
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 ho w the router assigns IPv6 addresses to the devices on your home network (the LAN).
10. (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.
11. Clic
k the Apply button.
Y

our 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. Enter 
http://www.routerlogin.net.
A login window opens.
3. Enter the 
router user name and password.
The user name is admin. The default password is password. The user name and password are case-sensitive.
The BASIC Home page displays.
4. Select 
ADVANCED > Advanced Setup > IPv6.
The Basic Settings page displa
ys. Specify Your Internet Settings
43
Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							5.
From the Internet Connection Type menu, select 6rd Tunnel. The 
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 router’s LAN interface. The number after the slash (/) is the length of
the prefix, which is also indicated b

y the underline (_) under the IPv6 address. If no address is acquired, the
field displays Not Available.
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.
• 6r

d 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 y

our 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. Specify Your Internet Settings
44
Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							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. Clic
k the Apply button.
Y

our settings are saved.
Set Up an IPv6 PPPoE Internet Connection To set up a PPPoE IPv6 Internet connection: 1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter 
http://www.routerlogin.net.
A login window opens.
3. Enter the 
router user name and password.
The user name is admin. The default password is password. The user name and password are case-sensitive.
The BASIC Home page displays.
4. Select 
ADVANCED > Advanced Setup > IPv6.
The Basic Settings page displa
ys.
5. From the 
Internet Connection Type menu, select PPPoE. Specify Your Internet Settings
45
Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							The page adjusts:
The 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 
router’s WAN
(or Inter
net) interface. The number after the slash (/) is the length of the prefix, which is also i\
ndicated 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 router’s LAN
interf

ace. The number after the slash (/) is the length of the prefix, which is also i\
ndicated by the underline
(_) under the IPv6 address. If no address is acquired, the field displays Not Available.
6. In the Login field, enter the login information for the ISP connection.
This is usually the name that y
 ou use in your email address. For example, if your main mail account is
[email protected], you would type JerAB in this field. Some ISPs (like Mindspring, Earthlink, and T-DSL) require
that you use your full email address when you log in. If your ISP requires your full email address, type it in this
field.
7. In the 
Password field, enter the password for the ISP connection.
8. In the 
Service Name field, enter a service name.
If your ISP did not provide a service name, leave this field blank. Specify Your Internet Settings
46
Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							The default setting of the Connection Mode menu is Always On to provide a steady IPv6
connection.
The router never terminates the connection. If the connection is terminated, for
e

xample, when the modem is turned off, the 
router attempts to reestablish the connection
immediately after the PPP
oE connection becomes available again.
Note
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 y

our 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 ho
 w 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. Clic
k the Apply button.
Y

our 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
fix

es 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: Specify Your Internet Settings
47
Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							•
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.
Table 3. Common MTU sizes Application
MTU
The largest Ethernet packet size. This setting is typical for connections that do not use PPPoE
or VPN and is the default value for NETGEAR routers, adapters, and switches.
1500
Used in PPP
oE environments.
1492
Maximum size to use for pinging. (Larger packets are fragmented.)
1472
Used in some DHCP environments.
1468
Usable by AOL if you do not send or receive large email attachments, for example.
1460
Used in PPPoA environments.
1458
Used in PPTP environments or with VPN.
1436
Maximum size for AOL DSL.
1400
Change the MTU Size
WARNING:An incorrect MTU setting can cause Internet communication problems. For example,
you might not be able to access certain websites, frames within websites, secure
login pages, or FTP or POP servers. Change the MTU only if you are sure that it is
necessary for your ISP connection. Specify Your Internet Settings
48
Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							To change the MTU size:
1.
Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter http://www.routerlogin.net.
A login window opens.
3. Enter the router user name and password.
The user name is admin. The default password is password. The user name and password are case-sensitive.
The BASIC Home page displays.
4. Select 
ADVANCED > Setup > WAN Setup.
The 
WAN Setup page displays.
5. In the MTU Size field, enter a value from 64 to 1500.
The nor

mal MTU (maximum transmit unit) value for most Ethernet networks is 1500 bytes, 1492 bytes for PPPoE
connections, or 1436 for PPTP connections.
6. Click the Apply button.
Y

our settings are saved. Specify Your Internet Settings
49
Nighthawk AC1900 Smart WiFi Router Model R6900 
						

							4
Optimize Performance
You can set up the router to optimize performance for applications such as multiplayer gaming, peer-to-peer connections,
or real-time comm
unications such as instant messaging. By default, the router uses Wi-Fi Multimedia Quality of Service
(WMM QoS).
This chapter contains the following sections:
• Prioritize Internet Traffic With Quality of Service
 on page 51
• Optimiz
e Internet Gaming With Upstream QoS on page 51
• Add Upstream QoS Pr

iority Rules
 on page 53
• Optimiz
e Video Streaming With Downstream QoS on page 
62
• Add Downstream QoS Priority Rules
 on page 64
• Improve Network Connections With Universal Plug and Play
 on page 68
• Manage 
Wi-Fi Multimedia Quality of Service on page 
69 50