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Specify Your Internet Settings
36
Nighthawk AC1900
Smart
WiFi
Router Model
R7000
The screen 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 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 router’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.
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 [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.
Note:
The default setting of the Connection Mode field is Always On to provide
a steady IPv6 connection. The router never terminates the connection. If the
connection is terminated, for example, when the modem is turned off, the router
attempts to reestablish the connection immediately after the PPPoE connection
becomes available again.
9.
Specify how the router assigns IPv6 addresses to the devices on your home network (the
LAN) by selecting one of the following radio buttons:
Page 37 / 169
Specify Your Internet Settings
37
Nighthawk AC1900
Smart
WiFi
Router Model
R7000
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.
10.
(Optional) Select the
Use This Interface ID
check box and specify the interface ID that you
want 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.
Click the
Apply
button.
Change the MTU Size
The maximum transmission unit (MTU) is the largest data packet a network device transmits.
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 has 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 have severe performance problems.
You used a program to optimize MTU for performance reasons, and now you have
connectivity or performance problems.
Note:
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.
To change the MTU size:
1.
Launch an Internet browser from a computer or wireless device that is connected to the
network.
2.
Type
or
.
Page 38 / 169
Specify Your Internet Settings
38
Nighthawk AC1900
Smart
WiFi
Router Model
R7000
A login screen displays.
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 screen displays.
4.
Select
ADVANCED > Setup > WAN Setup
.
5.
In the
MTU Size
field, enter a value from 64 to 1500.
6.
Click the
Apply
button.
Your change is saved.
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 2.
Common MTU sizes
MTU
Application
1500
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.
1492
Used in PPPoE environments.
1472
Maximum size to use for pinging. (Larger packets are fragmented.)
1468
Used in some DHCP environments.
1460
Usable by AOL if you do not have large email attachments, for example.
1436
Used in PPTP environments or with VPN.
1400
Maximum size for AOL DSL.
576
Typical value to connect to dial-up ISPs.
Page 39 / 169
39
4
4.
Optimize Performance
This chapter contains the following sections:
Prioritize Internet Traffic with Quality of Service
Optimize Internet Gaming with Upstream QoS
Add Upstream QoS Rules
Optimize Video Streaming with Downstream QoS
Improve Network Connections with Universal Plug and Play
Wi-Fi Multimedia Quality of Service
Page 40 / 169
Optimize Performance
40
Nighthawk AC1900
Smart
WiFi
Router Model
R7000
Prioritize Internet Traffic with Quality of Service
You can use Quality of Service (QoS) to assign high priority to gaming and streaming video
from the Internet.
Upstream QoS
(gaming)
Downstream QoS
(video streaming)
Internet
Figure 6. You can prioritize downstream traffic, upstream traffic, or both
Optimize Internet Gaming with Upstream QoS
Upstream Quality of Service (QoS) assigns high priority to Internet traffic from your Xbox
gaming system.
Best effort traffic
High priority traffic
Internet
Figure 7. Upstream QoS assigns high priority to gaming traffic from your Xbox
NETGEAR recommends that only gamers enable the Upstream QoS feature. If you do not
game and you turn on this feature, some applications might not perform as well as usual.

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