Specify Your Internet Settings

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Nighthawk AC1900

Smart

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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:

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

http://www.routerlogin.net

or

.

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.

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

Optimize Performance

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Nighthawk AC1900

Smart

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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.

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.