Customize the Internet Settings

31

AC1600 WiFi Cable Modem Router

The following table describes the fields on the Internet Setup page.

Field

Description

Account Name (If Required)

Enter the account name provided by your cable service provider. This

name might also be called the host name. If you do not know or did not

receive an account name, leave the default name, which is the model

number of the modem router.

Domain Name (If Required)

Enter the domain name provided by your cable service provider. If you do

not know the domain name, leave this field blank.

Internet IP Address

Get Dynamically from ISP

Your cable service provider uses DHCP to assign your IP address. Your

cable service provider automatically assigns these addresses.

Use Static IP Address

Enter the IP address, IP subnet mask, and gateway IP address that your

cable service provider assigned to you. The gateway is the provider

gateway to which your modem router connects.

Domain Name Server (DNS) Address

The DNS server is used to look up site addresses based on their names.

Get Dynamically from ISP

Your cable service provider uses DHCP to assign your DNS servers. Your

cable service provider automatically assigns this address.

Use These DNS Servers

If you know that your cable service provider does not automatically transmit

DNS addresses to the modem router during login, select this option, and

enter the IP address of your cable service provider primary DNS server. If

secondary and tertiary DNS server addresses are available, enter these

also.

7.

If you changed the settings, click the

Apply

button.

Your settings are saved.

Customize the Internet Settings

32

AC1600 WiFi Cable Modem Router

Manage the MTU Size

The maximum transmission unit (MTU) is the largest data packet that 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.

Table 4.

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 modem 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 send or receive large email attachments, for example.

Customize the Internet Settings

33

AC1600 WiFi Cable Modem Router

1436

Used in PPTP environments or with VPN.

1400

Maximum size for AOL DSL.

Table 4.

Common MTU sizes (continued)

MTU

Application

Customize the Internet Settings

34

AC1600 WiFi Cable Modem Router

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.



To change the MTU size:

1.

Launch an Internet browser from a computer or WiFi device that is connected to the

network.

2.

Type

.

A login window opens.

3.

Type

admin

for the user name and type your password.

If you did not yet personalize your password, type

password

for the password.

4.

Click the

OK

button.

The BASIC Home page displays.

5.

Select

ADVANCED > Setup > WAN Setup

.

The WAN Setup page displays.

6.

In the

MTU Size

field, enter a value from 256 to 1500.

The default value is 1500.

7.

Click the

Apply

button.

Your settings are saved.

35

4

4.

Manage the Basic WiFi Network

Settings

This chapter describes how to configure the basic settings for the main WiFi network and guest

WiFi network and how to use the WPS wizard.

This chapter contains the following sections:

•

Manage the Basic WiFi Settings and WiFi Security of the Main Network

•

Use the WPS Wizard to Add a Device to the WiFi Network

•

Manage the Basic WiFi Settings and WiFi Security of the Guest Network

Note:

For information about the managing the advanced WiFi settings, see

Chapter 11, Manage the Advanced WiFi Network Settings

.