Netgear C6900 High Speed Cable Modem Router User Manual

							21
3
3.   Specify Your Internet Settings
Usually, the quickest way to set up the modem router to use your Internet connection is to allow 
the genie to detect the Internet connection when you first access the modem router with an 
Internet browser. You can also customize or specify your Internet settings. 
This chapter contains the following sections:
•View Modem Router Initialization 
•Manually Set Up the Internet Connection 
•Specify an IPv6 Internet Connection 
•Change the MTU Size  
						

							Specify Your Internet Settings 22
Nighthawk AC1900
 WiFi Cable Modem  Router 
Specify the Cable Connection Starting Frequency
The starting frequency is automatically generated. For most Internet con\
nections, you do not 
need to specify this information. If you need to enter a starting freque\
ncy, contact your 
Internet provider.
To change the starting frequency:
1.  Launch a web browser from a computer or wireless device that is connecte\
d to the 
network.
2.  T
ype  http://routerlogin.net  or http://192.168.0.1.
A login window opens.
3.  Enter the modem router user name and password.
The user name is  admin. 
 The user name and password are case-sensitive.
The BASIC Home page displays.
4.  Select  Cable Connection.
The page displays the status of all downstream and upstream channels.
5.  In the Starting Frequency field, type a number
 . 
6.  Click the  Apply button.
Your settings are saved. 
						

							Specify Your Internet Settings 23
 Nighthawk AC1900
 WiFi Cable Modem  Router
View Modem Router Initialization 
You can track the initialization procedure of the modem router, and get d\
etails about the 
downstream and upstream cable channel. The time is displayed after the modem router is 
initialized.
The modem router automatically goes through the following steps in the p\
rovisioning  process:
1.  Scans and locks the downstream frequency and then ranges the upstream ch\
annels.
2.  Obtains a W
 AN address for the modem router.
3.  Connects to the Internet.
To view the status of the modem router initialization:
1. Launch a web browser from a computer or wireless device that is connecte\
d to the 
network.
2.  T
ype  http://routerlogin.net  or http://192.168.0.1.
A login window opens.
3.  Enter the modem router user name and password.
The user name is  admin. 
 The user name and password are case-sensitive.
The BASIC Home page displays.
4.  Select  Cable Connection.
The Startup Procedure section displays the initialization progress. The page also displays  the status of all downstream and upstream channels.(Y
 ou must scroll down to view all the 
channels.) The number of downstream and upstream channels that are locked depends 
on the number of channels that your Internet provider uses. 
						

							Specify Your Internet Settings 24
Nighthawk AC1900
 WiFi Cable Modem  Router 
Manually Set Up the Internet Connection
In most situations, you do not need to change these settings. NETGEAR re\
commends that 
you use the default settings for DHCP because most cable Internet servic\
es provide the IP 
address through DHCP.
To specify the Internet connection settings:
1. Launch an Internet browser from a computer or wireless device that is co\
nnected to the 
network.
2.  T
ype  http://www.routerlogin.net  or http://www.routerlogin.com .
A login window opens.
3.  Enter the modem router user name and password.
The user name is  admin. 
 The user name and password are case-sensitive.
The BASIC Home page displays.
4.  Select  ADV
 ANCED > Setup > Internet.
5.  If your Internet connection requires an account name or host name, type \
it in the  Account 
Name (If Required) field.
6.  If your Internet connection requires a domain name, type it in the  Domain Name (If 
Required) field. 
For the other sections in this page, the default settings usually work, \
but you can change 
them.
7.  For the  Internet IP 
 Address setting, select one of the following radio buttons:
• Get Dynamically from ISP . 
 Your ISP uses DHCP to assign your IP address. Your ISP 
automatically assigns these addresses.
Scroll to 
view more 
settings 
						

							Specify Your Internet Settings 
25  Nighthawk AC1900 WiFi Cable Modem Router
•Use Static IP Address. Enter the IP address, IP subnet mask, and the gateway IP 
address that your ISP assigned. The gateway is the ISP modem router to which your 
modem router connects.
8. For the Domain Name Server (DNS) Address setting, select one of the following radio 
buttons:
•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 your ISP’s primary DNS server. If a secondary 
DNS server address is available, enter it also. 
9. For the Router MAC Address setting, select one of the following radio buttons:
•Use Default Address. Use the default MAC address.
•Use Computer MAC Address. The modem router captures and uses the MAC 
address of the computer that you are now using. You must use the one computer that 
the ISP allows.
•Use This MAC Address. Enter the MAC address that you want to use.
10. Click the Apply button.
Your settings are saved.
If the NETGEAR website does not display within one minute, see Chapter 8, 
Troubleshooting.
Specify an IPv6 Internet Connection
To specify an IPv6 Internet connection:
1. Launch an Internet browser from a computer or wireless device that is connected to the 
network.
2. Type http://www.routerlogin.net or http://www.routerlogin.com.
A login window opens.
3. Enter the modem router user name and password.
The user name is admin. The user name and password are case-sensitive.
The BASIC Home page displays. 
						

							Specify Your Internet Settings 26
Nighthawk AC1900
 WiFi Cable Modem  Router 
4. Select  ADVANCED > Advanced Setup > IPv6.
If your Internet provider supports IIPV6, the  System Delegated Prefix field displays IPv6 
information.
5.  Specify how the modem router assigns IPv6 addresses to the devices on yo\
ur home 
network (the LAN) by selecting one of the following radio buttons:
• 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.
6.  Complete the fields in the Server Settings section.
7.  Click the  Apply button.
Your settings are saved.
Change the MTU Size
The maximum transmission unit (MTU) is the largest data packet a netwo\
rk 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 “fr\
agmented” to 
accommodate the device with the smallest MTU. 
The best MTU setting for NETGEAR equipment is often the default value. I\
n some situations,  changing the value fixes one problem but causes another
 . Leave the MTU unchanged unless 
one of these situations occurs:
• Y
ou experience problems connecting to your ISP or other Internet service,\
 and the 
technical support of either the ISP or NETGEAR recommends changing the M\
TU 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\
- Y
ahoo email 
						

							Specify Your Internet Settings 27
 Nighthawk AC1900
 WiFi Cable Modem  Router
-MSN portal
- America Online’
 s DSL service
• Y
ou use VPN and have severe performance problems.
•Y
ou used a program to optimize MTU for performance reasons, and now you h\
ave 
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 co\
nnected to the 
network.
2.  T
ype  http://www.routerlogin.net  or http://www.routerlogin.com .
A login window opens.
3.  Enter the modem router user name and password.
The user name is  admin. 
 The user name and password are case-sensitive.
The BASIC Home page displays.
4.  Select  ADV
 ANCED > 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  
						

							Specify Your Internet Settings 28
Nighthawk AC1900
 WiFi Cable Modem  Router 
until the problem goes away. The following table describes common MTU sizes and 
applications.  
Table 1.  Common MTU sizes  
MTUApplication
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, adapte\
rs, 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. 
						

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4
4.   Control Access to the Internet
The modem router comes with a built-in firewall that helps protect your home network from 
unwanted intrusions from the Internet.
This chapter includes the following sections:
•Set Up Parental Controls 
•Block Access to Your Network 
•Use Keywords to Block Internet Sites 
•Block Services from the Internet 
•Schedule When to Block Internet Sites and Services 
•Avoid Blocking on a Trusted Computer 
•Set Up Security Event Email Notifications  
						

							Control Access to the Internet 30
Nighthawk AC1900
 WiFi Cable Modem  Router 
Set Up Parental Controls
The first time that you select  Parental Controls from the BASIC Home page, your browser 
goes to the  Parental Controls  website, where you can learn more about Parental Controls. To 
set up Parental Controls, you must download the genie app.
To set up Parental Controls:
1.  Launch an Internet browser from a computer or WiFi device that is connec\
ted to the 
network.
2.  T
ype  http://www.routerlogin.net .
A login window opens.
3.  Enter the user name and password for the  modem router.
The user name is  admin. 
 The user name and password are case-sensitive.
The BASIC Home page displays.
4.  Select  Parental Controls.
The Parental Controls website opens.
5.  Click the button for the genie app or version that you want to download \
and use.
6.  Follow the onscreen instructions to download and install the genie app.
7.  Open the genie app and select  Parental Controls.
Live Parental Controls automatically starts.
8.  Click the  Next button, read the note, and click the  Next button again.
Because Live Parental Controls uses free OpenDNS accounts, you are promp\
ted to log 
in or create a free account.
9.  Select a radio button as follows:
• If you already own an OpenDNS account, leave the  Ye
 s radio button selected. 
• If you did not yet create an OpenDNS account, select the No radio button.
If you are creating an account, the Create a free OpenDNS account page d\
isplays.
Do the following: a. Complete the fields.
b.  Click the Next  button.