Troubleshooting

32

Troubleshooting Internet Browsing

If your N750 wireless gigabit router can obtain an IP address but your computer is unable to load

any Web pages from the Internet, check the following.

•

Your computer might not recognize any DNS server addresses.

A DNS server is a host on the Internet that translates Internet names (such as www addresses)

to numeric IP addresses. Typically your ISP provides the addresses of one or two DNS servers

for your use. If you entered a DNS address when you configured the N750 wireless gigabit

router, restart your computer. Alternatively, you can configure your computer manually with

DNS addresses, as explained in the documentation for your computer

.

•

Your computer might not have the N750 wireless gigabit router configured as its default

gateway.

Restart the computer, and verify that the N750 wireless gigabit router address (192.168.1.1) is

listed by your computer as the default gateway address.

Troubleshooting Connectivity Using the Ping Utility

Most computers and routers have a diagnostic utility called

ping

that sends an request to a target

device. The device then replies. The ping utility makes it easy to troubleshoot a network.

Testing the Path from a PC to Your Router

You can ping the N750 wireless gigabit router to verify that the LAN path from your computer to

your router is set up correctly.

The factory default N750 wireless gigabit router IP address is 192.168.1.1.

However, if the router detects a conflict with the address it gets from your

modem, it automatically picks a different address for itself. In this case, you can

log in to the router using

www.routerlogin.net

to verify its LAN IP address.

Select

LAN Setup

under Advanced on the main menu. Take note of the LAN

TCP/IP setup IP address, which should match the default gateway IP address on

your computer.

This section includes advanced troubleshooting techniques.

Troubleshooting

33

To ping the wireless router:

1.

From the Windows toolbar, click

Start

and select Run.

2.

In the field provided, type

Ping

followed by the address of the router, as in this example:

ping www.routerlogin.net

or

ping 192.168.1.1

3.

Click

OK

.

You should see a message like this one:

Pinging 192.168.1.1 with 32 bytes of data

If the path is working, you see this message:

Reply from 192.168.1.1: bytes=32 time=NN ms TTL=xxx

If the path is not working, you see this message:

Request timed out

If the path is not functioning correctly, you could have one of the following problems:

•

Wrong physical connections

–

Make sure that the LAN port light is on. If the light is off, follow the instructions in

“Front Panel” on page 3

.

–

Check that the corresponding lights are on for your computer’s network interface

card.

•

Wrong network configuration

–

Verify that the Ethernet card driver software and TCP/IP software are both installed

and configured on your computer.

–

Verify that the IP address for your router and your computer are correct and that the

addresses on both begin with 255.255.255.0.

Testing the Path from a PC to the Internet

After verifying that the path between your computer and the N750 wireless gigabit router works

correctly, test the path from your PC to the Internet. From the Windows Start > Run... menu, type:

PING -n 10

<IP address>

where <

IP address

> is the IP address of a remote device such as your ISP’s DNS server.

Troubleshooting

34

If the path is functioning correctly, replies as in the previous section are displayed. If you do not

receive replies:

•

Check that your PC has the IP address of your router listed as the default gateway. If the IP

configuration of your PC is assigned by DHCP, this information is not visible in your PC’s

Network Control Panel. Verify that the IP address of the router is listed as the TCP/IP default

gateway.

•

Check to see that the network address of your PC (the portion of the IP address specified by

the netmask) is different from the network address of the remote device.

•

If your ISP assigned a host name to your PC, enter that host name as the account name in the

Basic Settings screen.

Technical Specifications

35

Technical Specifications

Default Configuration Settings

This section provides factory default settings and technical specifications for the WNDR4000

N750 Wireless Dual Band Gigabit Router .

Table 4.

Wireless Router Default Configuration Settings

Feature

Default Setting

Smart Wizard

Enabled

Router Login

Router Login URL

http://www. routerlogin.net

or

http://www

.

routerlogin.com

Login name (case-sensitive) printed on

product label

admin

Login password (case-sensitive) printed

on product label

password

Internet Connection

WAN MAC address

Use default hardware address

MTU Size

1500

Local Network

Router LAN IP address printed on

product label (also known as modem IP

address)

192.168.1.1

Router Subnet

255.255.255.0

DHCP Server

Enabled

Time Zone

GMT - 8 (North America only);

other time zones vary by country and region

Time Zone Adjusted for Daylight Saving

Time

Disabled

Technical Specifications

36

Firewall

Inbound (communications coming in from

the Internet)

Disabled (bars all unsolicited requests)

Outbound (communications going out to

the Internet)

Enabled (all)

Wireless

Wireless Communication

Enabled

Name (2.4GHz b/g/n SSID)

NETGEAR

Name (5Ghz a/n SSID)

NETGEAR-5G

Security

Disabled

Broadcast SSID

Enabled

Country/Region

United States in the US, otherwise varies by region

11N 5GHz Channel

153 for North America, and

44 for most other countries

11N 2.4GHz Channel

Auto

Operating Mode

Up to 450Mbps at 5GHz and 145Mbps at 2.4GHz

a

Output Power

Full

a. Maximum Wireless signal rate derived from IEEE Standard 802.11 specifications. Actual throughput will

vary. Network conditions and environmental factors, including volume of network traffic, building

materials and construction, and network overhead lower actual data throughput rate.

Network Protocol and Standards Compatibility

Data and Routing Protocols:

TCP/IP, RIP-1, RIP-2, DHCP

PPP over Ethernet (PPPoE)

Power Adapter

North America

120V, 60 Hz, input

United Kingdom, Australia

240V, 50 Hz, input

Europe

230V, 50 Hz, input

All regions (output)

12 V DC @ 2.5A output, 30W maximum

Table 4.

Wireless Router Default Configuration Settings (continued)

Feature

Default Setting