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Page 106 / 121 Scroll up to view Page 101 - 105
Troubleshooting
106
N600 Wireless Dual Band Router WNDR3400v2
•
When entering configuration settings, always click the
Apply
button before moving to
another screen or tab, or your changes are lost.
•
Click the
Refresh
or
Reload
button in the web browser. The changes might have
occurred, but the old settings might be in the web browser’s cache.
Incorrect Date or Time
Select
Advanced > Security > Schedule
to display the current date and time. The router
uses the Network Time Protocol (NTP) to obtain the current time from one of several network
time servers on the Internet. Each entry in the log is stamped with the date and time of day.
Problems with the date and time function can include the following:
•
Date shown is January 1, 2000. This means the router has not yet successfully reached a
network time server. Check that your Internet access is configured correctly. If you have
just finished setting up the router, wait at least 5 minutes, and check the date and time
again.
•
Time is off by one hour. The router does not automatically sense daylight savings time. In
the Schedule screen, select the
Automatically adjust for daylight savings time
check
box.
Wireless Connectivity
If you are having trouble connecting wirelessly to the router, try to isolate the problem.
•
Does the wireless device or computer that you are using find your wireless network?
If not, check the Wireless LEDs on the front of the router. They should be lit. If they are
not, you can press the
WiFi On/Off
button on the back of the router to turn the router’s
wireless radio back on.
If you disabled the router’s SSID broadcast, then your wireless network is hidden and
does not show up in your wireless client's scanning list. (By default, SSID broadcast is
enabled.)
•
Does your wireless device support the security that you are using for your wireless
network (WPA or WPA2)?
•
If you want to view the wireless settings for the router, use an Ethernet cable to connect a
computer to a LAN port on the router. Then log in to the router and select
Setup >
Wireless Settings
see (
Basic Wireless Settings
on page
27).
Note:
Be sure to click
Apply
if you make changes.
Wireless Signal Strength
If your wireless device finds your network, but the signal strength is weak, check these
conditions:
Page 107 / 121
Troubleshooting
107
N600 Wireless Dual Band Router WNDR3400v2
•
Is your router too far from your computer, or too close? Place your computer near the
router, but at least 6 feet away, and see whether the signal strength improves.
•
Is your wireless signal blocked by objects between the router and your computer?
Restore the Factory Settings and Password
This section explains how to restore the factory settings, changing the router’s administration
password back to
password
. You can erase the current configuration and restore factory
defaults in two ways:
•
Use the Erase function of the router (see
Erase
on page
72).
•
Use the Restore Factory Settings button on the back of the router. See
Factory Settings
on page
109. If you restore the factory settings and the router fails to restart, or the green
Power/Test LED continues to blink, the unit might be defective. If the error persists, you
might have a hardware problem and should contact technical support at
.
Troubleshoot Your Network Using the Ping Utility
Most network devices and routers contain a ping utility that sends an echo request packet to
the designated device. The device then responds with an echo reply. You can easily
troubleshoot a network by using the ping utility in your computer or workstation.
Test the LAN Path to Your Router
You can ping the router from your computer to verify that the LAN path to your router is set up
correctly.
To ping the router from a running Windows PC:
1.
From the Windows toolbar, click
Start
, and then select
Run
.
2.
In the field provided, type
ping
followed by the IP address of the router, as in this example:
ping www.routerlogin.net
3.
Click
OK
.
You should see a message like this one:
Pinging <IP address > with 32 bytes of data
If the path is working, you see this message:
Reply from < IP address >: 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:
Page 108 / 121
Troubleshooting
108
N600 Wireless Dual Band Router WNDR3400v2
•
Wrong physical connections
For a wired connection, make sure that the numbered LAN port LED is on for the port to
which you are connected.
Check that the appropriate LEDs are on for your network devices. If your router and
computer are connected to a separate Ethernet switch, make sure that the link LEDs are
on for the switch ports that are connected to your computer and router.
•
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 are on the same subnet.
Test the Path from Your Computer to a Remote Device
After verifying that the LAN path works correctly, test the path from your computer to a remote
device.
1.
From the Windows toolbar, click the
Start
button, and then select
Run
.
2.
In the Windows Run window, type:
ping -n 10
<
IP address
>
where <IP address> is the IP address of a remote device such as your ISP’s DNS server.
If the path is functioning correctly, replies like those shown in the previous section are
displayed.
If you do not receive replies:
•
Check that your computer has the IP address of your router listed as the default gateway.
If the IP configuration of your computer is assigned by DHCP, this information is not be
visible in your computer’s Network Control Panel. Verify that the IP address of the router
is listed as the default gateway.
•
Check to see that the network address of your computer (the portion of the IP address
specified by the subnet mask) is different from the network address of the remote device.
•
Check that your cable or DSL modem is connected and functioning.
•
If your ISP assigned a host name to your computer, enter that host name as the account
name in the Internet Settings screen.
•
Your ISP could be rejecting the Ethernet MAC addresses of all but one of your computers.
Many broadband ISPs restrict access by allowing traffic only from the MAC address of your
broadband modem, but some ISPs additionally restrict access to the MAC address of a
single computer connected to that modem. If this is the case, configure your router to “clone”
or “spoof” the MAC address from the authorized computer.
Page 109 / 121
109
A
A.
Supplemental Information
This appendix provides factory default settings and technical specifications for the N600
Wireless Dual Band Router WNDR3400v2.
Factory Settings
You can return the router to its factory settings. Use the end of a paper clip or some other
similar object to press and hold the
Restore Factory Settings
button on the back of the
router for at least 5 seconds. The router resets and returns to the factory settings.
Your
device returns to the factory configuration settings shown in the following table.
Table 4.
Factory default settings
Feature
Default behavior
Router login
User login URL
www.routerlogin.com or www.routerlogin.net
User name (case-sensitive)
admin
Login password (case-sensitive)
password
Internet
connection
WAN MAC address
Use default hardware address
WAN MTU size
1500
Port speed
Autosensing
Local network
(LAN)
LAN IP
192.168.1.1
Subnet mask
255.255.255.0
DHCP server
Enabled
DHCP range
192.168.1.2 to 192.168.1.254
Time zone
Pacific time
Time zone daylight saving time
Disabled
Allow a registrar to configure this
router
Enabled
Page 110 / 121
Supplemental Information
110
N600 Wireless Dual Band Router WNDR3400v2
Local network
(LAN) continued
DHCP starting IP address
192.168.1.2
DHCP ending IP address
192.168.1.254
DMZ
Disabled
Time zone
GMT for WW except NA and GR, GMT+1 for GR, GMT-8
for NA
Time zone adjusted for daylight
savings time
Disabled
SNMP
Disabled
Firewall
Inbound (communications coming
in from the Internet)
Disabled (except traffic on port 80, the HTTP port)
Outbound (communications going
out to the Internet)
Enabled (all)
Source MAC filtering
Disabled
Wireless
Wireless communication
Enabled
SSID name
See router label
Security
Enabled
Broadcast SSID
Enabled
Transmission speed
Auto
*
Country/region
United States in the US; otherwise varies by region
RF channel
6 until region selected
Operating mode
Up to 300 Mbps
Data rate
Best
Output power
Full
Firewall
Inbound (communications coming
in from the Internet)
Disabled (bars all unsolicited requests)
Outbound (communications going
out to the Internet)
Enabled (all)
*. 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.
Table 4.
Factory default settings
(continued)
Feature
Default behavior

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