Netgear Dgnd4000 N750 Wireless Dual Band Gigabit Adsl2 Plus Modem Router User Manual

Troubleshooting 
141  N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
•When entering configuration settings, be sure to click Apply before moving to another 
screen or tab, or your changes could be lost.
•Click Refresh or Reload in the web browser. The changes might have occurred, but the 
web browser might be caching the old configuration.
Changes Not Saved
If the wireless modem router does not save the changes you make in the wireless modem 
router interface, check the following:
•When...

Troubleshooting 
142 N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
•If you want to view the wireless settings for the wireless modem router, use an Ethernet 
cable to connect a computer to a LAN port on the wireless modem router. Then log in to 
the wireless modem router and select Setup > Wireless Settings see (
Basic Wireless 
Settings on page 34). 
Note:Be sure to click Apply if you made changes.
Wireless Signal Strength
If your wireless device finds your network, but the signal strength...

Troubleshooting 
143  N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
To ping the wireless modem router from a computer running Windows:
1. From the Windows toolbar, click Start, and select Run.
2. In the field provided, type ping followed by the IP address of the wireless modem router, as 
in this example:
ping www.routerlogin.net
3. Click OK.
You should see a message like this one:
Pinging  with 32 bytes of data
If the path is working, you see this message:
Reply from < IP address >:...

Troubleshooting 
144 N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
•Check that your computer has the IP address of your wireless modem router listed as the 
default gateway. If the IP configuration of your computer is assigned by DHCP, this 
information is not visible in your computer’s Network Control Panel. Verify that the IP 
address of the wireless modem router is listed as the default gateway.
•Check to see that the network address of your computer (the portion of the IP address...

145
A
A.   Supplemental Information
Factory settings and technical 
specifications
This appendix provides factory default settings and technical specifications for the N750 
Wireless Dual Band Gigabit ADSL Modem Router DGND4000.
•Factory Settings 
•Technical Specifications  

 Supplemental Information
146 N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
Factory Settings
You can return the wireless modem 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 wireless modem router resets and returns to the 
factory settings.
 Your device returns to the factory configuration settings shown in the 
following table.
Table 13....

 Supplemental Information
147  N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
WirelessWireless communicationEnabled
SSID nameSee router label
SecurityEnabled
Broadcast SSIDEnabled
Transmission speedAuto1
Country/regionUnited States in the US; otherwise varies by region
RF channel6 until region selected
Operating modeUp to 300 Mbps
Data rateBest
Output powerFull
FirewallInbound (communications coming 
in from the Internet)Disabled (bars all unsolicited requests)
Outbound (communications going...

 Supplemental Information
148 N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
Technical Specifications
Table 14.  DGND4000 Router specifications  
FeatureDescription
Data and routing protocolsTCP/IP, RIP-1, RIP-2, DHCP, PPPoE, Dynamic DNS, UPnP, and SMB
Power adapter• North America:  120V,  60  Hz,  input
• UK, Australia: 240V, 50 Hz, input
• Europe: 230V, 50 Hz, input
• All regions (output): 12V DC @ 5A, output
Dimensions8.8 in. x 6.8 in. x 1.2 in. (223 x 153 x 31 mm)
Weight1.2 lbs (0.5 kg)...

 Supplemental Information
149  N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
Operating frequency range2.4 GHz
2.412–2.462 GHz (US) 
2.412–2.472 GHz (Japan) 
2.412–2.472 GHz (Europe ETSI)
5 GHz
5.18–5.24 + 5.745–5.825 GHz (US) 
5.18–5.24 GHz (Europe ETSI)
FCC:   
      5.25–5.35 GHz (DFS band) 
      5.47–5.725 GHz (DFS band) 5600–5650 MHz is disabled and  
      unavailable for use
CE (Europe ETSI):   
      5.25–5.35 GHz (DFS band) 
      5.47–5.725 GHz (DFS band) 
802.11 securityWPA-PSK,...

150
Index
A
AC power adapter input 14
access
remote 122
viewing logs 89
access points 105
accessing remote computer 109
adding
custom services 115
guest network 38
priority rules 57
QoS policy 56
wireless devices 26
address reservation 55
ADSL microfilters 18
ADSL port 13
ADSL setup 49
advertisement period 124
alerts, emailing 82
applications, QoS for online gaming 57
approved USB devices 69
attached devices 31
authentication, required by mail server 82
automatic firmware checking 84
automatic Internet...