Netgear Cg3100d2 Owners Manual

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
Customizing Your Network5-5
v1.0, July 2009
Configuring Universal Plug and Play (UPnP)
Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, access 
the network and connect to other devices as need ed. UPnP devices can automatically discover the 
services from other registered UPnP devices on the network.
To configure UPnP:
1. In
 the main menu, under Advanced, select UPnP. The UPnP screen displays.
Figure  5-3
2.Select the  Turn UPnP On  check box. The default setting is disabled, which prevents the 
gateway from allowing any device  to automatically control of its the resources, such as port 
forwarding.
3. Enter the following information:
• Adve
rtisement Period. Enter how often the gateway broadcasts its UPnP information. 
The default is 30 minutes.Shorter durations will ensure that control points have current 
device status at th e expense of additional network  traffic. Longer durations may 
compromise the freshness of the device status  but can significantly reduce network traffic.
• Adve
rtisement Time to Live . Enter the time to live for the advertisement, which is 
measured in hops (steps) for each UPnP packet  that is sent. A hop is the number of steps 
that are allowed to propagate for each UP nP advertisement before it disappears. The 
number of hops can range from 1 to 255. Th e default value for the advertisement time to 
live is 4 hops, which should be fine for most home networks. If you notice that some 
devices are not being updated or reached corre ctly, you might need to increase this value 
slightly. 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
5-6Customizing Your Network
v1.0, July 2009
The UPnP Portmap Table displays the IP address of each UPnP device that is currently 
accessing the gateway and which internal and external ports of the gateway were opened by 
that device. The UPnP Portmap Table also displa ys the protocol for the port that was opened 
and if that port is still active for each IP address.
4. Perform one of the following actions:
• Click  Ap
 ply to save your settings.
• Click  Ca
 ncel to disregard any unsaved changes.
• Click  R
efresh  to update the UPnP Portmap Table a nd to show the active ports that are 
currently opened by UPnP devices.
NAT
You can enable or disable network address transl ation (NAT) protocol. In the main menu, under 
Advanced, select NAT The following screen displays.
Figure  5-4
Normally the  Tu r n  N AT  O n  check box should be selected, which is the default setting. 
						

							6-1
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Chapter 6 
T
roubleshooting
This chapter gives information ab out troubleshooting your Wireless Cable Voice Gateway . For the 
common problems listed, go  to the section indicated.
Tip: NETGEAR provides helpful articles, docu mentation, and the latest software 
updates at  http://www.netgear.com/support .
• Have I connected the gateway correctly? Go to  “Basic Functions” on page  6-1 .
• I cannot access the gateway conf iguration with my browse
 r.
Go to  “Connecting to the Gateway’s Main Menu” on page  6-3 .
• I have configured the gateway  but 
 I cannot access the Internet.
Go to  “T
roubleshooting the ISP Connection” on page  6-4 .
• I cannot remember the gateway’s configuration pa ssword
  or I want to clear the configuration 
and start over again.
Go to  “Factory Default Settings” in Appendix  A .
Basic Functions
After you have turned on power to the gateway, you should do the following:
1. When power is first applied, ve rify that the Power LED is on.
2. V
erify that the numbered Ethe rnet LEDs come on momentarily.
3. After a few 
 seconds, verify that the Local port  Link LEDs are lit for any local ports that are 
connected.
If any of these conditions does not occur,  refer 
 to the appropriate following section. 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
6-2Troubleshooting
v1.0, July 2009
Using LEDs to Troubleshoot
The following table provides help when using the LEDs for troubleshooting.
Ta b l e 6-1.  Using LEDs to Troubleshoot
LED BehaviorAction
All LEDS are off when the gateway 
is plug
 ged in. Make sure that the power cord is properly connected to your gateway 
and
 that the power supply adapter  is properly connected to a 
functioning power outlet. 
Check that you are using the 12 VDC powe
 r adapter supplied by 
NETGEAR for this product.
If the error persists, you have a hardware problem and should contact 
techni
 cal support.
All LEDs Stay On • Clear the gateway’s configuration to  facto
 ry defaults. This will set the 
gateway’s IP address  to 192.168.0.1. See “Factory Default Settings” 
in Appendix  A. 
• If the error persists, you might have a hardware problem and should  cont
 act technical support.
LAN LED is off for a port with an 
Eth
 ernet connection. • Make sure that the Ethernet cabl
e conne ctions are secure at the 
gateway and at the hub or PC.
• Make sure that power is turned on to the connected hub or PC.
• Be sure you are using the correct cable.
Internet LED is off and the 
gatewa
 y is connected to the cable 
television cable. • Make sure that the coaxial cable connections are secure at the 
gatew ay and at the wall jack.
• Make sure that your cable internet service has been provisioned by  your 
 cable service provider. Your provider should verify that the signal 
quality is good enough for cable modem service.
• Remove any excessive splitters you may have on your cable line. It  may be necessa
 ry to run a “home run” back to the point where the 
cable enters your home. 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
Troubleshooting 6-3
v1.0, July 2009
Connecting to the Gateway’s Main Menu
If you are unable to access the gateway’s main menu from a computer on your local network, 
check the following:
• Check the Ethernet connection between the co mpu
 ter and the gateway as described in the 
previous section.
• Make sure that your PC’s IP address is on the same subnet as the
  gateway. If you are using the 
recommended addressing scheme, your PC’s address  should be in the range of 192.168.0.10 to 
192.168.0.254. Refer to the link to the online document  “ITCP/IP Networking Basics” in 
Appendix  B for help configuring your computer.
Note: If your PC’s IP address is shown as 169.254.x.x:
Recent versions of Windows and Ma cOS will generat
 e and assign an IP 
address if the computer cannot reach  a DHCP server. These auto-generated 
addresses are in the range of 169.254.x.x.  If your IP address is in this range, 
check the connection from the PC to the gateway and reboot your PC.
• If your gateway’s IP address has been chan g
 ed and you don’t know the current IP address, 
clear the gateway’s configuration  to factory defaults. This will set the gateway’s IP address to 
192.168.0.1. This procedure is explained in  “Enabling Remote Management” on page 5-13 .
• Make sure your browser has Java, JavaScript,  or ActiveX enabled. If you 
 are using Internet 
Explorer, click Refresh to make sure that the Java applet is loaded.
• Try quitting the browser and launching it again.
• Make sure you are using the correct login info rmation
 . The gateway has two user names both 
lower-case ( Caps Lock should be off):
– The superuser login name is  mso 
 with the default password of changeme.
– The other login name is  ad
 min with the default password of  password. 
If the gateway does not save changes you have made, check the following:
• When entering configuration se tt
 ings, be sure to click the Apply button before moving to 
another screen, or your changes are lost. 
• Click the Refresh or Reload button in the Web 
 browser. The changes may have occurred, but 
the Web browser may be caching the old configuration. 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
6-4Troubleshooting
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Troubleshooting the ISP Connection
If your gateway is unable to access the Internet and your Cable Link LED is on, you may need to 
register the Cable MAC Address and/or Device MAC Address of you gateway with your cable 
service provider. 
Additionally, your PC may not have the gateway configured as its TCP/IP gateway. If your PC 
obtains its information from the gateway by DHCP, reboot the PC and verify the gateway address. 
See the link to the online document 
“ITCP/IP Networking Basics” in Appendix B.
Troubleshooting a TCP/IP Network Using a Ping Utility
Most TCP/IP terminal 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. Troubleshooting a TCP/IP 
network is made easier by using the ping utility in your PC or workstation.
Testing the LAN Path to Your Gateway
You can use ping to verify that the LAN path to your gateway is set up correctly.
To ping the gateway from a PC running Windows 95 or later:
1.From the Windows toolbar, click on the Start button and select Run.
2.In the field provided, type Ping followed by the IP address of the gateway, as in this example:
ping 192.168.0.1
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 >: bytes=32 time=NN ms TTL=xxx
If the path is not working, you see this message:
Request timed out 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
Troubleshooting6-5
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If the path is not working correctly, you could have one of the following problems:
• Wrong physical connections.
– Make sure the LAN port LED is on. If the LED is off, see “Using LEDs to 
Troubleshoot” on page 6-2.
– Check that the corresponding Link LEDs are on for your network interface card and 
for the hub ports (if any) that are connected to your workstation and gateway.
• Wrong network configuration.
– Verify that the Ethernet card driver software and TCP/IP software are both installed 
and configured on your PC or workstation.
– Verify that the IP address for your gateway and your workstation are correct and that 
the addresses are on the same subnet.
Testing the Path from Your PC to a Remote Device
After verifying that the LAN path works correctly, test the path from your PC to a remote device. 
From the Windows run menu, type:
PING -n 10 
where  is the IP address of a remote device such as your ISP’s DNS server.
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 gateway listed as the default gateway. If the IP 
configuration of your PC is assigned by DHCP, this information will not be visible in your 
PC’s Network Control Panel. Verify that the IP address of the gateway is listed as the default 
gateway. See the link to the online document 
“ITCP/IP Networking Basics” in Appendix B.
• 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.
• Check that your Cable Link LED is on.
• If your ISP assigned a host name to your PC, enter that host name as the Account Name in the 
Basic Settings screen. 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
6-6Troubleshooting
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							Default Settings and Technical SpecificationsA-1
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Appendix A 
Default Settings and T
echnical Specifications
Factory Default Settings
You can return the gateway to its factory settings.  On the bottom of the gateway, press and hold the 
Restore Factory Settings button 
 for over 7 seconds. The gateway resets, and returns to its 
factory settings.
 Your device will return to the factor y configuration settings shown in the 
following table.
Gateway Login
User login URL http://192.168.1.1
User name and password (case 
sen
 sitive) admin/password
Local Network (LAN) LAN IP 192.168.0.1
Subnet mask 255.255.255.0
DHCP server Enabled
DHCP starting IP address 192.168.0.10
DHCP Ending IP address 192.168.0.19
Firewall
Inbound communication from the Internet Disabled (except traffic on port 80, the http port)
Outbound communication to the Internet Enabled (all)
Source MAC filtering Disabled
Internet Connection WAN MAC address Use default hardware address
WAN MTU size 1500 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
A-2 Default Settings and Technical Specifications
v1.0, July 2009
Technical Specifications
The table below describes the technical specifications for the gateway.
Wireless
Wireless communicationEnabled
SSID nameWireless
SecurityDisabled
Broadcast SSIDEnabled
Transmission speedAutoa
Country/regionUnited States (varies by region)
RF channel6
Operating modeg and b
Data rateBest
Output powerFull
Access point Enabled
Authentication type Open System
Wireless card access list All wireless stations allowed
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.
FeatureDescription
Network Protocol and Standards Compatibility
Data and Routing Protocols:TCP/IP, DHCP server and client, DNS relay, NAT (many-to-one), 
TFTP client, VPN pass through (IPSec, PPTP)
Power Adapter
North America (input):120V, 60 Hz, input
All regions (output):15 V DC @ 1.2A output, 15W maximum
Physical Specifications
Dimensions:6.9 by 4.5 by 1.2 in. (175 by 114 by 30 mm)
Weight:0.68 lb (0.31 kg)