Troubleshoot a TCP/IP Network Using a Ping Utility. Netgear CG3000DCR

CG3000DCR Advanced Cable Modem Gateway

Troubleshoot 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. You can easily troubleshoot a TCP/IP network by using the ping utility in your computer or workstation.

Test 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 computer running Windows 95 or later:

1.

From the Windows toolbar, click 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 <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 working correctly, you could have one of the following problems:

•

Wrong physical connections.

-

Make sure that the LAN port LED is lit. If the LED is off, see

Use LEDs to

Troubleshoot

on page 35.

-

Check that the corresponding LAN LEDs are lit 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 computer or workstation.

-

Verify that the IP address for your gateway and your workstation are correct and that the addresses are on the same subnet.

Troubleshooting

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CG3000DCR Advanced Cable Modem Gateway

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. From the Windows 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.

If the path is functioning correctly, replies as in the previous section are displayed.

If you do not receive replies:

•

Check that your computer has the IP address of your gateway 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 gateway 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 netmask) is different from the network address of the remote device.

•

Check that your Internet LED is lit.

Troubleshooting

38

A.

Supplementary Information

This chapter includes:

•

Factory Default Settings

•

Technical Specifications

A

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CG3000DCR Advanced Cable Modem Gateway

Factory Default Settings

You can return the gateway to its factory settings. On the rear panel of the gateway, press and hold the Factory Defaults button for over 7 seconds. The gateway resets, and returns to its factory settings.

Your device returns to the factory configuration settings shown in the following table.

Factory Default Settings

Gateway Login User login URL http://10.1.10.1

User name and password (case sensitive)

MSO, D0nt4g3tme admin, highspeed

Local Network

(LAN)

LAN IP

Subnet mask

DHCP server

DHCP starting IP address

10.1.10.1

255.255.255.0

Enabled

10.1.10.10

Firewall

Internet connection

DHCP Ending IP address 10.1.10.199

Inbound communication from the

Internet

Disabled (except traffic on port 80, the HTTP port)

Outbound communication to the

Internet

Enabled (all)

Source MAC filtering

WAN MAC address

WAN MTU size

Disabled

Use default hardware address

1500

Supplementary Information

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CG3000DCR Advanced Cable Modem Gateway

Technical Specifications

The following table describes the technical specifications for the gateway.

Technical Specifications

Network protocol and standards compatibility

Power adapter

Physical specifications

Environmental

Interface

Data and routing protocols: TCP/IP, DHCP server and client, DNS relay, NAT (many-to-one), TFTP client, VPN pass-through (IPSec,

PPTP)

•

North America (input): 120V, 60 Hz, input

•

All regions (output): 12 V DC @ 1.5A output 15W maximum

•

Dimensions: 6.9 by 4.5 by 1.2 in. (175 by 114 by 30 mm)

•

Weight: 0.68 lb (0.31 kg)

•

Operating temperature: 32° to 140° F (0° to 40° C)

•

Operating humidity: 90% maximum relative humidity, noncondensing

•

Electromagnetic emissions: Meets requirements of: FCC Part 15

Class B.

Local: 10BASE-T, 100/1000BASE-Tx, RJ-45

USB 2.0/1.1 function

802.11n/g/b

Internet: DOCSIS 3.0. Downward compatible with DOCSIS 1.0,

DOCSIS 1.1, and DOCSIS 2.0.

Supplementary Information

41

B.

Notification of Compliance

NETGEAR Wireless Routers, Gateways, APs

B

Regulatory Compliance Information

This section includes user requirements for operating this product in accordance with National laws for usage of radio spectrum and operation of radio devices. Failure of the end-user to comply with the applicable requirements may result in unlawful operation and adverse action against the end-user by the applicable National regulatory authority.

This product's firmware limits operation to only the channels allowed in a particular Region or Country. Therefore, all options described in this user's guide may not be available in your version of the product.

Europe – EU Declaration of Conformity

Products bearing the marking comply with the following EU directives:

•

EMC Directive 2004/108/EC

•

Low Voltage Directive 2006/95/EC

If this product has telecommunications functionality, it also complies with the requirements of the following EU

Directive:

•

R&TTE Directive 1999/5/EC

Compliance with these directives implies conformity to harmonized European standards that are noted in the EU

Declaration of Conformity.

Intended for indoor use only in all EU member states, EFTA states, and Switzerland.

This device may not be used for setting up outdoor radio links in France and in some areas the RF output power may be limited to 10 mW EIRP in the frequency range of 2454 - 2483.5 MHz. For detailed information the end-user should contact the national spectrum authority in France.

FCC Requirements for Operation in the United States

FCC Information to User

This product does not contain any user serviceable components and is to be used with approved antennas only.

Any product changes or modifications will invalidate all applicable regulatory certifications and approvals.

FCC Guidelines for Human Exposure

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body.

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

FCC Declaration of Conformity

We, NETGEAR, Inc., 350 East Plumeria Drive, San Jose, CA 95134, declare under our sole responsibility that the

CG3000DCR Advanced Cable Modem Gateway complies with Part 15 Subpart B of FCC CFR47 Rules. Operation is subject to the following two conditions:

•

This device may not cause harmful interference, and

•

This device must accept any interference received, including interference that may cause undesired operation.

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CG3000DCR Advanced Cable Modem Gateway

FCC Radio Frequency Interference Warnings & Instructions

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following methods:

•

Reorient or relocate the receiving antenna.

•

Increase the separation between the equipment and the receiver.

•

Connect the equipment into an electrical outlet on a circuit different from that which the radio receiver is connected.

•

Consult the dealer or an experienced radio/TV technician for help.

FCC Caution

•

Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.

•

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

•

For product available in the USA market, only channel 1~11 can be operated. Selection of other channels is not possible.

•

This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter.

TV Tuner (on Selected Models)

Note to CATV System Installer: This reminder is provided to call the CATV system installer’s attention to Section

820-93 of the National Electrical Code, which provides guidelines for proper grounding and, in particular, specifies that the Coaxial cable shield be connected to the grounding system of the building as close to the point of cable entry as possible.

Canadian Department of Communications Radio Interference Regulations

This digital apparatus (CG3000DCR Advanced Cable Modem Gateway) does not exceed the Class B limits for radio-noise emissions from digital apparatus as set out in the Radio Interference Regulations of the Canadian

Department of Communications.

This Class [B] digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe [B] est conforme à la norme NMB-003 du Canada

Industry Canada

This device complies with RSS-210 of the Industry Canada Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

IMPORTANT NOTE: Radiation Exposure Statement:

This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Caution:

Ce dispositif est conforme à la norme CNR-210 d'Industrie Canada applicable aux appareils radio exempts de licence.

Son fonctionnement est sujet aux deux conditions suivantes: (1) le dispositif ne doit pas produire de brouillage préjudiciable, et (2) ce dispositif doit accepter tout brouillage reçu, y compris un brouillage susceptible de provoquer un fonctionnement indésirable.

Notification of Compliance

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CG3000DCR Advanced Cable Modem Gateway

NOTE IMPORTANTE: Déclaration d'exposition aux radiations:

Cet équipement est conforme aux limites d'exposition aux rayonnements IC établies pour un environnement non contrôlé. Cet équipement doit être installé et utilisé avec un minimum de 20 cm de distance entre la source de rayonnement et votre corps.

Interference Reduction Table

The table below shows the recommended minimum distance between NETGEAR equipment and household appliances to reduce interference (in feet and meters).

Household Appliance

Microwave ovens

Baby Monitor - Analog

Baby Monitor - Digital

Cordless phone - Analog

Cordless phone - Digital

Bluetooth devices

ZigBee

Recommended Minimum Distance

(in feet and meters)

30 feet / 9 meters

20 feet / 6 meters

40 feet / 12 meters

20 feet / 6 meters

30 feet / 9 meters

20 feet / 6 meters

20 feet / 6 meters

Notification of Compliance

44