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Troubleshooting

6-1

 

Chapter 6 

Troubleshooting

This chapter gives information about troubleshooting your Model DM602 ADSL Modem . After 
each problem description, instructions are provided to help you diagnose and solve the problem.

Basic Functioning

After you turn on power to the modem, the following sequence of events should occur:

1.

When power is first applied, verify that the Power LED

is on.

2.

After approximately 10 seconds, verify that the LAN port LEDs are lit for any local ports that 
are connected.

 

If a port’s LED is lit, a link has been established to the connected device. If a LAN port is 
connected to a 100 Mbps device, verify that the port’s LED is green. If the port is 10 Mbps, the 
LED will be amber.

If any of these conditions does not occur, refer to the appropriate following section.

PWR LED Not On

If the PWR and other LEDs are off when your modem is turned on:

Make sure that the power cord is properly connected to your modem and that the power supply 
adapter is properly connected to a functioning power outlet. 

Check that you are using the 15 V AC power adapter supplied by NETGEAR for this product.

If the error persists, you have a hardware problem and should contact technical support.

DM602.book  Page 1  Friday, October 4, 2002  4:22 PM

Summary of Contents for DM602 - ADSL-Modem - 8 Mbps DSL Modem

Page 1: ...SM DM602 October 2002 NETGEAR Inc 4500 Great America Parkway Santa Clara CA 95054 USA Phone 1 888 NETGEAR Reference Manual for the Model DM602 ADSL Modem DM602 book Page i Friday October 4 2002 4 22 PM ...

Page 2: ...ation This equipment generates 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 tu...

Page 3: ... notes in the operating instructions Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and has been granted the right to test the series for compliance with the regulations Voluntary Control Council for Interference VCCI Statement This equipment is in the second category information equipment to be used in a residential area or an adja...

Page 4: ...iv DM602 book Page iv Friday October 4 2002 4 22 PM ...

Page 5: ...ardware Package Contents 2 1 The Modem s Front Panel 2 3 The Modem s Rear Panel 2 4 Local Network Hardware Requirements 2 4 PC Requirements 2 4 Access Requirement 2 5 Connecting the Modem 2 5 Connecting to Your ADSL Service and Telephone Provider 2 5 ADSL Through a Modular RJ 11 Wall Jack 2 6 ADSL Through Other Wall Jacks 2 6 Connecting the Power Adapter 2 7 Verifying Power 2 7 Connecting to Your ...

Page 6: ...r TCP IP Networking 3 7 Verifying TCP IP Properties for Macintosh Computers 3 8 Verifying the Readiness of Your DSL Internet Account 3 9 Are Login Protocols Used 3 9 Is Your ISP Configuration for a Static IP Address 3 9 Restarting the Computer 3 10 Ready for Configuration 3 10 Chapter 4 Basic Configuration of the Modem Accessing the Web Configuration Manager in the Modem 4 1 Configuring the Modem ...

Page 7: ...ction 7 3 ADSL link 7 3 WAN LED Blinking Yellow 7 3 WAN LED Off 7 3 Obtaining a WAN IP Address 7 4 Troubleshooting PPPoE or PPPoA 7 4 Troubleshooting Internet Browsing 7 5 Restoring the Default Configuration and Password 7 5 Using the Default Reset button 7 5 Appendix A Technical Specifications General Specifications A 1 Glossary Index DM602 book Page vii Friday October 4 2002 4 22 PM ...

Page 8: ...viii Contents DM602 book Page viii Friday October 4 2002 4 22 PM ...

Page 9: ...sked questions and a means for submitting technical questions online Related Publications As you read this document you may be directed to various RFC documents for further information An RFC is a Request For Comment RFC published by the Internet Engineering Task Force IETF an open organization that defines the architecture and operation of the Internet The RFC documents outline and define the sta...

Page 10: ...nd button names Enter Named keys in text are shown enclosed in square brackets The notation Enter is used for the Enter key and the Return key Ctrl C Two or more keys that must be pressed simultaneously are shown in text linked with a plus sign ALL CAPS DOS file and directory names Special Message Formats This guide uses the following formats to highlight special messages Note This format is used ...

Page 11: ...an install and use the modem in minutes Key Features The DM602 modem provides the following features Easy web based setup for installation and management Direct connection to the Internet using the built in ADSL modem USB connection to your computer eliminates the need for installing an Ethernet card Modem or Router Device Mode Modem Device Mode supports configuration of your Internet connection o...

Page 12: ...rface is autosensing and is capable of full duplex or half duplex operation Depending on the country of purchase the DM602 modem incorporates Auto UplinkTM technology also called MDI MDIX The Ethernet port will automatically sense whether the cable plugged into the port should have a normal connection e g connecting to a PC or an uplink connection e g connecting to a router switch or hub That port...

Page 13: ...y Installation and Management You can install configure and operate the Model DM602 ADSL Modem within minutes after connecting it to the network The following features simplify installation and management tasks Animated installation assistant The Resource CD contains an animated installation assistant to guide you through set up Browser based management Browser based configuration allows you to ea...

Page 14: ...Reference Manual for the Model DM602 ADSL Modem 1 4 Introduction DM602 book Page 4 Friday October 4 2002 4 22 PM ...

Page 15: ...ge Contents The product package should contain the following items Figure 2 1 DM602 Package Contents DM602 ADSL Modem Resource CD installation guide support information card warranty registration card Power adapter Category 5 100 Mbps Ethernet cable Phone Cable Micro Filter DSL FILTER DSL HPN PHONE LI N E ADSL Modem DM602 DM602 book Page 1 Friday October 4 2002 4 22 PM ...

Page 16: ...cable Microfilters quantity and type vary by region Model DM602 Resource CD including This guide Application Notes DM602 ADSL Modem Installation Guide Warranty Card Support Information Card If any of the parts are incorrect missing or damaged contact your NETGEAR dealer Keep the carton including the original packing materials in case you need to return the modem for repair DM602 book Page 2 Friday...

Page 17: ...Yellow Off The ADSL port has linked with the service provider Data is being transmitted or received over the ADSL port The ADSL port is attempting to train with the service provider The ADSL port is not making contact with the service provider USB On Off Data is being transmitted or received No link is detected on this port Ethernet On Green Blink Green On Yellow Blink Yellow Off The Local port ha...

Page 18: ...al PC Factory Default Reset push button ADSL WAN port for connecting the modem to the ADSL service provider Local Network Hardware Requirements The Model DM602 ADSL Modem is intended for use with computers that connect by twisted pair Ethernet or USB cables PC Requirements To install and run the DM602 modem with your computer the computer must have an installed Ethernet Network Interface Card NIC ...

Page 19: ...onnect your Ethernet or USB cable from the computer to the modem see page 2 8 Connect the line from your ADSL service provider to the ADSL port of the modem see page 2 5 Connect the power adapter see page 2 7 A typical installation is shown in Figure 2 4 below Figure 2 4 Typical installation Connecting to Your ADSL Service and Telephone Provider The ADSL and telephone connections may vary by regio...

Page 20: ...o the wall jack 2 Connect the DSL jack of the microfilter to the ADSL port of your modem using the telephone cable provided 3 Connect the PHONE side of the microfilter to your telephone using your existing telephone cable If you have additional telephones you will need to purchase additional microfilters and connect them between the telephones and the wall jack A microfilter is required for each t...

Page 21: ...the modem complete the following steps to verify that power is correctly applied 1 When power is first applied verify that the Power LED comes on All LEDs will be briefly tested 2 After approximately 10 seconds verify that the local Ethernet or USB port LED is lit for the port that is connected to your computer 3 If a port s LED is lit a link has been established to the connected device If a local...

Page 22: ...ate the Category 5 Ethernet cable which came with your modem 2 Connect your computer to the modem using the Ethernet cable which came with you modem USB To connect your computer to the modem via USB involves installing the USB driver then the Ethernet driver Note The USB connection option is only available for Windows PCs Also Windows 95 does not support USB without special operating system upgrad...

Page 23: ...setup exe utility d Follow the setup wizard prompts to install the USB driver and click Finish when done 2 Turn on the modem and connect your computer to the modem with the USB cable The found new hardware Windows installation wizard will prompt you for the drivers a Follow the Windows prompts to complete the installation of the modem b Browse to the CD and install the USB driver by clicking throu...

Page 24: ...em 2 10 Setting Up the Hardware Ready to Configure Your Modem You are now ready to assure your computer is prepared for connecting to and configuring your modem as described in the following chapter DM602 book Page 10 Friday October 4 2002 4 22 PM ...

Page 25: ...need for networking with TCP IP Windows 95 or later includes the software components for establishing a TCP IP network Windows 3 1 does not include a TCP IP component You need to purchase a third party TCP IP application package such as NetManage Chameleon Macintosh Operating System 7 or later includes the software components for establishing a TCP IP network All versions of UNIX or Linux include ...

Page 26: ...teway address the modem 192 168 0 1 Configuring Windows 95 98 and ME for TCP IP Networking As part of the PC preparation process if TCP IP is not already installed you need to manually install and configure TCP IP on your computer Before starting locate your Windows CD you may need to insert it during the TCP IP installation process Install or Verify Windows Networking Components To install or ver...

Page 27: ... the manufacturer and model of your Ethernet adapter and then click OK If you need TCP IP a Click the Add button b Select Protocol and then click Add c Select Microsoft d Select TCP IP and then click OK If you need Client for Microsoft Networks Note It is not necessary to remove any other network components shown in the Network window in order to install the adapter TCP IP or Client for Microsoft ...

Page 28: ... 2 On the PC open the Network control panel refer to the previous section and select the Configuration tab 3 From the components list select TCP IP your Ethernet adapter and click Properties 4 In the IP Address tab select Obtain an IP address automatically 5 Select the Gateway tab 6 If any gateways are shown remove them 7 Click OK 8 Restart the PC Selecting Windows Internet Access Method To select...

Page 29: ...68 0 1 Configuring Windows NT or 2000 for TCP IP Networking As part of the PC preparation process you need to assure TCP IP is installed and configured on the PC Before starting locate your Windows CD which you may need to insert during the TCP IP installation process Install or Verify Windows Networking Components To install or verify the necessary components for IP networking 1 On the Windows ta...

Page 30: ...l Your IP Configuration information will be listed and should match the values below if you are using the default TCP IP settings that NETGEAR recommends IP addresses 192 168 0 2 through 192 168 0 253 The subnet mask is 255 255 255 0 The default gateway is 192 168 0 1 4 Type exit Configuring A Macintosh for TCP IP Networking Beginning with Macintosh Operating System 7 TCP IP is already installed o...

Page 31: ...er You can leave the DHCP Client ID box empty 4 Close the TCP IP Control Panel 5 Repeat this for each Macintosh on your network Configuring MacOS X for TCP IP Networking 1 From the Apple menu choose System Preferences then Network 2 If not already selected select Built in Ethernet in the Configure list 3 If not already selected Select Using DHCP in the TCP IP tab 4 Click Save DM602 book Page 7 Fri...

Page 32: ...s then TCP IP The panel is updated to show your settings which should match the values below if you are using the default TCP IP settings that NETGEAR recommends IP addresses 192 168 0 2 through 192 168 0 253 The subnet mask is 255 255 255 0 The default gateway is 192 168 0 1 If you do not see these values you may need to restart your Macintosh or you may need to switch the Configure setting to a ...

Page 33: ...used you can configure your modem to operate in router mode After the modem is configured it will perform the login task when needed and you will no longer need to run the login program from your computer It is not necessary to uninstall the login program If you prefer to run the software on your computer which performs the login you can do so by configuring the modem to operate in Modem Device Mo...

Page 34: ...et to operate in Modem Device Mode you will need to reconfigure your computer with the TCP IP configuration you recorded from your ISP Restarting the Computer Once you ve set up your computer to work with the modem you must reset the devices to be able to communicate correctly 1 Pull the modem s power adapter out of the socket on the back then put it back in to reset it and wait about 10 seconds 2...

Page 35: ... 4 0 or above Free browser programs are readily available for Windows Macintosh or UNIX Linux To configure the modem for Internet access using your browser 1 Turn on the modem and wait at least ten seconds for initialization to complete If you normally use a login program such as Enternet or WinPOET to access the Internet do not launch that program 2 Configure your computer with the static IP addr...

Page 36: ...em s built in Web Configuration Manager screen below to your browser Figure 4 2 Browser based Configuration via Basic Router Settings menu 5 Choose the configuration procedure below which matches the configuration settings of your ISP ADSL account Note This User Name and Password are for the modem only They are not the same as any user name and password your ISP may require to access the Internet ...

Page 37: ...y your ISP These fields are case sensitive If you wish to change the login time out enter a new value in minutes You will no longer need to launch the ISP s login program on your computer in order to access the Internet When you start an Internet application your modem will automatically log you in 2 Next enter the Idle Time out value in minutes Note PPPoE and PPPoA will authenticate with the netw...

Page 38: ...ternet when your computer requires access It is not necessary to run a dialer or login application such as Dial Up Networking or Enternet to connect log in or disconnect These functions are performed automatically by the modem Configuring the Modem in Modem Device Mode for a Fixed Static TCP IP Account If your Internet service account uses Fixed TCP IP assignment you will use the modem in Modem De...

Page 39: ... Modem Login window 5 Type admin in the User Name box password in the Password box and then click OK 6 When the Basic Settings screen appears see Figure 4 2 click the Advanced Device Mode link to bring up the Device Type selection screen below see Figure 4 5 Figure 4 5 Device Type selection window DM602 book Page 5 Friday October 4 2002 4 22 PM ...

Page 40: ...hod is LLC based If your service provider does not indicate which one is used use LLC BASED 9 Click on Apply Completing the Configuration Your modem is now configured to provide Internet access for your computer The following chapters describe how to configure the Advanced features of your modem and how to troubleshoot problems that may occur Note When the DM602 modem is set to operate in Modem De...

Page 41: ...Advanced heading in the Main Menu of the browser interface Router Device Mode Status The Router Status menu provides a limited amount of status information From the Main Menu of the browser interface click on Router or Modem Status depending on what mode the device is in Then the System Status screen shown in Figure 5 1 will appear Figure 5 1 Router Mode Status screen DM602 book Page 1 Friday Octo...

Page 42: ...the ADSL modem section of the modem ADSL Firmware Version This field displays the ADSL chipset firmware version Modem Status This field displays the state of the ADSL connection to your service provider either Connecting or Connected Connect Mode This field displays the protocol used to connect to your service provider When the ADSL link comes up the connection will be either Fast or Interleaved d...

Page 43: ...outer Statistics Fields Field Description Port The statistics for the ADSL WAN Internet and LAN local ports Status The link status of the port TxPkts The number of packets transmitted on this port since reset or manual clear RxPkts The number of packets received on this port since reset or manual clear Poll Interval Specifies the intervals at which the statistics are updated in this window Click o...

Page 44: ...M602 modem goes through the following steps to bring up a PPPoE or PPPoA connection 1 The WAN LED indicates whether the ADSL physical layer can connect to the telephone company s ADSL equipment called a DSL Access Multiplexor DSLAM The WAN LED will be solid green when this connection is made 2 Connecting to server PPP LCP negotiation and Authentication indicate whether the modem is able to reach t...

Page 45: ... Fields Field Description Firmware Version This field displays the modem firmware version LAN Port These IP parameters apply to the Local Area Network LAN of the modem MAC Address This field displays the Ethernet MAC address being used by the LAN port of the modem IP Address This field displays the IP address being used by the ADSL WAN port of the modem If no address is shown the modem cannot conn...

Page 46: ...ervice provider When the ADSL link comes up the connection will be either Fast or Interleaved depending on the way the telephone company has configured its equipment Down Stream This field displays the connection rate from the service provider to the modem in bits per second Up Stream This field displays the connection rate from the modem to the service provider in bits per second VPI This field d...

Page 47: ... private address range for use in private networks and should be suitable in most applications If your network has a requirement to use a different IP addressing scheme you can make those changes in this menu TxPkts The number of packets transmitted on this port since reset or manual clear RxPkts The number of packets received on this port since reset or manual clear Poll Interval Specifies the in...

Page 48: ...the password first enter the old password and then enter the new password twice Click Apply Firmware Upgrade The software of the DM602 modem is stored in FLASH memory and can be upgraded as new software is released by NETGEAR Upgrade files can be downloaded from Netgear s website If the upgrade file is compressed ZIP file you must first extract the binary BIN file before sending it to the modem Th...

Page 49: ...tically restart The upgrade process will typically take about one minute In some cases you may need to reconfigure the modem after upgrading DMZ Incoming traffic from the Internet is normally discarded by the modem unless the traffic is a response to one of your local computers or a service that you have configured in the Port Forwarding menu Instead of discarding this traffic you can have it forw...

Page 50: ...cure You can change the operation of the modem from Modem Device Mode to Router Device Mode In Modem Device Mode the modem operates like a DSL modem passing all the Internet communications directly to your computer where you must then configure your settings and logon settings as needed Note For security you should avoid using the DMZ Server feature When a computer is designated as the Default DMZ...

Page 51: ...ice Mode menu shown in Figure 5 10 allows the configuration of modem in router mode or modem mode Figure 5 10 Device Mode menu To change the mode of the modem follow these steps 1 Select the Device Type from the list 2 Click Apply The modem will reconfigure itself accordingly Note If you change the modem from Router Mode to Modem Mode your computer must configured with a static IP address of 192 1...

Page 52: ...Reference Manual for the Model DM602 ADSL Modem 5 12 Advanced Configuration of the Modem DM602 book Page 12 Friday October 4 2002 4 22 PM ...

Page 53: ...it a link has been established to the connected device If a LAN port is connected to a 100 Mbps device verify that the port s LED is green If the port is 10 Mbps the LED will be amber If any of these conditions does not occur refer to the appropriate following section PWR LED Not On If the PWR and other LEDs are off when your modem is turned on Make sure that the power cord is properly connected t...

Page 54: ...ter Device Mode If it gets reset to Modem Device Mode your PC will need to be configured with a static IP address of 192 168 0 2 a Subnet Mask of 255 255 255 0 and a Gateway Address of 192 168 0 1 to be able to connect to the modem s built in configuration pages Otherwise you can use the reset button at the back of the modem to put it back in Router Device mode and connect from a computer set to a...

Page 55: ...re connected correctly you should be able to connect all your telephones If disconnecting telephones does not result in a green WAN LED there may be a problem with your wiring If the telephone company has tested the ADSL signal at your Network Interface Device NID then you may have poor quality wiring in your house WAN LED Off If the WAN LED is off disconnect all telephones on the line If this sol...

Page 56: ... the problem may be one of the following Your ISP may require a login program Ask your ISP whether they require PPP over Ethernet PPPoE or PPP over ATM PPPOA login If you have selected a login program you may have incorrectly set the Service Name User Name and Password See Troubleshooting PPPoE or PPPoA below Your ISP may check for your PC s host name Assign the PC Host Name of your ISP account to...

Page 57: ...nfigure your PC manually with DNS addresses as explained in your operating system documentation Your PC may not have the modem configured as its TCP IP gateway If your PC obtains its information from the modem by DHCP reboot the PC and verify the gateway address as described in Verifying TCP IP Properties Windows on page 3 5 Restoring the Default Configuration and Password This section explains ho...

Page 58: ...Reference Manual for the Model DM602 ADSL Modem 6 6 Troubleshooting DM602 book Page 6 Friday October 4 2002 4 22 PM ...

Page 59: ...lity Data and Routing Protocols TCP IP DHCP server and DHCP relay RFC 1483 2684 Bridged Ethernet Encapsulation RFC 2516 PPP over Ethernet PPPoE RFC 2364 PPP over ATM PPPoA Power Adapter North America 120V 60 Hz input United Kingdom Australia 240V 50 Hz input Europe 230V 50 Hz input Japan 100V 50 60 Hz input All regions output 15 V AC 1 0 A output 30W maximum DM602 book Page 1 Friday October 4 2002...

Page 60: ... Specifications Operating temperature 0 to 40 C Operating humidity 90 maximum relative humidity noncondensing Electromagnetic Emissions Meets requirements of FCC Part 15 Class B VCCI Class B EN 55 022 CISPR 22 Class B Interface Specifications LAN 10BASE T or 100BASE Tx RJ 45 USB 1 1 WAN ADSL RJ 11 pins 2 and 3 T1 413 G DMT G Lite ITU Annex A DM602 book Page 2 Friday October 4 2002 4 22 PM ...

Page 61: ...es on the Internet Domain names are of the form of a registered entity name plus one of a number of predefined top level suffixes such as com edu uk etc For example in the address mail NETGEAR com mail is a server name and NETGEAR com is the domain Domain Name Server A Domain Name Server DNS resolves descriptive names of network resources such as www NETGEAR com to numeric IP addresses DSLAM DSL A...

Page 62: ...twork devices such as storage and printers Although many technologies exist to implement a LAN Ethernet is the most common for connecting personal computers MAC address Media Access Control address A unique 48 bit hardware address assigned to every Ethernet node Usually written in the form 01 23 45 67 89 ab MSB See Most Significant Bit or Most Significant Byte MRU See Maximum Receive Unit Maximum ...

Page 63: ...ternet over an always on connection by simulating a dial up connection PPTP Point to Point Tunneling Protocol A method for establishing a virtual private network VPN by embedding Microsoft s network protocol into Internet packets PSTN Public Switched Telephone Network Point to Point Protocol PPP A protocol allowing a computer using TCP IP to connect directly to the Internet RFC Request For Comment...

Page 64: ...irtual Channel through an ATM network Used by ATM switching equipment to route data through the network VPN Virtual Private Network A method for securely transporting data between two private networks by using a public network such as the Internet as a connection WAN See wide area network Wide Area Network WAN A long distance link used to extend or connect remotely located local area networks The ...

Page 65: ...D 7 DMZ 10 11 DNS server 4 DSLAM 4 E EnterNet 9 F features 1 Firmware Version ADSL 2 6 flash memory for firmware upgrade 2 front panel 3 I IETF ix installation 3 Internet account address information 9 establishing 9 IP addresses auto generated 2 IP networking for Macintosh 6 for Windows 2 5 L LAN IP Setup Menu 7 LEDs 3 description 3 LLC BASED multiplexing method 6 M Macintosh DHCP Client ID 7 MDI ...

Page 66: ...publications related ix R rear panel 4 requirements access device 5 hardware 4 reset button clearing config 5 S Secondary DNS Server 4 T TCP IP properties verifying for Macintosh 8 verifying for Windows 5 6 technical support ix troubleshooting 1 typographical conventions x V VC BASED multiplexing method 6 VPI VCI 2 6 configuration 6 W Windows configuring for IP routing 2 5 winipcfg utility 5 WinPO...

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