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SMC Networks SMCD3GNV User Manual

Comcast wireless cable modem gateway
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Comcast Wireless Cable Modem Gateway
FastFind Links
Getting to Know the Gateway
SMCD3GNV User Manual
Installing the Gateway
Preconfiguration Guidelines
Configuring the Gateway
Configuring the Gateway's mso Interface

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Summary of Contents for SMC Networks SMCD3GNV

  • Page 1 Comcast Wireless Cable Modem Gateway FastFind Links Getting to Know the Gateway SMCD3GNV User Manual Installing the Gateway Preconfiguration Guidelines Configuring the Gateway Configuring the Gateway’s mso Interface...
  • Page 2 Copyright © 2012 SMC Networks All Rights Reserved Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable. However, no responsibility is assumed by SMC for its use, or for any infringements of patents or other rights of third parties which may result from its use.

  • Page 3: Table Of Contents

    Disabling Proxy Settings in Internet Explorer ............34 Disabling Proxy Settings in Firefox ..............34 Disabling Proxy Settings in Safari ............... 35 Disabling Firewall and Security Software ..............35 Confirming the Gateway’s Online Status ..............35 SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 4 Restoring or Rebooting the Gateway ............98 Changing the Login Password ............... 99 5 Configuring the Gateway’s mso Interface ............100 Accessing the Gateway’s Web Management ............101 Understanding the Web Management Interface Menus .......... 102 SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 5 Testing Connectivity to Destination and IP Addresses ........ 175 Restoring or Rebooting the Gateway ............177 Changing the Login Password ..............178 6 Troubleshooting Procedures ................179 Basic Troubleshooting Procedures ................. 180 Advanced Troubleshooting Procedures ..............182 SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 6 Connecting to America Online Behind the Gateway ......... 204 Connecting to XBox Live, PSP, and Nintendo WFC ......... 204 Appendix A - Specifications ................205 Appendix B - Compliances ................. 209 Index ........................211 SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 7: Preface

    Preface The SMCD3GNV Wireless Cable Modem Gateway is the ideal all-in-one wired and wireless solution for the home or business environment. SMC is proud to provide you with a powerful, yet simple communication device for connecting your local-area network (LAN) to the Internet.

  • Page 8: Key Features

    Effortless plug-and-play installation.  Intuitive graphical user interface (GUI) configuration, regardless of operating system.  Comprehensive front panel LEDs for network status and troubleshooting.  Compatible with all popular Internet applications.  viii SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 9: Document Organization

    Electric Shock Hazard This symbol warns users of electric shock hazard. Failure to take appropriate precautions such as not opening or touching hazardous areas of the equipment could result in injury or death. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 10: Typographic Conventions

    [ ] square Indicates optional values. brackets { } braces Indicates required or expected values. | vertical bar Indicates that you have a choice between two or more options or arguments. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 11: Getting To Know The Gateway

    1 Getting to Know the Gateway Before you install your SMCD3GNV Wireless Cable Modem Gateway, check the package contents and become familiar with the Gateway’s front and back panels. The topics covered in this chapter are: Unpacking Package Contents (page 12) ...

  • Page 12: Unpacking Package Contents

    Getting to Know the Gateway Unpacking Package Contents Unpack the items in your SMCD3GNV Wireless Cables Modem Gateway contents and confirm that no items are missing or damaged. Your package should include: One SMCD3GNV Wireless Cable Modem Gateway  One 2600 mAh battery ...

  • Page 13: Front Panel

    Getting to Know the Gateway Front Panel The front panel of your SMCD3GNV Wireless Cable Modem Gateway contains a set of light- emitting diode (LED) indicators. These LEDs show the status of the Gateway and simplify troubleshooting. Figure 1 shows the front panel of the SMCD3GNV Wireless Cable Modem Gateway. Table 1 describes the front panel LEDs.
  • Page 14 Battery White Blinking = Gateway battery power is low. Please apply AC power as soon as possible. ON = Gateway is operating from battery power. OFF = Gateway is operating from AC power. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 15: Rear Panel

    Getting to Know the Gateway Rear Panel The rear panel of your SMCD3GNV Wireless Cable Modem Gateway contains a reset button and the ports for attaching the supplied power adapter and making additional connections. Figure 2 shows the rear panel components and Table 2 describes their meanings.

  • Page 16: Top Panel

    Indicate 10/100Mbps in use Top Panel The top panel of your SMCD3GNV Wireless Cable Modem Gateway has a WPS button for configuring wireless security automatically. Figure 3 shows the WPS button. Figure 3. Top View of the SMCD3GNV Wireless Cable Modem Gateway...

  • Page 17: Using The Reset Button

    To perform a software reset, press the reset button for at least 10 seconds. – To perform a factory default reset, press the reset button for at least 15 seconds. 3. Release the reset button. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 18: Installing The Gateway

    2 Installing the Gateway This chapter describes how to install your SMCD3GNV Wireless Cable Modem Gateway. The topics covered in this chapter are: Finding a Suitable Location (page 19)  Installing a Battery (page 20)  Connecting to the LAN (page 21) ...

  • Page 19: Finding A Suitable Location

    Installing the Gateway Finding a Suitable Location Your SMCD3GNV Wireless Cable Modem Gateway can be installed in any location with access to the cable network. All of the cables connect to the rear panel of the Gateway for better organization and utility. The LED indicators on the front panel are easily visible to provide you with information about network activity and status.

  • Page 20: Installing A Battery

    Figure 5. Installing the Battery 4. Close the battery compartment. Note: Using the Battery menu in the Gateway’s Web interface, you can view status information about the battery (see “Viewing Battery Settings” on page 57). SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 21: Connecting To The Lan

    2. Connect the other end of the cable to your computer’s network-interface card (NIC) or to another network device (see Figure 7). Figure 7. Connecting the Gateway to the a Laptop or Desktop Computer SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 22: Connecting The Wan

    5. If the modem was not installed by your cable provider (ISP) or is replacing another cable modem, contact your cable operator to register the SMCD3GNV. If the modem is not registered with your cable operator, it will be unable to connect to the cable network system.

  • Page 23: Powering On The Gateway

    LEDs show the Gateway’s status (see Table 1 on page 14). WARNING: Only use the power cord supplied with the Gateway. Using a different power cord can damage the Gateway and void the warranty. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 24: Preconfiguration Guidelines

    3 Preconfiguration Guidelines After you install your SMCD3GNV Wireless Cable Modem Gateway, use the information in this chapter to configure the TCP/IP settings on the computer that will be used to configure the Gateway. This chapter also covers other preconfiguration guidelines you should review before configuring the Gateway.

  • Page 25: Configuring Your Computer For Tcp/Ip

    3. Double-click the Local Area Connection icon for the Ethernet adapter connected to the Gateway. The Local Area Connection Status dialog box appears (see Figure 8). Figure 8. Local Area Connection Status Window SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 26: Configuring Microsoft Windows Xp

    Local Area Connection Status dialog box appears. 4. In the Local Area Connection Status dialog box, click the Properties button (see Figure 9). The Local Area Connection Properties dialog box appears. Figure 9. Local Area Connection Status Window SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 27: Configuring Microsoft Windows Vista

    5. In the Local Area Connection Properties dialog box, verify that Internet Protocol (TCP/IPv4) is checked. Then select Internet Protocol (TCP/IPv4) and click the Properties button (see Figure 10). The Internet Protocol Version 4 Properties dialog box appears. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 28 Figure 10. Local Area Connection Properties Window 6. In the Internet Protocol Version 4 Properties dialog box, click Obtain an IP address automatically to configure your computer for DHCP (see Figure 11). Figure 11. Internet Protocol Properties Window SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 29 Preconfiguration Guidelines 7. Click the OK button to save your changes and close the dialog box. 8. Click the OK button again to save your changes. Figure 12. Local Area Connection Status Window SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 30: Configuring Microsoft Windows 7

    Figure 14. Example of Network Connections List 2. Right-click the Local Area Connection icon and click Properties. 3. In the Networking tab, click either Internet Protocol Version 4 (TCP/IPv4) or Internet Protocol Version 6 (TCP/IPv6), and then click Properties. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 31 Preconfiguration Guidelines Figure 15. Local Area Network Connection Properties Dialog Box 4. In the properties dialog box, click Obtain an IP address automatically to configure your computer for DHCP (see Figure 16). SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 32 Preconfiguration Guidelines Figure 16. Properties Window 5. Click the OK button to save your changes and close the dialog box. 6. Click the OK button again to save your changes. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 33: Configuring An Apple Macintosh Computer

    1. Pull down the Apple Menu, click System Preferences, and select Network. 2. Verify that NIC connected to the SMCD3GNV is selected in the Show field. 3. In the Configure field on the TCP/IP tab, select Using DHCP (see Figure 17).

  • Page 34: Disabling Proxy Settings

    3. Click the Advanced tab. 4. In the Advanced tab, click the Network tab. 5. Click the Settings button. 6. Click Direct connection to the Internet. 7. Click the OK button to confirm this change. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 35: Disabling Proxy Settings In Safari

    Be sure there is an Ethernet cable connecting your computer to the Gateway. Then confirm that the LEDs for the Gateway port connected to your computer are blinking. If the LEDs are OFF, the connection between your computer and Gateway is not working properly. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 36: Configuring The Gateway

    4 Configuring the Gateway After configuring your computer for TCP/IP and following the preconfiguration guidelines in Chapter 3, use that computer’s Web browser to configure your SMCD3GNV Gateway. This chapter describes how to use your computer’s Web browser to configure the Gateway.

  • Page 37: Accessing The Gateway's Web Management

    Gateway and its ports. To display the SMCD3GNV Wireless Cable Modem Gateway’s Web-based management screens, use the following procedure.

  • Page 38: Understanding The Web Management Interface Menus

     Status of the Gateway’s wireless connection  Firewall security level  A control panel at the bottom of the menu provides links for accessing comcast.net, help, security, smartzone, and customer central. Username SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 39 Some menus in the menu bar have submenus associated with them. If you click a menu that has submenus, the submenus appear below the menu. For example, if you click the Connection menu, the submenus in Figure 20 appear. Figure 20. Example of Connection Submenus SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 40: Web Management Interface Menus

    View the status and MAC address of the Gateway’s Wi-Fi port. • Wizard Use a wizard to set up your home network. • Connected Devices Displays the Computer submenu for adding online computers and viewing computers that are offline. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 41 Tests connectivity to a destination or IP address. Troubleshooting > Restore/Reboot Gateway Reset the Gateway, reset the Wi-Fi router only, or restore factory settings. Troubleshooting > Change Password Change the password used to log in to the Gateway’s Web interface. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 42: Viewing Information About Your Network And Connected Devices

    Gateway automatically detects using DHCP (see page 64). Recent Network Displays alert and warning information. A drop-down list lets you view this information for today, yesterday, this Updates week, or this month. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 43: Viewing Information About Your Network And Connections

    View Comcast network settings and initialization procedures, including cable modem,  downstream, and upstream information. See page 46. Configure IPv4 or IPv6 settings for the Gateway. See page 47.  View and edit basic and advanced wireless settings. See page 49.  SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 44: Viewing The Gateway's Connection Status

    To display the Status menu, click Connection in the menu bar, and then click the Status submenu. Figure 22 shows an example of the Status menu and Table 6 describes the menu. Figure 22. Example of the Status Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 45 Lets you view information about the Comcast network. A VIEW button opens the Comcast Network menu for viewing the initialization procedures, including cable modem, downstream, and upstream information (see “Viewing Comcast Network Information” on page 46). SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 46: Viewing Comcast Network Information

    To display the Comcast Network menu, click Gateway in the menu bar, and then click the Connection and Comcast Network submenus. Figure 23 shows an example of the Comcast Network menu. Figure 23. Example of Comcast Network Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 47: Viewing And Editing Your Local Ip Configuration

    To display the Local IP Configuration menu, click Connection in the menu bar, and then click the Local IP Network submenu. Figure 24 shows an example of the Local IP Configuration menu and Table 7 describes the menu. Figure 24. Example of Local IP Configuration Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 48 = allows communication among nodes within a site or organization. • SAVE SETTINGS button After configuring your IPv6 settings, click this button to save them. RESTORE DEFAULT SETTINGS Resets the Gateway to the factory default IPv6 settings. FOR IPV6 button SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 49: Viewing And Editing Wireless Configuration

    To display the Wireless menu, click Gateway in the menu bar, and then click the Connection and WiFi submenus. Figure 25 shows an example of the Local IP Configuration menu and Table 8 describes the menu. Figure 25. Example of Wireless Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 50 Mixed Mode = provides backward compatibility with IEEE 802.11n/a/g/b devices. (default) • Green Field = used for pure network of 802.11n access points and clients, taking full • advantage of the high-throughput capabilities of the 11n multiple-input multiple-output (MIMO) architecture. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 51 WEP keys. WPS Configured A read-only field that whether WPS has been configured. AP PIN A read-only field that shows the personal identification number (PIN) for the access point. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 52 Enter Wireless Client’s PIN If you clicked PIN Number, enter the PIN in this field. Pair with my WiFI Client Click this button to pair (connect) the Gateway’s Wi-Fi settings with your Wi-Fi client. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 53: Configuring Firewall Settings

    Clicking this option displays the custom security settings in Figure 27. For more information, see Table 10. SAVE SETTINGS button After configuring your firewall settings, click this button to save them. RESTORE DEFAULT SETTINGS Resets the Gateway to the factory default firewall settings. button SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 54 113. Essentially, the remote server is asking your system to identify itself and you. This means that port 113 is often probed by attackers as a source of your personal information. Disable entire firewall Disables all of the Gateway’s firewall settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 55: Viewing System Software Settings

    To display the Software menu, click Gateway in the menu bar, and then click the Software submenu. Figure 28 shows an example of the Software menu. Figure 28. Example of the Software Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 56: Configuring System Hardware

    To display the System Hardware menu, click Gateway in the menu bar, and then click the Hardware and System Hardware submenus. Figure 29 shows an example of the System Hardware menu. Figure 29. Example of the System Hardware Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 57: Viewing Battery Settings

    To display the Battery menu, click Gateway in the menu bar, and then click the Hardware and Battery submenus. Figure 30 shows an example of the Battery menu. Figure 30. Example of the Battery Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 58: Viewing Lan Ethernet Settings

    To display the LAN Ethernet menu, click Gateway in the menu bar, and then click the Hardware and LAN submenus. Figure 31 shows an example of the LAN Ethernet menu. Figure 31. Example of the LAN Ethernet Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 59: Viewing Wi-Fi Settings

    To display the WiFi menu, click Gateway in the menu bar, and then click the Hardware and WiFi submenus. Figure 32 shows an example of the WiFi menu. Figure 32. Example of the WiFi Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 60: Configuring Your Home Network

    Wizard submenu. Figure 33 shows an example of the first page of the Home Network Wizard and Table 11 describes the page. Figure 33. Example of the First Page of the Home Network Wizard SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 61 For security purposes, every typed character appears as a dot (). NEXT PAGE button Click this button to display the second page of the Home Network Wizard (see Figure 34 and Table 12). SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 62 Configuring the Gateway Figure 34. Example of the Second Page of the Home Network Wizard SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 63 IP address of the Remote Authentication Dial In User Service (RADIUS) server. Radius Server Port Port number that RADIUS uses for authentication. Default is 1812. FINISH button Click this button to complete the Home Network Wizard. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 64: Working With Connected Devices

    Disconnect online and offline computers from the wireless network.  To display the Computers menu, click Connected Devices in the menu bar. Figure 35 shows an example of the Computers menu. Figure 35. Example of the Computers Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 65: Manually Adding Computers With Static Ip Addresses To The Wireless

    Computer message appears, click OK to delete the computer or CANCEL to retain it. If you clicked OK, the computer is removed from the Computers menu. Figure 36. Example of the Add Computer Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 66 Optional comments about the computer. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Computer menu. Figure 37. Example of the Edit Computer Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 67 IP address. Comments Optional comments about the computer. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Edit Computer menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 68: Configuring Parental Controls

    Using the Managed Sites menu, you can block access to certain Web sites from local computers. To display the Managed Sites menu, click Parental Control in the menu bar. Figure 38 shows an example of the Managed Sites menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 69 18. To delete a blocked site, click the X next to the site. When the Delete URL Block Rule message appears, click OK to delete the blocked URL or CANCEL to retain it. If you clicked OK, the URL is removed from the Blocked Sites area on the Managed Sites menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 70 Configuring the Gateway Figure 39. Add Blocked Domain Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 71 URL. These checkboxes are not available if you selected Yes for Always Block? SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Domain menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 72 Block Rule message appears, click OK to delete the blocked keyword or CANCEL to retain it. If you clicked OK, the keyword is removed from the Blocked Keywords area on the Managed Keywords menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 73 Configuring the Gateway Figure 40. Add Blocked Keyword Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 74 These checkboxes are not available if you selected Yes for Always Block? SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Keyword menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 75: Blocking Services

    31. Click SAVE (or click CANCEL to discard your settings). If you clicked SAVE, the blocked service appears below Blocked Services on the Managed Services menu. 32. To block additional services, repeat steps 3 through 5. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 76 Rule message appears, click OK to delete the blocked URL or CANCEL to retain it. If you clicked OK, the service is removed from the Blocked Services area on the Managed Services menu. Figure 42. Add Blocked Service Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 77 These checkboxes are not available if you selected Yes for Always Block? SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Domain menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 78: Managing Devices And Access Types

    By default, all managed devices are disabled. To enable them, click Enabled next to Enable Managed Devices. Enabling or Disabling Access Types By default, all access types are blocked. To unblock them, click Allow All next to Access Type. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 79 Rule message appears, click OK to delete the blocked device or CANCEL to retain it. If you clicked OK, the device is removed from the Blocked Devices area on the Managed Devices menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 80 Configuring the Gateway Figure 44. Add Blocked Device Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 81 These checkboxes are not available if you selected Yes for Always Block? SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Device menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 82: Generating Reports

    Reports submenu. Figure 45 shows an example of the menu. Note: You can use the Logs menu to apply log filters to reports. For more information. See page 94. Figure 45. Example of Reports Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 83 After defining a report filter, use the following steps under All Reports to print or download the report: 3. To print the report with the filter applied, click PRINT. 4. To download the report with the filter applied, click DOWNLOAD. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 84: Using Advanced Features

    You configure the Gateway’s port forwarding feature using the Port Forwarding menu. To display this menu, click Advanced in the menu bar, and then click the Port Forwarding submenu in the menu bar. Figure 46 shows an example of the menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 85 Forwarding Rule message appears, click OK to delete the port forwarding rule or CANCEL to retain it. If you clicked OK, the rule is removed from the Port Forwarding area on the Port Forwarding menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 86 Check this box to enable the private port range specified in Private Port(s). SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Device menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 87: Enabling Or Disabling Port Triggering

    B. To display the Port Triggering menu, click Advanced in the menu bar, and then click the Port Triggering submenu in the menu bar. Figure 48 shows an example of the menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 88 Rule message appears, click OK to delete the port triggering rule or CANCEL to retain it. If you clicked OK, the rule is removed from the Port Triggering area on the Port Triggering menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 89 SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Device menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 90 2. Next to Enable Port Triggering, click Enabled. The ADD PORT TRIGGER button turns green, and all port triggering rules that have been defined become available, along with the EDIT and delete buttons. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 91: Enabling Or Disabling Port Blocking

    3. Under Speed, select the fixed speed that the port will use. 4. To disable the port, check the checkbox in the Disable Port column. 5. Click the SAVE button. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 92: Discovering Devices

    To display the Device Discovery menu, click Advanced in the menu bar, and then click the Device Discovery submenu in the menu bar. Figure 51 shows an example of the menu and Table 21 describes it. Figure 51. Example of Device Discovery Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 93 Enabled = enables support for zero configuration. • Disabled = disables support for zero-configuration (default) • SAVE button Click this button to save your settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 94: Troubleshooting The Gateway

    To display the Logs menu, click Troubleshooting in the menu bar, and then click the Logs submenu in the menu bar. Figure 52 shows an example of the menu. Figure 52. Example of the Logs Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 95 After defining a log filter, use the following steps under System Logs to print or download the log: 1. To print the log with the filter applied, click PRINT. 2. To download the log with the filter applied, click DOWNLOAD. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 96: Testing Connectivity To Destination And Ip Addresses

    Troubleshooting in the menu bar, and then click the Diagnostic Tools submenu in the menu bar. Figure 53 shows an example of the menu. Figure 53. Example of the Network Diagnostic Tools Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 97 If the test is successful, you know that the IP address you are having difficulty reaching is alive and physically reachable. If there are routers between the Gateway and the IP address you are having difficulty reaching, the problem might be at one of the routers. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 98: Restoring Or Rebooting The Gateway

    To display the Network Diagnostic Tools menu, click Troubleshooting in the menu bar, and then click the Restore Reboot Gateway submenu in the menu bar. Figure 54 shows an example of the menu. Figure 54. Example of the Restore / Reboot Gateway Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 99: Changing The Login Password

    For security purposes, every typed character appears as a dot (). SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Change Password menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 100: Configuring The Gateway's Mso Interface

    5 Configuring the Gateway’s mso Interface After configuring your computer for TCP/IP and following the preconfiguration guidelines in Chapter 3, use that computer’s Web browser to configure your SMCD3GNV Gateway using the Gateway’s mso interface. This chapter describes how to use your computer’s Web browser to configure the Gateway.

  • Page 101: Accessing The Gateway's Web Management

    3. In the Login User Password screen, enter the default username and x default password furnished by SMC Networks. Both are case sensitive. For security, each password character appears as a dot (●). After you log in, we recommend you change the default password on the Change Password menu (see “Changing the Login Password”...

  • Page 102: Understanding The Web Management Interface Menus

    Gateway’s Internet access  Status of the Gateway’s wireless connection  Firewall security level  A control panel at the bottom of the menu provides links for accessing comcast.net, help, security, smartzone, and customer central. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 103 Some menus in the menu bar have submenus associated with them. If you click a menu that has submenus, the submenus appear below the menu. For example, if you click the Connection menu, the submenus in Figure 58 appear. Figure 58. Example of Connection Submenus SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 104: Web Management Interface Menus

    Use a wizard to set up your home network. Connected Devices > Computers View computers connected to the Gateway’s LAN, add computer’s with static IP addresses to the Gateway’s LAN, and add WiFi-protected clients to the Gateway’s LAN. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 105 Reset the Gateway, reset the Wi-Fi router only, restore the Gateway’s wireless settings only, or restore the Gateway’s factory settings. Troubleshooting > Change Password Change the password used to log in to the Gateway’s Web management interface. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 106: Configuring The Gateway Settings

    Configuring the Gateway’s mso Interface Configuring the Gateway Settings Using the submenus below Gateway, you can: View at-a-glance settings for your network and connected devices. See page 107.  Set up email notifications. See page 108.  SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 107: Viewing At-A-Glance Configuration Settings

    Shows the names of the devices connected to the Gateway. A View Connected Devices button opens the Devices Computers menu for viewing devices that the Gateway automatically detects using DHCP (see page 135). SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 108: Configuring Email Notifications

    To display this menu, click Gateway > Email Notification in the menu bar. Figure 60 shows an example of the Email Notification menu and Table 25 describes the menu. Figure 60. Email Notification Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 109 The password used by the sender to send email. Password SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Email Notification menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 110: Configuring Connections

    XFINITY network connections. See page 111. Configure the Gateway’s IPv4 or IPv6 settings. See page 112.  View and edit basic and advanced wireless settings. See page 114.  View XFINITY network information. See page 121.  SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 111: Viewing The Gateway's Connection Status

    To display the Status menu, click Gateway > Connection > Status in the menu bar. Figure 61 shows an example of the Status menu and Table 26 describes the menu. Figure 61. Example of the Status Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 112: Viewing And Editing Your Local Ip Configuration

    To display the Local IP Configuration menu, click Gateway > Connection > Local IP Network in the menu bar. Figure 62 shows an example of the Local IP Configuration menu and Table 27 describes the menu. Figure 62. Example of Local IP Configuration Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 113 A read-only value that sows the IPv6 prefix length, which is always 64. SAVE SETTINGS button After enabling or disabling IPv6, click this button to apply. RESTORE DEFAULT SETTINGS Resets the Gateway to the factory default IPv6 settings. FOR IPV6 button SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 114: Viewing And Editing Wireless Configuration

    Private advanced basic settings – see page 117  MAC filter settings – see page 119  WiFi client setup configuration (WPS) - see page 120  Connect to your WPS-supported device – see page 121  SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 115: Private Wifi And Public Wifi Networks

    Public WiFi Network Name Shows the name MAC address, and security setting, if any, for each public wireless network MAC Address detected. An EDIT button is provided to change these settings. Security Mode SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 116: Private Wireless Basic Settings

    SAVE BASIC SETTING button Click this button to save your changes to the private wireless basic settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 117: Private Advanced Basic Settings

    Gateway ports that are members of multicast groups. Multicast traffic will only be forwarded to ports identified as members of the specific multicast group or groups. Disable = Gateway does not analyze all IGMP packets. (default) • SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 118 Enable = Gateway transmits the same data stream on multiple antennas at the same time. • SAVE ADVANCED SETTING button Click this button to save your changes to the private wireless advanced settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 119: Mac Filter Settings

    Enter a unique name and MAC address of the wireless devices that you want to manually add to the Wireless Control List, then click Add to add the device. SAVE FILTER SETTING button Click this button to save your changes to the MAC filter settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 120: Wifi Client Setup Configuration (Wps)

    Enter a unique name and MAC address of the wireless devices that you want to manually add to the Wireless Control List, then click Add to add the device. SAVE FILTER SETTING button Click this button to save your changes to the MAC filter settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 121: Viewing Xfinity Network Information

    The information shown on this menu automatically updates (refreshes) every 10 seconds. To display the XFINITY Network menu, click Gateway > Connection > XFINITY Network in the menu bar. Figure 69 shows an example of the XFINITY Network menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 122 Configuring the Gateway’s mso Interface Figure 69. Example of XFINITY Network Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 123: Configuring Firewall Settings

    Clicking this option displays the custom security settings in Figure 71. For more information, see Table 35s. SAVE SETTINGS button After configuring your firewall settings, click this button to save them. RESTORE DEFAULT SETTINGS Resets the Gateway to the factory default firewall settings. button SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 124 113. Essentially, the remote server is asking your system to identify itself and you. This means that port 113 is often probed by attackers as a source of your personal information. Disable entire firewall Disables all of the Gateway’s firewall settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 125: Viewing System Software Settings

    Gateway. To display the Software menu, click Gateway > Software in the menu bar. Figure 72 shows an example of the Software menu. Figure 72. Example of the Software Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 126: Configuring Hardware

    Gateway’s battery status. See page 128.  Link status and MAC address of the Gateway’s four Ethernet ports. See page 129.  Wi-Fi link status and MAC address of the Gateway’s WiFi port . See page 130.  SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 127: Viewing System Hardware Settings

    To display the System Hardware menu, click Gateway > Hardware > System Hardware in the menu bar. Figure 73 shows an example of the System Hardware menu. Figure 73. Example of the System Hardware Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 128: Viewing Battery Settings

    The Battery menu is a read-only screen that shows information about the Gateway’s internal battery. To display the Battery menu, click Gateway > Hardware > Battery in the menu bar. Figure 74 shows an example of the Battery menu. Figure 74. Example of the Battery Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 129: Viewing Lan Ethernet Settings

    To display the LAN Ethernet menu, click Gateway > Hardware > LAN in the menu bar. Figure 75 shows an example of the LAN Ethernet menu. Figure 75. Example of the LAN Ethernet Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 130: Viewing Wi-Fi Settings

    Gateway’s Wi-Fi port. To display the WiFi menu, click Gateway > Hardware > WiFi in the menu bar. Figure 76 shows an example of the WiFi menu. Figure 76. Example of the WiFi Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 131: Configuring Your Home Network

    Figure 77 shows an example of the first page of the Home Network Wizard and Table 36 describes the page. Figure 77. Example of the First Page of the Home Network Wizard SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 132 Re-enter New Password purposes, every typed character appears as a dot (). NEXT STEP button Click this button to display the second page of the Home Network Wizard (see Figure 78 and Table 37). SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 133 Configuring the Gateway’s mso Interface Figure 78. Example of the Second Page of the Home Network Wizard SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 134 Enter Network Password If you select one of the WEP or WPA encryption settings, enter the password used for encryption and decryption. FINISH button Click this button to complete the Home Network Wizard. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 135: Working With Connected Devices

    All of these activities are performed form the Computers menu. To display the Computers menu, click Connected Devices in the menu bar. Figure 79 shows an example of the Computers menu. Figure 79. Example of the Computers Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 136: Manually Adding Computers With Static Ip Addresses

    Computer message appears, click OK to delete the computer or CANCEL to retain it. If you clicked OK, the computer is removed from the Computers menu. Figure 80. Example of the Add Computer Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 137 Static IP address of the computer you want to add. Add a period between each octet in the IP address. Comments Optional comments about the computer. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Computer menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 138 IP address. Comments Optional comments about the computer. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Edit Computer menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 139: Manually Adding Wireless Clients

    7. To delete an online or offline wireless device, click the X next to the device. When the Delete Computer message appears, click OK to delete the device or CANCEL to retain it. If you clicked OK, the device is removed from the Computers menu. <<true??>> SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 140 Read-only screen that shows the network password you entered in the Enter Network Network Password Password option in the Home Network Wizard – Step 2 menu (see “Configuring Your Home Network” on page 131). SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 141 IP address. Comments Optional comments about the computer. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Edit Computer menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 142: Configuring Parental Controls

    3. Identify the trusted computers that are allowed to access the blocked Web sites and keywords. See “Defining Trusted Computers” on page 147. To display the Managed Sites menu, click Parental Control in the menu bar. Figure 84 shows an example of the Managed Sites menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 143 7. To delete a blocked site, click the X next to the site. When the Delete URL Block Rule message appears, click OK to delete the blocked URL or CANCEL to retain it. If you clicked OK, the URL is removed from Blocked Sites on the Managed Sites menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 144 If you selected No for Always Block?, select the time when the Gateway is to start blocking this URL. End on If you selected No for Always Block?, select the time when the Gateway is to stop blocking this URL. Set Blocked Days SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 145 7. To delete a blocked keyword, click the X next to the keyword. When the Delete Keyword Block Rule message appears, click OK to delete the blocked keyword or CANCEL to retain it. If you clicked OK, the keyword is removed from Blocked Keywords on the Managed Keywords menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 146 Configuring the Gateway’s mso Interface Figure 86. Add Blocked Keyword Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 147 Trusted computers let you exempt connected computers from the blocked site and blocked keyword rules you defined in the previous sections. To build a list of trusted computers, perform the following procedure from the Managed Sites menu. <<need to verify??>> SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 148: Blocking Services And Selecting Trusted Computers

    “Defining Trusted Computers” on page 151. To display the Managed Services menu, click Parental Control > Managed Services in the menu bar. Figure 87 shows an example of the menu. Figure 87. Example of Managed Services Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 149 7. To delete a blocked service, click the X next to the service. When the Delete Service Block Rule message appears, click OK to delete the blocked URL or CANCEL to retain it. If you clicked OK, the service is removed from Blocked Services on the Managed Services menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 150 Configuring the Gateway’s mso Interface Figure 88. Add Blocked Service Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 151 Trusted computers let you exempt connected computers from the blocked services rules you defined in the previous section. To build a list of trusted computers, perform the following procedure from the Managed Sites menu. <<need to verify??>> SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 152: Managing Devices And Access Types

    Enabled next to Enable Managed Devices. Enabling or Disabling Access Types By default, all access types are allowed. To block them, display the Managed Devices menu and click Block All next to Access Type. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 153 6. To delete a blocked device, click the X next to the service. When the Delete Blocked MAC Rule message appears, click OK to delete the blocked device or CANCEL to retain it. If you clicked OK, the device is removed from Blocked Devices on the Managed Devices menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 154 Configuring the Gateway’s mso Interface Figure 90. Add Blocked Device Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 155 Monday – Sunday = check the check boxes that correspond to the days when you want the • Gateway to block this device. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Device menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 156: Generating Reports

    2. Using the Time Frame drop-down list, select a time frame that the report is to cover. 3. To show the report, click the GENERATE REPORT button. 4. To print the report with the filter applied, click PRINT. 5. To download the report with the filter applied, click DOWNLOAD SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 157: Using Advanced Features

    IP address. You configure the Gateway’s port forwarding feature using the Port Forwarding menu. To display this menu, click Advanced in the menu bar. Figure 92 shows an example of the menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 158 Forwarding Rule message appears, click OK to delete the port forwarding rule or CANCEL to retain it. If you clicked OK, the rule is removed from the Port Forwarding area on the Port Forwarding menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 159 Check this box to enable the private port range specified in Private Port(s). Enable Port Range SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Service menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 160: Enabling Or Disabling Port Triggering

    Application menu, you can configure the Gateway to co-relate sessions A and B and automatically open the port for the incoming session B. To display the Port Triggering menu, click Advanced > Port Triggering in the menu bar. Figure 94 shows an example of the menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 161 Rule message appears, click OK to delete the port triggering rule or CANCEL to retain it. If you clicked OK, the rule is removed from the Port Triggering area on the Port Triggering menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 162 SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Port Triggering Add menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 163: Remote Management

    IP addresses, or any computer. To display the Remote Management menu, click Advanced > Remote Management in the menu bar. Figure 96 shows an example of this menu and Table 48 describes the settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 164 Configuring the Gateway’s mso Interface Figure 96. Example of Remote Management Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 165: Configuring Dmz Settings

    You configure the Gateway’s DMZ settings using the DMZ menu. To display this menu, click Advanced > DMZ in the menu bar. Figure 97 shows an example of this menu and Table 49 describes the settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 166 Enabled = Gateway’s DMZ feature is enabled. • Disabled = Gateway’s DMZ feature is disabled. • DMZ Host IP addresses of the computer to be used as the DMZ server. SAVE button Click this button to save your settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 167: Configuring Routing Settings

    To access the Routing menu, click Advanced > Routing in the menu bar. Figure 98 shows an example of the menu and Table 50 describes the settings. Figure 98. Example of Routing Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 168 Neighbor Enter the IP address of the Gateway’s RIP neighbor router. SAVE button Click this button to save your settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 169: Configuring Dynamic Dns Settings

    1. Click Advanced > Dynamic DNS. The Dynamic DNS menu appears (see Figure 99). 2. Complete the fields in the Dynamic DNS menu (see Table 51). 3. Click SAVE to save your settings (or click CANCEL to discard them) Figure 99. Example of Dynamic DNS Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 170 Remove next to the host name you want to remove. SAVE button Click this button to save your settings. CANCEL SETTINGS button Click this button to discard your settings on the Dynamic DNS menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 171: Discovering Devices

    To display the Device Discovery menu, click Advanced > Device Discovery in the menu bar. Figure 100 shows an example of the menu and Table 52 describes it. Figure 100. Example of Device Discovery Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 172 Enabled = enables support for zero configuration. • Disabled = disables support for zero-configuration (default) • SAVE button Click this button to save your settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 173: Troubleshooting The Gateway

    Reset the Gateway, reset your Wi-Fi router, or restore the Gateway’s WiFi and factory  default settings. See page 177. Change the password used to log in to the Gateway’s Web interface. See page 178.  Note: For additional troubleshooting procedures, see Chapter 6. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 174: Generating Logs

    5. Using the Time Frame drop-down list, select a time frame that the log is to cover. 6. To show the log, click the SHOW LOGS button. 7. To print the log with the filter applied, click PRINT. 8. To download the log with the filter applied, click DOWNLOAD. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 175: Testing Connectivity To Destination And Ip Addresses

    IP address. To display the Network Diagnostic Tools menu, click Troubleshooting > Diagnostic Tools in the menu bar. Figure 102 shows an example of the menu. Figure 102. Example of the Network Diagnostic Tools Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 176 If the test is successful, you know that the IP address you are having difficulty reaching is alive and physically reachable. If there are routers between the Gateway and the IP address you are having difficulty reaching, the problem might be at one of the routers. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 177: Restoring Or Rebooting The Gateway

    To display the Network Diagnostic Tools menu, click Troubleshooting > Restore/Reboot Gateway in the menu bar. Figure 103 shows an example of the menu. Figure 103. Example of the Restore / Reboot Gateway Menu SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 178: Changing The Login Password

    For security purposes, every typed character appears as a dot (). SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Change Password menu. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 179: Troubleshooting Procedures

    • Gateway is Not Passing DHCP Address to a computer (page 195) • Determining a Computer’s MAC Address (page 196) • Wireless Troubleshooting See page 198 Application and Gaming Troubleshooting See page 204 SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 180: Basic Troubleshooting Procedures

    If this behavior does not occur, see Table 54. If the incorrect behavior persists, use the Reset button to return the Gateway to its factory default configuration settings (see “Using the Reset Button” on page 17). SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 181 2. Lift the handset of the device connected to the Gateway’s telephone 2 interface, Confirm that the Tel LED goes ON. Hang up the device (place the device onhook) and confirm that the Tel LED goes OFF. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 182: Advanced Troubleshooting Procedures

    Figure 2, for instance, shows examples of how Microsoft Windows XP shows connection statuses in the Network Connections window. For information about other operating systems, refer to the documentation for those operating systems. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 183: Troubleshooting Configuration Problems

    255.255.255.000 ). For example, if the IP address for the Gateway is 10.1.10.1 , the other devices on the network must have an IP address whose: First three octets are 10.1.10 .  SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 184 Windows IP Configuration (ipconfig) to see the IP address of a computer running a Windows operating system. However, if you want even more information, such as IP routing and DHCP information, type ipconfig /all instead of ipconfig in the Windows sections that follow. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 185 3. In the DOS command window, type ipconfig and then press Enter. Your IP address will be listed (see Figure 107). 4. When you finish, type exit at the command prompt and press Enter to close the window SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 186 3. In the DOS command window, type ipconfig and then press Enter. Your IP address will be listed (see Figure 107). 4. When you finish, type exit at the command prompt and press Enter to close the window. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 187: Troubleshooting Software-Interaction Problems

    Enable one at a time and see when things break again. When they do, you know where the problem is and you can either replace that product with one that does not cause problems or change the program's configuration to resolve the problem. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 188: Specific Troubleshooting Procedures

    – Local Network = Connected – No of Clients connected = a number greater than zero If your statuses show no local network connection and/or no clients connected, proceed to the next step. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 189: Unable To Access The Internet

    Gateway to the cable service. If the Online LED does not go ON after the Gateway has been powered up for several minutes, contact your cable provider to confirm that the service is active. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 190 NIC attached to the Gateway to connect to the Internet. 12. Try accessing the Internet with a different browser. If you succeed, the problem exists with the previous browser you used. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 191: Unable To Access Networked Devices

    3. Click OK. A message similar to the following appears (in this example, 192.168.0.1 is the IP address entered as part of the ping command): Pinging 192.168.0.1 with 32 bytes of data If the destination IP address was contacted successfully, a message similar to the following appears: SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 192: Testing The Path From A Computer To The Internet

    Add Computer Menu (see “Manually Adding Computers with Static IP Addresses to the Wireless Network” on page 65). 5. When you finish, type exit at the command prompt and press Enter to close the window SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 193: Using Ping On A Macintosh

    If you receive destination host unreachable, you are not on the same subnet as the destination address. Change your IP address to communicate with the destination address. Figure 109. Ping Tab on the Network Utility Page SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 194: Gateway Disconnects From The Internet

    If the disconnections are limited to wireless clients only Focus on factors that affect wireless clients, such as: Network selection and security  Hardware access control  Client TCP/IP settings  Signal strength  Sources of interference  SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 195: Slow Web Browsing

    Gateway is Not Passing DHCP Address to a computer If the Gateway is not passing DHCP addresses to a computer over a wired or wireless connection: 1. Be sure computer IP is not statically set already. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 196: Determining A Computer's Mac Address

    Figure 110, the MAC address is 00-1E-8C-94-09-EA , which is the physical address of the NIC card. 5. When you finish, type exit at the command prompt and press Enter to close the window. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 197: Apple Macintosh Windows Os X

    For a wired MAX running OS 10.3 and later), select the Ethernet tab. The number next  to the Ethernet ID is your MAC address. For a wireless connection (AirPort), select AirPort tab . The number next to the AirPort  ID is your MAC address. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 198: Wireless Troubleshooting

    2. Change the wireless channel of the Gateway. Just like one radio station may be clear while another suffers from interference, sometimes one wireless channel is clearer than others. To change channels: a. Open a Web browser on the computer. b. Log in to the Gateway’s Web management interface. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 199: Unable To Connect To A Wireless Network Using Windows Xp And Vista

    9. Right-click Wireless network connection and select Status. 10. Click details and check the IPv4 address. 11. If there is a valid IPv4 address, check whether the computer can access the Internet wireless. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 200 4. Click the Wireless network tab. 5. Click the Properties button next to Remove. 6. Click the Authentication tab and uncheck the Enable IEEE 802.1x authentication for this network checkbox. 7. Click OK to update the settings. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 201: Achieving Optimal Wireless Performance

    Channel options in the Wireless menu (see “Viewing and Editing Wireless Configuration” on page 49) to see whether your signal strength improves. You do not need to change your computer's configuration, because it'll automatically detect the new channel. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 202: Wireless Ieee 802.11N Guidelines

    (MIMO). The additional transmitter and receiver antennas allow for increased data throughput, at speeds up to 100 Mbps, which is 4-to-5 times faster than 802.11g. 802.11n also offers a better operating distance than current networks. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 203 However, if this default setting has a negative impact on clients with low signals, you might want to select 20 MHz operation in the Gateway’s Channel Bandwidth setting in the Wireless menu (see page 51) to limit connections to 20 MHz only. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 204: Application And Gaming Troubleshooting

    Enable the Gateway’s UPnP feature (see “Discovering Devices” on page 92).  Open specific ports for the game server.  Enable wireless on PSP.  Nintendo DS does not support WPA or passphrase. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 205: Appendix A - Specifications

    Full-featured CLI provides enhanced troubleshooting and setup  DHCP server  Ipv6 support coexist Ipv4  Downloadable configuration files allow for easy setup and installation.  Universal Plug and Play (UPnP) enabling any UPnP devices seamlessly  SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 206 Application Level Gateways (ALG) Web-based authentication   Intrusion Detection Comprehensive Logging   Denial of Service (DoS) prevention Domain Validation   Trojan Horse Prevention Content and Filtering Features   Smart Tracking   SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 207 Frequency Range: 5 to 42MHz (edge to edge) DOCSIS  LEDs Power  DS ( Downstream)  US (Upstream)  Online  Link  Diag   LAN (1-4)  WiFi   SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 208 L x W x H: 2 x 9 x 9 in (50.8 x 228.6 x 228.6 in)  Weight: 930 g (2.05 lbs)  Input Power 12V/2A  Regulatory Certification FCC Part 15B Class B  UL/cUL  Power Supply Energy Star Rating Level IV  SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 209: Appendix B - Compliances

    Section 820-93 of the National Electric Code which provide guideline for proper grounding and, in particular, specify that the Coaxial cable shield shall be connected to the grounding system of the building, as close to the point of cable entry as practical. SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 210 This equipment cannot be used on telephone company provided coin service. Connection to Party Line Service is subject to state tariffs. SMCD3GNV Wireless Cable Modem Gateway User Manual...

  • Page 211: Index

    87, 160, 163 port triggering, 87, 90, 160 Change Password menu, 99, 178 Disabling firewall, 35 Comcast Network menu, 46 Disabling proxy settings Comcast network status, 44, 111 Firefox, 34 Computers Internet Explorer, 34 SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 212 LAN, 21 IPv4 addressing, 47, 112 connecting to the public telephone network, 22 IPv6 addressing, 47, 112 connecting to the WAN, 22 connectivity to destination address, 97, 176 connectivity to IP address, 97, 176 SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 213 Menus in Web management, 38, 40, 102, 104 Microsoft TCP/IP configuration for Windows 2000, 25, 26 TCP/IP configuration for Windows 7, 30 Rear panel, 15 TCP/IP configuration for Windows Vista, 27 Rebooting restoring custom settings, 17 Report filters, 82 SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 214 Web management menus Troubleshooting Advanced Features, 84, 157 basic setup procedures, 180 At a Glance, 42, 107 Gateway Disconnects from the Internet, 194 Battery, 57, 128 Gateway is not passing DHCP to computers, 195 SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 215 Wireless menu, 49, 114 Parental Controls, 68, 142 Wireless troubleshooting, 198 Port Blocking, 91 Port Triggering, 87, 160 Reports, 82 XFINITY Network menu, 121 Restore / Reboot Gateway, 98, 177 Software, 55, 125 SMCD3GNV Wireless Cable Modem Gateway User Manual...
  • Page 216 20 Mason Irvine, CA. 92618 U.S.A. http://www.smc.com Document number: DORY06172010...
  • Page 217 FCC Statement: Federal Communication Commission Interference Statement 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.

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