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Configuring Your Cable Modem Internet Service: All-in-One Guide

This document provides instructions for connecting a desktop computer to Stanford's internet service, provided by University IT. Only PC-compatibles running Windows 2000, Windows XP, or Windows Vista, or Macintosh computers running Mac OS X, are supported. These instructions assume you have a computer equipped with either a built-in ethernet port or an ethernet network interface card.

General network information

The computer network in Stanford residential communities (including Coaches Corner, Welch Road Apartments, Stanford West, and Olmsted Terrace) is a cable modem system, not unlike what you might get from Comcast or other cable TV vendors. You will receive an Arris WBM 760A cable modem from University IT. You should not purchase your own cable modem or DSL router, as University IT will not support any problems encountered by client-provided cable modem or DSL routers. If you remove the provided cable modem and substitute another, the service will automatically disconnect. If you need additional ethernet ports, we recommend a simple ethernet hub or switch.

You are allowed up to five concurrent connections for each cable modem. You may register more than five computers but, only five can communicate through your cable modem at a time. If you need more than five active connections, it is highly recommended that you get an additional cable modem connection, as that will also increase your bandwidth.

Note: The cable modem provided by University IT provides internet service through a wired ethernet connection. If you want to have wireless internet access, purchase a broadband router and connect that router to the cable modem through the ethernet port.

Plugging in Your Cable Box

If you use Stanford Cable TV, you will receive the Motorola DCX3400 High-Definition DVR as your cable box. Follow the instructions below to plug into your cable box. 

  1. Plug the coax cable into the outlet marked CABLE IN (marked with a 1 on the diagram above) and into the wall unit.
  2. The HDMI cord plugs into the HDMI outlet (marked with a 2 on the diagram) and into your television. 
  3. The power cord plugs into the POWER outlet (marked with a 3 on the diagram) and into the wall outlet.

More information

You may also go to the following sites for more information:

Support

You can also get live help 24/7.

  • During business hours (Monday through Friday, 8 a.m. - 5 p.m.) call 650-725-4357 and press option 3.
  • For all other hours, call 650-725-4357 and press option 2.

Connecting the Cable Modem

Cable Modem 900A

  1. Connect one end of the coax cable to the cable outlet or splitter, and the other end to the Cable Modem’s Cable connector (C). Tighten the connections by hand, then tighten an additional 1/8 turn with a wrench. Note: For best performance, use high-quality RG-6 type coax cable and minimize or eliminate splitters between the cable jack and the Cable Modem.
  2. Insert the plug from the power cord into the Power connector on the Cable Modem (D) and insert the power cord into an AC outlet. The Power light on the front of the Cable Modem lights up, then flashes once.
  3. Connect one end of the yellow Ethernet cable to the yellow port on the back of the Cable Modem labeled “Ethernet 10/100/1000” (A), and the other end to the Ethernet port on a computer, hub, or broadband router.

Note: The cable modem provided by University IT provides internet service through a wired Ethernet connection. If you want to have wireless internet access, purchase a broadband router and connect that router to the cable modem through the Ethernet port.

Configuring Windows Vista

Register your hardware address

You need to register the hardware address of each computer you would like to use to be able to connect it to the cable modem. To do this submit a Help ticket. Be sure to include your name, contact information, the hardware address of the computer you are registering, and which of your assigned IP addresses you would like to use.

Although your cable modem service is not the same as on-campus ethernet service, the settings for your computer are nearly identical. The instructions for connecting a host on campus provided at the Essential Stanford Software site are correct except for the "Registering Your Ethernet Address" section, which you do through a Help ticket as mentioned above.

Install your network adapter

Typically, Windows Vista configures the network adapter during the installation procedure. If you installed a network interface card after installing Windows Vista, consult the manufacturer's instructions for configuring the adapter.

Configure your network properties

  1. Select Control Panel from the Start menu and choose Network and Internet. If you are using Classic View, you will see the control panel icons instead of categories

  2. Select Network and Sharing Center category or Double-Click the Network and Sharing Center icon.

  3. Under the list of Tasks, click Manage network connections

  4. Double-click the Local Area Connection, when the Local Area Connection Status dialog box is displayed, click Properties.

  5. In the Local Area Connection Properties dialog box, do the following:

    • Verify that the Internet Protocol Version 4 (TCP/IPv4) box is checked.

    • Hover your mouse over the adapter listed in the Connect using box to display the hardware Ethernet MAC (Media Access Control) address. Make note of this address because you will need it to register your computer for use on the Stanford network.

    • Click Internet Protocol Version 4 (TCP/IPv4) once to highlight it and then click Properties.

  6. In the Internet Protocol Version 4 (TCP/IPv4) Properties dialog box:

    • Click Obtain an IP address automatically.

    • Click Obtain DNS server address automatically.

    • Click OK to exit the Internet Protocol Version 4 (TCP/IPv4) Properties dialog box.

  7. Click Close to exit the Local Area Connection dialog box, and then click Close to exit the Local Area Connection Status dialog box.

Configuring Windows XP

Register your hardware address

You need to register the hardware address of each computer you would like to use to be able to connect it to the cable modem. To do this submit a Help ticket. Be sure to include your name, contact information, the hardware address of the computer you are registering, and which of your assigned IP addresses you would like to use.

Although your cable modem service is not the same as on-campus ethernet service, the settings for your computer are nearly identical. The instructions for connecting a host on campus provided at the Essential Stanford Software site are correct except for the "Registering Your Ethernet Address" section, which you do through a Help ticket as mentioned above.

Install your network adapter

Typically, Windows XP configures the network adapter during the installation procedure. If you installed a network interface card after installing Windows XP, consult the manufacturer's instructions for configuring the adapter.

Configure your network properties

  1. Select Control Panel from the Start menu and choose Network and Dial-Up Connections.
  2. If you are using Windows XP's Category View, select the Network and Internet Connections category. If you are using Classic View, go on to the next step.
  3. Choose Network Connections.
  4. Right-click on the Local Area Connection icon and select Properties.
  5. Under This connection uses the following items, verify that the Internet Protocol (TCP/IP) box is checked.

    If your network adapter is not listed under Connect using, you must first install your network interface card; see Install your Network Adapter, above. If the adapter is listed, but Internet Protocol (TCP/IP) is not displayed, you must install this protocol before proceeding. Click the Install button. In the resulting dialog box, select Protocol and click Add. In the next dialog box, select Internet Protocol (TCP/IP) from the list and click OK to return to the Local Area Connection Properties window.
  6. Select Internet Protocol (TCP/IP) and click Properties.
  7. Verify that Obtain an IP address automatically and Obtain DNS server address automatically are selected.
  8. Click OK to return to the Local Area Connection Properties window.
  9. Click Close to exit the Local Area Connection Properties window and save your changes.

Configuring Windows 2000

Register your hardware address

You need to register the hardware address of each computer you would like to use to be able to connect it to the cable modem. To do this submit a Help ticket. Be sure to include your name, contact information, the hardware address of the computer you are registering, and which of your assigned IP addresses you would like to use.

Although your cable modem service is not the same as on-campus ethernet service, the settings for your computer are nearly identical. The instructions for connecting a host on campus provided at the Essential Stanford Software site are correct except for the "Registering Your Ethernet Address" section, which you do through a Help ticket as mentioned above.

Install your network adapter

Typically, Windows 2000 configures the network adapter during the installation procedure. If you installed a network interface card after installing Windows 2000, consult the manufacturer's instructions for configuring the adapter.

Configure your network properties

  1. Select Settings from the Start menu to open the Control Panel, and then choose Network and Dial-Up Connections.
  2. Right-click on the Local Area Connection icon and select Properties.
  3. Under Components checked are used by this connection, verify that the Internet Protocol (TCP/IP) box is checked.

    If your network adapter is not listed under Connect using you must first install your network interface card; see Install your Network Adapter, above.  If the adapter is listed, but Internet Protocol (TCP/IP) is not displayed, you must install this protocol before proceeding.  Click Install.  In the resulting dialog box, select Protocol and click Add.  In the next dialog box, select Internet Protocol (TCP/IP) from the list and click OK to return to the Local Area Connection Properties window.
  4. Select Internet Protocol (TCP/IP) and click the Properties button.
  5. Verify that Obtain an IP address automatically and Obtain DNS server address automatically are selected.
  6. Click OK to return to the Local Area Connection Properties window.
  7. Click OK to exit the Local Area Connection Properties window and save your changes.
  8. Click Yes when prompted to restart your PC.

Configuring Mac OS X

Register your hardware address

You need to register the hardware address of each computer you would like to use to be able to connect it to the cable modem. To do this submit a Help ticket. Be sure to include your name, contact information, the hardware address of the computer you are registering, and which of your assigned IP addresses you would like to use.

These instructions cover manual configuration of the network connection. If you are setting up your computer for the first time, the Configuration Assistant will automatically launch; quit this application and follow the steps below to configure the connection instead.

Although your cable modem service is not the same as on-campus ethernet service, the settings for your computer are nearly identical. The instructions for connecting a host on campus provided at the Essential Stanford Software site are correct except for the "Registering Your Ethernet Address" section, which you do through a Help ticket as mentioned above.

Configure your network properties

  1. Click System Preferences located in the Dock and choose Network.
  2. Select New Location from the Location drop-down box.  You may choose any name you desire for the new location.
  3. Select Built-in Ethernet from the Show drop-down box.
  4. Select the TCP/IP tab.
  5. Select Using DHCP from the Configure drop-down box.
  6. In the Search Domains box, enter stanford.edu.
  7. Click Apply Now to save your changes when prompted.

How to Determine Your Hardware Address

About your hardware address

Each device has a unique hardware address, sometimes referred to as the physical or MAC address.  The hardware address of your device must be included in your computer’s network database record for Stanford’s data service to work properly.  You may use the following instructions to determine the address if you are asked for this information when ordering service.

Windows 7, 8, 8.1, and 10

  1. Click the Start button.
  2. Click (or search for) Control Panel.
  3. Click View network status and tasks (make sure View by is by category).
  4. Click Change adapter settings.
  5. Right-click the connection being used and select Status.
  6. Click the Details button under Connection. The MAC address is labeled under physical address.

Mac OS X

  1. Click the Apple menu on the menu bar at the top of the screen.
  2. Click System Preferences.
  3. Click the Network icon.
  4. Click Advanced. The MAC address is located under the Hardware tab.

iPhone and iPad

  1. Tap the Settings app.
  2. Tap General.
  3. Tap About.
  4. Scroll down and the MAC Address is under Wi-Fi Address.

Android

Note: The options on Android devices will slightly differ depending on how the manufacturer customized the device.

  1. Tap app drawer and select the Settings app.
  2. Tap the Wi-Fi option under Wireless & networks.
  3. Tap the menu button.
  4. Tap Advanced to open the Advanced Wi-Fi screen.
  5. You’ll find the IP address and MAC address displayed at the bottom of this page.

Chrome OS

  1. Click the menu button in Chrome.
  2. Click Settings.
  3. Click the name of the Wi-Fi network you’re connected to at the top of the Settings page.
  4. Click Wi-Fi network again.
  5. The MAC address will be located under the Connection tab.

Linux

  1. Click the network icon.
  2. Select Connection Information. The MAC address is labeled under hardware address

Data service configuration (delete this section if this stays a one-page guide)

Getting additional help

If you have questions about setting up a network function in your apartment; need additional assistance configuring your computer; have problems with your data service; or you would like to order additional services or make modifications to an existing service, please contact the IT Service Desk at 725-HELP (650-725-4357), Option 2. For more information on technical support for wireless, please see the web site.

Last modified October 5, 2020