How to Configure the Motorola SURFboard SB5120 Modem

Written by tamara runzel
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How to Configure the Motorola SURFboard SB5120 Modem
Configure your SB5120 modem and computer so you can start surfing the Web. (Polka Dot RF/Polka Dot/Getty Images)

Installing and configuring your Motorola Surfboard SB5120 modem allows you faster access to the Internet so you can search the Web more efficiently. The SB5120 is a cable modem which is always on, so you don't have to wait for a dial-up connection to complete. Once you install your new Motorola modem, you must configure it before you can start surfing the Internet.

Skill level:
Moderately Easy

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Instructions

  1. 1

    Go to your "Start" menu, represented by the Windows icon in the bottom-left corner of the computer desktop.

  2. 2

    Select "Control Panel" followed by "Network and Internet."

  3. 3

    Click "Network and Sharing Center" and then "Change adaptor settings" located on the far left of the screen.

  4. 4

    Right-click "Local Area Connection" and choose "Properties."

  5. 5

    Check the box next to "Internet Protocol Version 6 (TCP/IPv6)" and click the "Properties" button.

  6. 6

    Click next to "Obtain an IP Address Automatically" and "Obtain DNS Server Address Automatically," then click "Advanced."

  7. 7

    Verify "DHCP Enabled" is listed under "IP addresses," nothing is listed under "Default gateways" and "Automatic Metric" is checked.

  8. 8

    Click the "DNS" tab and verify nothing is listed under "DNS server addresses, in order of use." Ensure "Append primary and connection specific DNS suffixes," "Append parent suffixes of the primary DNS suffix" and "Register this connection's addresses in DNS" are all checked. Do not check "Append these DNS suffixes (in order)."

  9. 9

    Click the "WINS" tab and verify there are no addresses under "WINS addresses, in order of use:." Select both "Enable LMHOSTS lookup" and "Default: Use NetBIOS setting from the DHCP server."

  10. 10

    Click "OK" to close the window.

  11. 11

    Click the "Alternate Configuration" tab and ensure "Automatic private IP address" is selected and click "OK."

  12. 12

    Restart the computer.

Tips and warnings

  • These steps apply to Windows 7.

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