DHCP Enabled Speedstream 5100 modem

By neilson22
May 13, 2009
  1. Hello,

    I have a Speedstream 5100 modem and I think the problem i am having is that the Dhcp is not enabled. I recently move my modem, if that makes a difference and it suddenly would not connect. If anyone could help me with this problem or help me figure out what my problem is that would be great.
  2. LookinAround

    LookinAround Ex Tech Spotter Posts: 6,491   +183

    What do you mean "recently moved my modem"?

    Two questions
    1) Did you change ISPs?
    2) Has the hardware connected to your modem changed (e.g. did you add a router between your computer and the modem?) as the modem "sees" the MAC address of the first device connected to it. And sometimes won't connect to any other device with a different MAC address
  3. neilson22

    neilson22 TS Rookie Topic Starter

    I moved the modem from one room to another.

    The ISPs have not change to my knowledge...
  4. LookinAround

    LookinAround Ex Tech Spotter Posts: 6,491   +183

    what about the first device connected to the modem? (e.g. the first computer or router connected to the modem) once you switched rooms. Did the first connected device change?
  5. neilson22

    neilson22 TS Rookie Topic Starter

    the modem was connected to the same computer...? just moved to a new room...
  6. LookinAround

    LookinAround Ex Tech Spotter Posts: 6,491   +183

    I assume new room has a different connection jack? have you tried moving it back? maybe problem is in connnector in the new room

    also try logging into your speedstream... see what it reports

    in a browser window http://speedstream

    Search online (or your ISP website) for the speedstream 5100 manual
  7. jobeard

    jobeard TS Ambassador Posts: 9,322   +621

    see this post,9168759

    the device is not a router and thus does not have dhcp. the ip address your
    system will get will be the one assigned by the ISP

    get a command prompt and enter
    ipconfig /all

    you need to addresses for
    IP address, gateway address, and two DNS addresses​

    use to SEE your address and then if
    you should have no issues.
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