14 Replies Latest reply: Dec 7, 2012 2:32 PM by CMCSK
himbaer2 Level 1 Level 1 (0 points)

I just got a new hard drive and went to Apple to get the OS installed. Now back at home I tried to upgrade the OS but can't log on to the internet. I was able to connect to the wireless here at home but apparently i don't have an IP adress since it assigned me a temporary address and mentioned I might not be able to connect to the internet.


MacBook Pro, Mac OS X (10.6.8)
  • 1. Re: My mac does not have an IP address, how do i get one?
    BobTheFisherman Level 6 Level 6 (10,970 points)

    power off your modem, router and computer. Power up your modem, router, and computer in order and wait until the previous device has finished powering up before powering on the next device.

  • 2. Re: My mac does not have an IP address, how do i get one?
    himbaer2 Level 1 Level 1 (0 points)

    This may sound stupid but what part is my modem? How do i find it and turn it off?

  • 3. Re: My mac does not have an IP address, how do i get one?
    BobTheFisherman Level 6 Level 6 (10,970 points)

    The device that connects to your isp's cable, assuming you have an isp.

  • 4. Re: My mac does not have an IP address, how do i get one?
    himbaer2 Level 1 Level 1 (0 points)

    Is it possible that the box for the router is also the modem? I have verizon FIOS and only one device which I associate with my internet connection. I turned it off and noticed my imac can not access internet. There is a white cable going to a splitter which also goes to my TV top set and from there somewhere in the wall. I know I have a box outside the house and another in the basement. none have switches or cables that I think i should play around with.

  • 5. Re: My mac does not have an IP address, how do i get one?
    BobTheFisherman Level 6 Level 6 (10,970 points)

    himbaer2 wrote:

     

    Is it possible that the box for the router is also the modem?

    <snip>

    Yes.

  • 6. Re: My mac does not have an IP address, how do i get one?
    CMCSK Level 6 Level 6 (10,425 points)

    Call Verizon FIOS tech support.  Ask them for your ip address which you can imput manually - System Preferences/Network/Airport/click on the Advance button/TCP/IP -Configure IPv4:  Using DHCP

     

     


    System Preferences/Internet & Network/Network

    Unlock the padlock

    Locations:  Automatic

    Highlight Airport

    Click the Assist Me button

    In the popup window click the Diagnostic button.

     

    Post the results.

     

     

     

     

     

     

     

     

     

     

     

     

     

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  • 7. Re: My mac does not have an IP address, how do i get one?
    Network 23 Level 6 Level 6 (11,695 points)

    himbaer2 wrote:

     

    apparently i don't have an IP adress since it assigned me a temporary address and mentioned I might not be able to connect to the internet.

    Some background. The reason it was suggested to reset your Internet hardware is because the IP address is supposed to be handed out by your router. (And yes, these days many routers are also cable/DSL modems in one combined box.)

     

    For example, wherever I bring my MacBook Pro, to the library, coffee shop, or home, when I turn it on it obtains an IP address from whatever router is in the room.

     

    A self-assigned IP means for some reason the computer was not handed out an IP address by the router. This is not normal because it's just supposed to happen automatically. When this happens, the Mac gives up and comes up with its own number, but that's not going to connect to anything.

     

    One way to test this is: What happens when you take your MacBook Pro to a public network like at the Starbucks down the street. Does that work? If yes, the problem is at your home. If no, the problem may be at the Mac.

  • 8. Re: My mac does not have an IP address, how do i get one?
    himbaer2 Level 1 Level 1 (0 points)

    Obviuosly the problem is at my home then. I saw the internet working fine when we got the OS loaded on my new hard drive, now back at home I can not get the macbook online. I'm also currently with my imac online. How come my imac finds the number but not the macbook? Does it have anything to do with the fact that I just replaced the hard drive? And if so what do i need to do to fix it.
    Being the fact that the devices get the IP from the router. would the iMac and the macbook have the same IP or do they assign different ones to each device?

  • 9. Re: My mac does not have an IP address, how do i get one?
    BobTheFisherman Level 6 Level 6 (10,970 points)

    Do as I told you. It is very simple to at least try by pulling the plug on your modem/router/gateway. Don't make this more complecated than it is.

     

    Your ISP assigns an ip address to your modem/router/gateway device. Each computer that connects to the modem/router/gateway gets an ip address from the modem/router/gateway. Somehow your modem/router/gateway device is not assigning an ip address to your computer.

     

    You can also check in your system preferences that in netwotk you have the computer set to get its ip address using dhcp.

  • 10. Re: My mac does not have an IP address, how do i get one?
    himbaer2 Level 1 Level 1 (0 points)

    I already tried that. I guess I should have mentioned that I tried it multiple times so we can rule this quick fix out. I unplugged the moden and plugged it back in several times and then after it was done loading I started the laptop. It gave me the same error as before.

    My next try will be calling verizon to see if there is a different IP I should b using for my leaptop.

  • 11. Re: My mac does not have an IP address, how do i get one?
    BobTheFisherman Level 6 Level 6 (10,970 points)

    If you have a router then Verizon can not help you with internal ip addresses. Internal ip addresses assigned by your router are private ip address and Verizon has no visibility into what these are.

  • 12. Re: My mac does not have an IP address, how do i get one?
    himbaer2 Level 1 Level 1 (0 points)

    I appreciate ALL the help I got here. I did learn a lot.

     

    Here is the issue. And I don't blame you if you want to shoot me.

     

    I entered the wrong wireless password.

     

    It's as simple as that. What had me confused was that it showed as connected and only when I tried to access the internet it came up with the self assigned IP.

     

    The verizon tech was quick in finding this mistake. I'm glad it was that easy.

  • 13. Re: My mac does not have an IP address, how do i get one?
    Network 23 Level 6 Level 6 (11,695 points)

    Glad you got it figured out!

    himbaer2 wrote:

     

    Being the fact that the devices get the IP from the router. would the iMac and the macbook have the same IP or do they assign different ones to each device?

    Not sure if this got answered yet, but the answer is that the purpose of the IP address is so that the router can "route" data to the correct machine on the network, so the IP address must be unique for every device on the network. If you put your (wired or wireless) Mac, PC, iPhone, Android tablet, Windows phone, on your network, every one of those devices will get assigned its own unique IP address. It's kind of like assigning seats on a plane. The airline needs to know where everybody is sitting and only one person can be in each seat. Your seat number is like an IP address. When you change planes, you get a different seat number. When you change networks, your Mac will get a different IP address. These addresses are private within each network.

     

    The modem/router has its own separate IP address that is on the public Internet, to distinguish it from all the other modem/routers on the Internet.

  • 14. Re: My mac does not have an IP address, how do i get one?
    CMCSK Level 6 Level 6 (10,425 points)

    BobTheFisherman wrote:

     

    If you have a router then Verizon can not help you with internal ip addresses. Internal ip addresses assigned by your router are private ip address and Verizon has no visibility into what these are.

     

    Yes they do!  Verizon's FIOS routers are their own and also the tv is connected to it.  If you have one of their bundled packages (tv, phone, internet) and their updated "tv" cable boxes, you can view your computers ip address and everything else about your computer through your tv - Verizon's Menu/Settings.

     

     

     

     

     

     

     

     

     

     

     

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