Skip navigation

My mac does not have an IP address, how do i get one?

333 Views 14 Replies Latest reply: Dec 7, 2012 2:32 PM by CMCSK RSS
himbaer2 Calculating status...
Currently Being Moderated
Dec 7, 2012 11:00 AM

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)
  • BobTheFisherman Level 6 Level 6 (10,570 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.

  • BobTheFisherman Level 6 Level 6 (10,570 points)

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

  • BobTheFisherman Level 6 Level 6 (10,570 points)

    himbaer2 wrote:

     

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

    <snip>

    Yes.

  • CMCSK Level 6 Level 6 (10,200 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.

     

     

     

     

     

     

     

     

     

     

     

     

     

    dancingsmilie.gif

  • Network 23 Level 6 Level 6 (11,500 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.

  • BobTheFisherman Level 6 Level 6 (10,570 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.

  • BobTheFisherman Level 6 Level 6 (10,570 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.

  • Network 23 Level 6 Level 6 (11,500 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.

  • CMCSK Level 6 Level 6 (10,200 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.

     

     

     

     

     

     

     

     

     

     

     

    dancingsmilie.gif

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.