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  1. #1

    Member Since
    Jan 03, 2010
    airport extreme connection problems - ip not recognized
    I am trying to replace my Linksys wireless router with an airport extreme base station but am not having any luck in setting it up.

    I followed all directions, but at the end of the setup, I can't get any internet connection because the "ip address is not recognized."

    I have a COMCAST DSL modem that uses DHCP to assign ip addresses. I've tried resetting the COMCAST modem then turning the AEBS, but still no luck.

    Any help would be appreciated.

  2. #2

    Collin Bl's Avatar
    Member Since
    Apr 07, 2009
    Napier NZ
    27 iMac+Thunderbolt, iMac 20, 2TB dual TC, AppleTV, iPh4S
    Have you got the Extreme set to bridge mode like this;

    Click for full size

  3. #3

    VegasGeorge's Avatar
    Member Since
    Sep 23, 2006
    Las Vegas, NV USA
    iMac, and Macbook Pro
    I have my Macs running on an Airport Extreme. Here are my Airport tab settings in System Preferences, Network:

    Airport - Remember networks checked
    TCP/IP - Configure IPv4 Using DHCP, Configure IPv6 Automatically
    DNS -,
    WINS - (no settings)
    802.1X - (no settings)
    Proxies - Web Proxy checked, Use Passive FTP Mode checked
    Ethernet - Configure Automatically, MTU Standard (1500)

    Hope that helps.

  4. #4

    Member Since
    Jan 03, 2010
    I'll try it; thanks.

  5. #5

    Member Since
    Jan 03, 2010
    Okay, I've tried doing the suggested fixes posted above, but to no avail. At one point, I had a green light on my AEBS, but still no internet access. I then changed one setting (I think it was for the IPv6 mode, but can't remember) then the light turned yellow again, and I haven't been able to get it back to green.

    I spoke to a family member (who is a COMCAST guy) but it was over the phone and he really couldn't help me. He did say that I do not need to put in any DNS server addresses, or a router address, that the COMCAST modem will do this automatically.

    I finally unplugged my AEBS and put back my old LinkSys router.

    Here are the settings I currently have for the AEBS. I don't know what I'm doing wrong. Can anyone help? Settings are:

    Internet Connection:
    Connect using: Ethernet
    Connection Sharing: Off (Bridge Mode)
    Configure IPv4 using DHCP
    IP Address: (IP address pushed by the modem:
    Subnet mask:
    Router Address: blank
    DNS Servers: blank
    Domain Name: blank
    DCHP Client ID: blank

    IPv6 Mode: Router
    Block incoming IPv6 connections: Checked
    Configure IPv6: Automatically

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