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Solved: Local Area Connection doesn't have valid IP configuration.

Discussion in 'Networking' started by hobbes203, Apr 18, 2010.

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  1. hobbes203

    hobbes203 Thread Starter

    Joined:
    Apr 18, 2010
    Messages:
    3
    I am pretty sure, from the searches on Google, that this is an infamous and difficult or easy problem in many cases to solve. In my case, it is difficult and I appeal help without being directed to Google!

    The problem lies with wired networking. I am using my sister's HP touchscreen which conveniently has a wireless card built in it. The ipconfig /all will be displayed below this post. I have a Comcast Modem connected to a WRT54GX Linksys router. The router plugs into the wall, which goes to I believe another router or access point, in my parent's closet, (it has numerous amounts of Ethernet wires that I believe connects to every single wired plug in the house) further evidence is if I unplug the access point/router in my parent's closet, the LED for the wired port of the router connected to the modem ceases. I can confirm that directly connecting the computer to the router (not connecting to the wall) gives me internet access.

    Can anyone give me clues or instructions to work with this? All computers cannot connect to the internet via wired connection. This problem also started when wired connected internet started to slow down drastically(the LED was blinking dimly and turns off every few seconds for wired connection), and I reset the router and modem. I also unplugged the access point/router in the closet for one night because I felt it was overheating and the LED wired connection is strong with no blinks but no internet access.

    Microsoft Windows [Version 6.1.7600]
    Copyright (c) 2009 Microsoft Corporation. All rights reserved.



    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Thao-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    Ethernet adapter Bluetooth Network Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
    Physical Address. . . . . . . . . : 00-24-7E-42-EE-19
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Wireless LAN adapter Wireless Network Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : 802.11n Wireless LAN Card
    Physical Address. . . . . . . . . : 00-22-5F-7D-1D-8A
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::f11a:7867:643c:55f9%14(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.1.100(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Sunday, April 18, 2010 3:01:04 PM
    Lease Expires . . . . . . . . . . : Monday, April 19, 2010 3:18:50 PM
    Default Gateway . . . . . . . . . : 192.168.1.1
    DHCP Server . . . . . . . . . . . : 192.168.1.1
    DHCPv6 IAID . . . . . . . . . . . : 234889823
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-59-C3-BF-00-24-8C-5C-D8-7D

    DNS Servers . . . . . . . . . . . : 192.168.1.1
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
    Physical Address. . . . . . . . . : 00-24-8C-5C-D8-7D
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::dda7:9eba:919d:d2d4%11(Preferred)
    Autoconfiguration IPv4 Address. . : 169.254.210.212(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.0.0
    Default Gateway . . . . . . . . . :
    DHCPv6 IAID . . . . . . . . . . . : 234890380
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-59-C3-BF-00-24-8C-5C-D8-7D

    DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
    fec0:0:0:ffff::2%1
    fec0:0:0:ffff::3%1
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter isatap.{B47FF40A-3C16-4585-848E-4107538FF297}:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 12:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter isatap.{911F4FEB-F1CF-4A72-B9B6-FD00B3DE67A4}:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    EDIT: I looked closer at the item in my parent's closet and identified it as a GIGAPORT Workgroup Switch made by Linksys.
     
  2. TerryNet

    TerryNet Moderator

    Joined:
    Mar 23, 2005
    Messages:
    77,606
    First Name:
    Terry
    Not sure whether it will matter, but what is the brand and model of the modem?

    Please confirm my understanding:: the modem connects to the WAN (or Modem or Internet) port of the router and one of the LAN ports is connected to the cable that goes to the switch in the closet. From the switch in the closet ethernet cables connect to wall jacks throughout the house.

    If you connect a computer to one of the other LAN ports on the router you get internet access. But if you connect the same computer to any of the wall jacks you get an APIPA (169.254.x.y IP address) as shown in the ipconfig /all.

    If any of the above is incorrect, please post the correction(s) and don't start the following trouble shooting.

    Try connecting the computer to the same LAN port that the switch is now connected to. Does that still give you internet access? If so, reconnect the original cable and go to the closet and try connecting the computer to the cable that is coming from the router. Does that give internet access?
     
  3. hobbes203

    hobbes203 Thread Starter

    Joined:
    Apr 18, 2010
    Messages:
    3
    I've solved the problem. I figured that due to slower internet connection over the past days that the Linksys switch was dying so I replaced it with a semi-new Netgear switch I had downstairs for my computer and Xbox. Replaced the Linksys and done, all internet woes gone. My internet speed is noticeably faster and I don't buffer on Youtube anymore. The Linksys was used for over 5 years and is put to rest.

    And yes TerryNet, your description accurately maps the setup. Your troubleshooting would have been helpful since I would think I would have a connection and therefore it would lead me to conclude that the switch was dead/dying. Thanks!
     
  4. TerryNet

    TerryNet Moderator

    Joined:
    Mar 23, 2005
    Messages:
    77,606
    First Name:
    Terry
    You're welcome. :) And, yes, I thought you'd be finding the switch or the cable between router and switch to be the defective part.
     
  5. hobbes203

    hobbes203 Thread Starter

    Joined:
    Apr 18, 2010
    Messages:
    3
    Haha, if it was the cable, I would probably quit wired connections and use wireless because the cable from the router to the switch goes into a wall jack, all the way up to the attic (with lots of tubes for central AC) and to the switch in the closet, several rooms away. My dad did all of this and since he passed on, I pretty much fix everything around the house.
     
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