Networking Issue, but read carefully

Discussion in 'Computer Networking and Servers' started by Rod Bishop, Mar 19, 2017.

  1. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    I have a problem with an extra router turned extension hub. I'm using a Centurylink router that works fine and I reconfigured a second router to extend my network to a dead spot in my home.

    If I only have one PC plugged in the first router and have the cat-5 cable to my second second router all in great, including the PC in the spare room, everything works.

    But If I plug another PC (My wife's) in to the first router with with my PC, or two PC's in the first router and a PC in the second router, The connection is lost to the second PC.

    The same thing happens if the second PC (My wife's) is plugged in the first router, with the second router cable PC also plugged in the first router, and all is working great, When I plug in my PC cable in to the first router the signal is lost again.

    As long as Only one PC is plugged into the first router with the cable to the second router with that PC, everything works great.

    How can I get two PC's to work in the first router and the second router cat-5 cable plugged in also?

    The second router is a quest modem redone as a extension router.

    Again, As long as Only one PC is plugged into the first router with the cable to the second router with that PC, everything works great.
     
  2. voyagerfan99

    voyagerfan99 Master of Turning Things Off and Back On Again Staff Member

    Messages:
    22,841
    Do you have just one router giving out DHCP addresses? Because that's how it should be, and sounds like you may be encountering some kind of IP conflict when a second PC joins the network.
     
  3. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    Yes only the first router is set to DHCP. When only one PC is plugged into the first router the second router's PC works fine.
     
  4. beers

    beers Moderator Staff Member

    Messages:
    7,536
    Do you have a physical topology? What kind of IPs do the computers get out of router 1?

    Kind of sounds like to me that it's not behind NAT at all.
     
  5. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    Also if two PC's are on the internet in router one, and working fine, when I plug in the cable which feeds the second router into the first router, one of the two PC's plugged in before will be disconnected from the internet.
     
  6. johnb35

    johnb35 Administrator Staff Member

    Messages:
    39,818
    Sounds like a dhcp issue to me. Or possibly a bad router after so many connections, which can happen.
     
  7. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    Both routers are less than a year old, but if one could create the issues I having would you think it would be the main router?
     
  8. beers

    beers Moderator Staff Member

    Messages:
    7,536
    That's about the equivalent of troubleshooting as throwing a dart at a spinning board while blindfolded.
     
  9. Renzore101

    Renzore101 Member

    Messages:
    334
    Connect all PC's to your devices as you had originally posted and provide us with the output of the following command in command prompt window on each of the PC's : ipconfig /all
     
  10. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    I did the ipconfig /all on each PC while all three are connected at the same time. I printed the report from each PC.

    Do you want all three reports scanned and posted here or just the main PC which is mine?
     
  11. beers

    beers Moderator Staff Member

    Messages:
    7,536
    You can just copy paste the output
     
  12. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    This is from My PC, 2 feet from the Router and plugged directly into it.


    Microsoft Windows [Version 6.0.6002]

    Copyright (c) 2006 Microsoft Corporation. All rights reserved.



    C:\Users\R>ipconfig /all



    Windows IP Configuration



    Host Name . . . . . . . . . . . . : R-PC

    Primary Dns Suffix . . . . . . . :

    Node Type . . . . . . . . . . . . : Hybrid

    IP Routing Enabled. . . . . . . . : No

    WINS Proxy Enabled. . . . . . . . : No

    DNS Suffix Search List. . . . . . : Home



    Ethernet adapter Local Area Connection 3:



    Media State . . . . . . . . . . . : Media disconnected

    Connection-specific DNS Suffix . : Home

    Description . . . . . . . . . . . : ADMtek AN983 based ethernet adapter

    Physical Address. . . . . . . . . : 00-14-BF-55-80-91

    DHCP Enabled. . . . . . . . . . . : Yes

    Autoconfiguration Enabled . . . . : Yes



    Ethernet adapter Local Area Connection 2:



    Connection-specific DNS Suffix . : Home

    Description . . . . . . . . . . . : Intel(R) 82567LM-3 Gigabit Network Connec

    tion

    Physical Address. . . . . . . . . : 00-23-AE-91-2B-7F

    DHCP Enabled. . . . . . . . . . . : Yes

    Autoconfiguration Enabled . . . . : Yes

    Link-local IPv6 Address . . . . . : fe80::1cac:d1cf:180e:21a7%9(Preferred)

    IPv4 Address. . . . . . . . . . . : 192.168.0.3(Preferred)

    Subnet Mask . . . . . . . . . . . : 255.255.255.0

    Lease Obtained. . . . . . . . . . : Tuesday, April 04, 2017 11:58:05 AM

    Lease Expires . . . . . . . . . . : Wednesday, April 05, 2017 11:58:05 AM

    Default Gateway . . . . . . . . . : 192.168.0.1

    DHCP Server . . . . . . . . . . . : 192.168.0.1

    DHCPv6 IAID . . . . . . . . . . . : 218112942

    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1E-C5-68-53-00-23-AE-91-2B-7F



    DNS Servers . . . . . . . . . . . : 192.168.0.1

    205.171.3.66

    NetBIOS over Tcpip. . . . . . . . : Enabled



    Tunnel adapter Local Area Connection* 12:



    Connection-specific DNS Suffix . : Home

    Description . . . . . . . . . . . : isatap.Home

    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0

    DHCP Enabled. . . . . . . . . . . : No

    Autoconfiguration Enabled . . . . : Yes

    Link-local IPv6 Address . . . . . : fe80::5efe:192.168.0.3%19(Preferred)

    Default Gateway . . . . . . . . . :

    DNS Servers . . . . . . . . . . . : 192.168.0.1

    205.171.3.66

    NetBIOS over Tcpip. . . . . . . . : Disabled



    Tunnel adapter Local Area Connection* 13:



    Connection-specific DNS Suffix . :

    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface

    Physical Address. . . . . . . . . : 02-00-54-55-4E-01

    DHCP Enabled. . . . . . . . . . . : No

    Autoconfiguration Enabled . . . . : Yes

    IPv6 Address. . . . . . . . . . . : 2001:0:aca8:fa01:2ca8:2e6c:3f57:fffc(Pref

    erred)

    Link-local IPv6 Address . . . . . : fe80::2ca8:2e6c:3f57:fffc%16(Preferred)

    Default Gateway . . . . . . . . . : ::

    NetBIOS over Tcpip. . . . . . . . : Disabled



    C:\Users\R>
     
  13. Renzore101

    Renzore101 Member

    Messages:
    334
    This all looks normal to me, that machine should have no trouble getting out. What about the other machines?
     
  14. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    I'm having trouble scanning the 4 pages into word, pages 2-3 for wifes PC and 5-6 will be third PC by way of remote router.

    Give me a minute
     
  15. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    This is the PC behind the remote router. It's Wifi from the remote router.

    The remote router is wired back to the main router




    Microsoft Windows [Version 6.0.6002]
    Copyright (c) 2006 Microsoft Corporation. All rights reserved.

    C:\Users\k>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Starbucks
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : Home

    Wireless LAN adapter Wireless Network Connection:

    Connection-specific DNS Suffix . : Home
    Description . . . . . . . . . . . : Linksys Wireless-G PCI Adapter
    Physical Address. . . . . . . . . : 00-0F-66-ED-5F-48
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::19b5:cb33:e4d1:c8de%10(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.0.4(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Tuesday, April 04, 2017 6:47:27 PM
    Lease Expires . . . . . . . . . . : Wednesday, April 05, 2017 6:47:27 PM
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DHCPv6 IAID . . . . . . . . . . . : 234884966
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-3C-85-D9-00-13-21-CE-B7-3D

    DNS Servers . . . . . . . . . . . : 192.168.0.1
    205.171.3.66
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Ethernet adapter Local Area Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . : domain.actdsltmp
    Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit Ethernet
    Physical Address. . . . . . . . . : 00-13-21-CE-B7-3D
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 6:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : 6TO4 Adapter
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 7:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . : 02-00-54-55-4E-01
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fb:2021:1245:3f57:fffb(Pref
    erred)
    Link-local IPv6 Address . . . . . : fe80::2021:1245:3f57:fffb%9(Preferred)
    Default Gateway . . . . . . . . . : ::
    NetBIOS over Tcpip. . . . . . . . : Disabled

    Tunnel adapter Local Area Connection* 11:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : isatap.domain.actdsltmp
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 12:

    Connection-specific DNS Suffix . : Home
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::5efe:192.168.0.4%16(Preferred)
    Default Gateway . . . . . . . . . :
    DNS Servers . . . . . . . . . . . : 192.168.0.1
    205.171.3.66
    NetBIOS over Tcpip. . . . . . . . : Disabled

    C:\Users\k>
    [​IMG]
     
  16. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    This is the second PC which is wired to the main router


    Microsoft Windows [Version 6.0.6002]
    Copyright (c) 2006 Microsoft Corporation. All rights reserved.

    C:\Users\Computer>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Computer-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : Home

    Wireless LAN adapter Wireless Network Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . : domain.actdsltmp
    Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter
    Physical Address. . . . . . . . . : 00-1D-60-D6-27-5B
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . : Home
    Description . . . . . . . . . . . : NVIDIA nForce 10/100 Mbps Ethernet
    Physical Address. . . . . . . . . : 00-1A-A0-76-9C-E7
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::d88e:fd56:f31b:f59b%8(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.0.2(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Tuesday, April 04, 2017 12:42:47 PM
    Lease Expires . . . . . . . . . . : Wednesday, April 05, 2017 12:42:46 PM
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DHCPv6 IAID . . . . . . . . . . . : 201333408
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-15-BE-72-A7-00-1A-A0-76-9C-E7

    DNS Servers . . . . . . . . . . . : 192.168.0.1
    205.171.3.66
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter Local Area Connection* 6:

    Connection-specific DNS Suffix . : Home
    Description . . . . . . . . . . . : isatap.Home
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::5efe:192.168.0.2%17(Preferred)
    Default Gateway . . . . . . . . . :
    DNS Servers . . . . . . . . . . . : 192.168.0.1
    205.171.3.66
    NetBIOS over Tcpip. . . . . . . . : Disabled

    Tunnel adapter Local Area Connection* 7:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : isatap.domain.actdsltmp
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 10:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft 6to4 Adapter #2
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 11:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . : 02-00-54-55-4E-01
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fb:4c4:d67:3f57:fffd(Prefer
    red)
    Link-local IPv6 Address . . . . . : fe80::4c4:d67:3f57:fffd%11(Preferred)
    Default Gateway . . . . . . . . . : ::
    NetBIOS over Tcpip. . . . . . . . : Disabled

    C:\Users\Computer>
     
  17. Renzore101

    Renzore101 Member

    Messages:
    334
    Okay so everything seems to look good on all three machines based off this output. What exactly isn't working in the current configuration?
     
  18. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    The problem is that two of the PC's wired using the main router work fine. When I connect the third ethernet cable which goes to the extension router, one of the two PC's plugged into the main router will lose connection.
    The third cable feeds a the second router to the far room in the house to the third PC. the third PC is using the wifi from the second router.
    The main router has three cables plugged into it. If I unplug one of the two PC cables the thried PC works fine.
    I can't get three PC's to access the internet at the same time without a connection failure.
     
  19. Rod Bishop

    Rod Bishop Member

    Messages:
    253
    The lost connection does not happen instantly, but over several minutes to an hour, one of the two PC's in the main router will lose connection.

    It kinda like two people on a water line, as long as only two users are there all is OK, but soon after the third user turns the water on the pressure drops and someone will not have water.[​IMG]
     
  20. Renzore101

    Renzore101 Member

    Messages:
    334
    How do you have this second wireless router configured? Make sure you have DHCP turned off on this router. Can you provide us with screenshots of the web interface configuration on these routers? I think there could be a possibility that the routers could have a duplicate IP address.
     
    Last edited: Apr 5, 2017

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