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Thread: Network connection fails to go past router

  1. #1

    Default Network connection fails to go past router

    So up until I updated from Opensuse 11.3 to 11.4, I hadn't any issues with my network connection. At least none worth mentioning. Once I installed 11.4, I've had weird issues with varying lengths of connection. Sometimes I can't connect anywhere, sometimes I can only get to the router, sometimes I'm 100%. I'd fiddle with YAST until everything worked. I honestly have no clue whether or not anything I did had any effect.

    Enough of the iffy history, here's what's happening now. For the past few weeks up until last night, I have been at 100% connectivity. I never turned off my computer until last night (it just shut itself off, like the cord was unplugged. I dunno what happened, maybe it was my foot, maybe the PSU. I think it has happened before.). When I turned it back on, I was only able to connect as far as my router (192.168.1.1, a D-Link Gaming router that has always been very good to me). I could not make it to my modem (192.168.0.1, a Quest DSL modem. Once I can get here, then usually I'm good to go 100%).

    I tried again this afternoon, and no change. I then get the crazy idea to unplug the ethernet cable from it's PCI-card home and return it to the onboard port (which I long ago declared defunct). Immediately after plugging it into that port, I ran "ping 192.168.0.1" and I started getting returns. I open up Firefox and try to load an external page, and nothing happens. I go back to the console that I was pinging from, and it had stopped. I start pinging my router, and no luck.

    What I conclude from my little experiment is that the router is not at fault.
    1. It did not change at all between being at 100% and being at 0% after reboot.
    2. I was able to get returns from the modem, past the router, for a brief period of time while using the defunct ethernet port.

    Since I never had these problems before updating to 11.4, I'm inclined to believe that it was the update that started these problems.

  2. #2
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    Smile Re: Network connection fails to go past router

    I have had some DNS issues which seemed to affect openSUSE a lot for some reason earlier in the year. To fix the issue, I went into my D-Link Gamer Lounge Router and added the following DNS servers.

    Code:
    Google
    
    8.8.8.8
    8.8.4.4
    It might be worth a try in your case as well.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  3. #3

    Default Re: Network connection fails to go past router

    I'm afraid I'll need a little lesson in DNS servers. What exactly is the route that data travels when I set my router to use one of these DNS servers? How is that different from now, and what will it do to solve my problem? Can I implement this method so it affects only the one Opensuse computer on my network (all other computers are working fine, and I'm quite satisfied with their speed relative to the ISP max)?

    More importantly, how do I implement this change? The first page that comes to mind is this, and to be frank, I hardly understand any of these fields.


    I'm sorry for the ton of questions. This is something I'm rather interested in, and I would like to learn as much as I can from this experience, preferably more than just going through the paces. I know it takes time to write out explanations, and I understand if you don't have much time. I really appreciate your help.

  4. #4
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    Default Re: Network connection fails to go past router

    On Mon, 16 May 2011 22:36:02 +0000, Waldo II wrote:

    > Enough of the iffy history, here's what's happening now. For the past
    > few weeks up until last night, I have been at 100% connectivity. I never
    > turned off my computer until last night (it just shut itself off, like
    > the cord was unplugged. I dunno what happened, maybe it was my foot,
    > maybe the PSU. I think it has happened before.). When I turned it back
    > on, I was only able to connect as far as my router (192.168.1.1, a
    > D-Link Gaming router that has always been very good to me). I could not
    > make it to my modem (192.168.0.1, a Quest DSL modem. Once I can get
    > here, then usually I'm good to go 100%).


    Usually a consumer-class router connecting via PPPoE or something similar
    won't let you reach the modem at all.

    From the workstation, what's the output of the 'route' command? It
    sounds like you're just not getting a default route.

    Jim



    --
    Jim Henderson
    openSUSE Forums Administrator
    Forum Use Terms & Conditions at http://tinyurl.com/openSUSE-T-C

  5. #5

    Default Re: Network connection fails to go past router

    I omitted the Metric, Ref, and Use columns because they were all the same- all zeros
    Code:
    Kernel IP Routing Table
    Destination ----- Gateway ----- Genmask ----- Flags ----- Iface
    192.168.1.0       *         255.255.255.0        U         eth2
    192.168.1.0       *         255.255.255.0        U         eth0
    link-local        *         255.255.0.0          U         eth2
    loopback          *         255.0.0.0            U         lo
    default      192.168.1.1    0.0.0.0              UG        eth0

  6. #6
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    Default Re: Network connection fails to go past router

    On Mon, 16 May 2011 23:36:01 +0000, Waldo II wrote:

    > I omitted the Metric, Ref, and Use columns because they were all the
    > same- all zeros
    >
    > Code:
    > --------------------
    >
    > Kernel IP Routing Table
    > Destination ----- Gateway ----- Genmask ----- Flags ----- Iface
    > 192.168.1.0 * 255.255.255.0 U eth2
    > 192.168.1.0 * 255.255.255.0 U eth0
    > link-local * 255.255.0.0 U eth2
    > loopback * 255.0.0.0 U lo default
    > 192.168.1.1 0.0.0.0 UG eth0
    >
    > --------------------


    What happens if you do a traceroute to, say, 130.57.4.24?

    Jim



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    Jim Henderson
    openSUSE Forums Administrator
    Forum Use Terms & Conditions at http://tinyurl.com/openSUSE-T-C

  7. #7
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    Smile Re: Network connection fails to go past router

    On the router, you need to select Basic then Manual Configuration and then DNS servers are added under the heading of DNS and Advanced Settings. There is a check block for use these Servers and then you can input a Primary and a Secondary DNS server. These settings will not upset anything else in your setup and can be used no matter what issue you might be having.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  8. #8

    Default Re: Network connection fails to go past router

    Traceroute Google (It should be noted that 192.168.1.174 is the local address of the workstation in question)
    Code:
    1 * * * *
    2 * * * *
    3 * * * *
    4 * * * *
    5 * * * *
    6 192.168.1.174 (1921.68.1.174)(H!) 298.862ms (H!) 2987.791ms (H!) 2986.648ms

    jdmcdaniel, I entered the DNS servers you applied to the right place. They had no effect on my Opensuse computer's ability to connect past the modem.


    Edit: For contrast, here is tracert www.google.com from a different computer on the network, a Windows XP machine.
    Code:
    Tracing route to www.l.google.com [74.125.225.80]
    over a maximum of 30 hops:
    
      1    <1 ms    <1 ms    <1 ms  192.168.1.1
      2     *        *        *     Request timed out.
      3    41 ms    41 ms    66 ms  c7200-3.bdr.mpls.iphouse.net [216.250.189.52]
      4   123 ms    92 ms    88 ms  ge0-2-0.m20-2.mpls.iphouse.net [216.250.189.189]
    
      5    73 ms    97 ms    41 ms  207-67-87-137.static.twtelecom.net [207.67.87.13
    7]
      6    53 ms    51 ms    52 ms  chi2-pr1-ge-2-1-0-0.us.twtelecom.net [66.192.243
    .138]
      7    99 ms   153 ms   211 ms  209.85.254.128
      8    51 ms    53 ms    53 ms  209.85.250.30
      9    72 ms    94 ms   133 ms  74.125.225.80
    
    Trace complete.

  9. #9
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    Smile Re: Network connection fails to go past router

    So in openSUSE 11.4 are you using the Traditional Method with ifup or are you using the NetworkManager? I am thinking you need to blow away your entire networking setup and start over again. However, before we try that, why not run this terminal command and see what affect if any it might have:

    Code:
    sudo /sbin/netconfig update -f
    It did help one individual with a routing problem.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  10. #10
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    Default Re: Network connection fails to go past router

    On Tue, 17 May 2011 02:36:02 +0000, Waldo II wrote:

    > Traceroute 'Google' (http://www.google.com) (It should be noted that
    > 192.168.1.174 is the local address of the workstation in question)
    >
    > Code:
    > --------------------
    >
    > 1 * * * *
    > 2 * * * *
    > 3 * * * *
    > 4 * * * *
    > 5 * * * *
    > 6 192.168.1.174 (1921.68.1.174)(H!) 298.862ms (H!) 2987.791ms (H!)
    > 2986.648ms
    >
    > --------------------


    Definitely a routing issue, and from what I can see on your route
    configuration, doesn't look like it's openSUSE that's having the problem.

    Does the machine have two NICs by chance? Maybe a wired and a wireless
    NIC?

    Jim



    --
    Jim Henderson
    openSUSE Forums Administrator
    Forum Use Terms & Conditions at http://tinyurl.com/openSUSE-T-C

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