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Hello All, I apreciate it if you can help solve my problem. I was doing my normal stuffs on the net today. At some point I found that the connection ...
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  1. #1
    Just Joined!
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    Dec 2013
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    2

    scientific linux 6: internet connection lost and never come back


    Hello All,
    I apreciate it if you can help solve my problem.
    I was doing my normal stuffs on the net today. At some point I found that the connection is gone and never come back even after several restarting. Here are some details
    Thanks again
    $ifconfig -a
    eth0 Link encap:Ethernet HWaddr 00:25:64:6F:48:14
    UP BROADCAST MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
    Interrupt:18

    lo Link encap:Local Loopback
    inet addr:127.0.0.1 Mask:255.0.0.0
    inet6 addr: ::1/128 Scope:Host
    UP LOOPBACK RUNNING MTU:16436 Metric:1
    RX packets:8 errors:0 dropped:0 overruns:0 frame:0
    TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:480 (480.0 b) TX bytes:480 (480.0 b)

    wlan0 Link encap:Ethernet HWaddr 70:1A:04:6D:A3:E6
    BROADCAST MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

    $ service network status
    Configured devices:
    lo Auto_AIRBEAR_WPA2 eth0
    Currently active devices:
    lo eth0

  2. #2
    Linux Guru Rubberman's Avatar
    Join Date
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    I can be found either 40 miles west of Chicago, in Chicago, or in a galaxy far, far away.
    Posts
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    Neither of these connections, eth0 (wired ethernet) nor wlan0 (wifi) have an ip address associated with them. I assume you are using the wireless lan connection? Are you sure your router/dhcp server(s) work? The wireless connection should get a dhcp address, and the wired connection can be either a dhcp or static ip address. Since eth0 has no ip address, then I have to assume it is also a dhcp device (a static address would show up by default).

    So, check your router and/or dhcp server to be sure they are working - reset them if necessary. I don't think the problem is with the computer, but most likely with the network.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  3. #3
    Just Joined!
    Join Date
    Dec 2013
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    Thanks Rubberman for the response. I turned off my router
    for a few minuets but didn't get the connection back.
    Actually my other computer and cell phone have good connections. This is only this computer that has problem.
    Thanks,

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