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Internet connection periodically drops and reconnects

Discussion in 'Networking' started by Khazoids, Jun 16, 2015.

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  1. Khazoids

    Khazoids Thread Starter

    Jan 21, 2012
    Over the past few weeks, I've been getting these connection drops and I've had to reboot my modem in order to get the connection back. Most of the times, the DSL light continuously flashes and I get no connection. If I'm lucky, the DSL light solidifies and I get a dodgy connection for a couple hours and it drops again.

    I've been told it's an issue with my attenuation and impulse noise. I've had more than 4 technicians dispatched to my house saying that they've fixed it and stabilized the signals. The most recent fixed the issue where the connection drops for longer periods of times, but the connection is still really dodgy. The connection still drops but not as often and usually happens in mornings.

    I'm currently using a C100a modem from Centurylink and if it matters, it's bridged to a Netgear router. Here are my numbers:

    DSL Status

    Connection Status
    DSL Downstream: 20.127 Mbps
    DSL Upstream: 0.639 Mbps
    DSL Link Statistics

    Link Statistic Status
    Broadband Mode Setting: Auto Select
    Broadband Mode Detected: VDSL2 - 8A
    DSL Link Uptime: 0 Days, 0H:2M:17S
    Retrains: 1
    Retrains in Last 24 Hours: 1
    Loss of Power Link Failures: 0
    Loss of Signal Link Failure: 0
    Loss of Margin Link Failure: 0
    Link Train Errors: 0
    Unavailable Seconds: 23
    Estimated Loop Length: 1940
    Uncanceled Echo: N/A
    Transport Mode: PTM
    Path Parameter: 201
    Priority: 3
    Service Type: PTM-Tagged
    DSL Power

    Levels Downstream Upstream
    SNR: 22 dB 13 dB
    Attenuation: (DS1)22.8, (DS2)49.9 dB (US1)6.0, (US2)42.0 dB
    Power: 16.7 dBm 7.6 dBm
    DSL Transport

    Transport Downstream Upstream
    Packets: 6344 6263
    Error Packets: 0 0
    24 Hour Usage: 57.21 Mbits 6.38 Mbits
    Total Usage: 57.21 Mbits 6.38 Mbits
    30 Minute Discarded: 0 136
    DSL Channel

    Channel Near End Far End
    Channel Type: Interleaved Interleaved
    CRC Errors: 0 0
    30 Minute CRC: 0 0
    RS FEC: 0 144
    30 Minute FEC: 0 144
  2. etaf

    etaf Moderator

    Oct 2, 2003
    First Name:
    That usually means that the modem is connecting to the line
    I can not find a manual for that C100a
    But the user manual would tell you what to expect from the DSL Light
    I would normally expect that to be a solid all the time
    You usually also have an internet light , and that one flashes as data is transferring
  3. Khazoids

    Khazoids Thread Starter

    Jan 21, 2012
    Yeah, the issue before was that the DSL would stay flashing for long periods of time and I would have no connection (or the internet lights become red). Now, the drops become aren't as long but much more frequent.

    The DSL light would drop, flash for a while and then solidify again with a connection. It would repeat every once in a while and the connection would still be dodgy. Certainly isn't normal and has only started happening in the last week or so.
  4. etaf

    etaf Moderator

    Oct 2, 2003
    First Name:
    I dont know the US system well enough to advise on what to do next - in UK we would check the master socket, filters etc
    I'm sure they would have already covered the basics at the very minimum
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