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Tracking down cause for intermittent connection loss

Discussion in 'Networking' started by wrathoranos, Jan 11, 2009.

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  1. wrathoranos

    wrathoranos Thread Starter

    Jan 11, 2009
    I have a broadband connection that has been dropping frequently, most often during peak hours. This has only really started recently that I can tell, since I notice it clearly while playing online game this past week. Prior to this, I wasn't gaming for a few weeks, but before that, there was never a stability issue with the connection.

    System Specs:

    Operating System: Windows Vista¬ô Home Premium (6.0, Build 6001) Service Pack 1 (6001.vistasp1_gdr.080917-1612)
    Language: English (Regional Setting: English)
    System Manufacturer: System manufacturer
    System Model: System Product Name
    BIOS: BIOS Date: 05/12/08 Ver: 08.00.14
    Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ (2 CPUs), ~2.6GHz
    Memory: 3326MB RAM
    Page File: 1027MB used, 5860MB available
    Windows Dir: C:\Windows
    DirectX Version: DirectX 10

    2Wire Gateway (model: 2701HG-G) connected directly.

    I did a series of tracerts to my ISP and noticed frequent timeouts on hops after the ISPs own servers. Sometimes the tracert would complete after just a single unresolved hop, and other times, it would continue to timeout at the 30 hop max. This was happening even when my connection was working.

    I'm not sure what that may mean, but I don't trust my ISPs support to understand it. They've been less than helpful so far.

    I notice no latency or slow service, just a complete interruption for periods between 5 seconds and a few minutes. I only detect a problem when my game becomes unresponsive. At this point, I'm also unable to browse and *sometimes* there's a warning light on the gateway showing no connection. But even this is only occasionally. Most often it stays green.

    I haven't made any changes to my network setup in months and everything is connected securely.

    Here's a copy of the last 2 tracerts I ran. The first eventually resolved while the second never did and I broke it at hop 14. Otherwise it will have continued right to 30.

    1 2 ms 1 ms 1 ms mymodem []
    2 10 ms 9 ms 11 ms
    3 11 ms 9 ms 8 ms dis17-ottawa23_Vlan105.net.bell.ca [
    4 9 ms 9 ms 9 ms core2-ottawa23_G14-1-4.net.bell.ca [
    5 8 ms 9 ms 8 ms core2-ottawatc_POS5-0-0.net.bell.ca [64.230.132.
    6 15 ms 15 ms 15 ms core3-toronto63_POS1-2.net.bell.ca [
    7 14 ms 14 ms 15 ms core2-torontodc_POS3-1.net.bell.ca [
    8 15 ms 15 ms 14 ms dis4-torontodc_Vlan82.net.bell.ca [
    9 17 ms 17 ms 17 ms
    10 16 ms 16 ms 17 ms
    11 * * * Request timed out.
    12 19 ms 17 ms 16 ms


    1 1 ms 1 ms 1 ms mymodem []
    2 17 ms 11 ms 9 ms
    3 9 ms 9 ms 9 ms dis17-ottawa23_Vlan105.net.bell.ca [
    4 8 ms 9 ms 9 ms core1-ottawa23_GE11-2.net.bell.ca [
    5 10 ms 9 ms 9 ms core2-ottawa23_POS0-1.net.bell.ca [
    6 11 ms 11 ms 11 ms Ncore3-montreal02_POS0-4-0-0.net.bell.ca [64.230
    7 11 ms 11 ms 10 ms core3-montreal02_POS10-1-0_core.net.bell.ca [64.
    8 10 ms 11 ms 11 ms dis11-montreal02_POS7-0.net.bell.ca [206.108.99.
    9 13 ms 12 ms 13 ms
    10 * * * Request timed out.
    11 * * * Request timed out.
    12 * * * Request timed out.
    13 * * * Request timed out.
    14 ^C

    Any ideas are appreciated.
  2. JohnWill

    JohnWill Retired Moderator

    Oct 19, 2002
    Do you notice any particular periods of the day where the issue occurs more often? This sure sounds like ISP issues or perhaps interior wiring and/or filter installation issues.

    Register at DSLReports and run their Line Quality Tests. It's best to run this test with a direct wired connection to eliminate any wireless issues from the results. It's useful many times to run this test several times, and we'd like to see each of the results. Post the results link from the top of the test display page for each test run here.

    The link to post is near the top of the page and looks like:

    If you wish to post this result to a forum, please copy/paste this URL
    http://www.dslreports.com/linequality/nil/2357195 <- sample only, yours will obviously be different!
    and your IP will be disguised.

    Copy/paste that link here.

    Note: You will have to enable PING (ICMP) request response either in your router (if you have one), or in your computer's firewall for direct modem connections. This is very important to get the most important part of the test to run.
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