1. Computer problem? Tech Support Guy is completely free -- paid for by advertisers and donations. Click here to join today! If you're new to Tech Support Guy, we highly recommend that you visit our Guide for New Members.

Network dropping off

Discussion in 'Networking' started by DreamGoddess, Apr 17, 2010.

Thread Status:
Not open for further replies.
Advertisement
  1. DreamGoddess

    DreamGoddess Thread Starter

    Joined:
    Apr 17, 2010
    Messages:
    9
    Okay, this is a very strange problem.

    First off, we have a Linksys modem and a Lynksys router.

    Anyway, with some frequency, the network drops off, and in a weird way. Messenger programs still work and other internet-based programs will still run, no problems at all. Internet browsers, however, all stop working. It's not a computer problem because it's effecting all the computers on the network (including the computers not running messengers or other internet-based programs). The only way to fix the problem is to reset the router completely.

    I've upgraded the firmware and I have the MTU size set to 1500 for the router to actually work AT ALL.

    So can anyone tell me how to fix this issue? I don't even understand how messengers and torrents can still work while internet browsing goes to "can't find the server" all the damn time. This is really irritating because I basically have to stop whatever I'm doing to fix this several times a day.
     
  2. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,418
  3. DreamGoddess

    DreamGoddess Thread Starter

    Joined:
    Apr 17, 2010
    Messages:
    9
    That's not it. It effects all my browsers, and I've tried several. Does the same thing on each one. My main is Firefox. It also does it randomly, not in a predictable way.
     
  4. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,418
    When you have the issue, please do this.


    Try these simple tests.

    Hold the Windows key and press R, then type CMD (COMMAND for W98/WME) to open a command prompt:

    In the command prompt window that opens, type type the following commands one at a time, followed by the Enter key:

    NOTE: For the items below in red surrounded with < >, see comments below for the actual information content, they are value substitutions from the previous IPCONFIG command output! Do NOT type <computer_IP_address> into the command, that won't work. Also, the < and > in the text is to identify the parameters, they are also NOT used in the actual commands.

    Do NOT include the <> either, they're just to identify the values for substitution.

    IPCONFIG /ALL

    PING <computer_IP_address>

    PING <default_gateway_address>

    PING <dns_servers>

    PING 74.125.45.100

    PING yahoo.com

    Right click in the command window and choose Select All, then hit Enter to copy the contents to the clipboard.
    Paste the results in a message here.

    <computer_IP_address> - The IP Address of your computer, obtained from the IPCONFIG command above. (For Vista/Win7, the IPv4 Address)

    <default_gateway_address> - The IP address of the Default Gateway, obtained from the IPCONFIG command above.

    <dns_servers> - The IP address of the first (or only) address for DNS Servers, obtained from the IPCONFIG command above.


    If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.
     
  5. DreamGoddess

    DreamGoddess Thread Starter

    Joined:
    Apr 17, 2010
    Messages:
    9
    Okay, I have the results, and they are baffling. I had to modify your instructions a little bit in order to get some clarity, or rather I added one instruction. Still, these results are puzzling. Before I get to the log file, let me tell you some independent findings.

    When I saw that yahoo.com pinged successfully during the outage, I actually tried to go to yahoo.com, and lo and behold, it worked. I also checked Google, and it worked as well. EVERY OTHER WEB SITE ON THE INTERNET FAILED. Only those two worked. You'll see what I mean in the log file below, in which, after pinging yahoo.com, I tried to ping twitter.com and it came up with nothing.

    In Firefox I get "can't find the server" and in Internet Explorer I get "can't display the web page". Yahoo and Google work, everything else fails. I don't see how this can possibly make any sense. Why would two web sites work while everything else on the internet fails? Makes no sense whatsoever. I checked out many sites during the outage to make sure it DEFINITELY was not the web sites' problems. Twitter, Facebook, MySpace, even this forum, all of them failed. Google and Yahoo worked. Anyway, here's the log.

    Oh, and in case it matters, when this happens, if I'm streaming video to my PS3, that stops working as well most of the time, but not all the time. Seems to be random if it drops off or not. Oh, and as stated previously, messenger programs continue to run uninterrupted. It's not my computer, either, because this happens to all the computers on the network the same.



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

    C:\Users\Owner>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : LINDSEY-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    Ethernet adapter Local Area Connection 3:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : NVIDIA nForce 10/100/1000 Mbps Ethernet #
    3
    Physical Address. . . . . . . . . : 00-22-15-A1-B9-B7
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::408d:a924:5e9:90d0%14(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.1.100(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Friday, April 16, 2010 9:29:33 PM
    Lease Expires . . . . . . . . . . : Tuesday, April 20, 2010 9:29:34 AM
    Default Gateway . . . . . . . . . : 192.168.1.1
    DHCP Server . . . . . . . . . . . : 192.168.1.1
    DHCPv6 IAID . . . . . . . . . . . : 335553045
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-10-1B-C8-14-00-18-F3-AF-E2-7B

    DNS Servers . . . . . . . . . . . : 24.197.160.17
    24.197.160.18
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter Local Area Connection* 7:

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

    Tunnel adapter Local Area Connection* 9:

    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. . . . . . . . . . . : 2001:0:4137:9e76:2063:10a:e74a:b8fd(Prefe
    rred)
    Link-local IPv6 Address . . . . . : fe80::2063:10a:e74a:b8fd%10(Preferred)
    Default Gateway . . . . . . . . . : ::
    NetBIOS over Tcpip. . . . . . . . : Disabled

    Tunnel adapter Local Area Connection* 12:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : isatap.{8D86147F-4BD7-4E3F-AA72-A8A7A568A
    6CA}
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    C:\Users\Owner>ping 192.168.1.100

    Pinging 192.168.1.100 with 32 bytes of data:
    Reply from 192.168.1.100: bytes=32 time<1ms TTL=128
    Reply from 192.168.1.100: bytes=32 time<1ms TTL=128
    Reply from 192.168.1.100: bytes=32 time<1ms TTL=128
    Reply from 192.168.1.100: bytes=32 time<1ms TTL=128

    Ping statistics for 192.168.1.100:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms

    C:\Users\Owner>ping 192.168.1.1

    Pinging 192.168.1.1 with 32 bytes of data:
    Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
    Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
    Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
    Reply from 192.168.1.1: bytes=32 time<1ms TTL=64

    Ping statistics for 192.168.1.1:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms

    C:\Users\Owner>ping 24.197.160.17

    Pinging 24.197.160.17 with 32 bytes of data:
    Reply from 24.197.160.17: bytes=32 time=10ms TTL=57
    Reply from 24.197.160.17: bytes=32 time=13ms TTL=57
    Reply from 24.197.160.17: bytes=32 time=10ms TTL=57
    Reply from 24.197.160.17: bytes=32 time=12ms TTL=57

    Ping statistics for 24.197.160.17:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 10ms, Maximum = 13ms, Average = 11ms

    C:\Users\Owner>ping 74.125.45.100

    Pinging 74.125.45.100 with 32 bytes of data:
    Reply from 74.125.45.100: bytes=32 time=15ms TTL=51
    Reply from 74.125.45.100: bytes=32 time=15ms TTL=51
    Reply from 74.125.45.100: bytes=32 time=13ms TTL=51
    Reply from 74.125.45.100: bytes=32 time=13ms TTL=51

    Ping statistics for 74.125.45.100:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 13ms, Maximum = 15ms, Average = 14ms

    C:\Users\Owner>ping yahoo.com

    Pinging yahoo.com [209.191.122.70] with 32 bytes of data:
    Reply from 209.191.122.70: bytes=32 time=92ms TTL=45
    Reply from 209.191.122.70: bytes=32 time=87ms TTL=45
    Reply from 209.191.122.70: bytes=32 time=92ms TTL=45
    Reply from 209.191.122.70: bytes=32 time=87ms TTL=45

    Ping statistics for 209.191.122.70:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 87ms, Maximum = 92ms, Average = 89ms

    C:\Users\Owner>ping twitter.com
    Ping request could not find host twitter.com. Please check the name and try agai
    n.

    C:\Users\Owner>
     
  6. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,418
    That sounds like your DNS server is having an issue.


    Let's try replacing your DNS server. Follow the instructions at OpenDNS for Windows and configure to use OpenDNS for your DNS server. See if that makes a difference.
     
  7. DreamGoddess

    DreamGoddess Thread Starter

    Joined:
    Apr 17, 2010
    Messages:
    9
    Well it seemed to work for a while, but then the router disconnected from OpenDNS. Messengers still work and so do other internet applications, but the browsers stopped working. It's like the router doesn't want to recognize DNS servers.

    EDIT: Yeah, the router keeps dropping off OpenDNS, too, just like it'd go offline without OpenDNS. The only difference being that it eventually after a few minutes comes back on. It disconnects so much, though, that it's really hard to do anything online that requires a browser. Messengers and other various applications still work, but I can't surf the web hardly at all. I don't know what could cause a problem like this. It seems the IP address keeps getting lost or something, that's what OpenDNS is showing. If that's the case, though, shouldn't I be losing ALL internet, including messengers and other internet applications?

    Does this mean the router is bad? Do I need to buy a new one?
     
  8. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,418
    Well, I'd connect directly to the modem and see if the same thing happens. If not, then I'd see if you could beat the router into submission.


    Some things you can try here, listed in the order you should try them.

    1. For wireless connections, remove all the stored wireless profiles and search for networks. You'll have to enter the encryption key again, which is sometimes the issue for connection problems.
    2. For wireless connections, change the channel on the router, I like channels 1, 6, and 11 in the US.
    3. For wireless connections, try moving either the wireless router/AP or the wireless computer. Even a couple of feet will sometimes make a big difference.
    4. Update the network drivers (wired and wireless) on your computer to the latest available.
    5. Update the firmware to the latest version available on the manufacturer's site.
    6. Reset the router to factory defaults and reconfigure.

    Many times these measures will resolve a lot of intermittent issues.
     
  9. DreamGoddess

    DreamGoddess Thread Starter

    Joined:
    Apr 17, 2010
    Messages:
    9
    Does it make a difference that when the network drops off, I get a "500 Internal Server Error" when trying to connect to the router?

    Thought I should mention that before doing anything else.
     
  10. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,418
    Hard to say, did you try the direct connection to the modem?
     
  11. DreamGoddess

    DreamGoddess Thread Starter

    Joined:
    Apr 17, 2010
    Messages:
    9
    Okay, tried the direct connect and had no problems over the course of 12 hours. Then I tried resetting the router and upgrading the firmware. I almost thought the problem was fixed since I had no problems for two days, but the problem persists after all, I just had to reset the stupid router again to fix the connection problems.

    So none of that worked.
     
  12. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,418
    Well, if you have to keep resetting the router, I'd be router shopping. :)
     
  13. Sponsor

As Seen On
As Seen On...

Welcome to Tech Support Guy!

Are you looking for the solution to your computer problem? Join our site today to ask your question. This site is completely free -- paid for by advertisers and donations.

If you're not already familiar with forums, watch our Welcome Guide to get started.

Join over 733,556 other people just like you!

Loading...
Thread Status:
Not open for further replies.

Short URL to this thread: https://techguy.org/917536

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice