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loss of network conectivity

By yohae
Aug 29, 2007
  1. I have a basic knowlege of networking and have a network
    of 4 PCs sharing one internet connection and I have done
    the network by myself using 12 port hub.This network not consistently work.
    that means if it work one day it will not work the other
    day,it work in the morning but not in the afternoon.I tried
    to contact local network technitians they cold not solve
    the problem.Please help me it drviving me creazy

    Description of all PCs:

    Compaq deskpro
    window XP professional Service Pack 2
    Pentium III processor
    128Mb of RAM
    Accton EN1207D-TX PCI Fast Ethernet Adapter
     
  2. raybay

    raybay TS Evangelist Posts: 7,241   +9

    You only described one of the PC's
    As you are probably aware, networking successfully, requires rest and relaxation, then slowly thinking everything through.
    Stress over the failure is always part of the problem.
    Is the network internet connection going through a cable modem or dsl modem? Do you have any older printers on this network?
    If printers are part of the network, double check IP addresses and setup.
    Then double check computer IP addresses.
    Turn on printers first, then oldest computer, then central computer, and the rest.
    If still inconsistently connected, disconnect printers and oldest computer.
    If still notworking,
    Borrow any other router, and connect only computers. Run and test.
    Borrow cable/dsl modem.
    Do not assume the cable/dsl modem is working properly.
    Did this setup once work, or has it always been trouble.

    My guess is focused on the computer, if you posted equipment correctly.
    Having only 128 MB memory is plenty reason for it not to work. Having WXPP on a Pentium III on a Compaq Deskpro with severely limited memory would give anybody problems.
    You need 500 MB or memory on that computer with that operating system, pure and simple.
     
  3. jobeard

    jobeard TS Ambassador Posts: 9,317   +618

    we need:
    1. type of your ISP connectiong: (Adsl, Cable, Dial-up)
    2. the make/model of your modem and router
    3. a description of how the network is wired
    eg:
    Code:
    modem---router---wired.systems
    First recomendation for unreliable networks is to install the latest firmware
    for your router (and modem if any).

    You did not mention wireless access, so we assume all systems are wired.
     
  4. yohae

    yohae TS Rookie Topic Starter

    Thanks for your replies Jobeard


    1. My ISP connection is Dial-up
    2. The make of my modem is D-Link 56Kb modem
    3 All of my 4 PCs are connected to a 3-COM 12 port switch
    (it is a simple home network)
     
  5. yohae

    yohae TS Rookie Topic Starter

    Thanks for your replly Reybay

    ther is no any printer attached to this network

    once I replace the ICS computer with Dell Optiplex 280 ,512Mb of RAM and upgrade
    the other 3 pcs to 256Mb of RAM ,the 3PCs are all the same kind that was discribed
    on my privios post except the RAM upgrad.but the probleme persist(remain)
     
  6. yohae

    yohae TS Rookie Topic Starter

    Thanks for your replies Jobeard


    1. My ISP connection is Dial-up
    2. The make of my modem is D-Link 56Kb modem
    3 All of my 4 PCs are connected to a 3-COM 12 port switch
    (it is a simple home network)
     
  7. raybay

    raybay TS Evangelist Posts: 7,241   +9

    I suspect you will not be able to improve on this connection with the components and setup you have. Telephone companies throughout the country no longer care about dial-up service.
    I would check your connection speed with one of the online connection speed testers such as CNet Bandwidth Speed Test or InternetFrog.com or one of the others you can find with a Gurgle search...
    It is likely that your connection speed is changing depending upon the telephone use in your neighborhood, and when it drops below 36 kbps, or certainly when below 21 kbps, you system shuts down. The demands of your system drop the connection speed by about 4 kbps for each connection on the line. Those connect points, combined with the fact that telephone companies no longer care, and the state regulatory agencies do not expect more than 33.6 kbps at maximum, are going to defeat you.
    If you want to remain connected, use one direct line to one computer.
    If your connection speed drops below 31.6, and you are not rural, then call the phone company...
    Your actual connection speed may be lower than 18 kbps with that rig you have setup. Test it to see. Test it on each line to see how each line compares... then test it again with multiple connections.
     
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