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network not working porperly


We have small network having 5 computers(XP professional for sever and win 2000 professional for clients), we have developed a workgroup to share internet and files.From a week its happening that computers are not visible to other users on workgroup.
One worst thing is that network card donot work properly, once they work fine but on the other time they will say "network cable unpluged". But the cable was in, and if u restart it 4 or 5 times then there is a chance that it will be okay. But it did not show any computer in workgroup except itself.
One more thing that is it a good habit to allocate IP addresses dynamically, or give them manually to all comoputers attached.

thanks
Jamil
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chjamil
Asked:
chjamil
1 Solution
 
victorbxCommented:
Hi Jamil

well , too many different questions in one post , try to split them next time , you will get a better chance to get answered    :-)

for the first problem ... this will help :
http://www.experts-exchange.com/Networking/Q_20667667.html


for the Network problem try the following...

1) check the network cables , they may be damadged
2) check your hub/switch ,try to power off and on again (or replace it )
3)check your Nic's drivers , are they correct /updated ?
4) try to replace the NIC

regarding the ip allocation ,
it depends on how many computers you have , if you have few computers
so it will be easy to know which computer get's what ip, not too much work to do

but if you have many computers , it will be very difucult to setup the NIC ip all the day on many computers
a dhcp will do the work for you.


good luck  !!!

victor
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bjessupCommented:
A suggestion you might try is the LSP-Fix tool http://www.cexx.org/lspfix.htm which can resolve some wierd networking issues (related to adware and other things), the directions to use it (and information what it does) are on the website.  When it claims that the network cable is unplugged, are the link/activity lights on the back of the card on?  Are the link/activity lights on your hub/switch on for that port?  The problem that you are reporting sounds like a Computer Browser Service problem.  For more information on this service, look here:  http://www.microsoft.com/windows2000/techinfo/howitworks/management/w2kservices.asp#compbrow

In response to your second question, it really depends on what you are trying to accomplish, whether or not you use static or dynamic IPs.  In your situation, with such a small network, static IPs would be fine.  Generally the reason people use Dynamic IPs is because it reduces administrative overhead.  With Dynamic IPs you configure one DHCP server, and users can plug millions of computers in and out of the network, without having to know a thing about the addressing scheme.  This is also benificial if you have settings that change.  For example, with Statically assigned IPs, if your Gateway or your DNS server changes addresses (for whatever reason) you now have to go to every node in your network and change those addresses.  With Dynamic IPs, the most you might have to do is reboot a few machines.  Much simpler.  DHCP does, however, have drawbacks.  First, if the DHCP server goes down, none of the computers on the network will get an IP.  If your gateway is also your DHCP server, and all you use is the internet, this tends not to matter, because if you gateway goes down, there's nothing to address anyway.  Additionally, there is the hassle of setting up a DHCP server itself, including the hassle of purchasing one (if that is required for your application).  With static IPs of course, you need to keep track of each IP as to not duplicate any of them, but if you only have 5 computers, this is not too difficult.  So unless you have users that use laptops, that plug and unplug them frequently (use them at home, etc.) dynamic IPs may prove to be more hassle than it's worth.  Although, in my opinion, setting up a DHCP server is fun, so I have a DHCP server for my three PCs at home, but on the scale that you describe, it really all is just a matter of personal preference.
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