Its not a common issue it the problem from ur building earthing plz chek voltages for this u get i.e, neutal face and earth
in earthing u have to get only below 3 volts in case u get more than that its sure ur problem that ur facing is with voltage variation
the common issues of this switching is
I administer a small network for a cab company, and have
lately been battling an internal connectivity problem for the last
several days. It seems that 2 of the 5 computers on the LAN
intermittently "drop" connection without losing their IP addresses. If I
disable the network connection on the "dropped" machine, and then
immediately re-enable it, it seems to work for anywhere from 5 minutes
to a couple of hours, then "drops" again. All LAN IP addresses are
configured manually. I've posted an image of the network map at http://www.geekcavecreations.com/images/network_map.gif to illustrate how the LAN is arranged.
The
local network has 2 computers that connect to the internet through the
DSL router, one for ICS, and the other has an external web server
(neither one has connectivity problems).
One computer on the LAN
has an internal web server that handles our dispatch program. All
computers on the network need to be able to access this box.
The
dispatch client has to access the dispatch server, but can't have
internet access. It's blocked from the internet through the simple
expedient of not having an external DNS server assignment.
Now,
for the meat of the problem. I've checked and re-checked the
configurations for both the dispatch server and the dispatch client, and
find no problems. Both have the most recent drivers for the network
cards, and both have new cables. I've swapped out a known good hub for
the LAN, and have made sure that there are no mis-configured hosts
files. As outlined previously, disabling and enabling the NIC on the
offending machine will restore connectivity for a while. I've checked
each machine for an overheating problem, just in case, and find no
trouble there. All machines are running XP Pro.
I can't shake the
feeling that I'm missing something basic and simple, but I'm at a loss
as to what that might be. Any suggestions?
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